🕵️ Century Therapeutics, Inc. ($IPSC)
SEC insider & ownership activity, last 12 months · CIK 1850119 · every row links its SEC filing
Over the last 12 months insiders sold $77K against $97K of open-market buying. Pfeiffenberger Brent bought $48K in discretionary trades (Sep–Dec). 1 planned sale is pending, the largest $1K (Russotti Gregory). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $97K (3 lots) · 4 sellers, $77K (19 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Pfeiffenberger Brent | 2 | $48K | 2 | $15K | Dec 12, 2025 |
| Cowan Chad | 1 | $49K | 1 | $3K | Dec 22, 2025 |
| Russotti Gregory | 0 | – | 6 | $34K | Jun 12, 2026 |
| Carr Douglas | 0 | – | 10 | $25K | Jun 12, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| RA Capital Management, L.P. | 9.9% | 13G | Jan 16, 2026 | filing ↗ | |
| Peter Kolchinsky | 9.9% | 13G | Jan 16, 2026 | filing ↗ | |
| Rajeev Shah | 9.9% | 13G | Jan 16, 2026 | filing ↗ | |
| RA Capital Healthcare Fund, L.P. | 9.9% | 13G | Jan 16, 2026 | filing ↗ | |
| Chen Yu | 9.9% | 13G | Jan 15, 2026 | filing ↗ | |
| DEEP Track Capital, LP | 7.3% | 13G | Jan 15, 2026 | filing ↗ | |
| David Kroin | 7.3% | 13G | Jan 15, 2026 | filing ↗ | |
| Commodore Capital LP | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| Commodore Capital Master LP | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| Robert Egen Atkinson | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| Michael Kramarz | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| Venrock Healthcare Capital Partners III, L.P. | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| VHCP Co-Investment Holdings III, LLC | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| Venrock Healthcare Capital Partners EG, L.P. | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| VHCP Management III, LLC | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| VHCP Management EG, LLC | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| Nimish Shah | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| Bong Y. Koh | 7.1% | 13G | Jan 16, 2026 | filing ↗ | |
| RTW Investments, LP | 7.1% | 13G | May 15, 2026 | filing ↗ | |
| Roderick Wong | 7.1% | 13G | May 15, 2026 | filing ↗ | |
| DEEP Track Biotechnology Master Fund, Ltd. | 5.8% | 13G | Jan 15, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Russotti Gregory | $6K | Jun 12, 2026 | filing ↗ |
| Russotti Gregory | $1K | Jun 8, 2026 | filing ↗ |
| Russotti Gregory | $26K | Mar 12, 2026 | filing ↗ |
| Russotti Gregory | $1K | Mar 9, 2026 | filing ↗ |
| Pfeiffenberger Brent | $0 | Dec 8, 2025 | filing ↗ |
| Russotti Gregory | $280 | Dec 8, 2025 | filing ↗ |
| Cowan Chad | $3K | Nov 20, 2025 | filing ↗ |
| Pfeiffenberger Brent | $15K | Nov 17, 2025 | filing ↗ |
| Pfeiffenberger Brent | $244 | Sep 8, 2025 | filing ↗ |
| Russotti Gregory | $269 | Sep 8, 2025 | filing ↗ |
| Pfeiffenberger Brent | $18K | Aug 18, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Jun 15, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Jun 11, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 11, 2026 | filing ↗ |
| Other events (8.01) | Jun 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 8, 2026 | filing ↗ |
| Earnings (2.02) | May 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 13, 2026 | filing ↗ |
| Other events (8.01) | Mar 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 26, 2026 | filing ↗ |
| Earnings (2.02) | Mar 12, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 12, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jan 22, 2026 | filing ↗ |
| Other events (8.01) | Jan 22, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 12, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 7, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Jan 7, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 7, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 18, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 12, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 12, 2025 | filing ↗ |
| Officer/director changes (5.02) | Dec 9, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 9, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 9, 2025 | filing ↗ |
| Earnings (2.02) | Nov 13, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 13, 2025 | filing ↗ |
| Other events (8.01) | Nov 13, 2025 | filing ↗ |