UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

(Mark One)

For the quarterly period ended June 30, 2019

OR

Commission File Number 001-33038

ZIOPHARM Oncology, Inc.

(Exact name of registrant as specified in its charter)

One First Avenue, Parris Building 34, Navy Yard Plaza

Boston, Massachusetts 02129

(617) 259-1970

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes:  ☒    No:  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes:  ☒    No:  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of ‘‘large accelerated filer,’’ ‘‘accelerated filer,’’ ‘‘smaller reporting company,’’ and ‘‘emerging growth company’’ in Rule 12b–2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).      Yes:  ☐    No:  ☒

The number of shares of the registrant’s common stock, $0.001 par value, outstanding as of July 24, 2019, was 162,552,963 shares.

ZIOPHARM Oncology, Inc.

NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains forward-looking statements that are based on our current beliefs and expectations. These forward-looking statements may be accompanied by such words as “anticipate,” “believe,” “estimate,” “expect,” “forecast,” “intend,” “may,” “plan,” “project,” “target,” “will” and other words and terms of similar meaning. Reference is made in particular to forward-looking statements regarding:

These forward-looking statements involve risks and uncertainties, including those that are described in the “Risk Factors” section of this report and elsewhere within this report that could cause actual results to differ materially from those reflected in such statements. You should not place undue reliance on these statements. Forward-looking statements speak only as of the date of this report. We do not undertake any obligation to publicly update any forward-looking statements.

NOTE REGARDING COMPANY REFERENCES

Throughout this Quarterly Report on Form 10-Q, “Ziopharm,” the “Company,” “we,” “us” and “our” refer to ZIOPHARM Oncology, Inc. and its subsidiaries.

NOTE REGARDING TRADEMARKS

All trademarks, trade names and service marks appearing in this Quarterly Report on Form 10-Q are the property of their respective owners.

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ZIOPHARM Oncology, Inc.

Table of Contents

3

Part I - Financial Information

Item 1. Financial Statements

ZIOPHARM Oncology, Inc.

BALANCE SHEETS

(unaudited)

(in thousands, except share and per share data)

The accompanying notes are an integral part of the unaudited interim financial statements.

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ZIOPHARM Oncology, Inc.

STATEMENTS OF OPERATIONS

(unaudited)

(in thousands, except share and per share data)

The accompanying notes are an integral part of the unaudited interim financial statements.

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ZIOPHARM Oncology, Inc.

STATEMENTS OF CHANGES IN PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT)

For the Three and Six Months Ended June 30, 2018

(unaudited)

(in thousands, except share and per share data)

For the Three Months Ended June 30, 2018

The accompanying notes are an integral part of the unaudited interim financial statements.

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ZIOPHARM Oncology, Inc.

STATEMENTS OF CHANGES IN PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT)

For the Three and Six Months Ended June 30, 2019

(unaudited)

(in thousands, except share and per share data)

For the Three Months Ended June 30, 2019

The accompanying notes are an integral part of the unaudited interim financial statements.

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ZIOPHARM Oncology, Inc.

STATEMENTS OF CASH FLOWS

(unaudited)

(in thousands)

The accompanying notes are an integral part of the unaudited interim financial statements.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS

(unaudited)

1. Business

Overview

ZIOPHARM Oncology, Inc., which is referred to herein as “ZIOPHARM,” or the “Company,” is a biopharmaceutical company seeking to develop, acquire, and commercialize, on its own or with partners, a diverse portfolio of immuno-oncology therapies.

The Company’s operations to date have consisted primarily of conducting research and development and raising capital to fund those efforts. The Company’s fiscal year ends on December 31.

The Company has operated at a loss since its inception in 2003 and has no recurring revenues from operations. The Company anticipates that losses will continue for the foreseeable future. As of June 30, 2019, the Company had approximately $43.6 million of cash and cash equivalents and the Company’s accumulated deficit was approximately $594.4 million. Given its current development plans, along with the $45.0 million in gross proceeds from the July 2019 private placement, the Company anticipates cash resources will be sufficient to fund operations into the first half of 2021. The Company’s ability to continue operations after its current cash resources are exhausted depends on its ability to obtain additional financing or to achieve profitable operations, as to which no assurances can be given. Cash requirements may vary materially from those now planned because of changes in the Company’s focus and direction of its research and development programs, competitive and technical advances, patent developments, regulatory changes or other developments. If adequate additional funds are not available when required, or if the Company is unsuccessful in entering into partnership agreements for further development of its product candidates, management may need to curtail its development efforts and planned operations to conserve cash.

Basis of Presentation

The accompanying unaudited interim financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission, or the SEC. Certain information and note disclosures required by generally accepted accounting principles in the United States have been condensed or omitted pursuant to such rules and regulations.

It is management’s opinion that the accompanying unaudited interim financial statements reflect all adjustments (which are normal and recurring) that are necessary for a fair statement of the results for the interim periods. The unaudited interim financial statements should be read in conjunction with the audited financial statements and the notes thereto for the year ended December 31, 2018, included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018 filed with the SEC on March 5, 2019, or the Form 10-K.

The year-end balance sheet data was derived from the audited financial statements but does not include all disclosures required by generally accepted accounting principles in the United States.

The results disclosed in the statements of operations for the three and six months ended June 30, 2019 are not necessarily indicative of the results to be expected for the full fiscal year.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

1. Business – (continued)

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Although the Company regularly assesses these estimates, actual results could differ from those estimates. Changes in estimates are recorded in the period in which they become known.

The Company’s most significant estimates and judgments used in the preparation of its financial statements are:

Subsequent Events

The Company evaluated all events and transactions that occurred after the balance sheet date through the date of this filing. Except as disclosed below, the Company did not have any material subsequent events that impacted its financial statements or disclosures.

On December 18, 2018, the Company and TriArm Therapeutics, Ltd., or TriArm, announced their plans to establish a joint venture, Eden BioCell, Ltd., to lead clinical development and commercialization of Sleeping Beauty-generated CAR-T therapies in the People’s Republic of China (including Macau and Hong Kong), Taiwan and Korea. TriArm is a cell therapy company with operations in Germany, China and the United States.

For the territory of China, Taiwan and Korea, the Company has licensed the rights to Eden BioCell, Ltd., or Eden BioCell, for third-generation Sleeping Beauty-generated CAR-T therapies targeting the CD19 antigen. Eden BioCell is jointly-owned by the Company and TriArm. TriArm has committed up to $35.0 million to this joint venture. Under the terms of the agreement, Eden BioCell has rights in the region to CAR-T cells very rapidly manufactured in two days or less using the Sleeping Beauty platform to express a CD19-specific CAR and membrane-bound interleukin 15, or mbIL15, along with a kill switch. The Company and TriArm share decision-making authority and TriArm will manage all clinical development to execute trials in China for Eden BioCell. On January 3, 2019 Eden BioCell was incorporated in Hong Kong and the transaction closed on July 5, 2019.

On July 29, 2019, the Company announced that it entered into an agreement with existing investors for the exercise of previously issued warrants to purchase common stock in a private placement. Pursuant to the terms of the agreement, investors have agreed to exercise warrants for an aggregate of 15,015,152 shares of common stock, at an exercise price of $3.01 per share. The warrants being exercised were originally issued by the Company in a private placement that closed in November 2018. The Company will issue new warrants to purchase up to 15,015,152 additional shares of common stock. The warrants will become exercisable six months following the date of issuance, will expire on the fifth anniversary of the initial exercise date, and have an exercise price of $7.00. Gross proceeds from the offering, before deducting placement agent and other offering expenses is approximately $45.0 million.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

2. Summary of Significant Accounting Policies

The Company’s significant accounting policies were identified in the Company’s Form 10-K. There have been no material changes in those policies since the filing of its Form 10-K except as noted below with respect to the Company’s revenue recognition.

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), to increase transparency and comparability among organizations by requiring the recognition of a right-of-use assets and lease liabilities for most lease arrangements on the balance sheet. Under the standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The new standard is effective for fiscal years beginning after December 15, 2018, and the Company adopted the standard on January 1, 2019.

The standard permits two transition methods, (1) to apply the new lease requirements at the beginning of the earliest period presented, or (2) to apply the new lease requirements at the effective date. The Company adopted Topic 842 as of January 1, 2019 using the effective date method, in which it did not restate prior periods. Upon adoption, the Company elected the package of practical expedients permitted under the transition guidance within Topic 842 which, among other things, allowed it to carry forward the historical lease classification.

The adoption of Topic 842 on January 1, 2019 resulted in recognition of approximately $1.6 million of right-of-use assets and $1.6 million of lease liabilities on the Company’s balance sheets. The adoption did not have a material impact on the Company’s statements of operations or accumulated deficit. The Company has implemented changes to related processes, controls and disclosures in connection with the adoption of Topic 842.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

2. Summary of Significant Accounting Policies (continued)

New Accounting Pronouncements

In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement, or ASU 2018-03. The guidance in this ASU modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement. Under the new guidance, transfers between asset classes and the valuation related to level 3 assets is modified. The new standard is effective for annual reporting periods beginning after December 15, 2019, including interim reporting periods within each annual reporting period. The Company is currently evaluating the impact of the adoption of this ASU on the financial statements.

In June 2018, the FASB issued ASU No. 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting, or ASU 2018-07. The guidance in this ASU expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. The new standard was effective for annual reporting periods beginning after December 15, 2018, including interim reporting periods within each annual reporting period. The Company adopted this ASU on January 1, 2019. The adoption did not have a material impact on the Company’s financial statements.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

3. Fair Value Measurements

The Company accounts for its financial assets and liabilities using fair value measurements. The authoritative accounting guidance defines fair value, establishes a framework for measuring fair value under generally accepted accounting principles and enhances disclosures about fair value measurements. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The fair value hierarchy is based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value as follows:

Assets and liabilities measured at fair value on a recurring basis as of June 30, 2019 and December 31, 2018 were as follows:

The cash equivalents represent deposits in a short-term United States treasury money market mutual fund quoted in an active market and classified as a Level 1 asset.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

4. Net Loss per Share

Basic net loss per share is computed by dividing net loss by the weighted average number of shares of common stock outstanding for the period. The Company’s potentially dilutive shares, which include outstanding common stock options, unvested restricted stock and preferred stock, have not been included in the computation of diluted net loss per share for any of the periods presented as the result would be anti-dilutive. Such potentially dilutive shares of common stock at June 30, 2019 and 2018 consisted of the following:

On October 5, 2018, the Company and Precigen, Inc., or Precigen, a wholly owned subsidiary of Intrexon Corporation, or Intrexon, entered into an exclusive license agreement, or the License Agreement, to replace all existing agreements between the companies that provides the Company with certain exclusive and non-exclusive rights to technology controlled by Precigen. In consideration of the Company entering into the License Agreement, Intrexon agreed to forfeit and return to the Company all shares of the Company’s Series 1 Preferred Stock held by or payable to Intrexon as of the date of the License Agreement (Note 8).

5. Revenue Recognition

The Company adopted Accounting Standards Codification, or ASC Topic 606, Revenue from Contracts with Customers, or ASC 606, using the modified retrospective approach on January 1, 2018. The Company completed its assessment and the implementation resulted in a cumulative effect adjustment to accumulated deficit as of January 1, 2018 of approximately $8.1 million and a corresponding increase to the contract liability (formerly deferred revenue). The adjustment to the Company’s financial statements due to the adoption of ASC 606 is related to the Company’s License and Collaboration Agreement with Ares Trading S.A., a subsidiary of Merck KGaA, or the Ares Trading Agreement (Note 6), which was the Company’s sole open revenue contract outstanding at January 1, 2018. The Company has not recognized any revenue in the three and six months ended June 30, 2019.

The Company primarily generates revenue through collaboration arrangements with strategic partners for the development and commercialization of product candidates. Commencing January 1, 2018, the Company recognized revenue in accordance with ASC 606 which replaced ASC 605, Multiple Element Arrangements, as used in historical years. The core principle of ASC 606 is that an entity should recognize revenue to depict the transfer of promised goods and/or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and/or services. To determine the appropriate amount of revenue to be recognized for arrangements that the Company determines are within the scope of ASC 606, the Company performs the following steps: (i) identify the contract(s) with the customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) each performance obligation is satisfied.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

5. Revenue Recognition (continued)

The Company recognizes collaboration revenue under certain of the Company’s license or collaboration agreements that are within the scope of ASC 606. The Company’s contracts with customers typically include promises related to licenses to intellectual property, research and development services and options to purchase additional goods and/or services. If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, the Company recognizes revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the licensee and the licensee is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgement to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees. Contracts that include an option to acquire additional goods and/or services are evaluated to determine if such option provides a material right to the customer that it would not have received without entering into the contract. If so, the option is accounted for as a separate performance obligation. If not, the option is considered a marketing offer which would be accounted for as a separate contract upon the customer’s election.

