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 |
|---|---|---|---|---|---|---|
| 2026-06-20 | Mackay Sean | Officer | +Grant | 500,000 | — | — |
| 2026-06-18 | HIBBS KATHY L | Director | +Grant | 99,116 | — | — |
| 2026-06-18 | ELOI FENEL M | Director | +Grant | 99,116 | — | — |
| 2026-06-18 | Cox Troy | Director | +Grant | 99,116 | — | — |
| 2026-06-18 | Casdin Eli | Director,TenPercentOwner | +Grant | 99,116 | — | — |
| 2026-06-18 | Witney Frank | Director | +Grant | 99,116 | — | — |
| 2026-06-18 | Carey Thomas D. | Director | +Grant | 99,116 | — | — |
| 2026-05-20 | Egholm Michael | Director,Officer | −Tax w/h | 97,626 | $1.00 | $97,626 |
| 2026-05-20 | Mackay Sean | Officer | −Tax w/h | 25,729 | $1.00 | $25,729 |
| 2026-05-20 | Kim Hanjoon Alex | Officer | −Tax w/h | 18,871 | $1.00 | $18,871 |
| 2026-04-06 | Kim Hanjoon Alex | Officer | +Exercise | 70,183 | — | — |
| 2026-04-06 | Kim Hanjoon Alex | Officer | −Tax w/h | 21,301 | $0.91 | $19,384 |
| 2026-04-06 | Egholm Michael | Director,Officer | −Tax w/h | 95,014 | $0.91 | $86,463 |
| 2026-04-06 | Egholm Michael | Director,Officer | +Exercise | 196,513 | — | — |
| 2026-03-20 | Kim Hanjoon Alex | Officer | +Grant | 323,173 | — | — |
| 2026-03-20 | Mackay Sean | Officer | +Grant | 272,107 | — | — |
| 2026-03-20 | Egholm Michael | Director,Officer | +Grant | 1,042,373 | — | — |
| 2026-02-26 | Carey Thomas D. | Director | +Grant | 51,282 | $1.17 | $60,000 |
| 2026-02-26 | Cox Troy | Director | +Grant | 57,264 | $1.17 | $66,999 |
| 2026-02-26 | Casdin Eli | Director,TenPercentOwner | +Grant | 52,991 | $1.17 | $61,999 |
| 2026-02-23 | Kim Hanjoon Alex | Officer | −Tax w/h | 12,740 | $1.15 | $14,651 |
| 2026-02-23 | Mackay Sean | Officer | −Tax w/h | 19,661 | $1.15 | $22,610 |
| 2026-02-23 | Egholm Michael | Director,Officer | −Tax w/h | 66,127 | $1.15 | $76,046 |
| 2025-12-04 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | +Buy | 150,000 | $1.45 | $217,500 |
| 2025-12-03 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | +Buy | 75,000 | $1.44 | $108,000 |
| 2025-12-02 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | +Buy | 125,000 | $1.42 | $177,500 |
| 2025-11-25 | Casdin Partners GP, LLC | Director,TenPercentOwner | +Buy | 7,550,000 | $1.30 | $10M |
| 2025-11-24 | Casdin Partners GP, LLC | Director,TenPercentOwner | +Buy | 150,000 | $1.43 | $214,500 |
| 2025-11-20 | Casdin Eli | Director,TenPercentOwner | +Buy | 450,000 | $1.30 | $585,000 |
| 2025-11-20 | Mackay Sean | Officer | −Tax w/h | 19,661 | $1.28 | $25,166 |
| 2025-11-20 | Kim Hanjoon Alex | Officer | −Tax w/h | 12,739 | $1.28 | $16,306 |
| 2025-11-20 | Egholm Michael | Director,Officer | −Tax w/h | 63,529 | $1.28 | $81,317 |
| 2025-11-19 | Casdin Eli | Director,TenPercentOwner | +Buy | 350,000 | $1.28 | $448,000 |
| 2025-11-18 | Casdin Eli | Director,TenPercentOwner | +Buy | 275,000 | $1.23 | $338,250 |
| 2025-11-17 | Casdin Partners Master Fund, L.P. | Director,TenPercentOwner | +Buy | 225,000 | $1.22 | $274,500 |
| 2025-11-14 | Casdin Partners Master Fund, L.P. | Director,TenPercentOwner | +Buy | 250,000 | $1.24 | $310,000 |
| 2025-11-13 | Casdin Partners Master Fund, L.P. | Director,TenPercentOwner | +Buy | 450,000 | $1.20 | $540,000 |
| 2025-11-12 | Casdin Partners GP, LLC | Director,TenPercentOwner | +Buy | 375,000 | $1.19 | $446,250 |
| 2025-11-11 | Casdin Partners GP, LLC | Director,TenPercentOwner | +Buy | 300,000 | $1.20 | $360,000 |
