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EXELIXIS INC

For the period ended Jan 3, 2025. Filed Feb 11, 2025.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 11, 2025

EXEL$69.57+1.3%Stored close · as of Nov 6, 2026

What changed in Management’s Discussion and Analysis?

Read the current filing

Previous report: 10-K

Period ended 2023-12-29; filed 2024-02-06.

0000939767-24-000028

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Current report: 10-K

Period ended 2025-01-03; filed 2025-02-11.

0000939767-25-000019

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.

Compared 171 previous paragraphs and 174 current paragraphs.

76 unchanged; 63 reworded; 30 added; 30 removed; 2 previous and 5 current paragraphs rearranged.

Tables are not compared: 10 previous and 13 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.

A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.

Added paragraphs (30)

Current report

The IRA introduced numerous substantial changes to drug pricing, reimbursement and access support in the U.S., including enabling the CMS to assert control over the prices of certain single-source drugs and biotherapeutics reimbursed under the Medicare Drug Price Negotiation Program. The IRA contains the limited small biotech exception. As of the date of this Annual Report on Form 10-K, CMS has informed us that we have qualified for the small biotech exception with respect to our cabozantinib franchise products through 2027 and we intend to apply to CMS to maintain the small biotech exception each year through 2030. Separately, in November 2023, CMS released final guidance on another program, the Part D Discount Program, which will require manufacturers to take on more of the beneficiary cost previously subsidized by the federal government through the application of increased drug discounts. We have since received notice from CMS that we qualify for the "specified small manufacturer” designation and are thereby eligible for a phase-in of the increased manufacturer discounts under the Part D Discount Program, from 2025 to 2031. We expect the increase in manufacturer discount will be 1% in 2025 and will further increase according to a schedule set by CMS until we are required to pay the full 20% discount paid by other manufacturers in 2031.

Current report

We are also pursuing other indications for cabozantinib that have the potential to increase the number of cancer patients who could potentially benefit from this medicine. In August 2023, we announced positive results from CABINET, a phase 3 pivotal study that evaluated cabozantinib versus placebo in patients with NET who experienced progression after prior systemic therapy in two independently powered cohorts: one for patients with advanced pNET and another for patients with advanced epNET. The trial was unblinded and stopped early due to the dramatic improvement in efficacy with respect to the primary endpoint of PFS observed at interim analysis. Data from CABINET demonstrated that cabozantinib substantially prolonged PFS as assessed by blinded independent central review in both pNET and epNET cohorts, and that the safety profile of cabozantinib observed in the trial was consistent with its known safety profile. In August 2024, we announced that the FDA had accepted our sNDA seeking approval for cabozantinib to treat adult patients with previously treated, locally advanced/unresectable or metastatic, well- or moderately differentiated pNET or epNET, granted standard review in the U.S., and assigned a PDUFA target action date of April 3, 2025. The FDA also granted orphan drug designation to cabozantinib for the treatment of pNET. Detailed final results from CABINET were presented during the NETs and Endocrine Tumours Proffered Paper Session at the ESMO 2024 and were concurrently published in NEJM. In November 2024, we announced that our sNDA would be discussed at an ODAC meeting in March 2025; however, in January 2025, we announced that the FDA had notified us that our sNDA would no longer be the subject of discussion at an ODAC. CABINET was conducted by the Alliance through our CRADA with the NCI-CTEP, which along with our investigator-sponsored trial program, provides an avenue for independent investigations of cabozantinib. The Alliance presented results from a subgroup analysis of patients in the epNET cohort with advanced gastrointestinal NET in CABINET at the ASCO GI 2025.

Current report

In August 2024, we announced the final analysis for the secondary endpoint of OS for COSMIC-313, a phase 3 pivotal trial evaluating the combination of cabozantinib, nivolumab and ipilimumab versus the combination of nivolumab and ipilimumab in patients with previously untreated advanced intermediate- or poor-risk RCC. At the final analysis, the experimental arm did not demonstrate an OS benefit over the control arm. Based on these results and the evolution of the first-line RCC treatment landscape since this study was initiated in May 2019, Exelixis will not pursue marketing authorization for COSMIC-313. Data from the final analysis of OS in COSMIC-313 will be presented at the ASCO GU 2025.

Current report

To further expand our exploration of the clinical potential of zanzalintinib, we entered into a clinical development collaboration with Merck to evaluate zanzalintinib in combination with KEYTRUDA® (pembrolizumab) in SCCHN and in combination with WELIREG® (belzutifan), Merck's oral HIF-2α inhibitor, in RCC. Under the collaboration, Merck will supply KEYTRUDA for our ongoing phase 3 STELLAR-305 trial in SCCHN. In addition, Merck will sponsor a phase 1/2 trial and two phase 3 pivotal trials in RCC; Merck will fund one of these phase 3 studies, and we will co-fund the phase 1/2 study and the other phase 3 study, as well as supply zanzalintinib and cabozantinib. We maintain all global commercial and marketing rights to zanzalintinib.

Current report

In August 2024, we announced that we will discontinue the development of XB002, our TF-targeting ADC, as part of our portfolio prioritization efforts. Based on available data, the compound is unlikely to improve upon tisotumab vedotin or other competitor TF-targeting ADCs currently in development. We plan to disclose data from the phase 1 JEWEL-101 study, evaluating XB002 in advance solid tumors, at a later date. We plan to reallocate resources to new pivotal trials with zanzalintinib, advancing XL309 and our growing pipeline.

Current report

The knowledge and experience gained through our efforts to discover cabozantinib, cobimetinib and esaxerenone, each of which were approved by regulatory authorities and are commercially distributed, informs our current strategy for discovering and developing additional small molecules with the potential to treat cancer:

Current report

•XL309 is a potentially best-in-class small molecule inhibitor of USP1, a synthetic lethal target in the context of BRCA-mutated tumors. It iscurrently being evaluated in a phase 1 clinical trial as monotherapy and in combination with PARP1/2 inhibition in patients with advanced solid tumors; enrollment is ongoing. XL309 has potential in patients whose tumors are no longer responsive to PARPi, including ovarian, breast and prostate cancers. XL309 also has potential in combination with PARPi agents to deepen and prolong the response seen to PARPi, as well as to broaden the activity beyond that observed in patients with tumors that harbor a BRCA1/2 mutation.

Current report

•In January 2024, we announced that our Board of Directors had authorized a corporate restructuring plan (the 2024 Restructuring Plan) to reduce our workforce and rebalance our cost structure in alignment with our strategic priorities, including reducing real estate commitments and costs, and terminating certain licensing partnerships. The 2024 Restructuring Plan was initiated in the first quarter of 2024, and substantially completed in the second quarter of 2024.

Current report

•On March 27, 2024, we received a notice letter from Cipla asserting additional Paragraph IV Certifications arising from Cipla’s amendment of its ANDA with the FDA. In May 2024, we announced entry into a settlement agreement with Cipla, which resolved patent litigation we brought in response to Cipla’s ANDA. For a more detailed discussion of the Cipla matter, see“Note 12. Commitments and Contingencies – Legal Proceedings” of the “Notes to Consolidated Financial Statements” in Part II, Item 8 of this Annual Report on Form 10-K.

Current report

•In July 2024, Ipsen announced the expansion of our collaboration for the commercialization of cabozantinib to include pNET and epNET indications. Accordingly, Ipsen has sought marketing authorizations for CABOMETYX in these indications in certain territories outside of the U.S. and Japan, and in addition, Ipsen has opted into and is now co-funding the development costs for CABINET.

Current report

•In August 2024, we announced that the FDA had accepted our sNDA for CABOMETYX as a treatment for adult patients with previously treated, locally advanced/unresectable or metastatic, well- or moderately differentiated pNET and epNET, granted standard review and assigned a PDUFA target action date of April 3, 2025. In November 2024, we announced that our sNDA would be discussed at an ODAC meeting in March 2025; however, in January 2025, we announced that the FDA had notified us that our sNDA would no longer be the subject of discussion at an ODAC.

Current report

•In August 2024, we announced the initiation of a phase 1 clinical trial evaluating XB010, our first ADC advanced internally, following the FDA’s earlier acceptance of our IND filing.

Current report

•In August 2024, we announced the achievement of a $150.0 million commercial milestone, recognized as license revenues from Ipsen during the second quarter of 2024, following Ipsen’s achievement of $600.0 million in cumulative net sales of cabozantinib in its related license territory over four consecutive quarters, which milestone payment we received during the third quarter of 2024.

Current report

•In August 2024, we announced that our Board of Directors authorized the repurchase of up to $500 million of our common stock through the end of 2025, the third stock repurchase program undertaken by Exelixis since March 2023. Under this program, as of the end of fiscal year 2024, we have repurchased $205.6 million of our common stock, at an average price of $33.62 per share.

Current report

•In October 2024, we announced a clinical development collaboration with Merck to support the evaluation of the combination of zanzalintinib and KEYTRUDA in SCCHN through our ongoing STELLAR-305 phase 3 pivotal trial, as well as future evaluations of the combination of zanzalintinib and WELIREG in RCC, including a phase 1/2 trial and two phase 3 pivotal trials to be sponsored by Merck.

Current report

•In October 2024, we announced the initiation of a phase 1 clinical trial evaluating XL495, our small molecule inhibitor of PKMYT1, following the FDA’s earlier acceptance of our IND filing.

Current report

•In January 2025, preliminary results from a randomized expansion cohort of patients with metastatic CRC from STELLAR-001, and results from a subgroup analysis of patients in the epNET cohort with advanced gastrointestinal NET in CABINET, were presented at the ASCO GI 2025.

Current report

•Net product revenues for 2024 were $1,809.4 million, as compared to $1,628.9 million for 2023.

Current report

•For the year ended December 31, 2024, milestone revenues included: (1) $150.0 million in license revenues recognized in connection with a commercial milestone from Ipsen upon its achievement of $600.0 million in cumulative net sales of cabozantinib over four consecutive quarters in its related Ipsen license territory; (2) $2.2 million in license revenues recognized in connection with a commercial milestone from Ipsen upon its achievement of CAD$30.0 million in cumulative net sales of cabozantinib over four consecutive quarters in Canada; and (3) $11.4 million in revenues related to a $12.5 million regulatory milestone from Ipsen upon submission of a variation application the EMA for evaluating cabozantinib versus placebo in patients with either advanced pNET or advanced epNET who experienced progression after prior systematic therapy.