The terms of the Company’s arrangements with customers typically include the payment of one or more of the following: (i) non-refundable, up-front payment, (ii) development, regulatory and commercial milestone payments, (iii) future options and (iv) royalties on net sales of licensed products. Accordingly, the transaction price is generally comprised of a fixed fee due at contract inception and variable consideration in the form of milestone payments due upon the achievement of specified events and tiered royalties earned when customers recognize net sales of licensed products. The Company measures the transaction price based on the amount of consideration to which it expects to be entitled in exchange for transferring the promised goods and/or services to the customer. The Company utilizes the most likely amount method to estimate the amount of variable consideration, to predict the amount of consideration to which it will be entitled for its one open contract. Amounts of variable consideration are included in the transaction price to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. At the inception of each arrangement that includes development and regulatory milestone payments, the Company evaluates whether the associated event is considered probable of achievement and estimates the amount to be included in the transaction price using the most likely amount method. Milestone payments that are not within the control of the Company or the licensee, such as those dependent upon receipt of regulatory approval, are not considered to be probable of achievement until the triggering event occurs. At the end of each reporting period, the Company reevaluates the probability of achievement of each milestone and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment. For arrangements that include sales-based royalties, including milestone payments based upon the achievement of a certain level of product sales, the Company recognizes revenue upon the later of: (i) when the related sales occur or (ii) when the performance obligation to which some or all of the payment has been allocated has been satisfied (or partially satisfied). To date, the Company has not recognized any development, regulatory or commercial milestones or royalty revenue resulting from any of its collaboration arrangements. Consideration that would be received for optional goods and/or services is excluded from the transaction price at contract inception.

The Company allocates the transaction price to each performance obligation identified in the contract on a relative standalone selling price basis. However, certain components of variable consideration are allocated specifically to one or more particular performance obligations in a contact to the extent both of the following criteria are met: (i) the terms of the payment relate specifically to the efforts to satisfy the performance obligation or transfer the distinct good or service and (ii) allocating the variable amount of consideration entirely to the performance obligation or the distinct good or service is consistent with the allocation objective of the standard whereby the amount allocated depicts the amount of consideration to which the entity expects to be entitled in exchange for transferring the promised goods or services. The Company develops assumptions that require judgment to determine the standalone selling price for each performance obligation identified in each contract. The key assumptions utilized in determining the standalone selling price for each performance obligation may include forecasted revenues, development timelines, estimated research and development costs, discount rates, likelihood of exercise and probabilities of technical and regulatory success.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

5. Revenue Recognition (continued)

Revenue is recognized based on the amount of the transaction price that is allocated to each respective performance obligation when or as the performance obligation is satisfied by transferring a promised good and/or service to the customer. For performance obligations that are satisfied over time, the Company recognizes revenue by measuring the progress toward complete satisfaction of the performance obligation using a single method of measuring progress which depicts the performance in transferring control of the associated goods and/or services to the customer. The Company uses input methods to measure the progress toward the complete satisfaction of performance obligations satisfied over time. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment.

As it relates to the Ares Trading Agreement (Note 6), the Company recognized the upfront payment associated with its one open contract as a contract liability upon receipt of payment as it requires deferral of revenue recognition to a future period until the Company performs its obligations under the arrangement. The Company determined that there were three performance obligations; the first performance obligation consists of the license and research development services and the other two performance obligations are material rights as it relates to potential future targets that have not yet been identified. As described above, the transaction price of $57.5 million was allocated to the performance obligations based on their relative standalone selling prices (Note 6).

The Company did not believe that any variable consideration should be included in the transaction price at the date of adoption of ASC 606 on January 1, 2018. Such assessment considered the application of the constraint to ensure that estimates of variable consideration would be included in the transaction price only to the extent the Company had a high degree of confidence that revenue would not be reversed in a subsequent reporting period. The Company re-evaluated the transaction price, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period since adoption, as applicable.

On October 5, 2018, the Company entered into the license agreement with Precigen (Note 8). As between the Company and Precigen, the terms of the License Agreement replace the terms of: (a) the Channel Agreement previously entered into with Intrexon Corporation (the “Channel Agreement”), including all amendments to the Channel Agreement; (b) certain rights and obligations pursuant to the Ares Trading Agreement; (c) the MD Anderson License (Note 6); and (d) that certain Research and Development Agreement between the Company, Intrexon and The University of Texas MD Anderson Cancer Center, or MD Anderson, with an effective date of August 17, 2015 or the Research and Development Agreement, and any amendments or statements of work thereto.

In partial consideration of the Company entering into the License Agreement, Precigen is required to use diligent good faith efforts to transfer the Company’s rights and obligations under the Ares Trading Agreement to Intrexon (or its affiliate). As a result, the Company has very limited remaining obligations under the Ares Trading Agreement, and following the Company’s entry into the License Agreement, will not be recognizing any additional revenue under the Ares Trading Agreement.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

6. Commitments and Contingencies

License Agreements

Exclusive License Agreement with Precigen, Inc.

On October 5, 2018, the Company entered into the License Agreement, with Precigen. As between the Company and Precigen, the terms of the License Agreement replace and supersede the terms of: (a) that certain Exclusive Channel Partner Agreement by and between the Company and Intrexon, dated January 6, 2011, as amended by the First Amendment to Exclusive Channel Partner Agreement effective September 13, 2011, the Second Amendment to the Exclusive Channel Partner Agreement effective March 27, 2015, and the Third Amendment to Exclusive Channel Partner Agreement effective June 29, 2016, which was subsequently assigned by Intrexon to Precigen; (b) certain rights and obligations pursuant to that certain License and Collaboration Agreement effective March 27, 2015 between the Company, Intrexon and ARES TRADING S.A., or Ares Trading, a subsidiary of Merck KGaA, or Merck, as assigned by Intrexon to Precigen, or the Ares Trading Agreement; (c) that certain License Agreement between the Company, Intrexon, and MD Anderson, with an effective date of January 13, 2015, or the MD Anderson License, which was subsequently assigned by Intrexon and assumed by Precigen effective as of January 1, 2018; and (d) that certain Research and Development Agreement between the Company, Intrexon and MD Anderson with an effective date of August 17, 2015, or the Research and Development Agreement, and any amendments or statements of work thereto.

Pursuant to the terms of the License Agreement, Precigen has granted the Company an exclusive, worldwide, royalty-bearing, sub-licensable license to research, develop and commercialize (i) products utilizing Precigen’s RheoSwitch^® gene switch, or RTS, for the treatment of cancer, referred to as IL-12 Products, (ii) CAR products directed to (A) CD19 for the treatment of cancer, referred to as CD19 Products, and (B) a second target, subject to the rights of Merck to pursue such target under the Ares Trading Agreement, and (iii) TCR products designed for neoantigens for the treatment of cancer. Precigen has also granted the Company an exclusive, worldwide, royalty-bearing, sub-licensable license for certain patents relating to the Sleeping Beauty technology to research, develop and commercialize TCR products for both neoantigens and shared antigens for the treatment of cancer, referred to as TCR Products.

The Company will be solely responsible for all aspects of the research, development and commercialization of the exclusively licensed products for the treatment of cancer. The Company is required to use commercially reasonable efforts to develop and commercialize IL-12 products and CD19 products and after a two-year period, the TCR Products.

Precigen has also granted the Company an exclusive, worldwide, royalty-bearing, sub-licensable license to research, develop and commercialize products utilizing an additional construct that expresses RTS IL-12 for the treatment of cancer, referred to as Gorilla IL-12 Products.

In consideration of the licenses and other rights granted by Precigen, the Company will pay Precigen an annual license fee of $0.1 million and has agreed to reimburse Precigen for certain historical costs of the licensed programs up to $1.0 million, payable quarterly.

The Company will make milestone payments totaling up to an additional $52.5 million for each exclusively licensed program upon the initiation of later stage clinical trials and upon the approval of exclusively licensed products in various jurisdictions. In addition, the Company will pay Precigen tiered royalties ranging from low-single digit to high-single digit on the net sales derived from the sales of any approved IL-12 products and CAR products. The Company will also pay Precigen royalties ranging from low-single digit to mid-single digit on the net sales derived from the sales of any approved TCR Products, up to a maximum royalty amount of $100.0 million in the aggregate. The Company will also pay Precigen 20% of any sublicensing income received by the Company relating to the licensed products.

The Company is responsible for all development costs associated with each of the licensed products, other than Gorilla IL-12 products. The Company and Precigen will share the development costs and operating profits for Gorilla IL-12 products, with the Company responsible for 80% of the development costs and receiving 80% of the operating profits, and Precigen responsible for the remaining 20% of the development costs and receiving 20% of the operating profits.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

6. Commitments and Contingencies (Continued)

Precigen will pay the Company royalties ranging from low-single digits to mid-single digits on the net sales derived from the sale of Precigen’s CAR products, up to $50.0 million.

In consideration of entering into the License Agreement, Intrexon has forfeited and returned to the Company all shares of Series 1 preferred stock held by or payable to Intrexon as of the date of the License Agreement (Note 8).

License Agreement—The University of Texas MD Anderson Cancer Center

On January 13, 2015, the Company, together with Intrexon, entered into the MD Anderson License with MD Anderson (which Intrexon subsequently assigned to Precigen). Pursuant to the MD Anderson License, the Company, together with Precigen, holds an exclusive, worldwide license to certain technologies owned and licensed by MD Anderson including technologies relating to novel CAR T-cell therapies, non-viral gene transfer systems, genetic modification and/or propagation of immune cells and other cellular therapy approaches, Natural Killer, or NK Cells, and TCRs, arising from the laboratory of Laurence Cooper, M.D., Ph.D., who became the Company’s Chief Executive Officer in May 2015 and was formerly a tenured professor of pediatrics at MD Anderson and is now currently a visiting scientist under that institution’s policies.

On August 17, 2015, the Company, Precigen and MD Anderson entered into the Research and Development Agreement, to formalize the scope and process for the transfer by MD Anderson, pursuant to the terms of the MD Anderson License, of certain existing research programs and related technology rights, as well as the terms and conditions for future collaborative research and development of new and ongoing research programs.

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ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

6. Commitments and Contingencies (Continued)

Pursuant to the Research and Development Agreement, the Company, Precigen and MD Anderson formed a joint steering committee to oversee and manage the new and ongoing research programs. Under the License Agreement with Precigen, the Company and Precigen agreed that Precigen would no longer participate on the joint steering committee after the date of the License Agreement. As provided under the MD Anderson License, the Company provided funding for research and development activities in support of the research programs under the Research and Development Agreement for a period of three years and in an amount of no less than $15.0 million and no greater than $20.0 million per year. On November 14, 2017, the Company entered into an amendment to the Research and Development Agreement extending its term until April 15, 2021. During the six months ended June 30, 2019 and 2018, the Company expensed approximately $3.0 million and $2.2 million, respectively, for its research programs being conducted in Houston. The net balance of cash resources on hand at MD Anderson available to offset expenses and future costs is $24.2 million, of which $19.4 million is included in other current assets and the remaining $4.8 million is included in non-current assets at June 30, 2019. At December 31, 2018, the net balance of cash resources on hand at MD Anderson available to offset expenses and future costs was $27.8 million, of which $18.4 million was included in other current assets and the remaining $9.4 million was included in non-current assets.

The term of the MD Anderson License expires on the last to occur of (a) the expiration of all patents licensed thereunder, or (b) the twentieth anniversary of the date of the MD Anderson License; provided, however, that following the expiration of the term of the MD Anderson License, the Company, together with Precigen, shall then have a fully-paid up, royalty free, perpetual, irrevocable and sublicensable license to use the licensed intellectual property thereunder. After ten years from the date of the MD Anderson License and subject to a 90-day cure period, MD Anderson will have the right to convert the MD Anderson License into a non-exclusive license if the Company and Precigen are not using commercially reasonable efforts to commercialize the licensed intellectual property on a case-by-case basis. After five years from the date of the MD Anderson License and subject to a 180-day cure period, MD Anderson will have the right to terminate the MD Anderson License with respect to specific technology(ies) funded by the government or subject to a third-party contract if the Company and Precigen are not meeting the diligence requirements in such funding agreement or contract, as applicable. MD Anderson may also terminate the agreement with written notice upon material breach by the Company and Precigen, if such breach has not been cured within 60 days of receiving such notice. In addition, the MD Anderson License will terminate upon the occurrence of certain insolvency events for both the Company and Precigen and may be terminated by the mutual written agreement of the Company, Precigen, and MD Anderson.