| 2025-11-10 | Casdin Partners GP, LLC | Director,TenPercentOwner | +Buy | 275,000 | $1.17 | $321,750 |
| 2025-11-07 | Casdin Partners GP, LLC | Director,TenPercentOwner | +Buy | 225,000 | $1.12 | $252,000 |
| 2025-09-09 | Casdin Partners Master Fund, L.P. | Director,TenPercentOwner | +Buy | 100,000 | $1.29 | $129,000 |
| 2025-09-04 | Casdin Eli | Director,TenPercentOwner | +Buy | 250,000 | $1.28 | $320,000 |
| 2025-09-03 | Casdin Eli | Director,TenPercentOwner | +Buy | 250,000 | $1.27 | $317,500 |
| 2025-08-26 | Casdin Partners Master Fund, L.P. | Director,TenPercentOwner | +Buy | 125,000 | $1.26 | $157,500 |
| 2025-08-25 | Casdin Partners Master Fund, L.P. | Director,TenPercentOwner | +Buy | 200,000 | $1.24 | $248,000 |
| 2025-08-22 | Casdin Partners Master Fund, L.P. | Director,TenPercentOwner | +Buy | 200,000 | $1.26 | $252,000 |
| 2025-08-20 | Kim Hanjoon Alex | Officer | −Tax w/h | 12,739 | $1.27 | $16,179 |
| 2025-08-20 | Mackay Sean | Officer | −Tax w/h | 19,661 | $1.27 | $24,969 |
| 2025-08-20 | Egholm Michael | Director,Officer | −Tax w/h | 54,919 | $1.27 | $69,747 |
| 2025-08-15 | Casdin Eli | Director,TenPercentOwner | +Buy | 150,000 | $1.22 | $183,000 |
| 2025-08-14 | Casdin Eli | Director,TenPercentOwner | +Buy | 133,220 | $1.21 | $161,196 |
| 2025-08-13 | Casdin Eli | Director,TenPercentOwner | +Buy | 75,000 | $1.31 | $98,250 |
| 2025-08-01 | Egholm Michael | Director,Officer | +Grant | 3,000,000 | — | — |
| 2025-08-01 | Kim Hanjoon Alex | Officer | +Grant | 1,500,000 | — | — |
| 2025-06-20 | Witney Frank | Director | +Grant | 94,592 | — | — |
| 2025-06-20 | HIBBS KATHY L | Director | +Grant | 94,592 | — | — |
| 2025-06-20 | Casdin Eli | Director,TenPercentOwner | +Grant | 94,592 | — | — |
| 2025-06-20 | Carey Thomas D. | Director | +Grant | 94,592 | — | — |
| 2025-06-20 | ELOI FENEL M | Director | +Grant | 94,592 | — | — |
| 2025-06-20 | Cox Troy | Director | +Grant | 94,592 | — | — |
| 2025-05-28 | Kim Hanjoon Alex | Officer | −Tax w/h | 2,583 | $1.09 | $2,815 |
| 2025-05-28 | Egholm Michael | Director,Officer | −Tax w/h | 9,906 | $1.09 | $10,798 |
| 2025-05-28 | Mackay Sean | Officer | −Tax w/h | 23,919 | $1.09 | $26,072 |
| 2025-05-23 | Egholm Michael | Director,Officer | −Sell | 5,473 | $0.94 | $5,145 |
| 2025-05-23 | Mackay Sean | Officer | −Sell | 13,217 | $0.94 | $12,424 |
| 2025-05-23 | Kim Hanjoon Alex | Officer | −Sell | 1,428 | $0.94 | $1,342 |
| 2025-05-22 | Mackay Sean | Officer | −Sell | 12,536 | $1.00 | $12,536 |
| 2025-05-22 | Egholm Michael | Director,Officer | −Sell | 5,116 | $1.00 | $5,116 |
| 2025-05-22 | Kim Hanjoon Alex | Officer | −Sell | 1,355 | $1.00 | $1,355 |
| 2025-05-21 | Kim Hanjoon Alex | Officer | −Sell | 1,407 | $1.03 | $1,449 |
| 2025-05-21 | Egholm Michael | Director,Officer | −Sell | 4,719 | $1.03 | $4,861 |
| 2025-05-21 | Mackay Sean | Officer | −Sell | 12,838 | $1.03 | $13,223 |
| 2025-05-20 | Kim Hanjoon Alex | Officer | −Tax w/h | 6,364 | $1.05 | $6,682 |
| 2025-05-20 | Egholm Michael | Director,Officer | −Tax w/h | 18,343 | $1.05 | $19,260 |
| 2025-04-04 | Kim Hanjoon Alex | Officer | +Exercise | 70,183 | — | — |
| 2025-04-04 | Kim Hanjoon Alex | Officer | −Tax w/h | 21,441 | $1.07 | $22,942 |
| 2025-04-04 | Egholm Michael | Director,Officer | −Tax w/h | 57,676 | $1.07 | $61,713 |
| 2025-04-04 | Egholm Michael | Director,Officer | +Exercise | 196,512 | — | — |
| 2025-03-21 | Egholm Michael | Director,Officer | +Grant | 1,188,333 | — | — |
| 2025-03-21 | Mackay Sean | Officer | +Grant | 281,667 | — | — |