Current report

In addition, we track our external clinical trial costs by product and product candidate and by scientific modalities, which are categorized as small molecule and biotherapeutics programs. Small molecule clinical development for the reported periods was primarily composed of cabozantinib and zanzalintinib. Biotherapeutics clinical development for the reported periods was primarily composed of XB002 and XB010.

Current report

Clinical trial costs by scientific modalities, by product and by product candidate were as follows (dollars in thousands):

Current report

The decrease in selling, general and administrative expenses for the year ended December 31, 2024, as compared to 2023, was primarily due to decreases in corporate giving, legal and advisory fees related to the 2023 proxy contest and a reduction in activities related to litigation, technology costs and stock-based compensation expenses, partially offset by an increase in personnel expenses.

Current report

We project our selling, general and administrative expenses may increase in fiscal year 2025, as compared to 2024, as a result of an increase in the Branded Prescription Drug Fee due to higher revenues and an increase in marketing activities in support of the anticipated commercial launch of CABOMETYX for the treatment of patients with either advanced pNET or advanced epNET who experienced progression after prior systemic therapy.

Current report

Impairment of long-lived assets for the year ended December 31, 2024, relates to certain leased facilities at our Alameda campus. During fiscal year 2024, we listed certain buildings for sublease. As a result, we assessed the impacted asset groups for impairment and concluded that the related right-of-use assets and leasehold improvements were not fully recoverable and recognized a $51.7 million non-cash impairment charge. See “Note 12. Commitments and Contingencies” of the “Notes to Consolidated Financial Statements” in Part II, Item 8 of this Annual Report on Form 10-K for additional information.

Current report

Impairment of long-lived assets were as follows (dollars in thousands):

Current report

Restructuring expenses resulted from the execution of the 2024 Restructuring Plan to reduce our workforce and rebalance our cost structure in alignment with our strategic priorities. Restructuring expenses consist of severance and employee-related costs, asset impairment, and contract termination costs. We incurred the majority of the charges related to the 2024 Restructuring Plan during the first quarter of 2024. See “Note 13. Restructuring” of the “Notes to Consolidated Financial Statements” in Part II, Item 8 of this Annual Report on Form 10-K for additional information.

Current report

In January 2024, our Board of Directors authorized the repurchase of up to $450.0 million of our common stock before the end of 2024. As of June 30, 2024, we completed the repurchase of 20.3 million shares of common stock for an aggregate purchase price of $450.0 million pursuant to our stock repurchase program. In August 2024, our Board of Directors authorized a stock repurchase program to acquire up to $500.0 million of our outstanding common stock before the end of 2025. Under this program, during the third and fourth quarter of 2024, we repurchased 6.1 million shares of common stock for an aggregate purchase price of $205.6 million. As of December 31, 2024, approximately $294.4 million remained available for future stock repurchases before the end of 2025. Stock repurchases under this program may be made from time to time through a variety of methods, which may include open market purchases, in block trades, Rule 10b5-1 trading plans, accelerated share repurchase transactions, exchange transactions, or any combination of such methods.
Removed paragraphs (30)

Previous report

We are also pursuing other indications for cabozantinib that have the potential to increase the number of cancer patients who could potentially benefit from this medicine. Building on preclinical and clinical observations that cabozantinib in combination with ICIs may promote a more immune-permissive tumor environment, we initiated several pivotal studies to further explore these combination regimens. The first of these studies to deliver results was CheckMate -9ER, a phase 3 pivotal trial evaluating the combination of CABOMETYX and nivolumab compared to sunitinib in patients with previously untreated, advanced or metastatic RCC. Positive results from CheckMate -9ER served as the basis for the FDA’s, EC’s and MHLW’s approvals of CABOMETYX in combination with nivolumab as a first-line treatment of patients with advanced RCC in January 2021, March 2021 and August 2021, respectively. We are also collaborating with BMS on COSMIC-313, a phase 3 pivotal trial evaluating the triplet combination of cabozantinib, nivolumab and ipilimumab versus the combination of nivolumab and ipilimumab in patients with previously untreated advanced intermediate- or poor-risk RCC. We announced top-line results from COSMIC-313 in July 2022, and in September 2022 we presented the data at the Presidential Symposium III at the 2022 ESMO Congress. The trial met its primary endpoint, demonstrating significant improvement in BIRC-assessed PFS at the primary analysis for the triplet combination. At two prespecified interim analyses for the secondary endpoint of OS, conducted most recently during the third quarter of 2023, the data did not meet the threshold for statistical significance; therefore, the trial continues to the next planned analysis of OS, anticipated in 2024. The safety profile observed in the trial was reflective of the known safety profiles for each single agent, as well as the combination regimens used in this study. We plan to discuss a potential regulatory submission with the FDA when the results of the next OS analysis are available, provided such results are supportive.

Previous report

Independent investigators also conduct clinical trials evaluating cabozantinib through our CRADA with NCI-CTEP or our IST program. As reflected by the results from completed trials and ongoing clinical trials, we believe our CRADA with NCI-CTEP has facilitated and may continue to facilitate the expansion of the cabozantinib franchise in a cost-efficient manner. In August 2023, we announced positive results from the CABINET phase 3 pivotal study under our CRADA and conducted by the Alliance that evaluated cabozantinib versus placebo in patients who experienced progression after prior systemic therapy in two independently powered cohorts: one for patients with advanced pNET; and another for patients with epNET. Data from CABINET demonstrated that cabozantinib substantially prolonged the time to disease progression or death in both pNET and epNET cohorts, and that the safety profile of cabozantinib observed in the trial was consistent with its known safety profile. Detailed findings from CABINET were presented during a Proffered Paper Session at the ESMO Congress in October 2023. We are discussing these results with the FDA to support a potential regulatory submission in 2024. In addition to facilitating label expansion for the cabozantinib franchise, data sets from these externally sponsored clinical trials may also prove valuable by informing our development plans for zanzalintinib.

Previous report

For additional information on our cabozantinib clinical trials, see “Business—Exelixis Development Programs—Cabozantinib Development Program” in Part I, Item 1 of this Annual Report on Form 10-K.

Previous report

STELLAR-001 is a phase 1b/2 clinical trial evaluating zanzalintinib, both as a monotherapy and in combination with atezolizumab. We have established the recommended dose of 100 mg for both monotherapy zanzalintinib and zanzalintinib in combination with atezolizumab, and we have completed enrollment in expansion cohorts for patients with clear cell RCC, non-clear cell RCC, hormone-receptor positive breast cancer, mCRPC and CRC. We previously presented data from STELLAR-001 during poster sessions at the 2022 ESMO Congress in September 2022, which showed preliminary clinical activity similar to that observed with cabozantinib in phase 1 across a range of solid tumors and dose levels, with a manageable safety profile. More recently, we presented initial results evaluating monotherapy zanzalintinib in patients with previously treated clear cell RCC during the Oral Abstracts session at IKCS in November 2023. Follow-up continues in this cohort as well as the other completed cohorts, and we continue to be encouraged by zanzalintinib’s emerging safety and efficacy profile, both as a monotherapy and in combination with ICIs. STELLAR-002 is a phase 1b/2 clinical trial evaluating zanzalintinib in combination with either nivolumab, nivolumab and ipilimumab, or a fixed-dose combination of nivolumab and relatlimab. We have established recommended doses of zanzalintinib for these combination regimens and are exploring in a diverse array of solid tumor expansion cohorts, including clear cell RCC, non-clear cell RCC, HCC, mCRPC and CRC; patient enrollment into these expansion cohorts is ongoing. Monotherapy zanzalintinib may also be evaluated to support regulatory requirements for dosing and contribution of components. Most recently, in December 2023, we initiated STELLAR-009, an open-label phase 1b/2 trial evaluating zanzalintinib in combination with AB521 in patients with advanced solid tumors, including clear cell RCC. STELLAR-009 is divided into dose-escalation and expansion phases, and patient enrollment into dose-escalation cohorts is ongoing.

Previous report

Our first zanzalintinib pivotal trial, STELLAR-303, was initiated in June 2022 and is evaluating zanzalintinib in combination with atezolizumab versus regorafenib in patients with metastatic non-microsatellite instability-high or non-mismatch repair-deficient CRC who have progressed after or are intolerant to the current standard of care. The trial aims to enroll approximately 874 patients at approximately 135 sites globally, regardless of RAS status, with approximately 350 of these patients showing no evidence of liver metastases. Under the amended trial protocol, the primary efficacy endpoint of STELLAR-303 is OS in those patients without liver metastases, and the key secondary efficacy endpoint is OS in the full intent-to-treat population. Additional secondary endpoints include investigator-assessed PFS, ORR and DOR per RECIST v. 1.1 in each population. The second pivotal trial, STELLAR-304, was initiated in December 2022 and is evaluating zanzalintinib in combination with nivolumab versus sunitinib in previously untreated patients with advanced non-clear cell RCC. The trial aims to enroll approximately 291 patients at approximately 173 sites globally. The primary efficacy endpoints of STELLAR-304 are BIRC-assessed PFS and ORR per RECIST v. 1.1. The secondary efficacy endpoint is OS. Most recently, in December 2023, we initiated STELLAR-305, a phase 2/3 pivotal trial evaluating zanzalintinib in combination with Merck & Co.’s pembrolizumab versus monotherapy pembrolizumab in patients with previously untreated PD-L1-positive recurrent or metastatic SCCHN. The primary efficacy endpoints of STELLAR-305 are BIRC-assessed PFS per RECIST v. 1.1 and OS. Secondary endpoints include investigator-assessed PFS per RECIST v. 1.1 and ORR and DOR per RECIST v. 1.1 as assessed by both BIRC and the investigator.

Previous report

Beyond STELLAR-303, STELLAR-304 and STELLAR-305, we intend to initiate additional early-stage and pivotal trials evaluating zanzalintinib in novel combination regimens across a broad array of future potential indications. For additional information on our zanzalintinib clinical trials, see “Business—Exelixis Development Programs—Pipeline Development Programs – Advancing Exelixis’ Future Cancer Therapy Candidates—Zanzalintinib Development Program” in Part I, Item 1 of this Annual Report on Form 10-K.

