On December 26, 2020, one of the Company’s subsidiaries, MSG, and Pfizer, entered into a collaboration and license agreement (the “Pfizer Collaboration and License Agreement”), pursuant to which the Company and Pfizer collaborate to jointly develop and commercialize relugolix in oncology and women’s health in the U.S. and Canada (the “Co-Promotion Territory”). In addition, Pfizer also received an option to acquire exclusive commercialization and development rights to relugolix in oncology outside the Co-Promotion Territory, excluding certain Asian countries (the “Pfizer Territory”). Pfizer notified the Company on October 22, 2021 of its decision to decline this option. On September 19, 2022, the Company and Pfizer entered into a letter agreement pursuant to which Pfizer’s rights in Canada with respect to relugolix in oncology under the Pfizer Collaboration and License Agreement were terminated. References to “Co-Promotion Territory” with respect to periods subsequent to September 19, 2022 exclude Canada with respect to relugolix in oncology. On December 5, 2022, the Company and Pfizer entered into a letter agreement to address certain terms regarding the co-promotion of MYFEMBREE in Canada in the event of regulatory approval.

In the U.S. Co-Promotion Territory, the Company and Pfizer equally share profits and certain expenses, including certain pre-launch inventory costs incurred by the Company prior to the effective date of the Pfizer Collaboration and License Agreement (the “Allowable Expenses”). The Company remains responsible for regulatory interactions and drug supply and continues to lead clinical development for MYFEMBREE in the women’s health indications, while development for ORGOVYX is shared equally among the parties.

In the U.S., the Company is the principal on all sales transactions with third parties and recognizes 100% of product sales to third parties as revenue from contracts with customers. The Company concluded that based on the principal versus agent guidance in ASC 606, in the U.S., it has primary responsibility for fulfilling customer orders, controls inventory before it is sold to third party customers, assumes the risk of inventory loss, and maintains discretion in establishing product price.

Pursuant to the terms of the Pfizer Collaboration and License Agreement, the Company received an upfront payment of $650.0 million in December 2020, of which $150.0 million was Pfizer’s advanced reimbursement for Pfizer’s share of Allowable Expenses (the “cost share advance”), and is eligible to receive up to $3.8 billion of milestone payments, including two regulatory milestones of $100.0 million upon each FDA approval for MYFEMBREE in uterine fibroids and endometriosis ($200.0 million in the aggregate), and tiered sales milestones of up to $3.5 billion upon reaching certain thresholds of annual net sales for oncology and the combined women’s health indications in the Co-Promotion Territory. In July 2021, the Company received the first $100.0 million regulatory milestone payment from Pfizer that was triggered upon the FDA approval of MYFEMBREE for the management of heavy menstrual bleeding associated with uterine fibroids on May 26, 2021. In September 2022, the Company received the second $100.0 million regulatory milestone payment from Pfizer that was triggered upon the FDA approval of MYFEMBREE for the management of moderate to severe pain associated with endometriosis on August 5, 2022.

Pursuant to the terms of the Pfizer Collaboration and License Agreement, the Company was required to bear Pfizer’s share of Allowable Expenses, up to a maximum of $100.0 million for calendar year 2021 and up to a maximum of $50.0 million for calendar year 2022. Any unused portion was to carry over into the subsequent calendar years until the Company had assumed in aggregate $150.0 million of Pfizer’s share of the Allowable Expenses. No amounts remained under the cost share advance from Pfizer as of December 31, 2022.

The term of the Pfizer Collaboration and License Agreement continues until no products are sold and all development activities have terminated in the Co-Promotion Territory. The Pfizer Collaboration and License Agreement may be terminated early by either party for the uncured material breach of the other party or for bankruptcy or other insolvency proceeding of the other party. In addition, Pfizer has certain other termination rights and may terminate the Pfizer Collaboration and License Agreement early upon providing written notice to the Company pursuant to the terms of the Pfizer Collaboration and License Agreement.