License Agreement with the National Cancer Institute

On May 28, 2019, the Company entered into a patent license agreement, or the Patent License, with the National Cancer Institute, or the NCI. Pursuant to the Patent License, the Company holds an exclusive, worldwide license to certain intellectual property to develop and commercialize patient-derived (autologous), peripheral blood T-cell therapy products engineered by transposon-mediated gene transfer to express TCRs reactive to mutated KRAS, p53 and EGFR. In addition, pursuant to the Patent License, the Company holds an exclusive, worldwide license to certain intellectual property for manufacturing technologies to develop and commercialize autologous, peripheral blood T-cell therapy products engineered by non-viral gene transfer to express TCRs, as well as a non-exclusive, worldwide license to certain additional manufacturing technologies.

Pursuant to the terms of the Patent License, the Company is required to pay the NCI a cash payment in the aggregate amount of $1.5 million, which is included in current liabilities at June 30, 2019. The Company also agreed to reimburse the NCI for past patent expenses in the aggregate amount of approximately $46 thousand. At June 30, 2019, the Company recorded both the $1.5 million payment due upon the execution of the Patent License and the $46 thousand in patent expenses for accrued current liabilities on the Company’s balance sheet.

19

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

6. Commitments and Contingencies (Continued)

The terms of the Patent License also require the Company to pay the NCI minimum annual royalties in the amount of $0.3 million, which amount will be reduced to $0.1 million once the aggregate minimum annual royalties paid by the Company equals $1.5 million. The first minimum annual royalty payment is payable on the date that is eighteen months following the date of the Patent License.

The Company is also required to make performance-based payments upon successful completion of clinical and regulatory benchmarks relating to the licensed products. The aggregate potential benchmark payments are $4.3 million, of which aggregate payments of $3.0 million are due only after marketing approval in the United States or in Europe, Japan, Australia, China or India. The first benchmark payment of $0.1 million will be due upon the initiation of the Company’s first sponsored phase 1 clinical trial of a licensed product or licensed process in the field of use licensed under the Patent License.

In addition, the Company is required to pay the NCI one-time benchmark payments following aggregate net sales of licensed products at certain net sales up to $1.0 billion. The aggregate potential amount of these benchmark payments is $12.0 million. The Company must also pay the NCI royalties on net sales of products covered by the Patent License at rates in the low to mid-single digits depending upon the technology included in a licensed product. To the extent the Company enters into a sublicensing agreement relating to a licensed product, the Company is required to pay the NCI a percentage of all consideration received from a sublicensee, which percentage will decrease based on the stage of development of the licensed product at the time of the sublicense.

The Patent License will expire upon expiration of the last patent contained in the licensed patent rights, unless terminated earlier. The NCI may terminate or modify the Patent License in the event of a material breach, including if the Company does not meet certain milestones by certain dates, or upon certain insolvency events that remain uncured following the date that is 90 days following written notice of such breach or insolvency event. The Company may terminate the Patent License, or any portion thereof, in the Company’s sole discretion at any time upon 60 days’ written notice to the NCI. In addition, the NCI has the right to: (i) require the Company to sublicense the rights to the product candidates covered by the Patent License upon certain conditions, including if the Company is not reasonably satisfying required health and safety needs and (ii) terminate or modify the Patent License, including if the Company is not satisfying requirements for public use as specified by federal regulations.

Cooperative Research and Development Agreement (CRADA) with the National Cancer Institute

On January 10, 2017, the Company announced the signing of a Cooperative Research and Development Agreement, or CRADA, with the NCI for the development of adoptive cell transfer, or ACT,-based immunotherapies genetically modified using the Sleeping Beauty transposon/transposase system to express TCRs for the treatment of solid tumors. The principal goal of the CRADA is to develop and evaluate ACT for patients with advanced cancers using autologous peripheral blood lymphocytes, or PBL, genetically modified using the non-viral Sleeping Beauty system to express TCRs that recognize neoantigens expressed within a patient’s cancer. Research conducted under the CRADA will be at the direction of Steven A. Rosenberg, M.D., Ph.D., Chief of the Surgery Branch at the NCI, in collaboration with the Company’s researchers.

In February 2019, the Company extended the CRADA with the NCI for two years, committing an additional $5.0 million to this program through January 2022. The remaining obligation, as of June 30, 2019, to the NCI under the CRADA is $6.3 million over the next two years, payable in $0.6 million payments on a quarterly basis. The Company made payments of $0.6 million and $1.3 million, during the three and six months ended June 30, 2019 and 2018, respectively.

Exclusive Channel Partner Agreement with Precigen for the Cancer Programs

From 2011 to 2018, the Company was party to various arrangements with Intrexon (now Precigen) in which the Company used Precigen’s technology to research and develop cancer treatments in return for various future profit sharing and royalty arrangements. These agreements were modified or terminated by the License Agreement described in Note 8.

20

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

6. Commitments and Contingencies (Continued)

Ares Trading License and Collaboration Agreement

On March 27, 2015, the Company, together with Intrexon (now Precigen), signed the Ares Trading Agreement, with Ares Trading, through which the parties established a collaboration for the research and development and commercialization of certain products for the prophylactic, therapeutic, palliative or diagnostic use for cancer in humans.

Precigen was entitled to receive $5.0 million, from Ares Trading, payable in equal quarterly installments over two years for each identified product candidate, which will be used to fund discovery work. The Company was responsible for costs exceeding the quarterly installments and all other costs of the preclinical research and development. For the three and six months ended June 30, 2018, the Company expensed $36 thousand under the Ares Trading Agreement. The Company did not incur any costs under the agreement for the six months ended June 30, 2019 as there are no continuing obligations to reimburse Precigen for expenses under the Ares Trading Agreement under the terms of the License Agreement with Precigen.

Ares Trading paid a non-refundable upfront fee of $115.0 million to Intrexon as consideration for entry into the Ares Trading Agreement. Pursuant to the Third Amendment to Exclusive Channel Partner Agreement, or the 2016 ECP Amendment, the Company was entitled to receive 50% of the upfront fee, or $57.5 million, which was received from Intrexon in July 2015.

Under the License Agreement, Precigen agreed to perform all future obligations of the Company under the Ares Trading Agreement other than certain payment obligations. Accordingly, the Company recognized the remaining deferred revenue as part of the settlement of a related party relationship as described in Note 8.

21

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

6. Commitments and Contingencies (Continued)

Patent and Technology License Agreement—The University of Texas MD Anderson Cancer Center and the Texas A&M University System

On August 24, 2004, the Company entered into a patent and technology license agreement with MD Anderson and the Texas A&M University System, which the Company refers to, collectively, as the Licensors. Under this agreement, the Company was granted an exclusive, worldwide license to rights (including rights to U.S. and foreign patent and patent applications and related improvements and know-how) for the manufacture and commercialization of two classes of organic arsenicals (water- and lipid-based) for human and animal use. The class of water-based organic arsenicals includes darinaparsin.

Under the terms of the agreement, the Company may be required to make additional payments to the Licensors upon achievement of certain other milestones in varying amounts which, on a cumulative basis could total up to an additional $4.5 million. In addition, the Licensors are entitled to receive single digit percentage royalty payments on sales from a licensed product and will also be entitled to receive a portion of any fees that the Company may receive from a possible sublicense under certain circumstances.

Collaboration Agreement with Solasia Pharma K.K.

On March 7, 2011, the Company entered into a License and Collaboration Agreement with Solasia which was amended on July 31, 2014 to include an exclusive worldwide license. Pursuant to the License and Collaboration Agreement, the Company granted Solasia an exclusive license to develop and commercialize darinaparsin in both intravenous and oral forms and related organic arsenic molecules, in all indications for human use

As consideration for the license, the Company is eligible to receive from Solasia development- and sales-based milestones, a royalty on net sales of darinaparsin, once commercialized, and a percentage of any sublicense revenues generated by Solasia.

22

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

6. Commitments and Contingencies (Continued)

Solasia will be responsible for all costs related to the development, manufacturing and commercialization of darinaparsin. The Company’s Licensors, as defined in the agreement, will receive a portion of all milestone and royalty payments made by Solasia to the Company in accordance with the terms of the license agreement with the Licensors.

7. Related Party Transactions

Collaborations with Intrexon/ Precigen

During the three months ended June 30, 2018, the Company issued an aggregate of 3,734 shares of Series 1 preferred stock to Intrexon, the holder of all of the outstanding shares of the Company’s Series 1 preferred stock, as monthly dividend payments. At June 30, 2018, the Company recorded such shares of Series 1 preferred stock at a fair value of $5.4 million which is a component of temporary equity. During the six months ended June 30, 2018, the Company recorded a gain on the change of the derivative liabilities in the amount of $0.2 million.

During the six months ended June 30, 2019 and 2018, the Company expensed $1.5 million and $4.7 million, respectively, for services performed by Precigen. As of June 30, 2019 and 2018, the Company recorded $1.1 million and $1.9 million, respectively, in current liabilities on its balance sheet for amounts due to Precigen.

On October 5, 2018, the Company entered into the License Agreement, the terms of which replaced the terms of the Channel Agreement.

23

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

Collaboration with Precigen and MD Anderson

On January 13, 2015, the Company, together with Intrexon, entered into the MD Anderson License with MD Anderson (which Intrexon subsequently assigned to Precigen). Pursuant to the MD Anderson License, the Company, together with Precigen, hold an exclusive, worldwide license to certain technologies owned and licensed by MD Anderson including technologies relating to novel CAR T cell therapies, non-viral gene transfer systems, genetic modification and/or propagation of immune cells and other cellular therapy approaches, Natural Killer, or NK Cells, and TCRs, arising from the laboratory of Laurence Cooper, M.D., Ph.D., who became the Company’s Chief Executive Officer in May 2015 and was formerly a tenured professor of pediatrics at MD Anderson and is now currently a visiting scientist under that institution’s policies. In partial consideration for entering into the MD Anderson License, the Company issued MD Anderson an aggregate of 11,722,163 shares of common stock for which the Company incurred a $67.3 million charge recorded in 2015.

The Company has determined that the rights acquired in the MD Anderson License represent in-process research and development with no alternative future use. During the six months ended June 30, 2018, the Company made one quarterly payment totaling $2.7 million, bringing the total aggregate payments to $41.9 million under this arrangement. The net balance of cash resources on hand at MD Anderson available to offset expenses and future costs is $24.2 million, of which $19.4 million is included in other current assets and the remaining $4.8 million is included in non-current assets at June 30, 2019. The classification is based on management’s current estimate of plans to utilize the prepaid balance and is subject to revision on a quarterly basis.

8. Settlement of a Related Party Relationship

Exclusive License Agreement with Precigen

On October 5, 2018, the Company entered into the license agreement with Precigen. As between the Company and Precigen, the terms of the License Agreement replace the terms of: (a) the Channel Agreement, including all amendments to the Channel Agreement; (b) certain rights and obligations pursuant to the Ares Trading Agreement; (c) the MD Anderson License; and (d) the Research and Development Agreement, and any amendments or statements of work thereto.

Pursuant to the terms of the License Agreement, Precigen has granted the Company an exclusive, worldwide, royalty-bearing, sub-licensable license to research, develop and commercialize (i) products utilizing Precigen’s RheoSwitch^® gene switch, or RTS, for the treatment of cancer, referred to as IL-12 Products, (ii) CAR products directed to (A) CD19 for the treatment of cancer, referred to as CD19 Products, and (B) a second target, subject to the terms of the Ares Trading Agreement, and (iii) TCR Products designed for neoantigens for the treatment of cancer. Precigen has also granted the Company an exclusive, worldwide, royalty-bearing, sub-licensable license for certain patents relating to the Sleeping Beauty technology to research, develop and commercialize TCR Products.

24

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

8. Settlement of a Related Party Relationship (continued)

The Company is solely responsible for all aspects of the research, development and commercialization of the exclusively licensed products for the treatment of cancer. The Company is required to use commercially reasonable efforts to develop and commercialize IL-12 Products and CD19 Products and after a two-year period, the TCR Products. Precigen has also granted the Company an exclusive, worldwide, royalty-bearing, sub-licensable license to research, develop and commercialize Gorilla IL-12 Products.

Ziopharm agreed to reimburse Precigen for certain historical costs of the licensed programs up to $1.0 million, payable quarterly. The Company determined that the fair value of this program was $1.0 million, and this was expensed in accordance with ASC 730, Research and Development, during the year ended December 31, 2018 and it was included in accrued expense on the balance sheet. The accrued balance is $0.8 million at June 30, 2019.