Previous report

Furthest along amongst our biotherapeutics programs is XB002, our lead TF-targeting ADC program, in-licensed from Iconic. XB002 is a next-generation ADC composed of a human mAb against TF that is conjugated to an MTI payload. TF is highly expressed on tumor cells and TF overexpression, while not oncogenic itself, facilitates angiogenesis, metastasis and other processes important to tumor development and progression. After binding to TF on tumor cells, XB002 is internalized, and the MTI payload is released, resulting in targeted tumor cell death. XB002 is a rationally designed next-generation ADC that leverages proprietary linker-payload technology. We are evaluating XB002, both as a single agent and in combination with nivolumab, in JEWEL-101, a phase 1 study in patients with advanced solid tumors. In October 2022, we announced promising initial dose-escalation results from JEWEL-101 during the Antibody-drug Conjugates Poster Session at the 2022 ENA Symposium. The data demonstrated that XB002 was well-tolerated at multiple dose levels, and a pharmacokinetic analysis confirmed that XB002 was stable with low levels of free payload. We have initiated the cohort-expansion phase of JEWEL-101 for monotherapy XB002, which is designed to further explore two doses of XB002 in individual tumor cohorts, including NSCLC, SCCHN, cervical cancer and ovarian cancer. Additional cohorts being evaluated with a single dose of XB002 include endometrial cancer, pancreatic cancer, esophageal cancer, mCRPC, triple negative breast cancer and hormone-receptor positive breast cancer, as well as a TF-expressing tumor-agnostic cohort. We are continuing to enroll patients in combination dose-escalation cohorts with nivolumab and will explore the combination potential with zanzalintinib. Additional expansion cohorts are planned for evaluating these various combinations as part of our goal to advance XB002 into full development. We intend to evaluate the potential of XB002 as monotherapy and in combination with other therapies across a wide range of tumor types, including indications other than those currently addressed by commercially available TF-targeting therapies. For additional information on JEWEL-101 and our development plans for XB002, see “Business—Exelixis Development Programs—Pipeline Development Programs – Advancing Exelixis’ Future Cancer Therapy Candidates—XB002 Development Program” in Part I, Item 1 of this Annual Report on Form 10-K.

Previous report

For additional information on these specific research collaborations and in-licensing arrangements related to our biotherapeutics programs, see “Business—Collaborations and Business Development Activities—Research Collaborations and In-licensing Arrangements” in Part I, Item 1 of this Annual Report on Form 10-K.

Previous report

During 2023, we continued to execute on our business objectives, generating significant revenues from operations and enabling us to continue to seek to maximize the clinical and commercial potential of our products and expand our product pipeline. Significant business updates and financial highlights for 2023 and subsequent to year-end include:

Previous report

•In February 2023, cabozantinib in patients with forms of RCC was the subject of multiple data presentations at the 2023 ASCO Genitourinary Cancers Symposium.

Previous report

•In March 2023, Sairopa initiated a phase 1 clinical trial evaluating ADU-1805, a potentially best-in-class monoclonal antibody developed by Sairopa that targets SIRPα, following the FDA’s clearance of Sairopa’s IND filing in February 2023.

Previous report

•In March 2023, we announced results from the phase 3 CONTACT-03 trial evaluating cabozantinib in combination with atezolizumab versus cabozantinib alone in patients with locally advanced or metastatic clear cell or non-clear cell, papillary or unclassified only, RCC who progressed during or after immune checkpoint inhibitor therapy, either combination or monotherapy, in which the combination did not meet its primary endpoint of PFS.

Previous report

•In March 2023, we announced that our Board of Directors had authorized the repurchase of up to $550 million of our common stock, which was completed in 2023.

Previous report

•In May 2023, Tomas J. Heyman, David E. Johnson and Robert L. Oliver were elected to our Board of Directors at our 2023 Annual Meeting of Stockholders. Mr. Heyman currently serves as the interim Chief Executive Officer of Interlaken Therapeutics, Inc., having previously served for over 35 years at Johnson & Johnson, most recently as President of the venture capital group, Johnson & Johnson Innovation. Mr. Johnson currently serves as the Managing Partner and Chief Investment Officer of Caligan Partners LP. Mr. Oliver currently serves as an Executive Advisor of Cellix Biosciences, Inc. and of Hyalo Technologies, LLC, having previously served in a variety of senior positions at Otsuka America Pharmaceutical, including as President and Chief Executive Officer, and at Wyeth Pharmaceuticals. These new directors filled vacancies on our Board of Directors following the departures of Carl B. Feldbaum, Esq., Vincent T. Marchesi, M.D., Ph.D. and Lance Willsey, M.D. in May 2023.

Previous report

•In June 2023, cabozantinib was the subject of multiple presentations at the 2023 ASCO Annual Meeting, including three-year quality-of-life follow-up data from CheckMate -9ER and detailed results from CONTACT-03, as well as updated data from the phase 1 study of CBX-12.

Previous report

•In July 2023, weannounced entry into a settlement agreement with Teva. This settlement resolves patent litigation we brought in response to Teva’s ANDA seeking approval to market a generic version of CABOMETYX prior to the expiration of certain of our patents. For a more detailed discussion of this litigation matter involving Teva, see “Legal Proceedings” in Part I, Item 3 of this Annual Report on Form 10-K.

Previous report

•In August 2023, we announced positive results from the phase 3 CONTACT-02 trial evaluating cabozantinib in combination with atezolizumab versus a second NHT in patients with mCRPC and measurable extra-pelvic soft-tissue disease who have progressed after treatment with a prior NHT. The combination met one of the primary endpoints, demonstrating a statistically significant improvement in PFS at the primary analysis. At a prespecified interim analysis for the other primary endpoint of OS, a trend toward improvement of OS was observed; however, the data were immature and did not meet the threshold for statistical significance. Therefore, the trial continues to the next planned OS analysis, anticipated in 2024.

Previous report

•In August 2023, we appointed Amy Peterson, M.D., as our new Executive Vice President, Product Development & Medical Affairs, and Chief Medical Officer of the Company.

Previous report

•In August 2023, weannounced the early unblinding and halting of The Alliance’s phase 3 CABINET trial due to dramatic improvements in PFS observed at interim analyses and based on local investigator assessment. Detailed findings from CABINET were presented during a Proffered Paper Session at the 2023 ESMO Congress in October 2023. We are discussing these results with the FDA to support a potential regulatory submission in 2024.

Previous report

•In September 2023, we entered into an exclusive license agreement with Insilico, which grants us global rights to develop and commercialize XL309. We completed the transfer of stewardship of the ongoing phase 1 clinical trial evaluating XL309 from Insilico to us during the fourth quarter of 2023.

Previous report

•In November 2023, we presented data from the clear cell RCC expansion cohort of STELLAR-001 during the Oral Abstracts session at the 2023 International Kidney Cancer Symposium.

Previous report

•In December 2023, we announced a clinical trial collaboration with Arcus and the initiation of STELLAR-009, a phase 1b/2 trial evaluating zanzalintinib in combination with AB521 in patients with advanced solid tumors, including clear cell RCC.

Previous report

•In December 2023, we hosted our R&D Day: Science & Strategy event in New York City to provide a strategic review of our biotherapeutics and small molecule pipeline.

Previous report

•In January 2024, we announced that our Board of Directors had authorized the repurchase of up to $450 million of our common stock before the end of 2024.

Previous report

•In January 2024, we presented detailed results from CONTACT-02 and four-year follow-up results from CheckMate -9ER at the 2024 ASCO Genitourinary Cancers Symposium.

Previous report

•Net product revenues for 2023 were $1,628.9 million, as compared to $1,401.2 million for 2022.

Previous report

•For the year ended December 31, 2022, $25.8 million in revenues was recognized in connection with two regulatory milestones totaling $27.0 million upon the approval by the EC and Health Canada of cabozantinib as a monotherapy for the treatment of adult patients with locally advanced or metastatic DTC, refractory or not eligible to RAI who have progressed during or after prior systemic therapy.

Previous report

The increase in selling, general and administrative expenses for the year ended December 31, 2023, as compared to 2022, was primarily related to increases in personnel expenses, technology costs, facility expenses, legal and advisory fees related to litigation and the proxy contest, and stock-based compensation expense. Personnel expenses increased primarily due to increases in administrative headcount to support our commercial and research and development organizations. The increases in technology costs include our investments in business technology initiatives, including cybersecurity, to support productivity and efficiency in our organization. The increase in facility expenses was primarily due to the commencement of new leases in 2022 and 2023. Stock-based compensation expense increased primarily due to higher expense associated with the achievement of certain performance conditions for PSUs.

Previous report

We project our selling, general and administrative expenses may decrease in fiscal year 2024, as compared to 2023, due to decreases in consulting and outside services and legal and advisory fees.
Reworded paragraphs (63)

Previous wording

We are an oncology company innovating next-generation medicines and combination regimens at the forefront of cancer care. Through the commitment of our drug discovery, development and commercialization resources, we have produced four marketed pharmaceutical products, two of which are formulations of our flagship molecule, cabozantinib. We continue to evolve our product portfolio, leveraging our investments, expertise and strategic partnerships to target an expanding range of tumor types and indications with our clinically differentiated pipeline of small molecules and biotherapeutics, including ADCs.

Current wording

We are an oncology company innovating next-generation medicines and combination regimens at the forefront of cancer care. We have produced four marketed pharmaceutical products, two of which are formulations of our flagship molecule, cabozantinib, and we are steadily advancing and evolving our product pipeline portfolio, including our lead asset zanzalintinib, currently the focus of an extensive late-stage clinical development program. With a rational and disciplined approach to investment, we are leveraging our internal experience and expertise, and the strength of strategic partnerships, to identify and pursue opportunities across the landscape of scientific modalities, including small molecules, biotherapeutics and ADCs.

Previous wording

Sales related to cabozantinib account for the majority of our revenues. Cabozantinib is an inhibitor of multiple tyrosine kinases, including MET, AXL, VEGF receptors and RET and has been approved by the FDA and in 69 other countries: as CABOMETYX tablets for advanced RCC (both alone and in combination with BMS’ nivolumab), for previously treated HCC and for previously treated, RAI-refractory DTC; and as COMETRIQ capsules for progressive, metastatic MTC. For physicians treating these types of cancer, cabozantinib has become or is becoming an important medicine in their selection of effective therapies.

Current wording

Sales related to cabozantinib account for the majority of our revenues. Cabozantinib is an inhibitor of multiple tyrosine kinases, including MET, AXL, VEGF receptors and RET and has been approved by the FDA and in 67 other countries: as CABOMETYX® (cabozantinib) tablets for advanced RCC (both alone and in combination with BMS’ nivolumab (OPDIVO®)), for previously treated HCC and for previously treated, RAI-refractory DTC; and as COMETRIQ® (cabozantinib) capsules for progressive, metastatic medullary thyroid cancer. For physicians treating these types of cancer, cabozantinib has become or is becoming an important medicine in their selection of effective therapies.

