2026Q1
| Insider | Role (last 12 mo) | Shares held | Filed at |
|---|---|---|---|
| Bvf Partners L P/Il | — | 19,630,934 | Feb 7, 2022 |
| Biotechnology Value Fund L P | — | 19,630,934 | Feb 7, 2022 |
| Bvf I Gp Llc | — | 19,630,934 | Feb 7, 2022 |
| Biotechnology Value Fund II Lp | — | 19,630,934 | Feb 7, 2022 |
| Bvf II Gp Llc | — | 19,630,934 | Feb 7, 2022 |
| Exec date | Filing date | Insider | Role | Signal | Confidence | Shares | % of shares | Under plan? | Amount (USD) |
|---|---|---|---|---|---|---|---|---|---|
| Feb 4, 2026 | Feb 5, 2026 | Paterson Dan | CEO | Sell | 52.5 | -970 | -0.16% | ✗ | $6.5K |
| Jan 21, 2026 | Jan 23, 2026 | Calkins Daniel | CFO | Neutral | 90.0 | +16,665 | 15.91% | ✗ | - |
| Jan 21, 2026 | Jan 23, 2026 | Paterson Dan | CEO | Neutral | 90.0 | +213,785 | 53.43% | ✗ | - |
| Jan 12, 2026 | Jan 14, 2026 | Paterson Dan | CEO | Sell | 22.5 | -10,321 | -2.51% | ✗ | $73.9K |
| Jan 12, 2026 | Jan 14, 2026 | Calkins Daniel | CFO | Sell | 26.3 | -5,039 | -4.59% | ✗ | $36.1K |
| Jan 6, 2026 | Jan 8, 2026 | Kauffman Michael | President | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Dec 24, 2025 | Dec 29, 2025 | Calkins Daniel | CFO | Sell | 52.5 | -80 | -0.07% | ✗ | $628.8 |
| Dec 16, 2025 | Dec 18, 2025 | Stuglik Brian M | Director | Sell | 37.5 | -592 | -0.58% | ✗ | $5.4K |
| Dec 16, 2025 | Dec 18, 2025 | Paterson Dan | CEO | Sell | 52.5 | -393 | -0.10% | ✗ | $3.6K |
| Dec 16, 2025 | Dec 18, 2025 | Gagnon Robert E. | Director | Sell | 37.5 | -283 | -0.67% | ✗ | $2.6K |
| Dec 10, 2025 | Dec 12, 2025 | Paterson Dan | CEO | Sell | 51.3 | -4,000 | -0.96% | ✓ | $40.1K |
| Dec 5, 2025 | Dec 9, 2025 | Paterson Dan | CEO | Sell | 45.0 | -6,000 | -1.43% | ✓ | $62.7K |
| Dec 2, 2025 | Dec 4, 2025 | Paterson Dan | CEO | Sell | 45.0 | -6,000 | -1.41% | ✓ | $60.6K |
| Nov 26, 2025 | Dec 1, 2025 | Paterson Dan | CEO | Sell | 45.0 | -6,000 | -1.39% | ✓ | $63K |
| Nov 21, 2025 | Nov 25, 2025 | Bunn Paul A. | Director | Sell | 10.0 | -6,250 | -75.00% | ✓ | $62.5K |
| Nov 21, 2025 | Nov 25, 2025 | Kauffman Michael | Director | Sell | 10.0 | -8,550 | -49.66% | ✓ | $85.5K |
| Nov 21, 2025 | Nov 25, 2025 | Paterson Dan | CEO | Sell | 45.0 | -6,000 | -1.37% | ✓ | $60K |
| Nov 3, 2025 | Nov 6, 2025 | Paterson Dan | CEO | Sell | 51.3 | -3,299 | -0.75% | ✓ | $32.1K |
| Oct 9, 2025 | Oct 14, 2025 | Bunn Paul A. | Director | Sell | 10.0 | -8,333 | -50.00% | ✓ | $75.5K |
| Sep 22, 2025 | Sep 24, 2025 | Calkins Daniel | CFO | Sell | 52.5 | -82 | -0.07% | ✗ | $748.3 |
| Sep 16, 2025 | Sep 18, 2025 | Stuglik Brian M | Director | Sell | 37.5 | -587 | -0.57% | ✗ | $5.9K |
