Sensei Biotherapeutics, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Cambrian BioPharma Inc | — | Option Exercise | 395 | $6.40 | $2,528 | 155,983 | Dec 9, 2025 |
| Peyer James | — | Option Exercise | 395 | $6.40 | $2,528 | 155,983 | Dec 9, 2025 |
| Cambrian BioPharma Inc | — | Sale | 1,745 | $12.29 | $21,446 | 161,401 | Dec 5, 2025 |
| Peyer James | — | Sale | 5,000 | $9.06 | $45,300 | 177,654 | Dec 5, 2025 |
| Celebi John | PRESIDENT AND CEO | Tax Withholding | 5,558 | $0.48 | $2,668 | 105,862 | Feb 19, 2025 |
| van der Horst Edward | CHIEF SCIENTIFIC OFFICER | Tax Withholding | 2,276 | $0.48 | $1,092 | 59,794 | Feb 19, 2025 |
| van der Horst Edward | CHIEF SCIENTIFIC OFFICER | Tax Withholding | 2,843 | $0.79 | $2,246 | 56,070 | Feb 15, 2024 |
| Celebi John | PRESIDENT AND CEO | Tax Withholding | 5,891 | $0.79 | $4,654 | 105,420 | Feb 15, 2024 |
| Colgan Erin | CHIEF FINANCIAL OFFICER | Tax Withholding | 3,627 | $0.79 | $2,865 | 67,462 | Feb 15, 2024 |
| Celebi John | President and CEO | Purchase | 500 | $0.85 | $425 | 111,311 | Sep 11, 2023 |
| Cambrian BioPharma Inc | — | Disposition | 1,587,302 | $1.26 | $2,000,001 | 3,653,120 | Jul 31, 2023 |
| Peyer James | — | Disposition | 1,587,302 | $1.26 | $2,000,001 | 3,653,120 | Jul 31, 2023 |
| RINGO WILLIAM R | — | Award / Grant | 4,466 | — | — | 23,399 | Jul 10, 2023 |
| RICKS THOMAS G | — | Award / Grant | 4,466 | — | — | 8,932 | Jul 10, 2023 |
| Broder Samuel | — | Award / Grant | 4,466 | — | — | 8,932 | Jul 10, 2023 |
| Humer Kristian | — | Award / Grant | 4,466 | — | — | 8,932 | Jul 10, 2023 |
| English Jessie | — | Award / Grant | 4,466 | — | — | 8,932 | Jul 10, 2023 |
| Vojta Deneen | — | Award / Grant | 4,466 | — | — | 8,932 | Jul 10, 2023 |
| Holmen Bob | — | Award / Grant | 4,466 | — | — | 25,598 | Jul 10, 2023 |
| Peyer James | — | Award / Grant | 4,466 | — | — | 5,240,422 | Jul 10, 2023 |
| Cambrian BioPharma Inc | — | Award / Grant | 4,466 | — | — | 5,240,422 | Jul 10, 2023 |
| Angermayer Christian | — | Sale | 2,485,923 | $1.58 | $3,927,758 | — | Jun 1, 2023 |
| Apeiron Investment Group Ltd. | — | Purchase | 1,100 | $1.60 | $1,760 | 2,485,923 | Feb 23, 2023 |
| Colgan Erin | Chief Financial Officer | Award / Grant | 30,046 | — | — | 57,732 | Feb 15, 2023 |
| Celebi John | President and CEO | Award / Grant | 51,893 | — | — | 110,003 | Feb 15, 2023 |
| Gallagher Patrick Stephen | Chief Business Officer | Award / Grant | 29,313 | — | — | 29,313 | Feb 15, 2023 |
| van der Horst Edward | Chief Scientific Officer | Award / Grant | 17,700 | — | — | 62,438 | Feb 15, 2023 |
| Colgan Erin | Chief Financial Officer | Award / Grant | 21,300 | — | — | 73,032 | Feb 15, 2023 |
| Gallagher Patrick Stephen | Chief Business Officer | Award / Grant | 14,200 | — | — | 43,515 | Feb 15, 2023 |
| Celebi John | President and CEO | Award / Grant | 51,893 | — | — | 106,007 | Feb 15, 2023 |
| Gallagher Patrick Stephen | Chief Business Officer | Tax Withholding | 9,383 | $1.50 | $14,075 | 34,130 | Feb 15, 2023 |
| van der Horst Edward | Chief Scientific Officer | Tax Withholding | 9,525 | $1.50 | $14,288 | 52,913 | Feb 15, 2023 |
| Celebi John | President and CEO | Tax Withholding | 20,492 | $1.50 | $30,738 | 110,811 | Feb 15, 2023 |
| Colgan Erin | Chief Financial Officer | Tax Withholding | 10,943 | $1.50 | $16,415 | 68,089 | Feb 15, 2023 |
| Cambrian BioPharma Inc | — | Award / Grant | 4,466 | — | — | 5,235,956 | Jun 10, 2022 |
| Cambrian BioPharma Inc | — | Award / Grant | 4,466 | — | — | 5,235,954 | Jun 10, 2022 |
| Peyer James | — | Award / Grant | 4,466 | — | — | 5,235,954 | Jun 10, 2022 |
| Vojta Deneen | — | Award / Grant | 4,466 | — | — | 4,466 | Jun 10, 2022 |
| English Jessie | — | Award / Grant | 4,466 | — | — | 4,466 | Jun 10, 2022 |
| RICKS THOMAS G | — | Award / Grant | 4,466 | — | — | 4,466 | Jun 10, 2022 |
| Humer Kristian | — | Award / Grant | 4,466 | — | — | 4,466 | Jun 10, 2022 |
| Broder Samuel | — | Award / Grant | 4,466 | — | — | 4,466 | Jun 10, 2022 |
| Holmen Bob | — | Award / Grant | 4,466 | — | — | 21,132 | Jun 10, 2022 |
| Peyer James | — | Award / Grant | 4,466 | — | — | 5,235,956 | Jun 10, 2022 |
| RINGO WILLIAM R | — | Award / Grant | 10,000 | — | — | 18,933 | Mar 8, 2022 |
| Cambrian BioPharma Inc | — | Purchase | 1,203 | $3.20 | $3,850 | 5,231,989 | Mar 2, 2022 |
| Peyer James | — | Purchase | 1,203 | $3.20 | $3,850 | 5,231,989 | Mar 2, 2022 |
| Peyer James | — | Purchase | 1,203 | $3.20 | $3,850 | 5,231,488 | Mar 2, 2022 |
| Cambrian BioPharma Inc | — | Purchase | 1,203 | $3.20 | $3,850 | 5,231,488 | Mar 2, 2022 |
| Peyer James | — | Purchase | 42 | $3.60 | $151 | 5,228,328 | Mar 1, 2022 |