Previous wording

The other two products resulting from our discovery efforts are: COTELLIC, an inhibitor of MEK, approved as part of multiple combination regimens to treat specific forms of advanced melanoma and marketed under a collaboration with Genentech; and MINNEBRO, an oral, non-steroidal, selective blocker of MR, approved for the treatment of hypertension in Japan and licensed to Daiichi Sankyo.

Current wording

The other two products resulting from our discovery efforts are: COTELLIC® (cobimetinib), an inhibitor of MEK, approved as part of multiple combination regimens to treat specific forms of advanced melanoma and marketed under a collaboration with Genentech (a member of the Roche Group); and MINNEBRO® (esaxerenone), an oral, non-steroidal, selective blocker of the mineralocorticoid receptor, approved for the treatment of hypertension in Japan and licensed to Daiichi Sankyo Company, Limited.

Previous wording

We plan to continue leveraging our operating cash flows to advance a broad array of diverse biotherapeutics and small molecule programs for the treatment of cancer, as well as to support ongoing company-sponsored and externally sponsored trials evaluating cabozantinib. The product candidates furthest along in our pipeline are: zanzalintinib, a novel, potent, next-generation oral TKI that targets VEGF receptors, MET and the TAM kinases (TYRO3, AXL and MER); and XB002, a next-generation TF-targeting ADC, administered via intravenous infusion and composed of a human mAb against TF that is conjugated to an MTI payload. Our internal drug discovery efforts are supplemented through in-licensing investigational oncology assets or obtaining options to acquire other investigational oncology assets from third parties if they demonstrate evidence of clinical success. Examples are: XL309, a clinical-stage and potentially best-in-class small molecule inhibitor of USP1, which has emerged as a synthetic lethal target in the context of BRCA-mutated tumors; and ADU-1805, a clinical-stage and potentially best-in-class mAb that targets SIRPα.

Current wording

We plan to continue leveraging our operating cash flows to advance a broad array of diverse biotherapeutics and small molecule programs for the treatment of cancer, as well as to support ongoing company-sponsored and externally sponsored trials evaluating cabozantinib. Furthest along in our pipeline is zanzalintinib, a novel, potent, third-generation oral TKI that targets VEGF receptors, MET and the TAM kinases (TYRO3, AXL and MER). Our zanzalintinib program includes a series of ongoing and planned pivotal trials to explore its therapeutic potential in CRC, RCC, SCCHN and NET, as well as earlier-stage trials. Our other pipeline programs in phase 1 development each have best-in-class potential and include: XL309, a small molecule inhibitor of USP1, which has emerged as a synthetic lethal target in the context of BRCA-mutated tumors; XB010, an ADC consisting of a MMAE payload conjugated to a human mAb targeting the tumor antigen 5T4; and XL495, a small molecule inhibitor of PKMYT1. We complement our internal drug discovery and development efforts by in-licensing investigational oncology assets or obtaining options to acquire other investigational oncology assets from third parties if those oncology assets demonstrate evidence of clinical success. Examples of this approach include XL309 and ADU-1805, a clinical-stage and potentially best-in-class human mAb that targets SIRPα.

Previous wording

The FDA first approved CABOMETYX in the U.S. as a monotherapy for previously treated patients with advanced RCC in April 2016, and then for previously untreated patients with advanced RCC in December 2017. In January 2021, the CABOMETYX label was expanded to include first-line advanced RCC in combination with nivolumab, which was the first CABOMETYX regimen approved for treatment in combination with an ICI. In addition to RCC, in January 2019, the FDA approved CABOMETYX for the treatment of patients with HCC previously treated with sorafenib, and then in September 2021, the FDA approved CABOMETYX for the treatment of adult and pediatric patients 12 years of age and older with locally advanced or metastatic DTC that has progressed following prior VEGF receptor-targeted therapy and who are RAI-refractory or ineligible. To develop and commercialize cabozantinib outside the U.S., we have entered into license agreements with Ipsen and Takeda. To Ipsen, we granted the rights to develop and commercialize cabozantinib outside of the U.S. and Japan, and to Takeda we granted such rights in Japan. Both Ipsen and Takeda also contribute financially and operationally to the further global development and commercialization of the cabozantinib franchise in other potential indications, and we work closely with them on these activities. Utilizing its regulatory expertise and established international oncology marketing network, Ipsen has continued to execute on its commercialization plans for CABOMETYX, having received regulatory approvals and launched in multiple territories outside of the U.S., including in the EU, the U.K. and Canada, as a treatment for advanced RCC (both as a monotherapy and in combination with nivolumab) and for previously treated HCC and DTC indications. With respect to the Japanese market, Takeda received Manufacturing and Marketing Approvals from the Japanese MHLW for monotherapy CABOMETYX as a treatment of patients with curatively unresectable or metastatic RCC and as a treatment of patients with unresectable HCC that has progressed after cancer chemotherapy, as well as for CABOMETYX in combination with nivolumab as a treatment for unresectable or metastatic RCC.

Current wording

To develop and commercialize cabozantinib outside the U.S., we have entered into license agreements with Ipsen and Takeda. To Ipsen, we granted the rights to develop and commercialize cabozantinib outside of the U.S. and Japan, and to Takeda we granted such rights in Japan. Both Ipsen and Takeda also contribute financially and operationally to the further global development and commercialization of the cabozantinib franchise in other potential indications, and we work closely with them on these activities. Utilizing its regulatory expertise and established international oncology marketing network, Ipsen has continued to execute on its commercialization plans for CABOMETYX, having received regulatory approvals and launched in multiple territories outside of the U.S., including in the EU, the United Kingdom and Canada, as a treatment for advanced RCC (both as a monotherapy and in combination with nivolumab) and for previously treated HCC and DTC indications. With respect to the Japanese market, Takeda received Manufacturing and Marketing Approvals from the Japanese PMDA for monotherapy CABOMETYX as a treatment of patients with curatively unresectable or metastatic RCC and as a treatment of patients with unresectable HCC that has progressed after cancer chemotherapy, as well as for CABOMETYX in combination with nivolumab as a treatment for unresectable or metastatic RCC.

Previous wording

To further expand our exploration of combinations with ICIs, we also initiated multiple trials evaluating cabozantinib in combination with Roche’s ICI, atezolizumab, beginning in 2017 with COSMIC-021, a broad phase 1b study evaluating the safety and tolerability of cabozantinib in combination with atezolizumab in patients with a wide variety of locally advanced or metastatic solid tumors. The encouraging efficacy and safety data that emerged from COSMIC-021 have been instrumental in guiding our clinical development strategy for cabozantinib in combination with ICIs. In August 2023, we announced positive top-line results from CONTACT-02, a phase 3 pivotal trial sponsored by us and co-funded by Roche, evaluating the cabozantinib and atezolizumab combination versus a second NHT in patients with mCRPC and measurable extra-pelvic soft-tissue disease who have progressed after treatment with one prior NHT, and detailed findings from CONTACT-02 were presented at the ASCO Genitourinary Cancers Symposium in January 2024. The trial met one of two primary endpoints, demonstrating a statistically significant improvement in PFS. At a prespecified interim analysis for the primary endpoint of OS, a trend toward improvement of OS was observed; however, the data were immature and did not meet the threshold for statistical significance. Therefore, the trial continues to the next planned OS analysis, anticipated in 2024. The safety profile observed in the trial was reflective of the known safety profiles for each single agent, as well as the combination regimen used in this study. We are discussing a potential regulatory submission with the FDA.

Current wording

Building on preclinical and clinical observations that cabozantinib in combination with ICIs may promote a more immune-permissive tumor environment, we have initiated several pivotal studies to further explore these combination regimens, including collaborations with Roche and BMS. In August 2023, we announced positive top-line results from CONTACT-02, a phase 3 pivotal trial sponsored by us and co-funded by Roche, evaluating the combination of cabozantinib and Roche’s ICI, atezolizumab, versus a second NHT in patients with measurable, extra-pelvic mCRPC who have progressed after treatment with one prior NHT. The trial met one of two primary endpoints, demonstrating a statistically significant improvement in PFS in the predefined PFS intent-to-treat population (i.e., the first 400 randomized patients), and these data were presented at the American Society of Clinical Oncology Genitourinary Cancers Symposium in January 2024. For the second primary endpoint of OS, the final analysis for CONTACT-02, which was presented during the GU Tumours Proffered Paper Session at ESMO 2024, showed a trend that favored the combination of cabozantinib and atezolizumab but was not statistically significant. Of note, the trend in OS benefit was consistently observed in key subgroups, including in patients with liver metastases—a subgroup of mCRPC patients with the poorest prognosis in need of new treatment options, and one we anticipate will grow in the coming years. The safety profile observed in the trial was reflective of the known safety profiles for each single agent and was consistent with the known tolerability profile of approved ICI-TKI combinations in advanced solid tumors. We continue to evaluate the timing of a potential regulatory submission with the FDA. Both Ipsen and Takeda opted into and are co-funding the trial.

Previous wording

Zanzalintinib is a novel, potent, next-generation oral TKI that targets VEGF receptors, MET and the TAM kinases (TYRO3, AXL and MER) implicated in cancer’s growth and spread, and is our first in-house compound to enter the clinic following our re-initiation of drug discovery activities in 2017. In designing zanzalintinib, we sought to build upon our experience with cabozantinib, retaining a similar target profile while improving key characteristics, including the pharmacokinetic half-life. Zanzalintinib has a pharmacokinetic half-life of approximately one day, supporting once-daily dosing, which could translate into a favorable safety profile compared with other VEGF-receptor TKIs. Taken together with the promising anti-tumor activity, we believe zanzalintinib is positioned to be a best-in-class VEGF-receptor TKI in a wide range of solid tumors when used as a monotherapy, as well as in combination regimens. Accordingly, we are evaluating zanzalintinib in a growing development program that builds on our prior experience with cabozantinib, which we believe reduces program risk. We have also established collaborations and will continue to explore additional opportunities for novel combinations with zanzalintinib with the goal of improving standards of care. To date, we have initiated two large phase 1b/2 clinical trials studying zanzalintinib as a monotherapy and in combination with ICIs (STELLAR-001 and STELLAR-002), one targeted phase 1b/2 trial studying zanzalintinib in combination with Arcus’ AB521 (STELLAR-009), and three phase 3 or phase 2/3 pivotal trials evaluating zanzalintinib in combination with ICIs (STELLAR-303, STELLAR-304 and STELLAR-305).

