NOTE 3 — RESEARCH AND DEVELOPMENT AGREEMENTS

Disaggregated Research and Development Revenue

Research and development revenue is attributable to regions based on the location of each of the Company’s collaboration partner's parent company headquarters. Research and development revenues disaggregated by location were as follows (in thousands):

Collaboration Agreements - Takeda

Research and development revenue from a previously related party was with Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited (“Takeda”) and were as follows (in thousands):

Takeda Development and License Agreement

In September 2018, the Company entered into a Development Collaboration and Exclusive License Agreement, as amended, with Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited (“Takeda”), for the development and commercialization of products incorporating or comprised of one or more CD38 SLT-A fusion proteins (“Licensed Products”) for the treatment of patients with diseases such as multiple myeloma (the “Takeda Development and License Agreement”). In April 2021, the Company received a notice of termination from Takeda for the Takeda Development and License Agreement. Following receipt of the termination notice from Takeda, the Company notified Takeda of its intent to assume full rights to TAK-169, now known as MT-0169, a second-generation ETB targeting CD38, by entering into an agreement for such rights pursuant to the termination provisions of the Takeda Development and License Agreement. The termination of the Takeda Development and License Agreement was effective in August 2021.

As of the same date, the Company assumed full rights to MT-0169, including full control of MT-0169 clinical development, per the terms of the terminated Takeda Development and License Agreement. Following the transfer of the full MT-0169 rights to the Company, the Company may owe low-single digit royalties on future net sales of MT-0169 to Takeda as well as to certain third-party licensors. The Company may also owe certain third-party licensors potential aggregate clinical and regulatory milestone payments of up to $22.25 million.

The Company recognized revenue using a cost-based input measure. In applying the cost-based input method of revenue recognition, the Company used actual costs incurred relative to budgeted costs expected to be incurred for the combined performance obligation. These costs consist primarily of internal employee efforts and third-party contract costs. Revenue was recognized based on actual costs incurred as a percentage of total budgeted costs as the Company completes its performance obligation over the estimated service period.

Takeda Multi-Target Agreement

In June 2017, the Company entered into a Multi-Target Collaboration and License Agreement with Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda (the “Takeda Multi-Target Agreement”), in which the Company agreed to collaborate with Takeda to identify and generate ETBs, against two targets designated by Takeda. In March 2022, following the Company’s request to

bring the agreement to an end, the Company and Takeda mutually agreed to terminate the Takeda Multi-Target Agreement. As a result of the termination, the Company regained full rights to pursue the targets worked on under the Takeda Multi-Target Agreement. There are no ongoing activities or economic obligations in connection with the Takeda Multi-Target Agreement.

At June 30, 2022 there was no deferred revenue related to the performance obligation and at December 31, 2021, deferred revenue was $2.6 million, and the remaining unrecognized transaction price of $2.6 million was recognized as research and development revenue in the first quarter of 2022.

Vertex Collaboration Agreement

In November 2019, the Company entered into a Master Collaboration Agreement (the “Vertex Collaboration Agreement”) with Vertex Pharmaceuticals Incorporated (“Vertex”), to perform strategic research leveraging the Company’s engineered toxin body (“ETB”) technology platform to discover and develop novel targeted biologic therapies for applications outside of oncology. In October 2021, the Company received a notice of termination from Vertex for the Vertex Collaboration Agreement. The termination of the Vertex Collaboration Agreement was effective in October 2021. There are no ongoing activities or economic obligations in connection with the Vertex Collaboration Agreement.

With the termination of the agreement, the Company’s performance obligations under the Vertex Collaboration Agreement were completed in the fourth quarter of 2021 and the remaining unrecognized transaction price of $14.6 million was recognized as research and development revenue in the fourth quarter of 2021.

