Institutional HoldersBeta
Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.
Share classes (cover page of the 10-Q filed 2026-08-13, as of 2026-08-05)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | CELC · NASDAQ | 48,931,908 | 56,985,890 | 116.5% | 273 | 15102K100 |
Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.
Top holders (19 of 19 · 15102KAA8)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | Linden Advisors LP | 112,901,000 | — | $254.5M | +20,186,000 (+21.8%) |
| 2 | BAKER BROS. ADVISORS LP | 30,750,000 | — | $69.2M | — |
| 3 | Context Capital Management, LLC | 15,970,000 | — | $36.0M | +1,000,000 (+6.7%) |
| 4 | CAPSTONE INVESTMENT ADVISORS, LLC | 7,000,000 | — | $15.8M | +6,000,000 (+600.0%) |
| 5 | PERCEPTIVE ADVISORS LLC | 6,500,000 | — | $14.6M | — |
| 6 | CSS LLC/IL | 5,310,000 | — | $11.9M | -1,000,000 (-15.8%) |
| 7 | FMR LLC | 2,256,000 | — | $5.1M | -10,000 (-0.4%) |
| 8 | WOLVERINE ASSET MANAGEMENT LLC | 2,114,000 | — | $4.8M | NEW |
| 9 | Acasta Partners UK LLP | 2,000,000 | — | $4.5M | -2,000,000 (-50.0%) |
| 10 | BNP PARIBAS FINANCIAL MARKETS | 1,668,000 | — | $3.7M | NEW |
| 11 | ADVENT CAPITAL MANAGEMENT /DE/ | 980,000 | — | $2.2M | — |
| 12 | JPMORGAN CHASE & CO | 922,000 | — | $2.0M | +320,000 (+53.2%) |
| 13 | LAZARD ASSET MANAGEMENT LLC | 832,000 | — | $19K | NEW |
| 14 | AGF MANAGEMENT LTD | 600,000 | — | $1.3M | — |
| 15 | GOLDMAN SACHS GROUP INC | 409,000 | — | $919K | — |
| 16 | MILLENNIUM MANAGEMENT LLC | 350,000 | — | $789K | — |
| 17 | Kohlberg Kravis Roberts & Co. L.P. | 153,000 | — | $345K | -132,000 (-46.3%) |
| 18 | Ares Systematic Credit Ltd | 100,000 | — | $225K | — |
| 19 | SG Americas Securities, LLC | 4,200 | — | $943K | — |
Exited since 2026-03-31 (8 filers; largest 8 shown)
| Jump Financial, LLC | −9,504,000 |
| DeepCurrents Investment Group LLC | −6,000,000 |
| LORD, ABBETT & CO. LLC | −5,936,000 |
| SSI INVESTMENT MANAGEMENT LLC | −3,206,000 |
| Affinity Asset Advisors, LLC | −3,000,000 |
| Polar Capital Holdings Plc | −750,000 |
| OAKTREE CAPITAL MANAGEMENT LP | −600,000 |
| Central Pacific Bank - Trust Division | −153,000 |
Large holders from 13D/13G (latest per reporting person, last 2 years)
Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.