Current wording

Zanzalintinib is a novel, potent, third-generation oral TKI that targets VEGF receptors, MET and the TAM kinases (TYRO3, AXL and MER) implicated in cancer’s growth and spread, and is our first in-house compound to enter the clinic following our re-initiation of drug discovery activities in 2017. We are evaluating zanzalintinib in a growing development program that builds on our prior experience with cabozantinib and targets indications with high unmet need. We have established collaborations and will continue to explore additional opportunities for novel combinations with zanzalintinib. To date, we have initiated two large phase 1b/2 clinical trials studying zanzalintinib as a monotherapy and in combination with ICIs (STELLAR-001 and STELLAR-002). Patient enrollment into STELLAR-001 was completed in 2023 and preliminary results from a randomized expansion cohort of patients with metastatic CRC were presented at the ASCO GI 2025. We anticipate initial clinical data readouts from STELLAR-002 in the first half of 2025. In addition, in December 2023, we initiated STELLAR-009 studying zanzalintinib in combination with AB521, an inhibitor of HIF-2α developed by Arcus; however, enrollment into STELLAR-009 was halted as of September 2024 following the joint decision between us and Arcus to wind down the study and end our clinical collaboration given the two companies’ differing strategies with respect to potential TKI-HIF combination regimens to treat RCC.

Previous wording

•In December 2023, we announced the initiation of STELLAR-305, a global phase 2/3 pivotal trial evaluating zanzalintinib in combination with pembrolizumab versus pembrolizumab as a monotherapy in patients with previously untreated PD-L1-positive recurrent or metastatic SCCHN.

Current wording

We have also initiated three pivotal trials evaluating zanzalintinib in combination with ICIs. Our first such trial, STELLAR-303, was initiated in June 2022 and is evaluating zanzalintinib in combination with atezolizumab versus regorafenib in patients with metastatic, refractory non-microsatellite instability-high or non-mismatch repair-deficient CRC; we announced completion of enrollment into STELLAR-303 in August 2024, and preliminary results are expected in the second half of 2025. The second pivotal trial, STELLAR-304, was initiated in December 2022 and is evaluating zanzalintinib in combination with nivolumab versus sunitinib in previously untreated patients with advanced nccRCC; we anticipate completing enrollment into STELLAR-304 by mid-2025. In December 2023, we initiated STELLAR-305, a phase 2/3 pivotal trial evaluating zanzalintinib in combination with pembrolizumab, an anti-PD-1 ICI developed by Merck & Co., versus monotherapy pembrolizumab in patients with previously untreated PD-L1-positive recurrent or metastatic SCCHN; enrollment into STELLAR-305 is ongoing. We intend to initiate additional pivotal trials evaluating zanzalintinib across a broad array of future potential indications, including in STELLAR-311, a planned phase 3 pivotal trial evaluating zanzalintinib versus everolimus as a first oral therapy in patients with advanced NET, regardless of site of origin, which we anticipate initiating in the first half of 2025.

Previous wording

Much of our drug discovery activity focuses on discovering and advancing various biotherapeutics that have the potential to become anti-cancer therapies, such as bispecific antibodies, ADCs and other innovative treatments. ADCs in particular present a unique opportunity for new cancer treatments, given their capabilities to deliver anti-cancer drug payloads to targets with increased precision while minimizing impact on healthy tissues. This approach has been validated by multiple regulatory approvals for the commercial sale of ADCs in the past several years. To facilitate the growth of our various biotherapeutics programs, we have established multiple research collaborations and in-licensing arrangements and entered into other strategic transactions, aimed at conserving capital and managing risks, that provide us with access to antibodies, binders, payloads and conjugation technologies, which are the components employed to generate next-generation ADCs or multispecific antibodies.

Current wording

Much of our drug discovery activity focuses on discovering and advancing various biotherapeutics that have the potential to become anti-cancer therapies, such as bispecific antibodies, ADCs and other innovative treatments. ADCs in particular present a unique opportunity for new cancer treatments, given their capabilities to target the delivery of anti-cancer drug payloads to specific cells expressing the target; this increased precision should minimize collateral impact on healthy tissues that do not express the target. This approach has been validated by multiple regulatory approvals of ADCs in the past several years. To facilitate the growth of our various biotherapeutics programs, we have established multiple research collaborations and in-licensing arrangements and have entered into other strategic transactions aimed at conserving capital and managing risks, collectively providing us access to antibodies, binders, payloads and conjugation technologies to generate next-generation ADCs or multispecific antibodies.

Previous wording

As part of our strategy to access clinical- or near-clinical-stage assets, we executed an exclusive option and license agreement and clinical development collaboration with Sairopa to develop ADU-1805. For more information on this arrangement, see “Business—Collaborations and Business Development Activities—Research Collaborations and In-licensing Arrangements” in Part I, Item 1 of this Annual Report on Form 10-K. ADU-1805 is currently being evaluated in a phase 1 clinical trial to explore its pharmacokinetics, safety, tolerability and preliminary anti-tumor activity in patients with advanced or metastatic refractory solid tumors and includes future plans to investigate the compound’s potential in combination with approved ICIs. For more information on the ADU-1805 development program, see “Business—Exelixis Development Programs—Pipeline Development Programs - Advancing Exelixis’ Future Cancer Therapy Candidates—ADU-1805 Development Program” in Part I, Item 1 of this Annual Report on Form 10-K. In addition to the option deal with Sairopa, some of our active research collaborations for biotherapeutics programs include collaborations with:

Current wording

As part of our strategy to access clinical- or near-clinical-stage assets, we executed an exclusive option and license agreement and clinical development collaboration with Sairopa to develop ADU-1805. ADU-1805 is currently being evaluated in a phase 1 clinical trial in patients with advanced or metastatic refractory solid tumors, and enrollment is ongoing. Plans for ADU-1805 include investigating the compound’s potential in combination with approved ICIs, including pembrolizumab. In addition to the option deal with Sairopa, some of our active research collaborations for biotherapeutics programs are with:

Previous wording

•Adagene, which is focused on using Adagene’s SAFEbody technology to develop novel masked ADCs or other innovative biotherapeutics with potential for improved therapeutic index;

Current wording

•Adagene, which is focused on using Adagene’s SAFEbody TM technology to develop novel masked ADCs or other innovative biotherapeutics with potential for improved therapeutic index;

Previous wording

We have made significant progress under these and other research collaborations and in-licensing arrangements and believe we will continue to do so in 2024 and future years. For example, as a direct result of these arrangements, we are advancing five biotherapeutics development candidates toward potential IND filings in 2024, 2025 and 2026: XB010, XB628, XB371, XB064, and XB033. XB010, our first ADC advanced internally, targets the tumor antigen 5T4 and incorporates an antibody sourced from Invenra and was constructed using Catalent’s SMARTag site-specific bioconjugation platform. XB628 is a bispecific antibody that targets PD-L1 and NKG2A, identified as key regulators of natural killer cell activity, and was discovered, in part, in collaboration with Invenra. XB371 is a next-generation TF-targeting ADC that is differentiated from XB002 by its topoisomerase inhibitor payload, and was discovered, in part, in collaboration with Catalent. XB064 is a high-affinity mAb that targets ILT2, which is associated with resistance to PD-1 pathway inhibitors, with potential to combine broadly with our internal pipeline and approved immunotherapy agents, and was discovered, in part, in collaboration with Invenra. XB033 is an ADC targeting the tumor antigen IL13Ra2, and was discovered, in part, in collaboration with Invenra and Catalent.

Current wording

We have made significant progress under our research collaborations and in-licensing arrangements and believe we will continue to do so in 2025 and in future years. For example, in August 2024, we announced the initiation of a phase 1 clinical trial evaluating XB010, both as a monotherapy and in combination with pembrolizumab, in patients with advanced solid tumors, following the FDA’s acceptance of our IND application, and enrollment is ongoing. XB010 is our first ADC advanced internally and consists of an MMAE payload conjugated to a mAb targeting the tumor antigen 5T4. XB010 was constructed using Catalent’s SMARTag site-specific bioconjugation platform, and its 5T4-targeting mAb was discovered in collaboration with Invenra. Over the next two years, we also intend to advance four additional biotherapeutic candidates toward potential IND filings, and each of these candidates was discovered, in part, in connection with our research collaborations and in-licensing arrangements, including: XB628, a bispecific antibody that targets both PD-L1 and NKG2A; XB371, a next-generation TF-targeting ADC that consists of a topoisomerase inhibitor payload conjugated to a mAb targeting TF; XB064, a high-affinity mAb that targets ILT2; and XB033, an ADC targeting the tumor antigen IL13Rα2.

Previous wording

Since its formation in 2000, our drug discovery group has advanced 25 compounds to the IND stage, either independently or with collaboration partners, and today we deploy our drug discovery expertise to advance small molecule programs toward and through preclinical development. These efforts are led by our experienced scientists, including some of the same scientists who led the efforts to discover cabozantinib, cobimetinib and esaxerenone, each of which are now commercially distributed drug products. For example, as discussed above, zanzalintinib, which was discovered at Exelixis, is furthest along and is now being evaluated in phase 3 clinical trials. We are also advancing a small molecule development candidate, XL495, toward a potential IND filing in 2024. XL495 is an inhibitor of PKMYT1 with best-in-class potential to treat solid tumors due to its improved selectivity and pharmacokinetics. In addition, we augment our small molecule discovery activities through research collaborations and in-licensing arrangements with other companies engaged in small molecule discovery. Most recently, in September 2023, we entered into an exclusive global license agreement with Insilico, granting us global rights to develop and commercialize XL309, a potentially best-in-class small molecule inhibitor of USP1, which has emerged as a synthetic lethal target in the context of BRCA-mutated tumors. In April 2023, the FDA cleared the initial IND for XL309 for the treatment of patients with solid tumors. For additional information on our development plans for XL309, see “Business—Exelixis Development Programs—Pipeline Development Programs – Advancing Exelixis’ Future Cancer Therapy Candidates—XL309 Development Program” in Part I, Item 1 of this Annual Report on Form 10-K, and for additional information on our research collaborations and in-licensing arrangements related to our small molecule programs, see “—Collaborations and Business Development Activities—Research Collaborations and In-licensing Arrangements.” We also continue to make progress on multiple lead optimization programs for inhibitors of a variety of targets that we believe play significant roles in tumor growth, and we anticipate that some of these other programs could reach development candidate status in 2024 and beyond.