The Company assessed the Pfizer Collaboration and License Agreement and determined that it meets both criteria to be considered a collaborative agreement within the scope of ASC 808, Collaborative Arrangements: active participation by both parties and exposures to significant risks and rewards dependent on the commercial success of the activities. Although the Company is lead party and will perform many activities, both development and commercialization responsibilities are assigned between parties and both parties participate on joint steering and other committees overseeing the collaboration activities. Both

parties are exposed to significant risks and rewards based on the economic outcomes of the collaboration through cost sharing and profit (loss) sharing provisions. Net payments to/from Pfizer for Pfizer’s share of the net profits and Allowable Expenses will be disaggregated and presented in the Company’s consolidated statements of operations and comprehensive loss according to the nature of the expense (e.g., collaboration expense, R&D expenses, or SG&A expenses).

As discussed above, the Company received a $650.0 million upfront payment from Pfizer in December 2020, of which $150.0 million was Pfizer’s advanced reimbursement for Pfizer’s share of Allowable Expenses. The Company concluded that the prepayment by Pfizer of its share of Allowable Expenses represented a significant financing component since the Company received the cash flows at the outset of the arrangement, rather than over a two-year period. Accordingly, the Company reduced the amount of the advanced reimbursement by approximately $3.6 million, representing the implied financing costs, and recorded the discounted value of $146.4 million on the consolidated balance sheet as a deposit liability (cost share advance from Pfizer). The financing component was accreted to interest expense utilizing a method that approximated the effective yield method over the period in which the cost share advance was expected to be used. As of December 31, 2022, the financing component had been fully accreted to interest expense. The remainder of the upfront payment was recorded as deferred revenue and has been and will continue to be recognized as Pfizer collaboration revenue on a straight-line basis over the estimated term of the agreement of six years, which was estimated by the Company based upon the terms of the Pfizer Collaboration and License Agreement, including the termination provisions contained therein. The Company determined straight-line amortization to be appropriate because the upfront payment represents payment for Pfizer’s right to participate in the collaboration activities, including both commercialization and development activities, which are expected to be realized evenly over this period.

The achievement of the regulatory milestones was outside of the Company’s control and therefore was not deemed probable at contract inception. Amounts associated with the regulatory milestones were not initially recognized. Upon achievement of the related regulatory milestones, cumulative catch-up revenue was recorded as Pfizer collaboration revenue in the period in which the respective regulatory milestone was achieved, and the remainder will be recognized over the remaining contract term. The Company determined that, conceptually, the regulatory milestone payments represent payment for development activities that will continue to benefit the collaboration as the products move toward commercialization. Accordingly, the recognition of revenue associated with the regulatory milestones follows the same amortization model as the upfront payment described above.

Similar to the regulatory milestones, sales-based milestone payments will not initially be recognized due to the uncertainty associated with the future commercial outcomes of ORGOVYX and MYFEMBREE. Upon achievement, the sales-based milestones will be recognized as revenue immediately in the period when the annual sales thresholds are met as the payments represent consideration for past activities that are completed and culminated in the annual sales thresholds being met.

The amount due to Pfizer as of December 31, 2022, was approximately $25.8 million and consisted of 26.8 million payable to Pfizer for Pfizer’s 50% share of net profits on sales of ORGOVYX and MYFEMBREE in the U.S., partially offset by approximately $1.0 million net amount due from Pfizer for reimbursement of Allowable Expenses. 100% of all expenses related to Pfizer under the Pfizer Collaboration and License Agreement are initially expensed and then the full pool of expenses incurred by both the Company and Pfizer are reduced through application of the cost sharing allowance. The amount due to Pfizer as of March 31, 2022 was approximately $32.6 million and consisted of $14.1 million payable to Pfizer for Pfizer’s 50% share of net profits on sales of ORGOVYX and MYFEMBREE in the U.S. and approximately $18.5 million for 50% of Pfizer’s reimbursement of Allowable Expenses.

