Only open-market buys / sells (codes P/S) are a conviction signal; grants, option exercises, tax-withholding, and gifts are compensation mechanics, shown but greyed. The trailing 12-month tallies run to today but the store covers filings through 2026-06-30 only (SEC bulk data sets publish quarterly), so recent activity may be absent.
| Date | Insider | Role | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-27 | Chevallard Daniel R. | Officer | +Buy | 7,500 | $8.57 | $64,275 |
| 2026-03-27 | Schimmelpennink Evert B. | Director,Officer | +Buy | 28,089 | $8.95 | $251,397 |
| 2026-03-27 | George Jeffrey P. | Director | +Buy | 5,592 | $8.92 | $49,881 |
| 2025-11-17 | Olsson Shawn | Officer | −Sell | 5,788 | $26.37 | $152,630 |
| 2025-11-17 | Olsson Shawn | Officer | −Sell | 4,212 | $25.74 | $108,417 |
| 2025-11-17 | Olsson Shawn | Officer | +Exercise | 10,000 | $2.08 | $20,800 |
| 2025-11-07 | Chevallard Daniel R. | Officer | +Buy | 20 | $22.71 | $454 |
| 2025-11-07 | Chevallard Daniel R. | Officer | +Buy | 2,178 | $22.76 | $49,571 |
| 2025-11-07 | MCCOLLUM JAMES W | Director | +Buy | 10,500 | $22.79 | $239,295 |
| 2025-09-30 | Versant Vantage II GP-GP, LLC | TenPercentOwner | −Sell | 123 | $47.01 | $5,782 |
| 2025-09-30 | Versant Vantage II GP-GP, LLC | TenPercentOwner | −Sell | 177 | $47.01 | $8,321 |
| 2025-09-30 | Versant Vantage II GP-GP, LLC | TenPercentOwner | −Sell | 57,502 | $46.41 | $3M |
| 2025-09-30 | Versant Vantage II GP-GP, LLC | TenPercentOwner | −Sell | 83,066 | $46.41 | $4M |
| 2025-09-30 | Versant Vantage II GP-GP, LLC | TenPercentOwner | −Sell | 49,701 | $45.35 | $2M |
| 2025-09-30 | Versant Vantage II GP-GP, LLC | TenPercentOwner | −Sell | 34,405 | $45.35 | $2M |
| 2025-09-18 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 40,907 | $43.00 | $2M |
| 2025-09-18 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 268 | $43.30 | $11,604 |
| 2025-09-18 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 20,148 | $43.00 | $866,364 |
| 2025-09-18 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 132 | $43.30 | $5,716 |
| 2025-09-18 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 24,370 | $41.59 | $1M |
| 2025-09-18 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 49,479 | $41.59 | $2M |
| 2025-08-26 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 21,661 | $38.97 | $844,129 |
| 2025-08-26 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 3,465 | $39.50 | $136,868 |
| 2025-08-26 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 1,707 | $39.50 | $67,427 |
| 2025-08-26 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 43,978 | $38.97 | $2M |
| 2025-08-25 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 2,149 | $39.92 | $85,788 |
| 2025-08-25 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 24,760 | $39.53 | $978,763 |
| 2025-08-25 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 50,270 | $39.53 | $2M |
| 2025-08-25 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 1,058 | $39.92 | $42,235 |
| 2025-08-22 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 10,076 | $40.03 | $403,342 |
| 2025-08-22 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 2,809 | $40.59 | $114,017 |
| 2025-08-22 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 5,668 | $40.59 | $230,064 |
| 2025-08-22 | Versant Ventures VII GP, L.P. | TenPercentOwner | −Sell | 20,493 | $40.03 | $820,335 |
| 2025-08-18 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 30,628 | $38.56 | $1M |
| 2025-08-18 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 15,085 | $38.56 | $581,678 |
| 2025-08-15 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 145,051 | $39.50 | $6M |
| 2025-08-15 | Versant Venture Capital VI, L.P. | TenPercentOwner | −Sell | 69,949 | $39.50 | $3M |
| 2025-07-10 | Versant Ventures VII GP-GP, LLC | TenPercentOwner | −Sell | 191,376 | $34.00 | $7M |
| 2025-06-27 | Versant Vantage II GP-GP, LLC | TenPercentOwner | −Sell | 200,000 | $30.47 | $6M |
| 2025-06-20 | Versant Ventures VI GP, L.P. | TenPercentOwner | −Sell | 133,924 | $30.25 | $4M |
| 2025-06-20 | Versant Ventures VI GP, L.P. | TenPercentOwner | −Sell | 100,877 | $30.35 | $3M |
| 2025-06-18 | Versant Ventures VI GP, L.P. | TenPercentOwner | −Sell | 100,000 | $29.95 | $3M |
| 2025-06-10 | Versant Vantage II GP-GP, LLC | TenPercentOwner | −Sell | 350,000 | $29.00 | $10M |
| 2025-04-09 | Olsson Shawn | Officer | +Exercise | 1,400 | $2.08 | $2,912 |
| 2025-03-07 | Schimmelpennink Evert B. | Director,Officer | +Exercise | 4,200 | $1.04 | $4,368 |
| 2024-12-16 | Olsson Shawn | Officer | +Exercise | 3,333 | $2.08 | $6,933 |
| 2024-07-22 | Schimmelpennink Evert B. | Director,Officer | +Exercise | 45,000 | $1.04 | $46,800 |
| 2024-05-14 | Chevallard Daniel R. | Officer | +Buy | 3,188 | $15.68 | $49,988 |
| 2024-05-13 | MCCOLLUM JAMES W | Director | +Buy | 31,332 | $15.99 | $500,999 |
| 2024-03-21 | Versant Vantage II GP, L.P. | TenPercentOwner | +Other | 598,203 | — | — |
| 2024-03-21 | Odrich Marc | Officer | +Grant | 99,599 | — | — |
| 2024-03-21 | MCCOLLUM JAMES W | Director | +Grant | 16,633 | $15.03 | $249,994 |
| 2024-03-21 | MCCOLLUM JAMES W | Director | +Grant | 477,600 | — | — |
| 2024-03-21 | MCCOLLUM JAMES W | Director | +Grant | 95,034 | — | — |
| 2024-03-21 | RA Capital Nexus Fund II, L.P. | Director,TenPercentOwner | +Grant | 164,729 | — | — |
| 2024-03-21 | RA Capital Nexus Fund II, L.P. | Director,TenPercentOwner | +Grant | 694,755 | — | — |
| 2024-03-21 | RA Capital Nexus Fund II, L.P. | Director,TenPercentOwner | +Grant | 2,386,301 | — | — |
| 2024-03-21 | RA Capital Nexus Fund II, L.P. | Director,TenPercentOwner | +Buy | 933,038 | $15.03 | $14M |
| 2024-03-21 | RA Capital Nexus Fund II, L.P. | Director,TenPercentOwner | +Buy | 64,971 | $15.03 | $976,514 |
Source: the SEC bulk insider (Form 3/4/5) data sets — non-derivative transactions in the issuer's common stock, most recent first, covering filings through 2026-06-30. Insiders file within 2 business days of a transaction, but the bulk sets publish quarterly, so this store lags live filings; option/derivative lines are excluded. Codes: P buy · S sell · A grant · M/X/C exercise · F tax · G gift.
Model-derived estimate for research. See the Disclaimer.