The agreement also calls for an annual license fee of $0.1 million as long as the agreement is effective. The Company will also make milestone payments totaling up to an additional $52.5 million for each exclusively licensed program upon the initiation of later stage clinical trials and upon the approval of exclusively licensed products in various jurisdictions. In addition, the Company will pay Precigen tiered royalties ranging from low-single digit to high-single digit on the net sales derived from the sales of any approved IL-12 Products and CAR Products. The Company will also pay Precigen royalties ranging from low-single digit to mid-single digit on the net sales derived from the sales of any approved TCR Products, up to a maximum royalty amount of $100.0 million in the aggregate. The Company will also pay Precigen 20% of any sublicensing income received by the Company relating to the licensed products.

The Company is responsible for all development costs associated with each of the licensed products, other than Gorilla IL-12 Products. The Company and Precigen will share the development costs and operating profits for Gorilla IL-12 Products, with the Company responsible for 80% of the development costs and receiving 80% of the operating profits, and Precigen responsible for the remaining 20% of the development costs and receiving 20% of the operating profits.

Precigen will pay the Company royalties ranging from low-single digits to mid-single digits on the net sales derived from the sale of Precigen’s CAR products, up to $50.0 million.

In consideration of the Company entering into the License Agreement, Intrexon forfeited and returned to the Company all shares of the Company’s Series 1 preferred stock held by or payable to Intrexon as of the date of the License Agreement. In addition, Precigen is required to transfer all of Ziopharm’s rights and obligations under the Ares Trading Agreement to Intrexon (or its affiliate). See Note 6 for further information regarding the Company’s remaining obligations under the Ares Trading Agreement.

The Company determined that this transaction represented a capital transaction between related parties. The Company calculated the fair value of the preferred stock and the derivative liability on the date of the transaction, noting a total fair value of $163.3 million. The relinquishment of the Company’s obligation under the Ares Trading Agreement was also considered part of the overall capital transaction. The Company recognized an additional credit to accumulated deficit of $49.5 million as a result of the relief of the obligation under the Ares Trading Agreement (Note 6). The total amount of the settlement was $212.8 million.

The Company incurred approximately $7.4 million of transaction advisory costs with third-party vendors, of which $5.4 million was considered a direct cost associated with the Series 1 preferred stock extinguishment and is also included as part of the consideration transferred. The remaining $2.0 million of transaction costs were recognized as an expense during the year ended December 31, 2018.

The Company recognized a net credit to accumulated deficit of $207.3 million, calculated as the difference in the carrying value of the Series 1 preferred stock, derivative liability, and contract liability, and the consideration transferred of $5.4 million, in connection with the transaction. This amount is included in net income available to common shareholders in the calculation of earnings per share (Note 4).

25

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

9. Leases

The Company adopted Topic 842 on January 1, 2019 using the effective date method, in which it did not restate prior periods. Upon adoption, the Company elected the package of practical expedients permitted under the transition guidance within Topic 842 which, among other things, allowed it to carry forward the historical lease classification. The Company does not allocate consideration in its leases to lease and non-lease components and does not record leases on its balance sheets with terms of 12 months or less.

The Company uses its estimated incremental borrowing rate, which is derived from information available at the lease commencement date, in determining the present value of lease payments. The Company’s incremental borrowing rate represents the rate of interest that it would have to pay to borrow over a similar term an amount equal to the lease payments in a similar economic environment. The Company considers publicly available data for instruments with similar terms and characteristics when determining its incremental borrowing rates.

The adoption of Topic 842 resulted in recognition of approximately $1.6 million of right-of-use assets and $1.6 million of lease liabilities on the Company’s balance sheets. The adoption did not have a material impact on the Company’s statements of operations or accumulated deficit. The Company has implemented changes to related processes, controls, and disclosures in connection with the adoption of Topic 842. The Company will review the classification of newly entered leases as either an operating or a finance lease and recognize a related right-of-use asset and lease liabilities on its balance sheets upon commencement.

In June 2012, the Company entered into a master lease for the Company’s corporate headquarters in Boston office, which was originally set to expire in August 2016, but renewed through August 31, 2021. As of June 30, 2019, and December 31, 2018, a total security deposit of $0.1 million is included in deposits on the Company’s balance sheet.

On January 30, 2018, the Company entered into a lease agreement for office space in Houston at MD Anderson. Under the terms of the Houston lease agreement, the Company leases approximately two hundred and ten square feet and are required to make rental payments at an average monthly rate of approximately $1 thousand through April 2021. All future rent expense incurred in Houston, will be deducted from the Company’s prepayments at MD Anderson.

On March 12, 2019, the Company entered into a lease agreement for office space in Houston. Under the terms of the Houston lease agreement, the Company leases approximately one thousand and thirty-eight square feet and is required to make rental payments at an average monthly rate of approximately $2 thousand through April 2021. As of June 30, 2019, a total security deposit of $2 thousand is included in deposits on the Company’s balance sheet.

The components of lease expense were as follows:

Cash paid for amounts included in the measurement of the lease liabilities were $0.4 million for the six months ended June 30, 2019.

26

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

9. Leases (continued)

As of June 30, 2019, the maturities of the Company’s operating lease liabilities were as follows (in thousands):

Disclosures related to periods prior to adoption of the New Lease Standard

Prior to the adoption of ASC 842, the Company recorded rent expense on a straight-line basis over the term of the lease under ASC 840. Total rent expense for the three and six months ended June 30, 2018 was approximately $0.2 million and $0.4 million, respectively.

For comparative purposes, the Company’s aggregate future minimum non-cancellable commitments under operating leases as of December 31, 2018 were as follows:

27

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

10. Stock-Based Compensation

The Company recognized stock-based compensation expense on all employee and non-employee awards as follows:

The Company granted an aggregate of 199,422 and 1,695,755 stock options during the three and six months ended June 30, 2019 with a weighted-average grant date fair value of $3.13 and $1.80 per share, respectively. The Company granted an aggregate of 198,000 and 205,500 stock options during the three and six months ended June 30, 2018 with a weighted average grant date fair value of $3.06 and $3.06 per share, respectively.

On January 6, 2019, the Company paid an accrued annual performance bonus by issuing 446,428 shares of common stock.

On June 13, 2019 the Company extended the contractual life of 52,500 fully vested stock options held by a director of the Company. Additionally, on June 13, 2019, the Company accelerated the vesting and extended the contractual life of 126,700 stock options held by a director. These extensions and acceleration of vesting resulted in additional stock compensation expense of $0.4 million in the three and six months ended June 30, 2019.

On February 15, 2018, the Company extended the contractual life of 751,667 fully vested stock options held by an officer of the Company by an additional nine months. Additionally, on March 12, 2018, the Company extended the contractual life of 117,500 fully vested stock options held by a director. These extensions resulted in additional stock compensation expense of $0 and $0.5 million in the three and six months ended June 30, 2018, respectively.

The Company recognizes forfeitures as they occur.

For the three months ended June 30, 2019 and 2018, the fair value of stock options was estimated on the date of grant using a Black-Scholes option valuation model with the following assumptions:

28

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

10. Stock-Based Compensation – (continued)

Stock option activity under the Company’s stock option plan for the six months ended June 30, 2019 is as follows:

At June 30, 2019, total unrecognized compensation costs related to unvested stock options outstanding amounted to $5.6 million. The cost is expected to be recognized over a weighted-average period of 1.58 years.

A summary of the status of unvested restricted stock for the six months ended June 30, 2019 is as follows:

At June 30, 2019, total unrecognized compensation costs related to unvested restricted stock outstanding amounted to $3.3 million. The cost is expected to be recognized over a weighted-average period of 1.54 years.

29

ZIOPHARM Oncology, Inc.

NOTES TO FINANCIAL STATEMENTS (unaudited)

11. Preferred Stock

The Company’s Board of Directors is authorized to designate any series of Preferred Stock, to fix and determine the variations in relative rights, preferences, privileges and restrictions as between and among such series.

On June 29, 2016, the Company entered into the 2016 ECP Amendment and Amendment to Exclusive Channel Collaboration Agreement, or the 2016 GvHD Amendment, with Intrexon (now Precigen) (Note 6). In consideration for the execution and delivery of the 2016 ECP Amendment and the 2016 GvHD Amendment, the Company issued to Intrexon 100,000 shares of its newly designated Series 1 preferred stock. Each share of the Company’s Series 1 preferred stock had a stated value of $1,200, subject to appropriate adjustment in the event of any stock dividend, stock split, combination or other recapitalization. The Series 1 preferred stock had certain rights, preferences, privileges and obligations, including dividend rights, conversion rights, consent rights with respect to certain Company actions, and rights to preferential payments in the event of any voluntary or involuntary liquidation, dissolution or winding up of the Company or a change of control or sale, lease, transfer or exclusive license of all or substantially all of the Company’s assets prior to the conversion of the Series 1 preferred stock.

On October 5, 2018, the Company and Precigen entered into the License Agreement to replace all existing agreements between the companies, which provides the Company with certain exclusive and non-exclusive rights to technology controlled by Precigen. In consideration of the Company entering into the License Agreement, Intrexon forfeited and returned to the Company all shares of the Company’s Series 1 preferred stock held by or payable to Intrexon as of the date of the License Agreement (Notes 6, 7 and 8).

12. Derivative Financial Instruments

The Company determined that certain embedded features related to the Series 1 preferred stock were derivative financial instruments. The company values the embedded derivative financial instruments related to the Series 1 preferred stock as Level 3 financial liabilities (Note 3).

On October 5, 2018, the Company entered into the License Agreement with Precigen. In partial consideration for the termination of the former agreements, the Company and Precigen agreed that Intrexon would forfeit all outstanding shares of the Series 1 preferred stock held by Intrexon, including any accrued dividends and related financial instruments. Thus, upon closing of the transaction, these derivative financial instruments were no longer outstanding (Note 8).

13. Warrants

In connection with the Company’s November 2018 private placement which provided net proceeds of approximately $47.1 million, the Company issued warrants to purchase an aggregate of 18,939,394 shares of common stock which became exercisable six months after the closing of the private placement. The warrants have an exercise price of $3.01 per share and have a five-year term. The relative fair value of the warrants was estimated at $18.4 million using a Black-Scholes model with the following assumptions: expected volatility of 71%, risk free interest rate of 2.99%, expected life of five years and no dividends.

The Company assessed whether the warrants require accounting as derivatives. The Company determined that the warrants were (1) indexed to the Company’s own stock and (2) classified in stockholders’ equity in accordance with Financial Accounting Standards Board (FASB”) Accounting Standards Codification (“ASC”) Topic 815, Derivatives and Hedging. As such, the Company has concluded the warrants meet the scope exception for determining whether the instruments require accounting as derivatives and should be classified in stockholders’ equity.

On July 29, 2019, the Company announced that it entered into an agreement with existing investors for the exercise of warrants issued during the November 2018 private placement to purchase common stock in a new private placement (Note 2).

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Forward Looking Statements

This Quarterly Report on Form 10-Q contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These statements relate to our future plans, objectives, expectations and intentions and may be identified by words such as “may,” “will,” “should,” “expects,” “plans,” “anticipates,” “intends,” “targets,” “projects,” “contemplates,” “believes,” “seeks,” “goals,” “estimates,” “predicts,” “potential” and “continue” or similar words. In particular, statements contained in this Quarterly Report, including but not limited to, statements regarding our ability to raise substantial additional capital to fund our planned operations; the costs and timing of our clinical trials and of the development and commercialization of our pipeline products; the sufficiency of our cash and cash flows from operations and our expected uses of cash; our ability to finance our operations and business initiatives and obtain funding for such activities; our future results of operations and financial position, business strategy and plan prospects, projected revenue or costs and objectives of management for future research, development or operations, are forward-looking statements. Readers are cautioned that these forward-looking statements are only predictions and are subject to risks, uncertainties, and assumptions that are difficult to predict, including those discussed in Part II, Item 1A. “Risk Factors” section of this Quarterly Report. Therefore, actual results may differ materially and adversely from those expressed in any forward-looking statements. Except as required by law, we undertake no obligation to revise or update any forward-looking statements after the date of this Quarterly Report.

