CAMP4 THERAPEUTICS CORP CAMP
COM · Common Stock · CUSIP 13463J101
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersWatertown, MA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $4.37.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q4 2024 | 37 |
| Q1 2025 | 40 |
| Q2 2025 | 30 |
| Q3 2025 | 29 |
| Q4 2025 | 40 |
| Q1 2026 | 46 |
| Q2 2026 | 61 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2025 | 18 | 13 |
| Q2 2025 | 13 | 28 |
| Q3 2025 | 12 | 19 |
| Q4 2025 | 23 | 12 |
| Q1 2026 | 26 | 16 |
| Q2 2026 | 37 | 19 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $0 | $0 | — |
| Q4 2025 | $0 | $0 | — |
| Q1 2026 | $64.4k | $0 | 0.00 |
| Q2 2026 | $0 | $0 | — |
Biggest buyers
| BlackRock, Inc. | Added | +1.2m |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +412.8k |
| SummitTX Capital, L.P. | Added | +385.6k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New | +220.7k |
| STATE STREET CORP | Added | +215.4k |
| NORTHERN TRUST CORP | Added | +178.0k |
| GOLDMAN SACHS GROUP INC | Added | +163.0k |
| Birchview Capital, LP | New | +120.0k |
| CANTOR FITZGERALD, L. P. | New | +107.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Added | +76.7k |
Biggest sellers
| ENAVATE SCIENCES GP, LLC | Reduced | -765.4k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold out | -336.0k |
| 683 Capital Management, LLC | Sold out | -108.0k |
| Balyasny Asset Management L.P. | Reduced | -56.7k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -42.0k |
| HRT FINANCIAL LP | Sold out | -30.7k |
| Hudson Bay Capital Management LP | Reduced | -29.9k |
| FMR LLC | Reduced | -29.1k |
| BARCLAYS PLC | Reduced | -27.6k |
| Qube Research & Technologies Ltd | Sold out | -24.8k |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| JANUS HENDERSON GROUP PLC 13G · institution new · filed 2026-01-08 | 12.2% |
| Coastlands Capital LP 13G · institution no change · filed 2025-12-11 | 10.0% |
| 5AM Ventures VI, L.P. 13D · may seek influence no change · filed 2026-08-31 | 9.9% |
| FMR LLC 13G · institution +2.8 pts · filed 2026-02-05 | 9.5% |
| Vivo Opportunity Fund Holdings, L.P. 13G · passive investor -0.2 pts · filed 2026-02-13 | 7.4% |
| Polaris Management Co. VII, L.L.C. 13D · may seek influence -2.1 pts · filed 2026-08-19 | 6.3% |
| Trails Edge Capital Partners, LP 13G · passive investor new · filed 2026-08-10 | 6.0% |
Fell to 5% or below in the last year: BALYASNY ASSET MANAGEMENT L.P. (5.0%, 2026-08-14), Enavate Sciences GP, LLC (4.8%, 2026-03-11), AH Bio Fund I, L.P. (4.5%, 2025-11-14), Northpond Ventures II, LP (4.8%, 2025-11-14)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 2 | $10.0m | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 5 | $2.0m | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 4 | $77.4k | 2 | $2.5m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-31 | Gold Kelly Chief Financial Officer · By Spouse | Bought | $39.6k10.0k shares |
| 2026-08-27 | Schwab Andrew J. Director · By 5AM Ventures VI, L.P. | Sold | $1.6m400.0k shares |
| 2026-08-24 | Schwab Andrew J. Director · By 5AM Ventures VI, L.P. | Sold | $4510 shares |
| 2026-08-21 | Schwab Andrew J. Director · By 5AM Ventures VI, L.P. | Sold | $144.1k32.0k shares |
| 2026-08-20 | Schwab Andrew J. Director · By 5AM Ventures VI, L.P. | Sold | $520.7k114.7k shares |
| 2026-08-19 | Schwab Andrew J. Director · By 5AM Ventures VI, L.P. | Sold | $214.9k45.1k shares |
| 2026-08-19 | Tardiff Daniel Chief Scientific Officer | Sold | $8.3k1.7k shares |
| 2026-08-03 | Young Richard A Director | Bought | $27.0k16.4k shares |
| 2026-08-03 | Mandel-Brehm Josh Chief Executive Officer, director | Bought | $10.8k6.6k shares |
| 2026-08-03 | Gold Kelly Chief Financial Officer | Bought | $10.8k6.6k shares |
| 2026-08-03 | Maricich Yuri Chief Medical Officer | Bought | $10.8k6.6k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| Jupiter Topco LLC 0.01% of their portfolio | 6.3m $27.6m | First filing |
| 5AM Venture Management, LLC 8.91% of their portfolio | 5.9m $25.6m | Unchanged |
| FMR LLC 0.00% of their portfolio | 4.9m $21.4m | Reduced -29.1k |
| Vivo Capital, LLC 1.69% of their portfolio | 4.2m $18.6m | Unchanged |
| Balyasny Asset Management L.P. 0.02% of their portfolio | 2.6m $11.3m | Reduced -56.7k |