| Reporting person | Form | Filed | Event | Shares | % of class |
|---|---|---|---|---|---|
| BANK OF AMERICA CORP /DE/ | SCHEDULE 13G | 2026-08-11 | 2026-06-30 | 3,170,198 | 6.5% |
| Felix J. Baker | SCHEDULE 13G | 2026-07-16 | 2026-07-14 | 4,877,963 | 9.99% |
| Julian C. Baker | SCHEDULE 13G | 2026-07-16 | 2026-07-14 | 4,877,963 | 9.99% |
| Baker Bros. Advisors (GP) LLC | SCHEDULE 13G | 2026-07-16 | 2026-07-14 | 4,877,963 | 9.99% |
| Baker Bros. Advisors LP | SCHEDULE 13G | 2026-07-16 | 2026-07-14 | 4,877,963 | 9.99% |
| Roderick Wong | SCHEDULE 13G | 2026-05-15 | 2026-03-31 | 3,039,621 | 6.3% |
| RTW Investments, LP | SCHEDULE 13G | 2026-05-15 | 2026-03-31 | 3,039,621 | 6.3% |
| Rick Yang | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| Edward T. Mathers | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| Ali Behbahani | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| Paul Walker | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| NEA Partners 18 VGE, L.P. | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| NEA 18 VGE GP, LLC | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| NEA 18 Venture Growth Equity, L.P. | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| Mohamad H. Makhzoumi | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| Scott D. Sandell | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| Growth Equity Opportunities 18 VGE, LLC | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| Anthony A. Florence, Jr. | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| Carmen Chang | SCHEDULE 13D/A | 2026-03-09 | 2026-03-05 | 2,285,561 | 4.9% |
| Perceptive Life Sciences Master Fund, Ltd. | SCHEDULE 13G/A | 2026-02-17 | 2025-12-31 | 3,160,200 | 6.8% |
| Joseph Edelman | SCHEDULE 13G/A | 2026-02-17 | 2025-12-31 | 3,160,200 | 6.8% |
| Behzad Aghazadeh | SCHEDULE 13G | 2026-02-17 | 2025-12-31 | 3,111,111 | 6.72% |
| Avoro Capital Advisors LLC | SCHEDULE 13G | 2026-02-17 | 2025-12-31 | 3,111,111 | 6.72% |
| Perceptive Advisors LLC | SCHEDULE 13G/A | 2026-02-17 | 2025-12-31 | 3,160,200 | 6.8% |
| Soleus GP, LLC | SCHEDULE 13G/A | 2026-02-12 | 2025-12-31 | 1,806,874 | 3.9% |
| Guy Levy | SCHEDULE 13G/A | 2026-02-12 | 2025-12-31 | 1,808,258 | 3.9% |
| Soleus PE GP II, LLC | SCHEDULE 13G/A | 2026-02-12 | 2025-12-31 | 142,118 | 0.3% |
| Soleus Capital Master Fund, L.P. | SCHEDULE 13G/A | 2026-02-12 | 2025-12-31 | 1,664,756 | 3.6% |
| Soleus Capital Management, L.P. | SCHEDULE 13G/A | 2026-02-12 | 2025-12-31 | 1,806,874 | 3.9% |
| Soleus Capital, LLC | SCHEDULE 13G/A | 2026-02-12 | 2025-12-31 | 1,664,756 | 3.6% |
| Soleus Capital Group, LLC | SCHEDULE 13G/A | 2026-02-12 | 2025-12-31 | 1,664,756 | 3.6% |
| Soleus Private Equity Fund II, L.P. | SCHEDULE 13G/A | 2026-02-12 | 2025-12-31 | 142,118 | 0.3% |
| Soleus Private Equity GP II, LLC | SCHEDULE 13G/A | 2026-02-12 | 2025-12-31 | 142,118 | 0.3% |
| LAMPERT MARK N | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 658,421 | 1.6% |
| BVF II GP LLC | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 268,775 | 0.6% |
| BVF Partners OS Ltd. | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 36,270 | 0.09% |
| Biotechnology Value Trading Fund OS LP | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 36,270 | 0.09% |
| BVF PARTNERS L P/IL | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 658,421 | 1.6% |
| BIOTECHNOLOGY VALUE FUND L P | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 340,278 | 0.8% |
| BIOTECHNOLOGY VALUE FUND II LP | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 268,775 | 0.6% |
| BVF GP HOLDINGS LLC | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 609,053 | 1.4% |
| BVF I GP LLC | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 340,278 | 0.8% |
| BVF INC/IL | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 658,421 | 1.6% |
| Lance G. Laing | SCHEDULE 13G/A | 2025-11-13 | 2025-09-30 | 1,568,766 | 3.6% |
| Brian F. Sullivan | SCHEDULE 13G/A | 2025-11-13 | 2025-09-30 | 4,013,203 | 9.1% |
| Liza Landsman | SCHEDULE 13D/A | 2025-08-18 | 2025-08-14 | 0 | 0% |
| Peter W. Sonsini | SCHEDULE 13D/A | 2025-08-18 | 2025-08-14 | 0 | 0% |
| Commodore Capital Master LP | SCHEDULE 13G/A | 2025-02-14 | 2024-12-31 | 1,095,650 | 2.9% |
| COMMODORE CAPITAL LP | SCHEDULE 13G/A | 2025-02-14 | 2024-12-31 | 1,095,650 | 2.9% |
| Soleus GP LLC | SCHEDULE 13G/A | 2025-02-11 | 2024-12-31 | 3,797,871 | 9.9% |
| BlackRock, Inc. | SCHEDULE 13G | 2025-02-04 | 2024-12-31 | 2,179,064 | 5.9% |
Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.