Current wording

•XL495 is an inhibitor of PKMYT1 with best-in-class potential to treat solid tumors due to its improved selectivity and pharmacokinetic profiles. In October 2024, we announced the initiation of a phase 1 clinical trial evaluating XL495, both as a monotherapy and in combination with select cytotoxic agents, in patients with advanced solid tumors, following the FDA’s acceptance of our IND application.

Previous wording

Increasing the number of novel anti-cancer agents in our pipeline is essential to our overall strategy and business goals. We are working to expand our oncology product pipeline through drug discovery efforts, which encompass our diverse biotherapeutics and small molecule programs exploring multiple modalities and mechanisms of action. This approach provides a high degree of flexibility with respect to target selection and allows us to prioritize those targets that we believe have the greatest chance of yielding impactful therapeutics. As part of our strategy, our drug discovery activities have included and continue to include research collaborations, in-licensing arrangements and other strategic transactions that collectively incorporate a wide range of technology platforms and assets and increase our probability of success. As of the date of this Annual Report on Form 10-K, we expect to progress two new development candidates into preclinical development during 2024. We will continue to engage in pipeline expansion initiatives with the goal of acquiring and in-licensing promising investigational oncology assets and then further characterize and develop them utilizing our established preclinical and clinical development infrastructure.

Current wording

Increasing the number of novel anti-cancer agents in our pipeline is essential to our overall strategy and business goals. We are working to expand our oncology product pipeline through drug discovery efforts, which encompass our diverse biotherapeutics and small molecule programs exploring multiple modalities and mechanisms of action. This approach provides a high degree of flexibility with respect to target selection and modality of treatment and allows us to prioritize those targets that we believe have the greatest chance of becoming impactful therapeutics. As part of our strategy, our drug discovery activities have and will continue to include internal research, as well as external research collaborations, in-licensing arrangements and other strategic transactions that collectively leverage a wide range of technology platforms and assets and increase our probability of success. As of the date of this Annual Report on Form 10-K, we expect to progress up to three new development candidates into preclinical development during 2025. We will continue to engage in pipeline expansion initiatives with the goal of discovering, acquiring and/or in-licensing promising investigational oncology assets and then further characterize and develop them utilizing our established preclinical and clinical development infrastructure.

Previous wording

•In January 2024, we appointed Mary C. Beckerle, Ph.D. and Gail Eckhardt, M.D. to our Board of Directors. Dr. Beckerle currently serves as Chief Executive Officer of the Huntsman Cancer Institute and Distinguished Professor of Biological and Oncological Sciences at the University of Utah. Dr. Eckhardt currently serves as Associate Dean of Experimental Therapeutics at Baylor College of Medicine and Associate Director of Translational Research at the College’s Dan L. Duncan Comprehensive Cancer Center.

Current wording

•In January 2024, we appointed Mary C. Beckerle, Ph.D. and S. Gail Eckhardt, M.D. to our Board of Directors. Dr. Beckerle currently serves as Chief Executive Officer of the Huntsman Cancer Institute and Distinguished Professor of Biological and Oncological Sciences at the University of Utah. Dr. Eckhardt currently serves as Associate Dean of Experimental Therapeutics at Baylor College of Medicine and Associate Director of Translational Research at the College’s Dan L. Duncan Comprehensive Cancer Center.

Previous wording

•In March 2023, we filed a patent lawsuit in the Delaware District Court against Cipla asserting infringement of U.S. Patents No. 8,877,776, 11,091,439, 11,091,440, 11,098,015 and 11,298,349 arising from Cipla’s February 2023 notice letter, which notified us that Cipla filed an ANDA with the FDA requesting approval to market a generic version of CABOMETYX tablets prior to the expiration of the aforementioned patents. For a more detailed discussion of the Cipla litigation matter, see “Legal Proceedings” in Part I, Item 3 of this Annual Report on Form 10-K.

Current wording

•In September 2024, we received a notice letter regarding an ANDA submitted to the FDA by Sun Pharmaceutical Industries Ltd. (Sun), including a Paragraph IV certification with respect to our U.S. Patent Nos. 8,877,776, 9,724,342, 10,034,873, 10,039,757, 11,091,439, 11,091,440, 11,098,015 and 11,298,349, the latest of which expires on February 10, 2032, requesting approval to market a generic version of CABOMETYX tablets prior to the expiration of the aforementioned patents. On October 30, 2024, we filed a complaint in the Delaware District Court for patent infringement against Sun asserting infringement of U.S. Patent Nos. 8,877,776, 11,091,440, and 11,098,015. On January 22, 2025, Sun filed its response to the complaint, alleging that the asserted claims of U.S. Patent No. 8,877,776, 11,091,439, 11,091,440 and 11098,015 are invalid and not infringed. Sun also filed counterclaims that, inter alia, seek a declaratory judgment that Sun’s ANDA would not infringe any valid and enforceable claim of U.S. Patent Nos. 8,877,776, 11,091,439, 11,091,440, 11,098,015, 9,724,342, 10,034,873, 10,039,757, and 11,298,349. We have not yet responded to Sun’s counterclaims.

Previous wording

•In January 2023, the Delaware District Court issued a ruling in the MSN I trial, rejecting MSN’s challenge to U.S. Patent No. 7,759,473, which expires August 14, 2026. The Delaware District Court also ruled that MSN’s proposed ANDA product does not infringe U.S. Patent No. 8,877,776, which expires October 8, 2030, and entered judgment that the effective date of any final FDA approval of MSN’s ANDA shall not be a date earlier than August 14, 2026, the expiration date of U.S. Patent No. 7,759,473. This ruling in MSN I does not address the parties’ claims in MSN II. For a more detailed discussion of the MSN litigation matters, see “Legal Proceedings” in Part I, Item 3 of this Annual Report on Form 10-K.

Current wording

•In October 2024, the United States District Court for the District of Delaware (the Delaware District Court) issued a ruling in our two consolidated patent lawsuits against MSN Pharmaceuticals, Inc. (individually and collectively with certain of its affiliates, including MSN Laboratories Private Limited, referred to as MSN, and such lawsuits collectively referred to as MSN II), rejecting MSN’s invalidity challenge to each of U.S. Patents No. 11,091,439, 11,091,440 and 11,098,015, which expire January 15, 2030. The Delaware District Court had previously entered a stipulation that MSN’s proposed ANDA product infringes these patents. The Delaware District Court also ruled that our U.S. Patent No. 11,298,349 is not invalid and that MSN’s proposed ANDA product does not infringe this patent, which expires February 10, 2032. In accordance with these rulings, the Delaware District Court entered final judgment on October 23, 2024, that, should the FDA ultimately approve MSN’s ANDA, the effective date of any such approval shall not be a date earlier than January 15, 2030, the expiration date of each of U.S. Patents No. 11,091,439, 11,091,440 and 11,098,015, subject to our potential additional regulatory exclusivity. On November 22, 2024 MSN noticed an appeal to the Court of Appeals for the Federal Circuit and we noticed a cross-appeal on November 26, 2024. The Delaware District Court judgment is also subject to appeal by either party. In February 2025, we received notice that MSN submitted to the FDA a Paragraph IV certification regarding our Orange Book patent: U.S. Patent No. 12,128,039. For a more detailed discussion of the MSN II litigation matter, see “Note 12. Commitments and Contingencies – Legal Proceedings” of the “Notes to Consolidated Financial Statements” in Part II, Item 8 of this Annual Report on Form 10-K.

Previous wording

•Total revenues for 2023 were $1,830.2 million, as compared to $1,611.1 million for 2022.

Current wording

•Total revenues for 2024 were $2,168.7 million, as compared to $1,830.2 million for 2023.

Previous wording

•Research and development expenses for 2023 were $1,044.1 million, as compared to $891.8 million for 2022.

Current wording

•Research and development expenses for 2024 were $910.4 million, as compared to $1,044.1 million for 2023.

Previous wording

•Selling, general and administrative expenses for 2023 were $542.7 million, as compared to $459.9 million for 2022.

Current wording

•Selling, general and administrative expenses for 2024 were $492.1 million, as compared to $542.7 million for 2023.

Previous wording

•Provision for income taxes for 2023 was $49.8 million, as compared to $52.1 million for 2022.

Current wording

•Provision for income taxes for 2024 was $160.4 million, as compared to $49.8 million for 2023.

Previous wording

•Net income for 2023 was $207.8 million, or $0.65 per share, basic and diluted, as compared to $182.3 million, or $0.57 per share, basic and $0.56 per share, diluted, for 2022.

Current wording

•Net income for 2024 was $521.3 million, or $1.80 per share, basic and $1.76 per share, diluted, as compared to $207.8 million, or $0.65 per share, basic and diluted, for 2023.

Previous wording

We will continue to face numerous challenges and risks that may impact our ability to execute on our business objectives. In particular, for the foreseeable future, we expect our ability to generate sufficient cash flow to fund our business operations and growth will depend upon the continued commercial success of CABOMETYX, both alone and in combination with other therapies, as a treatment for the highly competitive indications for which it is approved, and possibly for other indications for which cabozantinib is currently being evaluated in potentially label-enabling clinical trials, if warranted by the data generated from these trials. However, we cannot be certain that the clinical trials we and our collaboration partners are conducting will demonstrate adequate safety and efficacy in these additional indications to receive regulatory approval in the major commercial markets where CABOMETYX is approved. Even if the required regulatory approvals to market CABOMETYX for additional indications are achieved, we and our collaboration partners may not be able to commercialize CABOMETYX effectively and successfully in these additional indications. In addition, CABOMETYX will only continue to be commercially successful if private third-party and government payers continue to provide coverage and reimbursement. As is the case for all innovative pharmaceutical therapies, obtaining and maintaining coverage and reimbursement for CABOMETYX is becoming increasingly difficult, both within the U.S. and in foreign markets. In addition, healthcare policymakers in the U.S. are increasingly expressing concern over healthcare costs, and corresponding legislative and policy initiatives and activities have been launched aimed at increasing the healthcare cost burdens borne by pharmaceutical manufacturers, as well as expanding access to, and restricting the prices and growth in prices of, pharmaceuticals.

