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 |
|---|---|---|---|---|---|---|
| 2026-06-19 | Raman Prakash | Director | +Grant | 7,907 | $1.66 | $13,126 |
| 2026-06-19 | Behbahani Ali | Director | +Grant | 8,961 | $1.66 | $14,875 |
| 2026-03-20 | Raman Prakash | Director | +Grant | 6,105 | $2.15 | $13,126 |
| 2026-03-20 | Behbahani Ali | Director | +Grant | 6,919 | $2.15 | $14,876 |
| 2025-12-12 | Raman Prakash | Director | +Grant | 4,665 | $2.76 | $12,875 |
| 2025-12-12 | Behbahani Ali | Director | +Grant | 5,208 | $2.76 | $14,374 |
| 2025-09-19 | Raman Prakash | Director | +Grant | 3,843 | $3.35 | $12,874 |
| 2025-09-19 | Behbahani Ali | Director | +Grant | 4,291 | $3.35 | $14,375 |
| 2025-06-20 | Raman Prakash | Director | +Grant | 5,526 | $2.33 | $12,876 |
| 2025-06-20 | Behbahani Ali | Director | +Grant | 6,170 | $2.33 | $14,376 |
| 2025-03-21 | Raman Prakash | Director | +Grant | 6,848 | $1.88 | $12,874 |
| 2025-03-21 | Behbahani Ali | Director | +Grant | 7,646 | $1.88 | $14,374 |
| 2025-03-19 | BIOTECH GROWTH N V | TenPercentOwner | −Sell | 584,292 | $1.95 | $1M |
| 2025-03-19 | BIOTECH GROWTH N V | TenPercentOwner | −Sell | 300,000 | $1.94 | $582,000 |
| 2025-03-19 | BIOTECH GROWTH N V | TenPercentOwner | −Sell | 1,000,000 | $2.31 | $2M |
| 2025-03-19 | BIOTECH GROWTH N V | TenPercentOwner | −Sell | 2,000,000 | $2.00 | $4M |
| 2025-03-19 | BIOTECH GROWTH N V | TenPercentOwner | −Sell | 1,000,000 | $2.07 | $2M |
| 2025-03-19 | BIOTECH GROWTH N V | TenPercentOwner | −Sell | 500,000 | $2.12 | $1M |
| 2025-03-19 | BIOTECH GROWTH N V | TenPercentOwner | −Sell | 400,000 | $2.09 | $836,000 |
| 2025-01-30 | Hatzis-Schoch Brent | Officer | +Grant | 75,000 | — | — |
| 2025-01-30 | Jones Erika | Officer | +Grant | 75,000 | — | — |
| 2025-01-30 | Buck Elizabeth | Officer | +Grant | 75,000 | — | — |
| 2025-01-30 | Yurasov Sergey | Officer | +Grant | 75,000 | — | — |
| 2025-01-30 | Velleca Mark A. | Director,Officer | +Grant | 75,000 | — | — |
| 2024-12-13 | Campbell Shannon | Director | +Grant | 4,500 | $2.50 | $11,250 |
| 2024-12-13 | Raman Prakash | Director | +Grant | 5,150 | $2.50 | $12,875 |
| 2024-12-13 | Behbahani Ali | Director | +Grant | 5,750 | $2.50 | $14,375 |
| 2024-09-20 | Raman Prakash | Director | +Grant | 2,694 | $4.78 | $12,877 |
| 2024-09-20 | Campbell Shannon | Director | +Grant | 2,354 | $4.78 | $11,252 |
| 2024-09-20 | Behbahani Ali | Director | +Grant | 3,007 | $4.78 | $14,373 |
| 2024-08-28 | Versant Voyageurs I Parallel, L.P. | TenPercentOwner | −Sell | 221,600 | $6.32 | $1M |
| 2024-06-21 | Campbell Shannon | Director | +Grant | 2,011 | $4.98 | $10,015 |
| 2024-06-21 | Raman Prakash | Director | +Grant | 2,301 | $4.98 | $11,459 |
| 2024-06-21 | Behbahani Ali | Director | +Grant | 2,887 | $4.98 | $14,377 |
| 2024-03-15 | DIXON WENDY L | Director | +Grant | 3,253 | $4.54 | $14,769 |
| 2024-03-15 | Behbahani Ali | Director | +Grant | 3,166 | $4.54 | $14,374 |
| 2023-12-15 | DIXON WENDY L | Director | +Grant | 4,043 | $2.73 | $11,037 |
| 2023-12-15 | Behbahani Ali | Director | +Grant | 4,455 | $2.73 | $12,162 |
| 2023-10-17 | BIOTECH GROWTH N V | TenPercentOwner | +Buy | 400,000 | $2.34 | $936,000 |
| 2023-09-15 | DIXON WENDY L | Director | +Grant | 2,986 | $3.60 | $10,750 |