| a16z Capital Management, L.L.C. 0.07% of their portfolio | 2.1m $9.3m | Unchanged |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.01% of their portfolio | 2.0m $8.6m | Unchanged |
| Trails Edge Capital Partners, LP 1.34% of their portfolio | 1.9m $8.4m | Reduced -6.6k |
| BlackRock, Inc. 0.00% of their portfolio | 1.6m $7.2m | Added +1.2m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.5m $6.7m | Reduced -1.3k |
| ENAVATE SCIENCES GP, LLC 1.80% of their portfolio | 1.4m $6.2m | Reduced -765.4k |
| Stonepine Capital Management, LLC 4.62% of their portfolio | 1.4m $6.1m | Unchanged |
| HarbourVest Partners LLC 3.27% of their portfolio | 1.3m $5.6m | Unchanged |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 795.7k $3.5m | Added +412.8k |
| SummitTX Capital, L.P. 0.08% of their portfolio | 725.2k $3.2m | Added +385.6k |
| SILVERARC CAPITAL MANAGEMENT, LLC 0.32% of their portfolio | 653.6k $2.9m | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 362.3k $1.6m | Added +215.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 248.7k $1.1m | Added +178.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 241.4k $1.1m | Added +163.0k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 226.1k $987.9k | Added +31.1k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 220.7k $964.5k | New |
| Birchview Capital, LP 0.25% of their portfolio | 120.0k $524.4k | New |
| CANTOR FITZGERALD, L. P. 0.00% of their portfolio | 107.0k $467.6k | New |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 104.6k $457.1k | Reduced -4.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 96.7k $422.4k | Added +76.7k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 83.4k $364.6k | Added +64.7k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 82.5k $360.3k | Unchanged |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 43.9k $191.9k | Reduced -42.0k |
| Nuveen, LLC 0.00% of their portfolio | 42.0k $183.8k | New |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 31.6k $138.0k | New |
| Y-Intercept (Hong Kong) Ltd 0.00% of their portfolio | 30.9k $135.2k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 28.9k $126.1k | New |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 26.3k $116.0k | New |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 25.0k $109.2k | Unchanged |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 24.2k $105.9k | New |
| Invesco Ltd. 0.00% of their portfolio | 22.4k $98.0k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 19.9k $87.0k | New |
| Hudson Bay Capital Management LP 0.00% of their portfolio | 18.7k $81.5k | Reduced -29.9k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 17.8k $77.7k | Reduced -13.4k |
| Quadrature Capital Ltd 0.00% of their portfolio | 15.8k $68.9k | New |
| CITIGROUP INC 0.00% of their portfolio | 15.0k $65.4k | Added +5.1k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 14.6k $63.7k | New |
| MARSHALL WACE, LLP 0.00% of their portfolio | 14.2k $62.0k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 13.1k $58.2k | New |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 11.6k $50.8k | Unchanged |
| UBS Group AG 0.00% of their portfolio | 11.5k $50.4k | Added +2.4k |
| MORGAN STANLEY 0.00% of their portfolio | 11.5k $50.1k | Added +2.0k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 11.1k $48.6k | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 9.7k $42.3k | Added +9.6k |
| BARCLAYS PLC 0.00% of their portfolio | 7.1k $31.0k | Reduced -27.6k |
| Legal & General Group Plc 0.00% of their portfolio | 3.1k $13.5k | New |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 2.9k $12.5k | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 2.5k $11.1k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 1.9k $8.2k | Added +468 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 1.0k $4.0k | Added +773 |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 800 $3.5k | Reduced -15.2k |
| Physician Wealth Advisors, Inc. 0.00% of their portfolio | 242 $1.1k | New |
| Quarry LP 0.00% of their portfolio | 208 $909 | New |
| Sterling Capital Management LLC 0.00% of their portfolio | 111 $485 | New |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 71 $310 | Reduced -3 |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 10 $44 | Unchanged |