Overview

We are a clinical-stage biopharmaceutical company focused on discovering, acquiring, developing and commercializing next generation immunotherapy platforms that leverage cell- and gene-based therapies to treat patients with cancer. We are developing two immuno-oncology platform technologies that utilize the immune system by employing novel, controlled gene expression and innovative cell engineering technologies designed to deliver safe, effective, and scalable non-viral cell- and viral-based gene therapies for the treatment of multiple cancer types. Our first platform is referred to as Sleeping Beauty and is based on the genetic engineering of immune cells using a non-viral transposon/transposase system that is intended to stably reprogram T cells outside of the body for subsequent infusion. Our second platform is termed Controlled IL-12, which is designed to stimulate expression of interleukin 12, or IL-12, a master regulator of the immune system, in a controlled and safe manner to focus the patient’s immune system to attack cancer cells. We believe these two platforms have the potential to provide unique and powerful solutions to address the issues associated with (1) treating solid tumors with heterogeneous and unknown antigens, and (2) providing cost-effective scalable manufacturing solutions for T cell receptor T cell, or TCR⁺ T, therapies for solid tumors and chimeric antigen receptor, or CAR T cell, or CAR⁺ T, therapies targeting CD19 on malignant B cells. We expect programs from our two platform technologies to be in the clinic in 2019.

Using our Sleeping Beauty platform, we are developing TCR+ T therapies initially to target solid tumors. Our T cell receptor, or TCR, program designs and manufactures T cells that are intended to target tumor-specific antigens, thereby delivering personalized therapy that can attack an individual patient’s cancer. These antigens are referred to as neoantigens as they are only expressed by the tumor, reducing the potential for toxicity upon targeting normal cells. A minority of neoantigens are shared between patients and between classes of tumors and are referred to as “hotspots”. The Sleeping Beauty system uses DNA plasmids to reprogram T cells to express introduced TCRs on a patient-by-patient basis (addressing inter-tumor heterogeneity) and possibly to express more than one TCR for each patient (addressing intra-tumor heterogeneity). The genetic modification using the Sleeping Beauty system of recipient-derived products enables us to target neoantigens in two ways. The first recognizes that most neoantigens are unique to each patient’s tumor and we plan to infuse TCR+ T cells expressing recipient-derived (autologous) TCRs. The second is based on the finding that some neoantigens in hotspots are shared between patients and we plan to administer TCR+ T expressing allogeneic TCRs from a library derived from third parties. We believe the scalability of our approach provides a competitive advantage to alternative viral-based approaches to T cell manufacturing. Under our Cooperative Research and Development Agreement, or CRADA, the National Cancer Institute, or the NCI, intends to initiate a clinical trial in patients with a variety of solid tumors using the Sleeping Beauty platform to genetically modify T cells to target patient-specific neoantigens in mid-2019. The clinical trial will be under the direction of Steven A. Rosenberg, M.D., Ph.D., Chief of the Surgery Branch at the NCI.

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We are also developing CAR+ T therapies using our Sleeping Beauty platform. Our CAR+ T program seeks to solve the complex and costly manufacturing limitations of existing CD19-specific CAR+ T therapies that we believe will continue limiting their commercial potential. We believe using DNA plasmids in the Sleeping Beauty system to express a CD19-specific CAR and our proprietary membrane-bound interleukin 15, or mbIL15, in resting T cells obtained from peripheral blood will enable infused T cells to propagate within the patient to target leukemia and lymphoma, thus avoiding the need to numerically expand T cells for weeks in bioreactors before patient administration. The mbIL15 is co-expressed with a “kill switch” or “safety switch” to conditionally eliminate infused T cells. We expect the lower cost of DNA plasmids compared with the virus used by other CAR+ T programs, together with the avoidance of lengthy ex vivo manufacturing, will reduce the cost and complexity of manufacturing CAR+ T cells. These technologies should enable T cells to be infused within two days of gene transfer in a process we refer to as rapid personalized manufacture, or RPM. We are advancing our CAR+ T therapies in the United States in collaboration with The University of Texas MD Anderson Cancer Center, or MD Anderson, to target CD19 on malignant B cells. In addition, in a joint venture with TriArm Therapeutics, Ltd., or TriArm, we have formed Eden BioCell, Ltd., or Eden BioCell, to lead clinical development and commercialization of Sleeping Beauty-generated CD19-specific RPM CAR-T therapies in the People’s Republic of China, Taiwan and Korea. Eden BioCell is owned equally by us and TriArm and the parties share decision-making authority. TriArm has committed up to $35.0 million to this joint venture and will manage all clinical development to execute trials in the territory.

Our Controlled IL-12 platform uses virotherapy based on an engineered replication-incompetent adenovirus (Ad-RTS-hIL-12) plus veledimex as a gene delivery system to conditionally produce IL-12, a potent, naturally occurring anti-cancer protein, to treat patients with solid tumors where a specific target is unknown, including brain cancer. Our Controlled IL-12 platform allows us to deliver IL-12 in a tunable dose, which is critical for this potent cytokine. In a phase 1 clinical trial of patients with recurrent glioblastoma multiforme, or rGBM, a subset of patients (n=6) who received low-dose steroids along with 20 mg of veledimex plus Ad-RTS-hIL-12, achieved 17.8 months median overall survival, or OS, compared with five to eight months OS established in historical controls. Thirty-six additional patients with rGBM have been recruited into a sub study designed to encourage use of low-dose steroids and 20 mg veledimex to further understand the potential of Controlled IL-12 as a monotherapy. We are also developing our Controlled IL-12 platform in combination with immune checkpoint inhibitors. We are currently enrolling patients with rGBM to receive Ad-RTS-hIL-12 plus veledimex in combination with OPDIVO^® (nivolumab) in a phase 1 dose-escalation trial. In November 2018, we announced a clinical supply agreement with Regeneron Pharmaceuticals, Inc., or Regeneron, to evaluate Ad-RTS-hIL-12 plus veledimex in combination with Regeneron’s PD-1antibody Libtayo^® (cemiplimab-rwlc) for the treatment of patients with rGBM.

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As of June 30, 2019, we had cash and cash equivalents of approximately $43.6 million. Given our current development plans, along with the $45.0 million in gross proceeds from the July 2019 private placement, we expect that our existing cash and cash equivalents will be sufficient to fund our current operations into the first half of 2021. We currently do not have any committed sources of additional capital at this time. The forecast of cash resources is forward-looking information that involves risks and uncertainties, and the actual amount of our expenses could vary materially and adversely as a result of a number of factors. We have based our estimates on assumptions that may prove to be wrong, and our expenses could prove to be significantly higher than currently anticipated. Management does not know whether additional financing will be available on terms favorable or acceptable to us when needed, if at all. If adequate additional funds are not available when required, or if we our unsuccessful in entering into partnership agreements for further development of its products, management may need to curtail development efforts.

We have not generated significant revenue and have incurred significant net losses in each year since our inception. For the six months ended June 30, 2019, we had a net loss of $28.1 million, and, as of June 30, 2019, we have incurred approximately $594.4 million of accumulated deficit since our inception in 2003. We expect to continue to incur significant operating expenditures and net losses. Further development of our product candidates will likely require substantial increases in our expenses as we:

We continue to seek additional financial resources to fund the further development of our product candidates. If we are unable to obtain sufficient additional capital, one or more of these programs could be delayed, and we may be unable to continue our operations at planned levels and be forced to reduce our operations. Because of the numerous risks and uncertainties associated with product development, we are unable to predict the timing or amount of increased expenses or when or if we will be able to achieve or maintain profitability.

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Recent Developments

Organizational Updates

Clinical and Regulatory Developments

Business Developments

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Financial Overview

Overview of Results of Operations

Three and Six Months Ended June 30, 2019 Compared to Three and Six Months ended June 30, 2018

Revenue. Revenue during the three and six months ended June 30, 2019 and 2018 was as follows:

We recognized previously deferred revenue from our License and Collaboration Agreement among us, Precigen and Ares Trading S.A., or the Ares Trading Agreement, amounting to $0.1 million for the six months ended June 30, 2018 under ASC 605. During the three months ended June 30, 2019 and 2018, we did not recognize any revenue as we did not have any outstanding contract liability under ASC 606.

Research and development expenses. Research and development expenses during the three and six months ended June 30, 2019 and 2018 were as follows:

Research and development expenses for the three months ended June 30, 2019 increased by $2.5 million when compared to the three months ended June 30, 2018. During the three months ended June 30, 2019, our research and development costs increased by $3.2 million as a result of payments under our patent license agreement with the NCI and increased nonclinical research and development to support our cell therapy programs. These increases were offset by decreases of approximately $0.1 million related to gene therapy programs and $0.6 million related to stock compensation, contracted outside services, and other employee related expenses during the three months ended June 30, 2019.

Research and development expenses for the six months ended June 30, 2019 increased by $1.8 million when compared to the six months ended June 30, 2018. During the six months ended June 30, 2019, our research and development costs increased by $1.5 million as a result of a milestone payment after our entry into a patent license with the NCI in May 2019 $0.9 million for increased manufacturing and nonclinical research and development costs to support our cell therapy programs, and $1.3 million for increased manufacturing and clinical research and development costs to support our gene therapy programs. These increases were offset by a decrease of approximately $1.5 million related to activities associated with our CD33-specific CAR⁺ program, which has been transferred to Precigen under the terms of the License Agreement. Additionally, the increased costs associated with our research and development efforts were offset by a decrease of approximately $0.4 million related to stock compensation, contracted outside services, and other employee related expenses during the three months ended June 30, 2019.

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Our research and development expense consists primarily of salaries and related expenses for personnel, costs of contract manufacturing services, costs of facilities and equipment, fees paid to professional service providers in conjunction with our clinical trials, fees paid to contract research organizations in conjunction with preclinical animal studies, costs of materials used in research and development, consulting, license and milestone payments and sponsored research fees paid to third parties.

We have not accumulated and tracked our internal historical research and development costs or our personnel and personnel-related costs on a program-by-program basis. Our employee and infrastructure resources are allocated across several projects, and many of our costs are directed to broadly applicable research endeavors. As a result, we cannot state the costs incurred for each of our oncology programs on a program-by-program basis.

For the six months ended June 30, 2019, our clinical stage projects included a phase 1 clinical trial with Ad-RTS-IL-12 plus veledimex in progressive glioblastoma; an investigator-led phase 1 clinical trial infusing our 2nd generation CD19-specific CAR⁺ T cells in patients with advanced lymphoid malignancies; and a phase 1 clinical trial of Ad-RTS-hIL-12 with veledimex for the treatment of pediatric brain tumors. The expenses incurred by us to third parties for our phase 1 clinical trial with Ad-RTS-IL-12 plus veledimex in progressive glioblastoma were $0.6 million for the six months ended June 30, 2019, and $7.4 million from the project’s inception in June 2015 through June 30, 2019. The expenses incurred by us to third parties for our investigator-led phase 1 clinical trial infusing our 2nd generation CD19-specific CAR⁺ T cells in patients with advanced lymphoid malignancies were $0.6 million for the six months ended June 30, 2019 and $5.3 million from the project’s inception in December 2015 through June 30, 2019. The expenses incurred by us to third parties for our investigator-led phase 1 clinical trial of Ad-RTS-hIL-12 with veledimex for the treatment of pediatric brain tumors were $34 thousand for the six months ended June 30, 2019 and $1.5 million from the project’s inception in October 2017 through June 30, 2019.

Our future research and development expenses in support of our current and future programs will be subject to numerous uncertainties in timing and cost to completion. We test potential products in numerous preclinical studies for safety, toxicology and efficacy. We may conduct multiple clinical trials for each product. As we obtain results from trials, we may elect to discontinue or delay clinical trials for certain products to focus our resources on more promising products or indications. Completion of clinical trials may take several years or more, and the length of time generally varies substantially according to the type, complexity, novelty and intended use of a product. It is not unusual for preclinical and clinical development of each of these types of products to require the expenditure of substantial resources.

We estimate that clinical trials of the type generally needed to secure new drug approval are typically completed over the following timelines:

The duration and the cost of clinical trials may vary significantly over the life of a project as a result of differences arising during clinical development, including, among others, the following:

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As a result of the uncertainties discussed above, we are unable to determine the duration and completion costs of our programs or when and to what extent we will receive cash inflows from the commercialization and sale of a product. Our inability to complete our programs in a timely manner or our failure to enter into appropriate collaborative agreements could significantly increase our capital requirements and could adversely impact our liquidity. These uncertainties could force us to seek additional, external sources of financing from time-to-time in order to continue with our product development strategy. Our inability to raise additional capital, or to do so on terms reasonably acceptable to us, would jeopardize the future success of our business.