| 2023-09-15 | Velleca Mark A. | Director,Officer | +Grant | 5,208 | $3.60 | $18,749 |
| 2023-09-15 | Behbahani Ali | Director | +Grant | 3,299 | $3.60 | $11,876 |
| 2023-07-05 | Behbahani Ali | Director | +Buy | 1,000,000 | $5.00 | $5M |
| 2023-07-05 | RA CAPITAL MANAGEMENT, L.P. | Director | +Buy | 935,850 | $5.00 | $5M |
| 2023-06-30 | BB BIOTECH AG | TenPercentOwner | +Buy | 1,000,000 | $5.00 | $5M |
| 2023-06-27 | Epstein David M. | Director,Officer | −Sell | 25,000 | $6.70 | $167,500 |
| 2023-06-27 | BIOTECH GROWTH N V | TenPercentOwner | +Buy | 1,740,000 | $5.49 | $10M |
| 2023-06-16 | Velleca Mark A. | Director | +Grant | 8,929 | $2.10 | $18,751 |
| 2023-06-16 | DIXON WENDY L | Director | +Grant | 5,119 | $2.10 | $10,750 |
| 2023-06-16 | Behbahani Ali | Director | +Grant | 5,655 | $2.10 | $11,876 |
| 2023-03-16 | Velleca Mark A. | Director | +Grant | 11,228 | $1.67 | $18,751 |
| 2023-03-16 | DIXON WENDY L | Director | +Grant | 6,437 | $1.67 | $10,750 |
| 2023-03-16 | Behbahani Ali | Director | +Grant | 7,111 | $1.67 | $11,875 |
| 2023-02-13 | Jones Erika | Officer | +Grant | 5,075 | — | — |
| 2022-12-22 | Ni Fang | Officer | +Buy | 36,363 | $1.28 | $46,545 |
| 2022-12-21 | Ni Fang | Officer | +Buy | 20,000 | $1.29 | $25,800 |
| 2022-12-16 | INGRAM ROBERT ALEXANDER | Other | +Grant | 9,375 | $1.50 | $14,063 |
| 2022-12-16 | DIXON WENDY L | Director | +Grant | 7,167 | $1.50 | $10,751 |
| 2022-12-16 | Velleca Mark A. | Director | +Grant | 8,424 | $1.50 | $12,636 |
| 2022-12-16 | Behbahani Ali | Director | +Grant | 7,917 | $1.50 | $11,876 |
| 2022-10-31 | BIOTECH GROWTH N V | TenPercentOwner | +Buy | 99,801 | $2.25 | $224,552 |
| 2022-10-28 | BB BIOTECH AG | TenPercentOwner | +Buy | 172,974 | $2.18 | $377,083 |
| 2022-10-27 | BB BIOTECH AG | TenPercentOwner | +Buy | 191,678 | $1.87 | $358,438 |
| 2022-10-21 | BB BIOTECH AG | TenPercentOwner | +Buy | 87,850 | $1.51 | $132,654 |
| 2022-10-20 | BB BIOTECH AG | TenPercentOwner | +Buy | 53,734 | $1.42 | $76,302 |
| 2022-10-19 | BB BIOTECH AG | TenPercentOwner | +Buy | 77,689 | $1.32 | $102,549 |
| 2022-09-16 | INGRAM ROBERT ALEXANDER | Director | +Grant | 6,584 | $2.62 | $17,250 |
| 2022-09-16 | Velleca Mark A. | Director | +Grant | 4,294 | $2.62 | $11,250 |
| 2022-09-16 | DIXON WENDY L | Director | +Grant | 4,103 | $2.62 | $10,750 |
| 2022-09-16 | Behbahani Ali | Director | +Grant | 4,532 | $2.62 | $11,874 |
| 2022-06-29 | Ni Fang | Officer | +Buy | 25,000 | $2.44 | $61,000 |
| 2022-06-17 | INGRAM ROBERT ALEXANDER | Director | +Grant | 8,498 | $2.03 | $17,251 |
| 2022-06-17 | DIXON WENDY L | Director | +Grant | 4,060 | $2.03 | $8,242 |
| 2022-06-17 | Velleca Mark A. | Director | +Grant | 5,542 | $2.03 | $11,250 |
| 2022-06-17 | Behbahani Ali | Director | +Grant | 5,850 | $2.03 | $11,875 |
| 2022-06-17 | DIXON WENDY L | Director | +Grant | 4,946 | $2.03 | $10,040 |
| 2022-04-28 | BIOTECH GROWTH N V | TenPercentOwner | +Buy | 255,711 | $2.57 | $657,177 |
| 2022-04-27 | BIOTECH GROWTH N V | TenPercentOwner | +Buy | 150,000 | $2.66 | $399,000 |
| 2022-04-19 | BIOTECH GROWTH N V | TenPercentOwner | +Buy | 150,000 | $3.24 | $486,000 |
| 2022-04-18 | BIOTECH GROWTH N V | TenPercentOwner | +Buy | 150,000 | $3.29 | $493,500 |
| 2022-04-13 | BIOTECH GROWTH N V | TenPercentOwner | +Buy | 102,556 | $3.57 | $366,125 |