| 2025-03-21 | Kim Hanjoon Alex | Officer | +Grant | 338,333 | — | — |
| 2025-02-28 | Cox Troy | Director | +Grant | 62,910 | $1.07 | $67,314 |
| 2025-02-28 | Carey Thomas D. | Director | +Grant | 56,338 | $1.07 | $60,282 |
| 2025-02-28 | Casdin Capital, LLC | Director,TenPercentOwner | +Grant | 58,215 | $1.07 | $62,290 |
| 2025-02-28 | Casdin Capital, LLC | Director,TenPercentOwner | +Buy | 4,820,959 | $1.07 | $5M |
| 2025-02-28 | Casdin Capital, LLC | Director,TenPercentOwner | +Other | 545,000 | $1.07 | $583,150 |
| 2025-02-28 | Casdin Capital, LLC | Director,TenPercentOwner | −Other | 545,000 | $1.07 | $583,150 |
| 2025-02-20 | Egholm Michael | Director,Officer | −Tax w/h | 31,031 | $1.39 | $43,133 |
| 2024-11-20 | Egholm Michael | Director,Officer | −Tax w/h | 28,795 | $1.51 | $43,480 |
| 2024-08-27 | Casdin Private Growth Equity Fund, L.P. | Director | +Buy | 250,000 | $2.19 | $547,500 |
| 2024-08-26 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | +Buy | 150,000 | $2.15 | $322,500 |
| 2024-08-23 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | +Buy | 292,100 | $2.13 | $622,173 |
| 2024-08-22 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | +Buy | 307,900 | $1.96 | $603,484 |
| 2024-08-21 | Casdin Amplify Fund, LP | Director | +Buy | 500,000 | $1.90 | $950,000 |
| 2024-08-20 | Casdin Amplify Fund, LP | Director | +Buy | 500,000 | $1.87 | $935,000 |
| 2024-08-20 | Egholm Michael | Director,Officer | −Tax w/h | 29,093 | $1.91 | $55,568 |
| 2024-08-20 | Black Jeffrey G. | Officer | −Tax w/h | 6,690 | $1.91 | $12,778 |
| 2024-08-19 | Casdin Amplify Fund, LP | Director | +Buy | 250,000 | $1.85 | $462,500 |
| 2024-08-15 | Black Jeffrey G. | Officer | +Exercise | 13,157 | — | — |
| 2024-08-15 | Black Jeffrey G. | Officer | −Tax w/h | 4,695 | $1.55 | $7,277 |
| 2024-08-14 | Casdin Private Growth Equity Fund II, L.P. | Director | +Buy | 1,200,000 | $1.59 | $2M |
| 2024-08-13 | Casdin Amplify Fund, LP | Director | +Buy | 550,000 | $1.62 | $891,000 |
| 2024-08-12 | Casdin Amplify Fund, LP | Director | +Buy | 500,000 | $1.64 | $820,000 |
| 2024-08-09 | Casdin Amplify Fund, LP | Director | +Buy | 525,408 | $1.61 | $845,907 |
| 2024-08-08 | Casdin Private Growth Equity Fund, L.P. | Director | +Buy | 569,562 | $1.64 | $934,082 |
| 2024-08-07 | Casdin Private Growth Equity Fund, L.P. | Director | +Buy | 500,000 | $1.57 | $785,000 |
| 2024-08-05 | Casdin Eli | Director,TenPercentOwner | +Buy | 200,000 | $1.58 | $316,000 |
| 2024-08-02 | Casdin Eli | Director,TenPercentOwner | +Buy | 1,000,000 | $1.63 | $2M |
| 2024-07-19 | Casdin Eli | Director,TenPercentOwner | +Grant | 1,588 | — | — |
| 2024-06-28 | HIBBS KATHY L | Director | +Grant | 43,128 | — | — |
| 2024-06-28 | Carey Thomas D. | Director | +Grant | 43,128 | — | — |
| 2024-06-28 | ELOI FENEL M | Director | +Grant | 43,128 | — | — |
| 2024-06-28 | Casdin Eli | Director,TenPercentOwner | +Grant | 43,128 | — | — |
| 2024-06-28 | Cox Troy | Director | +Grant | 43,128 | — | — |
| 2024-06-28 | Witney Frank | Director | +Grant | 43,128 | — | — |
| 2024-06-18 | Casdin Capital, LLC | Director,TenPercentOwner | +Other | 545,000 | $2.05 | $1M |
| 2024-06-18 | Casdin Capital, LLC | Director,TenPercentOwner | −Other | 1,200,000 | $2.05 | $2M |
| 2024-06-18 | Casdin Capital, LLC | Director,TenPercentOwner | +Other | 655,000 | $2.05 | $1M |
| 2024-05-23 | Casdin Partners FO1-MSV, LP | Director | +Buy | 100,000 | $2.60 | $260,000 |
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.