On May 5, 2022, one of the Company’s subsidiaries, MSG, entered into an exclusive license agreement (the “Accord License Agreement”) with Accord and Intas Pharmaceuticals, Ltd., parent entity of Accord, for Accord to commercialize relugolix for the treatment of advanced hormone-sensitive prostate cancer under the trade name ORGOVYX® (relugolix 120 mg) in the European Economic Area, U.K., Switzerland, and Turkey (“Accord’s Territories”), with the right of first negotiation if the Company decides to enter into licensing arrangements in countries in the Middle East, Africa, and India. Under the terms of the Accord License Agreement, the Company received an upfront payment of $50.0 million in the three months ended June 30, 2022. As of December 31, 2022, the Company is also eligible to receive up to $85.5 million in commercial launch, sales-based, and other milestone payments, as well as tiered royalties from the high-teens to mid-twenties on net sales of ORGOVYX in Accord’s Territories.

Under the terms of the Accord License Agreement, the Company retains all rights to relugolix in the U.S. with its collaboration partner, Pfizer, as well as rights to relugolix in other therapeutic areas outside of prostate cancer, uterine fibroids, and endometriosis in Europe. The Company will continue to lead the global development of relugolix and may provide initial product supply to Accord, subject to the parties entering into a separate supply agreement. Accord will be responsible for certain local clinical development and all commercialization for its territories and has the option to manufacture relugolix in the future. In the event that Accord elects to exercise this option, the Company has agreed to assist Accord in transferring manufacturing technology from the Company’s CMOs to Accord to enable Accord to manufacture its own product supply.

The Company concluded that Accord represents a customer and evaluated the Accord License Agreement under ASC 606. Based on that evaluation, the Company identified a single performance obligation under the Accord License Agreement, consisting of the Company’s promise to grant Accord a license to certain of the Company’s intellectual property. The Company determined that the initial transaction price consisted solely of the non-refundable upfront payment of $50.0 million, which was recognized as Accord license and milestone revenue upon delivery of the license to Accord during the nine months ended December 31, 2022. Accord license and milestone revenue for the three and nine months ended December 31, 2022 also consists of the Company’s recognition of a $5.0 million milestone payment from Accord that was triggered upon Accord’s first commercial sale of ORGOVYX in Europe in October 2022. There was no Accord license and milestone revenue for the three and nine months ended December 31, 2021.

The remaining forms of consideration are variable because they are dependent on the achievement of sales-based or other milestones. The Company evaluated the constraint on variable consideration and concluded that the milestone payments are dependent on regulatory approvals and actions of third parties, and thus are highly susceptible to factors outside the Company’s influence. Therefore, at contract inception, the milestones are not included in the transaction price as it is not probable that a significant reversal of revenue would not occur. Furthermore, the sales-based milestones will be recognized as revenue immediately in the period when the related sales threshold is met. All other milestones will be recognized as revenue immediately in the period the underlying milestone is achieved. Any consideration related to sales-based royalties will be recognized when the related sales occur.

On March 30, 2020, one of the Company’s subsidiaries, MSG, entered into an exclusive license agreement with Richter for Richter to commercialize relugolix combination tablet for uterine fibroids and endometriosis in Europe, the Commonwealth of Independent States including Russia, Latin America, Australia, and New Zealand (the “Richter Development and Commercialization Agreement”). Under the terms of the Richter Development and Commercialization Agreement, the Company received an upfront payment of $40.0 million on March 31, 2020, is eligible to receive up to $40.0 million in regulatory milestone payments (of which $29.3 million has been received), $107.5 million in sales-related milestones, and tiered royalties on net sales following regulatory approval.