| Sep 16, 2025 | Sep 18, 2025 | Gagnon Robert E. | Director | Sell | 37.5 | -281 | -0.67% | ✗ | $2.8K |
| Sep 16, 2025 | Sep 18, 2025 | Paterson Dan | CEO | Sell | 52.5 | -390 | -0.09% | ✗ | $3.9K |
| Aug 6, 2025 | Aug 6, 2025 | Paterson Dan | CEO | Sell | 45.0 | -1,332 | -0.30% | ✗ | $7.7K |
| Jun 20, 2025 | Jun 24, 2025 | Paterson Dan | CEO | Sell | 22.5 | -17,808 | -3.86% | ✗ | $91.4K |
| Jun 20, 2025 | Jun 24, 2025 | Calkins Daniel | CFO | Sell | 26.3 | -4,135 | -3.63% | ✗ | $21.2K |
| Jun 16, 2025 | Jun 20, 2025 | Paterson Dan | CEO | Sell | 52.5 | -335 | -0.07% | ✗ | $1.9K |
| Jun 16, 2025 | Jun 20, 2025 | Gagnon Robert E. | Director | Sell | 37.5 | -284 | -0.67% | ✗ | $1.6K |
| Jun 16, 2025 | Jun 20, 2025 | Stuglik Brian M | Director | Sell | 37.5 | -594 | -0.58% | ✗ | $3.4K |
| May 22, 2025 | May 27, 2025 | ROBERTSON MICHELLE | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| May 22, 2025 | May 27, 2025 | Bunn Paul A. | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| May 22, 2025 | May 27, 2025 | Kapur Anil | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| May 22, 2025 | May 27, 2025 | Stuglik Brian M | Director | Neutral | 85.0 | +8,333 | 8.81% | ✗ | - |
| May 22, 2025 | May 27, 2025 | Gagnon Robert E. | Director | Neutral | 90.0 | +8,333 | 24.37% | ✗ | - |
| May 22, 2025 | May 27, 2025 | Kauffman Michael | Director | Neutral | 90.0 | +8,333 | 93.81% | ✗ | - |
| May 22, 2025 | May 27, 2025 | Tollefson Karin Anna | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| May 22, 2025 | May 27, 2025 | JOHNSON JOHN | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| May 22, 2025 | May 27, 2025 | Rowinsky Eric K | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| May 16, 2025 | May 20, 2025 | Calkins Daniel | CFO | Sell | 22.5 | -49,993 | -30.47% | ✗ | $90.6K |
| May 16, 2025 | May 20, 2025 | Paterson Dan | CEO | Sell | 20.0 | -233,677 | -14.72% | ✗ | $477K |
| May 5, 2025 | May 7, 2025 | Paterson Dan | CEO | Sell | 45.0 | -820 | -0.24% | ✗ | $6K |
| Apr 1, 2025 | Apr 3, 2025 | Ros Matthew | COO | Neutral | 90.0 | +50,000 | 100.00% | ✗ | - |
| Mar 20, 2025 | Mar 24, 2025 | Calkins Daniel | CFO | Sell | 52.5 | -91 | -0.11% | ✗ | $630.9 |
| Mar 17, 2025 | Mar 19, 2025 | Paterson Dan | CEO | Sell | 52.5 | -244 | -0.07% | ✗ | $1.7K |
| Mar 17, 2025 | Mar 19, 2025 | Gagnon Robert E. | Director | Sell | 37.5 | -284 | -0.82% | ✗ | $2K |
| Mar 17, 2025 | Mar 19, 2025 | Stuglik Brian M | Director | Sell | 37.5 | -593 | -0.62% | ✗ | $4.1K |
| Feb 4, 2025 | Feb 5, 2025 | Paterson Dan | CEO | Sell | 45.0 | -858 | -0.25% | ✗ | $4.9K |