Current wording

We will continue to face numerous challenges and risks that may impact our ability to execute on our business objectives. In particular, for the foreseeable future, we expect our ability to generate sufficient cash flow to fund our business operations and growth will depend upon the continued commercial success of CABOMETYX, both alone and in combination with other therapies, as a treatment for the highly competitive indications for which it is approved, and possibly for other indications for which cabozantinib is currently being evaluated in potentially label-enabling clinical trials, if warranted by the data generated from these trials. However, we cannot be certain that the clinical trials we and our collaboration partners are conducting will demonstrate adequate safety and efficacy in these additional indications to receive regulatory approval in the major commercial markets where CABOMETYX is approved.

Previous wording

In the longer term, we may eventually face competition from potential manufacturers of generic versions of our marketed products, including the proposed generic versions of CABOMETYX tablets that are the subject of ANDAs submitted to the FDA by MSN, Teva and Cipla. The approval of any of these ANDAs and subsequent launch of any generic version of CABOMETYX could significantly decrease our revenues derived from the U.S. sales of CABOMETYX and thereby materially harm our business, financial condition and results of operations.

Current wording

In the longer term, we may eventually face competition from potential manufacturers of generic versions of our marketed products, including the proposed generic versions of CABOMETYX tablets that are the subject of ANDAs submitted to the FDA by MSN, Teva, Cipla and Sun. The approval of any of these ANDAs and subsequent launch of any generic version of CABOMETYX could significantly decrease our revenues derived from the U.S. sales of CABOMETYX and thereby materially harm our business, financial condition and results of operations.

Previous wording

We have adopted a 52- or 53-week fiscal year policy that generally ends on the Friday closest to December 31st. Fiscal year 2021 ended December 31, 2021; fiscal year 2022 ended December 30, 2022; fiscal year 2023 ended December 29, 2023; and fiscal year 2024 will end on January 3, 2025. For convenience, references in this report as of and for the fiscal years ended December 30, 2022, and December 29, 2023 are indicated as being as of and for the years ended December 31, 2022 and 2023, respectively. In fiscal year 2024, the annual period and quarterly period ending January 3, 2025 are a 53-week fiscal year and a 14-week fiscal quarter, respectively; all other annual periods presented are 52-week fiscal years.

Current wording

We have adopted a 52- or 53-week fiscal year policy that generally ends on the Friday closest to December 31st. Fiscal year 2024, which was a 53-week fiscal year, ended on January 3, 2025; and fiscal year 2023, which was a 52-week fiscal year, ended on December 29, 2023. The 53-week fiscal year in 2024, as compared to the 52-week fiscal year in 2023, contributed to the year-over-year increases in certain revenues and expenses. For convenience, references in this report as of and for the fiscal years ended January 3, 2025 and December 29, 2023, are indicated as being as of and for the years ended December 31, 2024 and 2023, respectively. In fiscal year 2025, the annual period will end on January 2, 2026, and will be a 52-week fiscal year. The 52-week fiscal year in 2025 may result in a modest year-over-year impact on revenues and expenses, as compared to 2024.

Previous wording

The increase in net product revenues for the year ended December 31, 2023, as compared to 2022, was primarily related to a 9% increase in the number of CABOMETYX units sold as a result of the FDA’s approval of CABOMETYX in combination with nivolumab as a first-line treatment of patients with advanced RCC, and, to a lesser extent, a 7% increase in the average net selling price of CABOMETYX. The increase in sales volume is largely driven by refills due to the longer duration of therapy for this combination and an increase in related market share reflecting the continued evolution of the metastatic RCC, HCC and DTC treatment landscapes.

Current wording

The increase in net product revenues for the year ended December 31, 2024, as compared to 2023, was primarily related to an 8.2% increase in the number of CABOMETYX units sold as a result of the FDA’s approval of CABOMETYX in combination with nivolumab as a first-line treatment of patients with advanced RCC and, to a lesser extent, a 2.9% increase in the average net selling price of CABOMETYX. The increase in sales volume is largely driven by refills, reflecting the longer duration of therapy for this combination, and an increase in related market share reflecting the continued evolution of the metastatic RCC, HCC and DTC treatment landscapes.

Previous wording

We recognize product revenues net of discounts and allowances that are described in “Note 1. Organization and Summary of Significant Accounting Policies” of the “Notes to Consolidated Financial Statements” in Part II, Item 8 of this Annual Report on Form 10-K. Discounts and allowances as a percentage of gross revenues have generally increased over time as the number of patients participating in government programs has increased and as the discounts given and rebates paid to government payers have also increased. The increase in the amount of discounts and allowances for the year ended December 31, 2023, as compared to 2022, was primarily the result of an increase in the volume of units sold and higher utilization by covered entities in the 340B Drug Pricing Program.

Current wording

We recognize product revenues net of discounts and allowances that are described in “Note 1. Organization and Summary of Significant Accounting Policies” of the “Notes to Consolidated Financial Statements” in Part II, Item 8 of this Annual Report on Form 10-K. Discounts and allowances have generally increased over time as the number of patients participating in government programs has increased and as the discounts given and rebates paid to government payers have also increased. The increase in the amount of discounts and allowances for the year ended December 31, 2024, as compared to 2023, was primarily the result of an increase in the volume of units sold, and the increase in utilization and dollar amount of chargebacks under the Federal Supply Schedule program.

Previous wording

We project our discounts and allowances as a percentage of gross revenues may increase during fiscal year 2024 for similar reasons noted above.

Current wording

We project our discounts and allowances may increase during fiscal year 2025 for similar reasons noted above.

Previous wording

See “Note 3. Collaborations and Business Development Activities—Cabozantinib Commercial Collaborations—Performance Obligations and Transaction Prices for our Ipsen and Takeda Collaborations” in the “Notes to Consolidated Financial Statements" in Part II, Item 8 of this Annual Report on Form 10-K for a discussion on the allocation of transaction price which impacts the proportion of milestone revenues allocated to license revenues and collaboration services revenues.

Current wording

See “Note 4. Collaborations and Business Development Activities—Cabozantinib Commercial Collaborations—Performance Obligations and Transaction Prices for our Ipsen and Takeda Collaborations” of the “Notes to Consolidated Financial Statements” in Part II, Item 8 of this Annual Report on Form 10-K for a discussion on the allocation of transaction price which impacts the proportion of milestone revenues allocated to license revenues and collaboration services revenues.

Previous wording

Milestone revenues, which are allocated between license revenues and collaboration services revenues, were $15.0 million for the year ended December 31, 2023, as compared to $28.9 million for 2022. Milestone revenues by fiscal year included the following:

Current wording

Milestone revenues, which are allocated between license revenues and collaboration services revenues, were $169.3 million for the year ended December 31, 2024, as compared to $15.0 million for 2023. Milestone revenues by fiscal year included the following:

Previous wording

Royalty revenues increased primarily as a result of an increase in Ipsen’s net sales of cabozantinib outside of the U.S. and Japan. Ipsen royalties were $135.8 million for the year ended December 31, 2023, as compared to $110.1 million for 2022. Ipsen’s net sales of cabozantinib have continued to grow since the first commercial sale of CABOMETYX in the Ipsen territories in 2016, primarily due to regulatory approvals in new territories, including regulatory approval in the EU for the combination therapy of CABOMETYX and nivolumab received in March 2021. Royalty revenues for the year ended December 31, 2023 also included $12.7 million, as compared to $11.3 million for 2022, related to Takeda’s net sales of cabozantinib, which have continued to grow since their first commercial sale of CABOMETYX in Japan in 2020. As of December 31, 2023, CABOMETYX is approved and commercially available in 69 countries outside of the U.S.

Current wording

Royalty revenues increased primarily as a result of an increase in Ipsen’s net sales of cabozantinib outside of the U.S. and Japan. Ipsen royalties were $154.0 million for the year ended December 31, 2024, as compared to $135.8 million for 2023. Ipsen’s net sales of cabozantinib have continued to grow since the first commercial sale of CABOMETYX in the Ipsen territories in 2016, primarily due to regulatory approvals in new territories, including regulatory approval in the EU for the combination therapy of CABOMETYX and nivolumab received in March 2021. Royalty revenues for the year ended December 31, 2024 also included $12.9 million, as compared to $12.7 million for 2023, related to Takeda’s net sales of cabozantinib. Takeda’s net sales of cabozantinib have continued to grow since Takeda’s first commercial sale of CABOMETYX in Japan in 2020; however, royalty revenues during the year ended December 31, 2024 were unfavorably impacted by foreign currency rate fluctuations, as compared to 2023. As of December 31, 2024, CABOMETYX is approved and commercially available in 67 countries outside of the U.S.

Previous wording

Our share of profits on the U.S. commercialization of COTELLIC under our collaboration agreement with Genentech was $13.0 million for the year ended December 31, 2023, as compared to $7.7 million for 2022. We also earned royalty revenues on ex-U.S. net sales of COTELLIC by Genentech of $3.9 million for the year ended December 31, 2023, as compared to $4.8 million for 2022.

Current wording

Our share of profits on the U.S. commercialization of COTELLIC under our collaboration agreement with Genentech was $10.6 million for the year ended December 31, 2024, as compared to $13.0 million for 2023. We also earned royalty revenues on ex-U.S. net sales of COTELLIC by Genentech of $3.0 million for the year ended December 31, 2024, as compared to $3.9 million for 2023.

Previous wording

We project our license revenues may remain flat in fiscal year 2024, as compared to 2023, as a result of the anticipated achievement of fewer milestones in 2024, partially offset by an increase in royalty revenues related to an increase in product sales by Ipsen and Takeda.

Current wording

We project our license revenues may decrease in fiscal year 2025, as compared to 2024, as a result of the anticipated achievement of fewer milestones in 2025, partially offset by an increase in royalty revenues related to an increase in product sales by Ipsen and Takeda.

Previous wording

Development cost reimbursements were $35.6 million for the year ended December 31, 2023, as compared to $60.3 million for 2022. The decrease in development cost reimbursements was primarily attributable to decreases in spending on the CONTACT-02, COSMIC-312, COSMIC-311 and COSMIC-021 studies.

Current wording

Development cost reimbursements were $25.8 million for the year ended December 31, 2024, as compared to $35.6 million for 2023. The decrease in development cost reimbursements during the year ended December 31, 2024 were primarily attributable to decreases in spending on the CONTACT-02, CheckMate -9ER and COSMIC-021 studies, partially offset by Ipsen’s decision to opt-in and co-fund CABINET development costs in the second quarter of 2024, which includes a cumulative catch-up for Ipsen’s share of global development costs incurred since the beginning of the study and through the opt-in date.