The Company determined that the transaction price under the Richter Development and Commercialization Agreement totaled $50.0 million, consisting of the upfront payment of $40.0 million received on March 31, 2020 and a $10.0 million regulatory milestone payment received in April 2020. No other regulatory milestones, sales-related milestones, or royalties on net sales following regulatory approval were included in the transaction price given the substantial uncertainty related to their achievement. The Company concluded that Richter represented a customer and applied relevant guidance from ASC 606, Revenue from Contracts with Customers. The Company identified one material combined performance obligation to grant a license to Richter to certain of its intellectual property and to deliver certain clinical and regulatory data packages for relugolix combination tablet, the drug used for both potential indications of uterine fibroids and endometriosis. The Company determined that its grant of a license to Richter to certain of its intellectual property was not distinct from the delivery of certain clinical and regulatory data packages pertaining to relugolix combination tablet. In evaluating the appropriate measure for the Company’s performance under the combined performance obligation, the Company determined that revenues should be recognized as data packages are delivered to Richter based on the relative value of the data packages delivered to date compared to the totality of the data packages it is obligated to deliver under the Richter Development and Commercialization Agreement. The Company evaluated the measure of progress each reporting period and, if necessary, adjusted the measure of performance and related revenue recognition. Based upon the Company’s assessment of its progress toward delivering relugolix combination tablet clinical and regulatory data packages to Richter, the Company recognized the remaining $16.7 million of the transaction price as Richter license and milestone revenue upon the completion of the Company’s delivery of the remaining substantive relugolix combination tablet data packages to Richter during the nine months ended December 31, 2021.

Richter license and milestone revenue for the three and nine months ended December 31, 2022 consists of the Company’s recognition of a $4.0 million regulatory milestone payment from Richter that was triggered upon the EMA acceptance of Richter’s Type II variation submission for RYEQO for the treatment of moderate to severe pain associated with endometriosis in adult women of reproductive age with a history of previous medical or surgical treatment for their endometriosis. Richter license and milestone revenue for the nine months ended December 31, 2022 also includes the Company’s recognition of a $0.3 million regulatory milestone payment that was triggered upon the approval of RYEQO for the uterine fibroids indication in Australia. On July 16, 2021, the EC approved RYEQO as the first and only long-term, once-daily oral treatment in Europe for moderate to severe symptoms of uterine fibroids in adult women of reproductive age. This approval triggered a $15.0 million regulatory milestone payment from Richter, which the Company recorded as Richter license and milestone revenue during the nine months ended December 31, 2021.

Under the terms of the Richter Development and Commercialization Agreement, the Company continues to lead global development of relugolix combination tablet. The Company also agreed to assist Richter in transferring manufacturing technology from the Company’s CMOs to Richter to enable Richter to manufacture relugolix combination tablet. The Company agreed to supply Richter with quantities of relugolix combination tablet for its territories pursuant to the Company’s agreements with its CMOs. Richter is responsible for local clinical development, manufacturing, and all commercialization activities for its territories. The Company has also granted Richter an option to collaborate with the Company on relugolix combination tablet for future indications in women’s health other than fertility.

The term of the Richter Development and Commercialization Agreement shall expire on a country-by-country basis upon expiry of the Royalty Term (as defined in the Richter Development and Commercialization Agreement) for the respective product in a country in Richter’s Territory. The Richter Development and Commercialization Agreement may be terminated in its entirety or on a country-by-country basis by mutual consent of the parties, or by either party for the uncured material breach of the other party, for bankruptcy of the other party, and for certain other reasons in accordance with the terms of the Richter Development and Commercialization Agreement.

During the nine months ended December 31, 2022, the cost share advance from Pfizer decreased by $33.8 million. The decrease was the net result of the application of 100% of shared Allowable Expenses incurred by the Company and 50% of reimbursement of Allowable Expenses incurred by Pfizer of approximately $34.4 million, partially offset by accretion of the implied financing component of $0.6 million. No amounts remained outstanding under the cost share advance from Pfizer as of December 31, 2022. See Note 8(A) for additional information about the cost share advance from Pfizer.