General and administrative expenses. General and administrative expenses during the three and six months ended June 30, 2019 and 2018 were as follows:

General and administrative expenses for the three months ended June 30, 2019 decreased by $0.1 million as compared to three months ended June 30, 2018. The decrease for the three months ended June 30, 2019 was primarily due to a decrease of $0.8 million for consulting and advisory services incurred during the three months ended June 30, 2019. These costs were offset by approximately $0.7 million in stock compensation and employee related expenses due stock option modifications for a departing officer and director

General and administrative expenses for the six months ended June 30, 2019 decreased by $2.1 million as compared to six months ended June 30, 2018. During the six months ended June 30, 2018, general and administrative expenses were higher than the six months ended June 30, 2019 due to $1.5 million of expenses related to stock option modifications for a departing officer and director and $0.8 million in costs related to consulting and advisory services. This $2.3 million increase in the prior year period was offset by a decrease of $0.2 million related to employee related and other expenses incurred during the six months ended June 30, 2019.

Other income (expense). Other income (expense) for the three and six months ended June 30, 2019 and 2018 were as follows:

During the three months ended June 30, 2019, we recorded $0.1 million in other income compared to $0.2 million during the three months ended June 30, 2018. The decrease is due to a decrease in interest earned on our cash accounts compared to the three months ended June 30, 2018. During the three months ended June 30, 2018, we recorded a gain on the change in fair value of the derivative liabilities of $0.2 million relating to our Series 1 preferred stock that was outstanding at the time. The Series 1 preferred stock was forfeited and returned to us in October 2018 and is no longer outstanding.

During the six months ended June 30, 2019, we recorded $0.3 million in other income compared to $0.3 million during the six months ended June 30, 2018. During the six months ended June 30, 2018, we recorded a gain on the change in fair value of the derivative liabilities of $11 thousand relating to our Series 1 preferred stock that was outstanding at the time. The Series 1 preferred stock was forfeited and returned to us in October 2018 and is no longer outstanding.

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Liquidity and Capital Resources

As of June 30, 2019, we have approximately $43.6 million of cash and cash equivalents. Given our development plans, along with the $45.0 million in gross proceeds from the July 2019 private placement, we anticipate our cash resources will be sufficient to fund our operations into the first half of 2021. We currently do not have any committed sources of additional capital at this time. The forecast of cash resources is forward-looking information that involves risks and uncertainties, and the actual amount of our expenses could vary materially and adversely as a result of a number of factors. We have based our estimates on assumptions that may prove to be wrong, and our expenses could prove to be significantly higher than we currently anticipate. Management does not know whether additional financing will be on terms favorable or acceptable to us when needed, if at all. If adequate additional funds are not available when required, or if we are unsuccessful in entering into partnership agreements for further development of our products, management may need to curtail development efforts.

In addition to these factors, our actual cash requirements may vary materially from our current expectations due to a number of other factors that may include, but are not limited to, changes in the focus and direction of our development programs, competitive and technical advances, costs associated with the development of our product candidates, our ability to secure partnering arrangements, and the costs of filing, prosecuting, defending and enforcing our intellectual property rights. If we exhaust our capital reserves more quickly than anticipated, regardless of the reason, and we are unable to obtain additional financing on terms acceptable to us or at all, we will be unable to proceed with development of some or all of our product candidates on expected timelines and will be forced to prioritize among them.

In June 2019, we entered into an “at-the-market”, or ATM, open market sale agreement with Jefferies LLC, or Jefferies, acting as sale agent with an aggregate offering value of up to $100.0 million which allows us to sell shares of our common stock through the facilities of the Nasdaq Capital Market. Subject to the terms of the open market sale agreement, we are able to determine, at our sole discretion, the timing and number of shares to be sold under this ATM facility. The compensation to Jefferies for sales of our common stock pursuant to the open market sale agreement will be an amount equal to 3% of the gross proceeds of any shares of common stock sold under the agreement. No shares of common stock have been issued to date under our ATM open market sale agreement.

Subsequent to June 30, 2019 and prior to the filing of this Quarterly Report on Form 10-Q, we entered into a securities issuance agreement with certain institutional and accredited investors who are also holders of warrants to purchase our common stock that were issued in November 2018, pursuant to which (i) the investors agreed to exercise their existing warrants for an aggregate of 15,015,152 shares of common stock, at an exercise price of $3.01 per share and (ii) we agreed to issue to the investors new warrants to purchase 15,015,152 additional shares of our common stock, at an exercise price of $7.00 per share, for gross proceeds to us of approximately $45.0 million.

We will need additional financing to support our long-term plans for clinical trials and new product development. We expect to finance our cash needs through the sale of equity securities, strategic collaborations and/or debt financings, or through other sources that may be dilutive to existing stockholders. There can be no assurance that we will be able to obtain funding from any of these sources or, if obtained, what the terms of such funding(s) may be, or that any amount that we are able to obtain will be adequate to support our working capital requirements until we achieve profitable operations. We have no current committed sources of additional capital. Recently, capital markets have experienced a period of instability that may severely hinder our ability to raise capital within the time periods needed or on terms we consider acceptable, if at all. If we are unable to raise additional funds when needed, we may not be able to continue development and regulatory approval of our products, or we could be required to delay, scale back or eliminate some or all our research and development programs.

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The following table summarizes our net decrease in cash, cash equivalents, and restricted cash for the six months ended June 30, 2019 and 2018:

Cash flows from operating activities represent the cash receipts and disbursements related to all of our activities other than investing and financing activities. Operating cash flow is derived by adjusting our net loss for:

Net cash used in operating activities for the six months ended June 30, 2019 was $18.3 million, as compared to net cash used in operating activities of $29.1 million for the six months ended June 30, 2018. The net cash used in operating activities for the six months ended June 30, 2019 was primarily due to our net loss of $28.1 million, offset by the change in prepaid and other assets of $4.5 million primarily related to the use of our long term and short term funds at MD Anderson, a change in non-cash stock-based compensation and depreciation of $4.6 million, and changes in accrued expenses and other liabilities of $1.8 million. The net cash used in operating activities for the six months ended June 30, 2018 was primarily due to our net loss of $28.1 million, offset by the change in prepaid expenses of $8.4 million, and change in accrued expenses and other liabilities of $5.3 million.

Net cash used in investing activities was $77 thousand for the six months ended June 30, 2019 compared to $0.4 million for the six months ended June 30, 2018. The change was due to a decrease during the six months ended June 30, 2019 in expenses related to the purchase of offsite equipment to support our programs at MD Anderson.

Net cash provided by financing activities for the six months ended June 30, 2019 was $0.2 million due to cash received for stock option exercises during the three months ended June 30, 2019. The $1.0 million used in financing activities is primarily attributable to restricted stock to cover taxes on stock exercises during the six months ended June 30, 2018.

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Operating capital and capital expenditure requirements

We anticipate that losses will continue for the foreseeable future. At June 30, 2019, our accumulated deficit was approximately $594.4 million. Our actual cash requirements may vary materially from those planned because of a number of factors, including:

Working capital as of June 30, 2019 was $56.5 million, consisting of $65.9 million in current assets and $9.4 million in current liabilities. Working capital as of December 31, 2018 was $74.8 million, consisting of $84.3 million in current assets and $9.5 million in current liabilities.    

Contractual obligations

The following table summarizes our outstanding obligations as of June 30, 2019 and the effect those obligations are expected to have on our liquidity and cash flows in future periods:

Our commitments for operating leases relate to the lease for our corporate headquarters in Boston and office space in Houston. On December 21, 2015 and April 15, 2016, we renewed the sublease for our corporate headquarters in Boston through August 31, 2021. On January 30, 2018, we entered into a lease agreement for office space in Houston at MD Anderson through April 15, 2021. On March 12, 2019 we entered into a lease agreement for office space in Houston through April 2021.

On January 10, 2017, we announced the signing of a CRADA with the NCI for the development of ACT-based immunotherapies genetically modified using the Sleeping Beauty transposon/transposase system for the treatment of solid tumors. In February 2019, we extended the CRADA with the NCI for two years, committing an additional $5.0 million to this program. Our respective obligations for the CRADA is reflected above with $2.5 million in the column “Less than 1 Year”, and $3.8 million in the column “2-3 Years”.

On October 5, 2018, we entered into an exclusive license agreement with Precigen. Under the license agreement, we are obligated to pay Precigen an annual licensing fees of $0.1 million, which we expect to be paid through the term of the agreement.

On May 28, 2019, we entered into the patent license agreement, or the Patent License, with the NCI. Pursuant to the terms of the Patent License, we are required to pay an aggregate amount of $1.5 million to the NCI, with a $0.5 million payment due within sixty days of the execution date of the Patent License and additional $0.5 million payments due on the six- and twelve-month anniversaries of the Patent License. The terms of the Patent License also require we pay the NCI minimum annual royalties in the amount of $0.3 million, which amount will be reduced to $0.1 million once the aggregate minimum annual royalties paid by us equals $1.5 million. The first minimum annual royalty payment is payable on the date that is eighteen months following the date of the Patent License. Our respective obligations for the CRADA is reflected above with $1.5 million in the column “Less than 1 year”, $0.8 million in the column “2-3 years”, $0.5 million in the column “4-5 years”, and $0.5 million in the “More than 5 years” column.

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Off-balance sheet arrangements

During the six months ended June 30, 2019 and the year ended December 31, 2018, we did not engage in any off-balance sheet arrangements.

Critical Accounting Policies and Estimates

In our Annual Report on Form 10-K for the fiscal year ended December 31, 2018, our most critical accounting policies and estimates upon which our financial status depends were identified as those relating to clinical trial expenses; collaboration agreements; fair value measurements for stock-based compensation; and income taxes. We reviewed our policies and determined that those policies remain our most critical accounting policies for the six months ended June 30, 2019. See Note 3, Summary of Significant Accounting Policies for a discussion of our adoption of ASC 606 relating to revenue recognition and Note 9 relating to our adoption of ASC 842, “Leases”.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

Our exposure to market risk is limited to our cash. The goals of our investment policy are preservation of capital, fulfillment of liquidity needs and fiduciary control of cash. We also seek to maximize income from our investments without assuming significant risk. To achieve our goals, we maintain our cash in interest-bearing bank accounts in global banks, United States treasuries and other government-backed investments, which are subject to minimal interest rate risk.

Effect of Currency Exchange Rates and Exchange Rate Risk Management

We currently have no studies outside of the United States. Therefore, any currency fluctuations will not have a material impact on our financial position, results of operations or cash flows.

Item 4. Controls and Procedures

Our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) or 15d-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act) as of the end of the period covered by this report. Based on such evaluation, our principal executive officer and principal financial officer have concluded that, as of the end of such period, our disclosure controls and procedures were effective in ensuring that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported, on a timely basis, and is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure.

There were no changes in our internal control over financial reporting during the quarter ended June 30, 2019 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. We implemented internal controls to ensure we adequately evaluated and accounted for our lease recognition under the new accounting standard. There were no significant changes to our internal control over financial reporting due to the adoption of the new standard.

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Part II - Other Information

Item 1. Legal Proceedings

In the ordinary course of business, we may periodically become subject to legal proceedings and claims arising in connection with ongoing business activities from time to time. The results of litigation and claims cannot be predicted with certainty, and unfavorable resolutions are possible and could materially affect our results of operations, cash flows or financial position. In addition, regardless of the outcome, litigation could have an adverse impact on us because of defense costs, diversion of management attention and resources and other factors.

As of June 30, 2019, based on information readily available, there are no matters that, in the opinion of management, are likely to result in a material adverse effect on our financial position, results of operations or cash flows.

Item 1A. Risk Factors

The following important factors could cause our actual business and financial results to differ materially from those contained in forward-looking statements made in this Quarterly Report on Form 10-Q or elsewhere by management from time to time. The risk factors in this Quarterly Report have been revised to incorporate changes to our risk factors from those included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2018. The risk factors set forth below with an asterisk (*) next to the title are new risk factors or risk factors containing changes, which may be material, from the risk factors previously disclosed in Item 1A of our Annual Report on Form 10-K for the fiscal year ended December 31, 2018, as filed with the Securities and Exchange Commission.

RISKS RELATED TO OUR BUSINESS

*We will require substantial additional financial resources to continue ongoing development of our product candidates and pursue our business objectives; if we are unable to obtain these additional resources when needed, we may be forced to delay or discontinue our planned operations, including clinical testing of our product candidates.

We have not generated significant revenue and have incurred significant net losses in each year since our inception. For the six months ended June 30, 2019, we had a net loss of $28.1 million, and, as of June 30, 2019, we have incurred approximately $594.4 million of accumulated deficit since our inception in 2003. We expect to continue to incur significant operating expenditures and net losses. Further development of our product candidates will likely require substantial increases in our expenses as we:

We continue to seek additional financial resources to fund the further development of our product candidates. If we are unable to obtain sufficient additional capital, one or more of these programs could be placed on hold.