Previous wording

Collaboration services revenues were reduced by $19.2 million and $16.2 million for the years ended December 31, 2023 and 2022, respectively, as a result of the 3% royalty we are required to pay on the net sales by Ipsen and Takeda of any product containing cabozantinib. As royalty generating sales of cabozantinib by Ipsen and Takeda have increased as described above, our royalty payments have also increased.

Current wording

Collaboration services revenues were reduced by $21.3 million and $19.2 million for the years ended December 31, 2024 and 2023, respectively, to account for the 3% royalty we are required to pay on the net sales by Ipsen and Takeda of any product containing cabozantinib. As royalty generating sales of cabozantinib by Ipsen and Takeda have increased as described above, our royalty payments have also increased.

Previous wording

We project our collaboration services revenues may decrease in fiscal year 2024, as compared to 2023, primarily as a result of a decrease in development cost reimbursement revenues and uncertainties regarding the timing and achievement of commercial milestone revenues.

Current wording

We project our collaboration services revenues may decrease in fiscal year 2025, as compared to 2024, primarily as a result of a decrease in development cost reimbursement revenues, and uncertainties regarding the timing and achievement of development, regulatory, and commercial milestone revenues.

Previous wording

Cost of goods sold is related to our product revenues and consists of a 3% royalty payable on U.S. net sales of any product containing cabozantinib, as well as the cost of inventory sold, indirect labor costs, write-downs related to expiring, excess and obsolete inventory, and other third-party logistics costs. The increase in cost of goods sold for the year ended December 31, 2023, as compared to 2022, was primarily the result of increases in royalties from the increase in U.S. CABOMETYX sales and certain period costs. We project our gross margin in fiscal year 2024 will remain consistent with fiscal year 2023.

Current wording

Cost of goods sold is related to our product revenues and consists of a 3% royalty payable on U.S. net sales of any product containing cabozantinib, as well as the cost of inventory sold, indirect labor costs, write-downs related to expiring, excess and obsolete inventory, and other third-party logistics costs. The increase in cost of goods sold for the year ended December 31, 2024, as compared to 2023, was primarily due to the increase in royalties as a result of increased U.S. CABOMETYX sales, partially offset by a decrease in certain period costs. We project our gross margin in 2025 will remain consistent with fiscal year 2024.

Previous wording

We do not track fully burdened research and development expenses on a project-by-project basis. We group our research and development expenses into three categories: (1) development; (2) drug discovery; and (3) other research and development. Our development group leads the development and implementation of our clinical and regulatory strategies and prioritizes disease indications in which our compounds are being or may be studied in clinical trials. Development expenses include license and other collaboration costs, primarily comprised of upfront license fees, development milestones and other payments associated with our clinical-stage in-licensing collaboration programs, clinical trial costs, personnel expenses, consulting and outside services and other development costs, including manufacturing costs of our drug development candidates. Our drug discovery group utilizes a variety of technologies, including in-licensed technologies, to enable the rapid discovery, optimization and extensive characterization of lead compounds and biotherapeutics such that we are able to select development candidates with the best potential for further evaluation and advancement into clinical development. Drug discovery expenses include license and other collaboration costs primarily comprised of upfront license fees, research funding commitments, development milestones and other payments associated with our in-licensing collaboration programs in preclinical development stage. Other drug discovery costs include personnel expenses, consulting and outside services and laboratory supplies. Other research and development expenses include the allocation of general corporate costs to research and development services and development cost reimbursements in connection with certain of our collaboration arrangements.

Current wording

We do not track fully burdened research and development expenses on a project-by-project basis. We group our research and development expenses into three categories: (1) development; (2) drug discovery; and (3) other research and development. Our development group leads the development and implementation of our clinical and regulatory strategies and prioritizes disease indications in which our compounds are being or may be studied in clinical trials. Development expenses include license and other collaboration costs, primarily composed of upfront license fees, development milestones and other payments associated with our clinical-stage in-licensing collaboration programs, clinical trial costs, personnel expenses, consulting and outside services and other development costs, including manufacturing costs of our drug development candidates. Our drug discovery group utilizes a variety of technologies, including in-licensed technologies, to enable the rapid discovery, optimization and extensive characterization of lead compounds and biotherapeutics such that we are able to select development candidates with the best potential for further evaluation and advancement into clinical development. Drug discovery expenses include license and other collaboration costs primarily composed of upfront license fees, research funding commitments, option exercise fees, development milestones and other payments associated with our in-licensing collaboration programs in preclinical development stage. Other drug discovery costs include personnel expenses, consulting and outside services and laboratory supplies. Other research and development expenses include the allocation of general corporate costs to research and development services and development cost reimbursements in connection with certain of our collaboration arrangements.

Previous wording

The increase in research and development expenses for the year ended December 31, 2023, as compared to 2022, was primarily related to manufacturing costs to support Exelixis’ development candidates (presented as part of other development costs), personnel expenses, clinical trial costs and other research and development expenses, partially offset by decreases in license and other collaboration costs and stock-based compensation expense. Personnel expenses increased primarily due to an increase in headcount to support our discovery and development organization. Clinical trial costs, which include services performed by third-party contract research organizations and other vendors who support our clinical trials, increased primarily due to higher costs associated with studies evaluating zanzalintinib and XB002, partially offset by decreases in costs associated with cabozantinib studies. Other research and development costs increased primarily related to technology costs, including our investments in digital transformation initiatives to support productivity and efficiency in our organization, and an increase in facility expenses. License and other collaboration costs decreased primarily due to lower upfront payments from new in-licensing collaboration arrangements, partially offset by higher development milestone achievement. Stock-based compensation expense decreased primarily due to higher forfeitures.

Current wording

Development-related license and other collaboration costs decreased for the year ended December 31, 2024, as compared to 2023, primarily due to an $80.0 million upfront payment made upon the execution of the exclusive license agreement with Insilico in 2023, partially offset by development milestone achievement in our clinical-stage in-licensing collaboration programs. Drug discovery-related license and other collaboration costs decreased for the year ended December 31, 2024, as compared to 2023, primarily due to lower development milestone achievement in our preclinical development stage in-licensing collaboration programs, lower upfront fees and lower research funding. Other drug discovery costs decreased for the year ended December 31, 2024, as compared to 2023, primarily due to decreases in personnel expenses, consulting and outside services, and laboratory supplies. Clinical trial costs, which include services performed by third-party contract research organizations and other vendors who support our clinical trials, increased for year ended December 31, 2024, as compared to 2023, primarily due to higher costs associated with studies evaluating zanzalintinib, XB010, XL309 and XL495, partially offset by lower costs associated with cabozantinib studies.

Previous wording

We project that clinical trial costs may continue to increase with higher costs associated with various studies evaluating zanzalintinib, XB002 and XL309, partially offset by decreases in costs associated with cabozantinib studies. We continue our development efforts with cabozantinib to maximize the therapeutic and commercial potential of this compound. Notable ongoing company-sponsored cabozantinib studies include: CONTACT-02, for which Roche is sharing the development costs and providing atezolizumab free of charge; and COSMIC-313, for which BMS is providing nivolumab and ipilimumab free of charge.

Current wording

We project that clinical trial costs may continue to increase with higher costs associated with various studies evaluating zanzalintinib, XL309, XL495, and XB628, partially offset by decreases in costs associated with cabozantinib and XB002.

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Current report — wording carried from elsewhere

The FDA first approved CABOMETYX in the U.S. as a monotherapy for previously treated patients with advanced RCC in April 2016, and then for previously untreated patients with advanced RCC in December 2017. In January 2021, the CABOMETYX label was expanded to include first-line advanced RCC in combination with nivolumab, which was the first CABOMETYX regimen approved for treatment in combination with an ICI. In addition to RCC, in January 2019, the FDA approved CABOMETYX for the treatment of patients with HCC previously treated with sorafenib, and then in September 2021, the FDA approved CABOMETYX for the treatment of adult and pediatric patients 12 years of age and older with locally advanced or metastatic DTC that has progressed following prior VEGF receptor-targeted therapy and who are RAI-refractory or ineligible.

Current report — wording carried from elsewhere

Beyond these assets, we continue to make progress on multiple lead optimization programs for inhibitors of a variety of targets that we believe play significant roles in tumor growth, and we anticipate that some of these other programs could reach development candidate status in 2025 and beyond.

Current report — wording carried from elsewhere

Even if the required regulatory approvals to market CABOMETYX for additional indications are achieved, we and our collaboration partners may not be able to commercialize CABOMETYX effectively and successfully in these additional indications. In addition, CABOMETYX will only continue to be commercially successful if private third-party and government payers continue to provide coverage and reimbursement. As is the case for all innovative pharmaceutical therapies, obtaining and maintaining coverage and reimbursement for CABOMETYX is becoming increasingly difficult, both within the U.S. and in foreign markets. In addition, healthcare policymakers in the U.S. continue to express concern over healthcare costs, and corresponding legislative and policy initiatives and activities have been launched aimed at increasing the healthcare cost burdens borne by pharmaceutical manufacturers, as well as expanding access to, and restricting the prices and growth in prices of, pharmaceuticals.

Current report — wording carried from elsewhere

The decrease in research and development expenses for the year ended December 31, 2024, as compared to 2023, was primarily related to decreases in license and other collaboration costs and other drug discovery costs, partially offset by an increase in other development costs, primarily related to manufacturing costs to support Exelixis’ development candidates and clinical trial costs.

Current report — wording carried from elsewhere

Restructuring expenses were as follows (dollars in thousands):
Rearranged previous paragraphs (2)

Previous report — wording carried elsewhere

We have adopted a 52- or 53-week fiscal year policy that generally ends on the Friday closest to December 31st. 2024 will be a 53-week fiscal year as compared to 52-week fiscal years for 2023, 2022 and 2021. Accordingly, the 53-week fiscal year in 2024 may result in a modest increase in revenues and expenses, as compared to 2023, 2022 and 2021.

Previous report — wording carried elsewhere

The timing of cash generated from commercial collaborations and cash payments required for in-licensing collaborations relative to upfront license fee payments, research funding commitments, cost reimbursements, exercise of option payments and other contingent payments such as development milestone payments may vary from period to period.