| Jan 21, 2025 | Ros Matthew | COO | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Jan 10, 2025 | Jan 14, 2025 | Paterson Dan | CEO | Sell | 91.3 | +116,432 | 50.37% | ✗ | $44.9K |
| Jan 10, 2025 | Jan 14, 2025 | Calkins Daniel | CFO | Neutral | 90.0 | +38,800 | 81.45% | ✗ | - |
| Jan 6, 2025 | Jan 8, 2025 | Calkins Daniel | CFO | Sell | 52.5 | -6 | -0.01% | ✗ | $41.6 |
| Dec 20, 2024 | Dec 26, 2024 | Calkins Daniel | CFO | Sell | 52.5 | -93 | -0.20% | ✗ | $391.6 |
| Dec 16, 2024 | Dec 20, 2024 | Gagnon Robert E. | Director | Sell | 27.5 | -415 | -1.19% | ✗ | $1.9K |
| Dec 16, 2024 | Dec 20, 2024 | Stuglik Brian M | Director | Sell | 37.5 | -929 | -0.97% | ✗ | $4.2K |
| Dec 16, 2024 | Dec 20, 2024 | Paterson Dan | CEO | Sell | 52.5 | -427 | -0.18% | ✗ | $1.9K |
| Nov 5, 2024 | Nov 7, 2024 | Paterson Dan | CEO | Sell | 45.0 | -812 | -0.35% | ✗ | $3.1K |
| Oct 7, 2024 | Oct 9, 2024 | Calkins Daniel | CFO | Sell | 52.5 | -6 | -0.01% | ✗ | $17.2 |
| Sep 20, 2024 | Sep 24, 2024 | Calkins Daniel | CFO | Sell | 52.5 | -93 | -0.20% | ✗ | $257 |
| Sep 19, 2024 | Sep 20, 2024 | Gagnon Robert E. | Director | Sell | 45.0 | -131 | -0.37% | ✗ | $365.5 |
| Sep 19, 2024 | Sep 20, 2024 | Paterson Dan | CEO | Sell | 52.5 | -184 | -0.08% | ✗ | $513.4 |
| Sep 19, 2024 | Sep 20, 2024 | Stuglik Brian M | Director | Sell | 45.0 | -336 | -0.35% | ✗ | $937.4 |
| Sep 16, 2024 | Sep 18, 2024 | Gagnon Robert E. | Director | Sell | 37.5 | -287 | -0.81% | ✗ | $803.6 |
| Sep 16, 2024 | Sep 18, 2024 | Stuglik Brian M | Director | Sell | 37.5 | -600 | -0.62% | ✗ | $1.7K |
| Sep 16, 2024 | Sep 18, 2024 | Paterson Dan | CEO | Sell | 52.5 | -246 | -0.11% | ✗ | $688.8 |
| Aug 5, 2024 | Aug 7, 2024 | Paterson Dan | CEO | Sell | 27.5 | -3,245 | -1.37% | ✗ | $7K |
| Jul 9, 2024 | Jul 11, 2024 | Calkins Daniel | CFO | Sell | 52.5 | -7 | -0.01% | ✗ | $18.3 |
| Jun 24, 2024 | Jun 26, 2024 | Calkins Daniel | CFO | Sell | 52.5 | -28 | -0.06% | ✗ | $88.2 |
| Jun 18, 2024 | Jun 20, 2024 | Bunn Paul A. | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| Jun 18, 2024 | Jun 20, 2024 | Rowinsky Eric K | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| Jun 18, 2024 | Jun 20, 2024 | Kapur Anil | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| Jun 18, 2024 | Jun 20, 2024 | ROBERTSON MICHELLE | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| Jun 18, 2024 | Jun 20, 2024 | Calkins Daniel | CFO | Sell | 90.0 | +38,783 | 454.40% | ✗ | $211.7 |
| Jun 18, 2024 | Jun 20, 2024 | Kauffman Michael | Director | Neutral | 90.0 | +8,333 | 1515.09% | ✗ | - |
| Jun 17, 2024 | Jun 20, 2024 | Gagnon Robert E. | Director | Sell | 90.0 | +7,919 | 28.91% | ✗ | $1.4K |