As of June 30, 2019, we have approximately $43.6 million of cash and cash equivalents. Given our current development plans, along with the $45.0 million in gross proceeds from the July 2019 private placement, we anticipate cash resources will be sufficient to fund our operations into the first half of 2021. We currently do not have any committed sources of additional capital at this time. The forecast of cash resources is forward-looking information that involves risks and uncertainties, and the actual amount of our expenses could vary materially and adversely as a result of a number of factors. We have based our estimates on assumptions that may prove to be wrong, and our expenses could prove to be significantly higher than we currently anticipate. Management does not know whether additional financing will be on terms favorable or acceptable to us when needed, if at all. If adequate additional funds are not available when required, or if we are unsuccessful in entering into partnership agreements for further development of our product candidates, management may need to curtail its development efforts and planned operations.

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*We need to raise additional capital to fund our operations. The manner in which we raise any additional funds may affect the value of your investment in our common stock.

Until such time, if ever, as we can generate substantial revenue, we may finance our cash needs through a combination of equity offerings, debt financings and license and collaboration agreements. As of June 30, 2019, we have incurred approximately $594.4 million of accumulated deficit and had approximately $43.6 million of cash and cash equivalents. Given our current development plans, along with the $45.0 million in gross proceeds from the July 2019 private placement, we anticipate that our current cash resources will be sufficient to fund our operations into the first half of 2021. However, changes may occur that would consume our existing capital prior to then, including expansion of the scope of, and/or slower than expected progress of, our research and development efforts and changes in governmental regulation. Actual costs may ultimately vary from our current expectations, which could materially impact our use of capital and our forecast of the period of time through which our financial resources will be adequate to support our operations.

In addition to the factors above, our actual cash requirements may vary materially from our current expectations for a number of other factors that may include, but are not limited to, changes in the focus and direction of our development programs, competitive and technical advances, costs associated with the development of our product candidates, our ability to secure partnering arrangements, and costs of filing, prosecuting, defending and enforcing our intellectual property rights. If we exhaust our capital reserves more quickly than anticipated, regardless of the reason, and we are unable to obtain additional financing on terms acceptable to us or at all, we will be unable to proceed with development of some or all of our product candidates on expected timelines and will be forced to prioritize among them.

The unpredictability of the capital markets may severely hinder our ability to raise capital within the time periods needed or on terms we consider acceptable, if at all. Moreover, if we fail to advance one or more of our current product candidates to later-stage clinical trials, successfully commercialize one or more of our product candidates, or acquire new product candidates for development, we may have difficulty attracting investors that might otherwise be a source of additional financing.

Our need for additional capital and limited capital resources may force us to accept financing terms that could be significantly dilutive to existing stockholders. To the extent that we raise additional capital by issuing equity securities, our stockholders may experience dilution. In addition, we may grant future investors rights superior to those of our existing stockholders. If we raise additional funds through collaborations and licensing arrangements, it may be necessary to relinquish some rights to our technologies, product candidates or products, or grant licenses on terms that are not favorable to us. If we raise additional funds by incurring debt, we could incur significant interest expense and become subject to covenants in the related transaction documentation that could affect the manner in which we conduct our business.

Our plans to develop and commercialize non-viral and viral adoptive cellular therapies based on engineered cytokines and CAR T-cell as well as TCR therapies can be considered as new approaches to cancer treatment, the successful development of which is subject to significant challenges.

We intend to employ technologies such as the technology licensed from MD Anderson pursuant to the MD Anderson License described above, and from Precigen, pursuant to the License Agreement, to pursue the development and commercialization of non-viral and viral adoptive cellular therapies based on cytokines, T-cells, CARs and TCRs, possibly under control of the RTS^® and other switch technologies targeting both hematologic and solid tumor malignancies. Because this is a new approach to cancer immunotherapy and cancer treatment generally, developing and commercializing product candidates subjects us to a number of challenges, including:

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We cannot assure you that we will be able to successfully address these challenges, which could prevent us from achieving our research, development and commercialization goals.

Our current product candidates are based on novel technologies and are supported by limited clinical data and we cannot assure you that our current and planned clinical trials will produce data that supports regulatory approval of one or more of these product candidates.

The immuno-oncology effector platform in which we have acquired rights pursuant to our License Agreement with Precigen represents early-stage technology in the field of human oncology biotherapeutics, with Ad-RTS-IL-12 plus veledimex having completed trials, in melanoma, breast cancer and rGBM. Similarly, our genetically modified and/or non-modified T-cell candidates are supported by limited clinical data, all of which has been generated through trials conducted by MD Anderson, not by us. We plan to assume control of the overall clinical and regulatory development of our T-cell product candidates, and any failure to obtain, or delays in obtaining, sponsorship of new INDs, or in filing INDs sponsored by us for these or any other product candidates we determine to advance could negatively affect the timing of our potential future clinical trials. Such an impact on timing could increase research and development costs and could delay or prevent obtaining regulatory approval for our product candidates, either of which could have a material adverse effect on our business.

Further, we did not control the design or conduct of the previous trials. It is possible that the FDA will not accept these previous trials as providing adequate support for future clinical trials, whether controlled by us or third parties, for any of one or more reasons, including the safety, purity, and potency of the product candidate, the degree of product characterization, elements of the design or execution of the previous trials or safety concerns, or other trial results. We may also be subject to liabilities arising from any treatment-related injuries or adverse effects in patients enrolled in these previous trials. As a result, we may be subject to unforeseen third-party claims and delays in our potential future clinical trials. We may also be required to repeat in whole or in part clinical trials previously conducted by MD Anderson or other entities, which will be expensive and delay the submission and licensure or other regulatory approvals with respect to any of our product candidates.

In addition, the results of the limited clinical trials conducted to date may not be replicated in future clinical trials. Our Ad-RTS-IL-12 plus veledimex and genetically modified and non-modified T-cell product candidates, as well as other product candidates, may fail to show the desired safety and efficacy in clinical development, and we cannot assure you that the results of any future trials will demonstrate the value and efficacy of our product candidates. Moreover, there are a number of regulatory requirements that we must satisfy before we can continue clinical trials of CAR⁺ T or other cellular therapy product candidates in the United States. Satisfaction of these requirements will entail substantial time, effort and financial resources. Any time, effort and financial resources we expend on our Ad-RTS-IL-12 plus veledimex and genetically modified and non-modified T-cell product candidates and other early-stage product candidate development programs may adversely affect our ability to continue development and commercialization of our immuno-oncology product candidates.

We report interim data on certain of our clinical trials and we cannot assure you that interim data will be predictive of either future interim results or final study results.

As part of our business, we provide updates related to the development of our product candidates, which may include updates related to interim clinical trial data. To date, our clinical trials have involved small patient populations and because of the small sample size, the interim results of these clinical trials may be subject to substantial variability and may not be indicative of either future interim results or final results.

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*We face substantial competition from other biopharmaceutical companies, which may result in others discovering, developing or commercializing products before, or more successfully than, we do.

The biopharmaceutical industry, and the rapidly evolving market for developing genetically engineered T-cells in particular, is characterized by intense competition and rapid innovation. The business of genetically engineering T-cells faces significant competition in the CAR and TCR technology space from multiple companies and their collaborators.

Two such companies, Novartis International AG (Kymriah^®) and Kite Pharma Inc./Gilead Sciences, Inc. (Yescarta^®), have now commercialized autologous CAR⁺ T cells against CD19. Additional companies developing autologous CAR⁺ T products include Juno Therapeutics Inc./Celgene Corporation, bluebird bio, Inc., in collaboration with Celgene Corporation, Nanjing Legend Biotech and Janssen Biotech, Inc., a subsidiary of Johnson & Johnson, Bellicum Pharmaceuticals, Inc., Autolus Therapeutics plc, Mustang Bio, Inc. and Marker Therapeutics, Inc. Several companies are pursuing the development of allogeneic CAR⁺ T therapies, including Allogene Therapeutics, Inc. (in collaboration with Pfizer Inc.), Atara Biotherapeutics, Inc. and Cellectis SA (in collaboration with Servier) which may also compete with our product candidates.

Our TCR program faces competition from companies targeting shared antigens, including from Adaptimmune Therapeutics plc in collaboration with GlaxoSmithKline plc, Kite Pharma Inc./Gilead Sciences, Inc., Tmunity Therapeutics Inc, Medigene AG, Tactiva Therapeutics, LLC, Takara Bio, Inc., TC Biopharm Ltd., TCR² Therapeutics Inc., Zelluna Immunotherapy AS, PACT Pharma, Inc., and others. Several companies, including Advaxis Inc./Amgen Inc., BioNTech AG, Neon Therapeutics Inc. and Gritstone Oncology, Inc., are pursuing vaccine platforms to target neoantigens for solid tumors.

We are initially developing our Controlled IL-12 platform for the treatment of rGBM. Companies that sell marketed drugs for rGBM are Genentech Inc. and Roche Holding AG with Avastin (bevacizumab), a vascular endothelial growth factor directed antibody indicated for the treatment of adults with rGBM. Arbor Pharmaceuticals Inc. markets GLIADEL Wafer, which is indicated in patients with newly diagnosed high-grade malignant glioma as an adjunct to surgery and radiation and is also indicated in patients with recurrent glioblastoma multiforme as an adjunct to surgery. Additionally, Novocure has developed Optune (tumor treating fields) for newly diagnosed and recurrent glioblastoma.

Several companies have product candidates in phase 3 development for the treatment of glioblastoma, including, but not limited to, Tocagen Inc., Vascular Biogenics Ltd., and DelMar Pharmaceuticals, Inc. Several companies and institutions have product candidates currently in phase 2 clinical trials, including, but not limited to, Abbvie Inc., DNAtrix Therapeutics, Istari Oncology, Karyopharm and MedImmune LLC/AstraZeneca plc.

Even if we obtain regulatory approval of potential products, we may not be the first to market and that may affect the price or demand for our potential products. Existing or future competing products may provide greater therapeutic convenience or clinical or other benefits for a specific indication than our products or may offer comparable performance at a lower cost. Additionally, the availability and price of our competitors’ products could limit the demand and the price we are able to charge for our potential products. We may not be able to implement our business plan if the acceptance of our potential products is inhibited by price competition or the reluctance of physicians to switch from existing methods of treatment to our potential products, or if physicians switch to other new drug or biologic products or choose to reserve our potential products. Additionally, a competitor could obtain orphan product exclusivity from the FDA with respect to such competitor’s product. If such competitor product is determined to be the same product as one of our potential products, that may prevent us from obtaining approval from the FDA for such potential products for the same indication for seven years, except in limited circumstances. If our products fail to capture and maintain market share, we may not achieve sufficient product revenues and our business will suffer.

We compete against fully integrated pharmaceutical companies and smaller companies that are collaborating with larger pharmaceutical companies, academic institutions, government agencies and other public and private research organizations. Many of these competitors have products already approved or in development. In addition, many of these competitors, either alone or together with their collaborative partners, operate larger research and development programs or have substantially greater financial resources than we do, as well as significantly greater experience in:

Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize products that are more effective, have fewer or less severe side effects, are more convenient or are less expensive than any products that we may develop. Our competitors also may obtain FDA or other regulatory approval for their products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the market. In addition, our ability to compete may be affected in many cases by insurers or other third-party payors seeking to encourage the use of generic products.

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* Any termination of our licenses with Precigen, MD Anderson or the National Cancer Institute could result in the loss of significant rights and could harm our ability to develop and commercialize our product candidates.

We are dependent on patents, know-how, and proprietary technology that are licensed from others, particularly MD Anderson, Precigen and the National Cancer Institute, or the NCI. Any termination of these licenses could result in the loss of significant rights and could harm our ability to commercialize our product candidates. Disputes may also arise between us and these licensors regarding intellectual property subject to a license agreement, including those relating to:

In addition, under our License Agreement, Precigen is obligated to provide certain transition services and transfer certain know-how to us. There is no guarantee that Precigen will perform these activities to our satisfaction, if at all. If Precigen fails to perform these activities our ability to pursue our clinical programs may be adversely affected.

If disputes over intellectual property that we have licensed prevent or impair our ability to maintain our current licensing arrangements, particularly with MD Anderson, Precigen and the NCI, on acceptable terms, we may be unable to successfully develop and commercialize the affected potential products. We are generally also subject to all of the same risks with respect to protection of intellectual property that we license as we are for intellectual property that we own. If we or our licensors fail to adequately protect this intellectual property, our ability to commercialize potential products under our applicable licenses could suffer. There is a substantial amount of litigation involving patents and other intellectual property rights in the biotechnology and pharmaceutical industries, as well as administrative proceedings for challenging patents, including interference, derivation, and reexamination proceedings before the United States Patent and Trademark Office, or USPTO, or oppositions and other comparable proceedings in foreign jurisdictions. Recently, due to changes in U.S. law referred to as patent reform, new procedures including inter partes review and post-grant review have been implemented, which adds uncertainty to the possibility of challenge to our or our licensors’ patents in the future.