Bristol Myers Squibb Collaboration Agreement

In February 2021, the Company, entered into a Collaboration Agreement (the “BMS Collaboration Agreement”), as amended, with Bristol Myers Squibb Company (“Bristol Myers Squibb”) to perform strategic research collaboration leveraging the Company’s ETB technology platform to discover and develop novel products containing ETBs directed to multiple targets.

Pursuant to the terms of the BMS Collaboration Agreement, the Company granted Bristol Myers Squibb a series of exclusive options to obtain one or more exclusive licenses under the Company’s intellectual property to exploit products containing ETBs directed against certain targets designated by Bristol Myers Squibb.

Bristol Myers Squibb paid the Company an upfront payment of $70.0 million. In addition to the upfront payment, the Company may receive near term and development and regulatory milestone payments of up to $874.5 million. The Company will also be eligible to receive up to an additional $450.0 million in payments upon the achievement of certain sales milestones, and subject to certain reductions, tiered royalties ranging from mid-single digits up to mid-teens as percentages of calendar year net sales, if any, on any licensed product.

The Company will be responsible for conducting the research activities through the designation, if any, of one or more development candidates. Upon the exercise of its option for a development candidate, Bristol Myers Squibb will be responsible for all development, manufacturing, regulatory and commercialization activities with respect to that development candidate.

Unless earlier terminated, the BMS Collaboration Agreement will expire (i) on a country-by-country basis and licensed product-by-licensed product basis, on the date of expiration of the royalty payment obligations under the BMS Collaboration Agreement with respect to such licensed product in such country and (ii) in its entirety upon the earlier of (a) the expiration of the royalty payment obligations under the BMS Collaboration Agreement with respect to all licensed products in all countries or (b) upon Bristol Myers Squibb’s decision not to exercise any option on or prior to the applicable option deadlines. Bristol Myers Squibb has the right to terminate the BMS Collaboration Agreement for convenience upon prior written notice to the Company. Either party has the right to terminate the BMS Collaboration Agreement (a) for the insolvency of the other party or (b) subject to specified cure periods, in the event of the other party’s uncured material breach. The Company has the right upon prior written notice to terminate the BMS Collaboration Agreement in the event that Bristol Myers Squibb or any of its affiliates asserts a challenge against the Company’s patents.

The Company identified multiple performance obligations at the inception of the BMS Collaboration Agreement consisting of research and development services and material rights related to additional developmental targets. The transaction price of $70.0 million was allocated to the performance obligations based upon their relative stand-alone selling price and will be recognized over time as the underlying research and development services are performed.

The Company recognizes revenue for research and development services under the BMS Collaboration Agreement using a cost-based input measure. In applying the cost-based input method of revenue recognition, the Company will use actual costs incurred relative to budgeted costs expected to be incurred. These costs consist primarily of internal employee efforts and third-party contract

costs. Revenue is recognized based on actual costs incurred as a percentage of total budgeted costs as the Company completes its performance obligation over the estimated service period.

The Company had $32.7 million and $32.8 million of deferred revenue, current, at June 30, 2022 and December 31, 2021 respectively, related to the BMS Collaboration Agreement. The Company had $22.7 million and $30.7 million of deferred revenue, non-current at June 30, 2022 and December 31, 2021, respectively, related to the BMS Collaboration Agreement.

Grant Agreements

In September 2018, the Company entered into a Cancer Research Agreement (the “CD38 CPRIT Agreement”) with the Cancer Prevention and Research Institute of Texas (“CPRIT”) which was extended in April 2022, under which CPRIT awarded a $15.2 million product development grant to fund research of a cancer therapy involving a CD38 targeting ETB. Pursuant to the CD38 CPRIT Agreement, the Company may also use such funds to develop a replacement CD38 targeting ETB, with or without a partner.

During the six months ended June 30, 2022 and six months ended June 30, 2021, the Company recognized no grant revenue under this award. Qualified expenditures submitted for reimbursement in excess of amounts received are recorded as receivables in grant revenue receivable. At June 30, 2022 and December 31, 2021, the Company had no recorded grant revenue receivable.