| Jun 18, 2024 | Jun 20, 2024 | Tollefson Karin Anna | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| Jun 17, 2024 | Jun 20, 2024 | Paterson Dan | CEO | Sell | 90.0 | +149,573 | 172.94% | ✗ | $1.4K |
| Jun 17, 2024 | Jun 20, 2024 | Stuglik Brian M | Director | Sell | 85.0 | +7,405 | 8.26% | ✗ | $3.1K |
| Jun 18, 2024 | Jun 20, 2024 | JOHNSON JOHN | Director | Neutral | 90.0 | +8,333 | 100.00% | ✗ | - |
| Apr 5, 2024 | Apr 8, 2024 | Calkins Daniel | CFO | Sell | 52.5 | -6 | -0.07% | ✗ | $65.2 |
| Mar 25, 2024 | Mar 27, 2024 | Calkins Daniel | CFO | Sell | 45.0 | -25 | -0.29% | ✗ | $300.5 |
| Mar 20, 2024 | Mar 21, 2024 | Calkins Daniel | CFO | Sell | 37.5 | -55 | -0.64% | ✗ | $608.9 |
| Mar 18, 2024 | Mar 20, 2024 | Gagnon Robert E. | Director | Sell | 27.5 | -413 | -1.49% | ✗ | $4.4K |
| Mar 18, 2024 | Mar 20, 2024 | Paterson Dan | CEO | Sell | 45.0 | -426 | -0.49% | ✗ | $4.5K |
| Mar 18, 2024 | Mar 20, 2024 | Stuglik Brian M | Director | Sell | 37.5 | -810 | -0.90% | ✗ | $8.6K |
| Mar 11, 2024 | Mar 13, 2024 | Bunn Paul A. | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Mar 11, 2024 | Mar 13, 2024 | Stuglik Brian M | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Mar 11, 2024 | Mar 13, 2024 | Rowinsky Eric K | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Mar 11, 2024 | Mar 13, 2024 | JOHNSON JOHN | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Mar 11, 2024 | Mar 13, 2024 | Paterson Dan | CEO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Mar 11, 2024 | Mar 13, 2024 | Calkins Daniel | CFO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Mar 11, 2024 | Mar 13, 2024 | ROBERTSON MICHELLE | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Mar 11, 2024 | Mar 13, 2024 | Kauffman Michael | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 6, 2024 | Feb 7, 2024 | Gagnon Robert E. | Director | Sell | 15.0 | -9,204 | -24.87% | ✓ | $126.1K |
| Sep 5, 2017 | Jan 24, 2024 | Rowinsky Eric K | Director | Buy | 90.0 | +2,000 | 100.00% | ✗ | $7.7K |
| Jan 12, 2024 | Jan 17, 2024 | Gagnon Robert E. | Director | Sell | 20.0 | -9,204 | -19.92% | ✓ | $100.8K |
| Jan 5, 2024 | Jan 9, 2024 | Calkins Daniel | CFO | Sell | 52.5 | -6 | -0.07% | ✗ | $51 |
| Dec 26, 2023 | Dec 28, 2023 | Calkins Daniel | CFO | Sell | 45.0 | -25 | -0.30% | ✗ | $202 |
| Dec 20, 2023 | Dec 21, 2023 | Calkins Daniel | CFO | Sell | 37.5 | -57 | -0.68% | ✗ | $452 |
| Dec 18, 2023 | Dec 20, 2023 | Gagnon Robert E. | Director | Sell | 37.5 | -414 | -0.89% | ✗ | $3.2K |
| Dec 18, 2023 | Dec 20, 2023 | Paterson Dan | CEO | Sell | 45.0 | -427 | -0.49% | ✗ | $3.3K |