Clinical trials are very expensive, time-consuming, and difficult to design, initiate and implement.

Human clinical trials are very expensive and difficult to design, initiate and implement, in part because they are subject to rigorous regulatory requirements. The clinical trial start-up and process itself is also time-consuming and results are inherently uncertain. We estimate that clinical trials of our product candidates will take at least several years to complete. Furthermore, failure can occur at any stage of the trials, and we could encounter problems that cause us to delay the start of, abandon or repeat clinical trials. The commencement and completion of clinical trials may be delayed by several factors, including:

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Success in preclinical testing and early clinical trials does not ensure that later clinical trials will be successful. In addition, we or the FDA may suspend our clinical trials at any time if it appears that we are exposing participants to unacceptable health risks or if the FDA finds deficiencies in our IND submission or in the conduct of these trials. In June 2018, we announced that the FDA placed our phase 1 trial on clinical hold to evaluate CD19-specific CAR-T therapies manufactured using our rapid personalized manufacturing technology and requested additional information in support of the IND submission for the trial. Our business may be materially harmed if we or our partners are unable to adequately address the FDA’s requests for this trial in a timely manner.

See also “Risks Related to the Clinical Testing, Regulatory Approval and Manufacturing of our Product Candidates—Our product candidates are in various stages of clinical trials, which are very expensive and time-consuming. We cannot be certain when we will be able to submit a BLA, to the FDA and any failure or delay in completing clinical trials for our product candidates could harm our business.”

We may not be able to commercialize any products, generate significant revenues, or attain profitability.

To date, none of our product candidates have been approved for commercial sale in any country. The process to develop, obtain regulatory approval for, and commercialize potential product candidates is long, complex, and costly. Unless and until we receive approval from the FDA and/or other foreign regulatory authorities for our product candidates, we cannot sell our products and will not have product revenues. Even if we obtain regulatory approval for one or more of our product candidates, if we are unable to successfully commercialize our products, we may not be able to generate sufficient revenues to achieve or maintain profitability, or to continue our business without raising significant additional capital, which may not be available. Our failure to achieve or maintain profitability could negatively impact the trading price of our common stock.

Ethical, legal and social concerns about synthetic biologically engineered products could limit or prevent the use of our product candidates.

Our product candidates use an immuno-oncology platform. Public perception about the safety and environmental hazards of, and ethical concerns over, genetically engineered products could influence public acceptance of our product candidates. If we and our collaborators are not able to overcome the ethical, legal and social concerns relating to biological engineering, our product candidates may not be accepted. These concerns could result in increased expenses, regulatory scrutiny, delays or other impediments to the public acceptance and commercialization of our product candidates. Our ability to develop and commercialize products could be limited by public attitudes and governmental regulation.

The subject of genetically modified organisms has received negative publicity, which has aroused public debate. This adverse publicity could lead to greater regulation and trade restrictions on the development and commercialization of genetically altered products. Further, there is a risk that our product candidates could cause adverse health effects or other AEs, which could also lead to negative publicity.

The biological platform that we use may have significantly enhanced characteristics compared to those found in naturally occurring organisms, enzymes or microbes. While we believe we produce biological technologies only for use in a controlled laboratory and industrial environment, the release of such biological technologies into uncontrolled environments could have unintended consequences. Any adverse effect resulting from such a release could have a material adverse effect on our business and financial condition, and we may have exposure to liability for any resulting harm.

We will incur additional expenses in connection with our License Agreement with Precigen.

We expect our overall research and development expenses will continue to increase as we move forward with our research and development efforts under the License Agreement with Precigen. Although all human clinical trials are expensive and difficult to design and implement, we believe that due to complexity, costs associated with clinical trials for immuno-oncology products are greater than the corresponding costs associated with clinical trials for small-molecule candidates. We now control many of the activities previously performed by Precigen on our behalf, including the manufacturing of our products in development. As a result, we expect to add increased headcount to support these efforts, among other expenses, which would add to our research and development expenses going forward.

Although our forecasts for expenses and the sufficiency of our capital resources take into account our plans to develop products under the License Agreement, the actual costs associated therewith may be significantly in excess of forecasted amounts. In addition to the amount and timing of expenses related to the clinical trials, our actual cash requirements may vary materially from our current expectations for a number of other factors that may include, but are not limited to, changes in the focus and direction of our development programs, competitive and technical advances, costs associated with the development of our product candidates and costs of filing, prosecuting, defending and enforcing our intellectual property rights. If we exhaust our capital reserves more quickly than anticipated, regardless of the reason, and we are unable to obtain additional financing on terms acceptable to us or at all, we will be unable to proceed with development of some or all of our product candidates on expected timelines and will be forced to prioritize among them.

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We may incur additional expenses in connection with our License Agreement with MD Anderson.

Pursuant to the MD Anderson License with MD Anderson, we, together with Precigen, obtained an exclusive, worldwide license to certain technologies owned and licensed by MD Anderson including technologies relating to novel CAR⁺ T cell and TCR cell therapies arising from the laboratory of Laurence Cooper, M.D., Ph.D., who was then at MD Anderson, as well as either co-exclusive or non-exclusive licenses under certain related technologies. Pursuant to the MD Anderson License, we, together with Precigen, entered into a research and development agreement with MD Anderson pursuant to which we agreed to provide funding for certain research and development activities of MD Anderson for a period of three years from the date of the MD Anderson License, in an amount between $15.0 and $20.0 million per year. We made the final payment in January 2018.

Although our forecasts for expenses and the sufficiency of our capital resources takes into account the funds available at MD Anderson, our actual cash requirements may vary materially from our current expectations for a number of other factors that may include, but are not limited to, changes in the focus and direction of our development programs, competitive and technical advances, costs associated with the development of our product candidates and costs of filing, prosecuting, defending and enforcing our intellectual property rights. If we exhaust the funds available at MD Anderson more quickly than anticipated, regardless of the reason, and we are unable to obtain additional financing on terms acceptable to us or at all, we will be unable to proceed with development of some or all of our product candidates on expected timelines and will be forced to prioritize among them.

We may not be able to retain the rights licensed to us and Precigen by MD Anderson to technologies relating to CAR, T-cell therapies and other related technologies.

Under the MD Anderson License, we, together with Precigen, received an exclusive, worldwide license to certain technologies owned and licensed by MD Anderson including technologies relating to novel CAR⁺ T cell and TCR cell therapies arising from the laboratory of Laurence Cooper, M.D., Ph.D., who was then at MD Anderson, as well as either co-exclusive or non-exclusive licenses under certain related technologies. When combined with Precigen’s technology suite and Ziopharm’s clinically tested RTS^® interleukin 12 modules, the resulting proprietary methods and technologies may help realize the promise of genetically modified CAR⁺ T cells and TCR therapies by controlling cell expansion and activation in the body, minimizing off-target and unwanted on-target effects and toxicity while maximizing therapeutic efficacy. The term of the MD Anderson License expires on the last to occur of (a) the expiration of all patents licensed thereunder, or (b) the twentieth anniversary of the date of the MD Anderson License; provided, however, that following the expiration of the term, we and Precigen shall then have a fully-paid up, royalty free, perpetual, irrevocable and sublicensable license to use the licensed intellectual property thereunder.

After 10 years from the date of the MD Anderson License and subject to a 90-day cure period, MD Anderson will have the right to convert the MD Anderson License into a non-exclusive license if we and Precigen are not using commercially reasonable efforts to commercialize the licensed intellectual property on a case-by-case basis. After five years from the date of the MD Anderson License and subject to a 180-day cure period, MD Anderson will have the right to terminate the MD Anderson License with respect to specific technology(ies) funded by the government or subject to a third-party contract if we and Precigen are not meeting the diligence requirements in such funding agreement or contract, as applicable. MD Anderson may also terminate the agreement with written notice upon material breach by us or Precigen, if such breach has not been cured within 60 days of receiving such notice. In addition, the MD Anderson License will terminate upon the occurrence of certain insolvency events for both us or Precigen and may be terminated by the mutual written agreement of us, Precigen and MD Anderson.

There can be no assurance that we will be able to successfully perform under the MD Anderson License and if the MD Anderson License is terminated it may prevent us from achieving our business objectives.

We have a limited operating history upon which to base an investment decision.

We have not demonstrated an ability to perform the functions necessary for the successful commercialization of any product candidates. The successful commercialization of any product candidates will require us to perform a variety of functions, including:

Our operations have been limited to organizing and staffing our company, acquiring, developing and securing our proprietary product candidates, and undertaking preclinical and clinical trials of our product candidates. These operations provide a limited basis for you to assess our ability to commercialize our product candidates and the advisability of investing in our securities.

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We may not be successful in establishing development and commercialization collaborations, which failure could adversely affect, and potentially prohibit, our ability to develop our product candidates.

Developing biopharmaceutical products and complementary technologies, conducting clinical trials, obtaining marketing approval, establishing manufacturing capabilities and marketing approved products is expensive and, therefore, we anticipate exploring collaborations with third parties that have alternative technologies, more resources and more experience than we do. In situations where we enter into a development and commercial collaboration arrangement for a product candidate or complementary technology, we may also seek to establish additional collaborations for development and commercialization in territories outside of those addressed by the first collaboration arrangement for such product candidate or technology. There are a limited number of potential partners, and we expect to face competition in seeking appropriate partners. If we are unable to enter into any development and commercial collaborations and/or sales and marketing arrangements on reasonable and acceptable terms, if at all, we may be unable to successfully develop and seek regulatory approval for our product candidates and/or effectively market and sell future approved products, if any, in some or all of the territories outside of the United States where it may otherwise be valuable to do so.

Because we currently do not have internal research capabilities, we are dependent upon pharmaceutical and biotechnology companies and academic and other researchers to sell or license us their product candidates and technology.

Proposing, negotiating, and implementing an economically viable product acquisition or license is a lengthy and complex process. We compete for partnering arrangements and license agreements with pharmaceutical, biopharmaceutical, and biotechnology companies, many of which have significantly more experience than we do and have significantly more financial resources. Our competitors may have stronger relationships with certain third parties including academic research institutions, with whom we are interested in collaborating and may have, therefore, a competitive advantage in entering into partnering arrangements with those third parties. We may not be able to acquire rights to additional product candidates or complementary technology on terms that we find acceptable, or at all.

We expect that any product candidate to which we acquire rights will require significant additional development and other efforts prior to commercial sale, including extensive clinical testing and approval by the FDA and applicable foreign regulatory authorities. All product candidates are subject to the risks of failure inherent in biopharmaceutical product development, including the possibility that the product candidate will not be shown to be sufficiently safe or effective for approval by regulatory authorities. Even if our product candidates are approved, they may not be economically manufactured or produced, or be successfully commercialized.

We actively evaluate complementary technologies to acquire or license. Such complementary technologies could significantly increase our capital requirements and place further strain on the time of our existing personnel, which may delay or otherwise adversely affect the development of our existing product candidates. We must manage our development efforts and clinical trials effectively, and hire, train and integrate additional management, administrative, and research and development personnel. We may not be able to accomplish these tasks, and our failure to accomplish any of them could prevent us from successfully growing.

We may not be able to successfully manage our growth.

In the future, if we are able to advance our product candidates to the point of, and thereafter through, clinical trials, we will need to expand our development, regulatory, manufacturing, marketing and sales capabilities or contract with third parties to provide for these capabilities. Any future growth will place a significant strain on our management and on our administrative, operational, and financial resources. Therefore, our future financial performance and our ability to commercialize our product candidates and to compete effectively will depend, in part, on our ability to manage any future growth effectively. To manage this growth, we must expand our facilities, augment our operational, financial and management systems, and hire and train additional qualified personnel. If we are unable to manage our growth effectively, our business may be harmed.

Our business will subject us to the risk of liability claims associated with the use of hazardous materials and chemicals.

Our contract research and development activities may involve the controlled use of hazardous materials and chemicals. Although we believe that our safety procedures for using, storing, handling and disposing of these materials comply with federal, state and local laws and regulations, we cannot completely eliminate the risk of accidental injury or contamination from these materials. In the event of such an accident, we could be held liable for any resulting damages and any liability could have a materially adverse effect on our business, financial condition, and results of operations. In addition, the federal, state and local laws and regulations governing the use, manufacture, storage, handling and disposal of hazardous or radioactive materials and waste products may require our contractors to incur substantial compliance costs that could materially adversely affect our business, financial condition, and results of operations.

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