| 2022-04-12 | BIOTECH GROWTH N V | TenPercentOwner | +Buy | 150,000 | $3.42 | $513,000 |
| 2022-03-18 | INGRAM ROBERT ALEXANDER | Director | +Grant | 5,795 | $3.02 | $17,501 |
| 2022-03-18 | Velleca Mark A. | Director | +Grant | 2,897 | $3.02 | $8,749 |
| 2022-03-18 | Behbahani Ali | Director | +Grant | 4,346 | $3.02 | $13,125 |
| 2022-02-15 | Jones Erika | Officer | +Grant | 5,075 | — | — |
| 2021-12-17 | INGRAM ROBERT ALEXANDER | Director | +Grant | 3,296 | $5.31 | $17,502 |
| 2021-12-17 | Behbahani Ali | Director | +Grant | 2,472 | $5.31 | $13,126 |
| 2021-09-17 | INGRAM ROBERT ALEXANDER | Director | +Grant | 1,869 | $9.90 | $18,503 |
| 2021-09-17 | Behbahani Ali | Director | +Grant | 1,326 | $9.90 | $13,127 |
| 2021-06-18 | INGRAM ROBERT ALEXANDER | Director | +Grant | 1,255 | $12.95 | $16,252 |
| 2021-06-18 | Behbahani Ali | Director | +Grant | 1,014 | $12.95 | $13,131 |
| 2021-05-20 | Shah Rajeev M. | Director | −Other | 443 | $24.01 | $10,636 |
| 2021-05-12 | Hatzis-Schoch Brent | Officer | −Sell | 351 | $28.20 | $9,898 |
| 2021-05-12 | Hatzis-Schoch Brent | Officer | −Sell | 2,566 | $27.90 | $71,591 |
| 2021-05-12 | Hatzis-Schoch Brent | Officer | −Sell | 1,161 | $26.11 | $30,314 |
| 2021-05-12 | Hatzis-Schoch Brent | Officer | +Exercise | 4,078 | $3.20 | $13,050 |
| 2021-05-03 | Roberts Christopher D. | Officer | −Sell | 2,500 | $26.64 | $66,600 |
| 2021-05-03 | Roberts Christopher D. | Officer | +Exercise | 2,500 | $10.86 | $27,150 |
| 2021-04-12 | Hatzis-Schoch Brent | Officer | −Sell | 4,078 | $25.00 | $101,950 |
| 2021-04-12 | Hatzis-Schoch Brent | Officer | +Exercise | 4,078 | $3.20 | $13,050 |
| 2021-04-05 | Roberts Christopher D. | Officer | +Exercise | 2,500 | $10.86 | $27,150 |
| 2021-04-05 | Roberts Christopher D. | Officer | −Sell | 2,500 | $25.54 | $63,850 |
| 2021-04-01 | Shah Rajeev M. | Director | +Other | 353,814 | $24.26 | $9M |
| 2021-03-18 | INGRAM ROBERT ALEXANDER | Director | +Grant | 677 | $24.01 | $16,255 |
| 2021-03-18 | Shah Rajeev M. | Director | +Grant | 443 | $24.01 | $10,636 |
| 2021-03-18 | Behbahani Ali | Director | +Grant | 547 | $24.01 | $13,133 |
| 2021-03-12 | Hatzis-Schoch Brent | Officer | −Sell | 4,078 | $26.36 | $107,496 |
| 2021-03-12 | Hatzis-Schoch Brent | Officer | +Exercise | 4,078 | $3.20 | $13,050 |
| 2021-03-03 | Roberts Christopher D. | Officer | −Sell | 884 | $26.57 | $23,488 |
| 2021-03-03 | Roberts Christopher D. | Officer | +Exercise | 2,500 | $10.86 | $27,150 |
| 2021-03-03 | Roberts Christopher D. | Officer | −Sell | 1,616 | $25.85 | $41,774 |
| 2021-02-12 | Hatzis-Schoch Brent | Officer | −Sell | 307 | $27.66 | $8,492 |
| 2021-02-12 | Hatzis-Schoch Brent | Officer | −Sell | 3,771 | $27.19 | $102,533 |
| 2021-02-12 | Hatzis-Schoch Brent | Officer | +Exercise | 4,078 | $3.20 | $13,050 |
| 2021-02-03 | Roberts Christopher D. | Officer | +Exercise | 2,500 | $10.86 | $27,150 |
| 2021-02-03 | Roberts Christopher D. | Officer | −Sell | 2,500 | $25.35 | $63,375 |
| 2021-01-12 | Hatzis-Schoch Brent | Officer | −Sell | 1,669 | $30.50 | $50,905 |
| 2021-01-12 | Hatzis-Schoch Brent | Officer | −Sell | 100 | $34.13 | $3,413 |
| 2021-01-12 | Hatzis-Schoch Brent | Officer | −Sell | 103 | $32.50 | $3,348 |
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.
