Gilead Sciences (Nasdaq: GILD) is doubling down on cell therapy. The Foster City–based biopharma announced it will acquire Arcellx (Nasdaq: ACLX) in a transaction valued at approximately $7.8 billion in equity value, giving Gilead full control of anitocabtagene autoleucel (anito-cel), an investigational BCMA-directed CAR T-cell therapy for multiple myeloma.
Kite, a Gilead company, has partnered with Arcellx since 2022 to co-develop and co-commercialize anito-cel. Under the new agreement, Gilead will acquire all outstanding shares of Arcellx it does not already own for $115 per share in cash, plus one non-transferable contingent value right (CVR) worth $5 per share if cumulative global net sales of anito-cel reach $6.0 billion from launch through year-end 2029.
The $115 cash component represents a 68% premium to Arcellx’s 30-day volume-weighted average share price as of February 20, 2026. Gilead already owns approximately 11.5% of Arcellx’s outstanding common stock. The transaction, approved by both companies’ boards, is expected to close in the second quarter of 2026, subject to customary conditions including the tender of a majority of outstanding shares, regulatory approvals and other standard closing requirements.
If completed, the acquisition would eliminate profit-sharing, milestone payments and royalty obligations tied to the existing collaboration, streamlining economics as Gilead prepares for potential commercialization.
The timing is notable. The U.S. Food and Drug Administration has accepted the Biologics License Application (BLA) for anito-cel as a fourth-line treatment for adult patients with relapsed or refractory multiple myeloma. The application is supported by results from a Phase 1 study and the pivotal Phase 2 iMMagine1 trial. The FDA has set a Prescription Drug User Fee Act (PDUFA) target action date of December 23, 2026.
In clinical studies to date, anito-cel has demonstrated deep and durable responses with a predictable and manageable safety profile, according to company disclosures. Multiple myeloma remains an area of high unmet need, particularly among heavily pretreated patients who often face diminishing responses, increasing toxicity and fewer therapeutic options over time.
Full ownership provides Gilead with greater flexibility to align development strategy, scale manufacturing through Kite, and potentially explore expansion into earlier lines of therapy, subject to clinical outcomes and regulatory review.
Beyond anito-cel, Gilead is also acquiring Arcellx’s D-Domain CAR platform, which has generated proprietary target-binding domains designed to improve specificity and binding affinity. The platform may support future CAR T-cell programs, bispecific constructs and in vivo cell therapy approaches, further strengthening Gilead’s oncology pipeline.
Management indicated that, upon FDA approval of anito-cel, the proposed transaction is expected to be accretive to earnings per share in 2028 and thereafter.
For investors, the acquisition highlights a broader trend in large-cap biotech capital deployment. Established companies are increasingly seeking full ownership of late-stage oncology assets to simplify economics, reduce long-term partnership obligations and consolidate strategic control ahead of potential commercialization milestones.
Cell therapy remains one of the most capital-intensive areas of oncology, requiring specialized manufacturing, logistics and commercial infrastructure. Gilead’s move signals confidence in both the asset and its ability to integrate development and commercialization within its existing cell therapy platform.
The next key inflection point will be the FDA’s review decision later this year, which will shape the commercial trajectory of anito-cel and the long-term impact of the acquisition.