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 |
|---|---|---|---|---|---|---|
| 2026-06-17 | LAVIGNE LOUIS J JR | Director | +Grant | 28,700 | — | — |
| 2026-06-17 | DESOUZA ERROL B | Director | +Grant | 28,700 | — | — |
| 2026-06-17 | Altmeyer Mark | Director | +Grant | 28,700 | — | — |
| 2026-06-17 | Hammond Paula | Director | +Grant | 28,700 | — | — |
| 2026-06-17 | SCHELLER RICHARD H | Director | +Grant | 28,700 | — | — |
| 2026-06-17 | GAROFALO ELIZABETH A. | Director | +Grant | 28,700 | — | — |
| 2026-06-17 | Yaffe Kristine | Director | +Grant | 28,700 | — | — |
| 2026-06-03 | Wong-Sarad Grace | Officer | −Sell | 3,475 | $1.88 | $6,533 |
| 2026-06-02 | Berkley Neil Lindsay | Officer | −Sell | 19,360 | $1.97 | $38,139 |
| 2026-06-02 | Wong-Sarad Grace | Officer | −Sell | 5,709 | $1.97 | $11,247 |
| 2026-06-02 | Rosenthal Arnon | Director,Officer | −Sell | 87,216 | $1.97 | $171,816 |
| 2026-06-01 | SCHELLER RICHARD H | Director | +Grant | 10,833 | — | — |
| 2026-04-16 | Wong-Sarad Grace | Officer | −Sell | 1,820 | $2.65 | $4,823 |
| 2026-03-13 | Rosenthal Arnon | Director,Officer | +Grant | 116,246 | — | — |
| 2026-03-10 | Wong-Sarad Grace | Officer | −Sell | 1,000 | $2.65 | $2,650 |
| 2026-03-03 | Wong-Sarad Grace | Officer | −Sell | 3,367 | $2.08 | $7,003 |
| 2026-03-02 | Rosenthal Arnon | Director,Officer | −Sell | 81,864 | $2.12 | $173,552 |
| 2026-03-02 | Wong-Sarad Grace | Officer | −Sell | 8,071 | $2.12 | $17,111 |
| 2026-03-02 | Berkley Neil Lindsay | Officer | −Sell | 29,649 | $2.12 | $62,856 |
| 2026-02-26 | Wong-Sarad Grace | Officer | −Sell | 4,079 | $2.50 | $10,198 |
| 2025-12-05 | Wong-Sarad Grace | Officer | −Sell | 4,753 | $1.21 | $5,751 |
| 2025-12-03 | Berkley Neil Lindsay | Officer | −Sell | 37,261 | $1.12 | $41,732 |
| 2025-12-03 | Kenkare-Mitra Sara | Officer | −Sell | 41,687 | $1.12 | $46,689 |
| 2025-12-03 | Rosenthal Arnon | Director,Officer | −Sell | 104,347 | $1.12 | $116,869 |
| 2025-12-03 | Wong-Sarad Grace | Officer | −Sell | 8,056 | $1.12 | $9,023 |
| 2025-11-10 | Rosenthal Arnon | Director,Officer | +Grant | 174,167 | — | — |
| 2025-11-10 | Berkley Neil Lindsay | Officer | +Grant | 65,000 | — | — |
| 2025-11-10 | Wong-Sarad Grace | Officer | +Grant | 32,343 | — | — |
| 2025-09-02 | Rosenthal Arnon | Director,Officer | −Sell | 51,562 | $2.50 | $128,905 |
| 2025-09-02 | Kenkare-Mitra Sara | Officer | −Sell | 23,638 | $2.50 | $59,095 |
| 2025-09-02 | Berkley Neil Lindsay | Officer | −Sell | 15,842 | $2.50 | $39,605 |
| 2025-09-02 | Wong-Sarad Grace | Officer | −Sell | 5,910 | $2.50 | $14,775 |
| 2025-08-26 | Hammond Paula | Director | −Sell | 14,000 | $2.36 | $33,040 |
| 2025-07-01 | Rosenthal Arnon | Director,Officer | +Grant | 137,125 | — | — |
| 2025-07-01 | Kenkare-Mitra Sara | Officer | +Grant | 54,725 | — | — |
| 2025-06-20 | Yaffe Kristine | Director | −Sell | 1,000 | $1.44 | $1,440 |
| 2025-06-11 | Altmeyer Mark | Director | +Grant | 28,700 | — | — |
| 2025-06-11 | DESOUZA ERROL B | Director | +Grant | 28,700 | — | — |
| 2025-06-11 | LAVIGNE LOUIS J JR | Director | +Grant | 28,700 | — | — |
| 2025-06-11 | SCHELLER RICHARD H | Director | +Grant | 28,700 | — | — |
| 2025-06-11 | GAROFALO ELIZABETH A. | Director | +Grant | 28,700 | — | — |
| 2025-06-11 | Yaffe Kristine | Director | +Grant | 28,700 | — | — |
| 2025-06-11 | Hammond Paula | Director | +Grant | 28,700 | — | — |
| 2025-06-02 | Rosenthal Arnon | Director,Officer | −Sell | 52,087 | $1.34 | $69,797 |
| 2025-06-02 | Kenkare-Mitra Sara | Officer | −Sell | 23,890 | $1.34 | $32,013 |
| 2025-06-02 | GRASSO MARC | Officer | −Sell | 16,488 | $1.34 | $22,094 |
| 2025-05-02 | SCHELLER RICHARD H | Director | +Grant | 15,833 | — | — |
| 2025-03-03 | Romano Gary | Officer | −Sell | 16,306 | $1.47 | $23,970 |
| 2025-03-03 | Rosenthal Arnon | Director,Officer | −Sell | 40,330 | $1.47 | $59,285 |
| 2025-03-03 | Kenkare-Mitra Sara | Officer | −Sell | 29,073 | $1.47 | $42,737 |
| 2025-03-03 | GRASSO MARC | Officer | −Sell | 18,091 | $1.47 | $26,594 |
| 2024-12-02 | Romano Gary | Officer | −Sell | 14,892 | $2.52 | $37,528 |
| 2024-12-02 | Kenkare-Mitra Sara | Officer | −Sell | 26,500 | $2.52 | $66,780 |
| 2024-12-02 | Rosenthal Arnon | Director,Officer | −Sell | 52,172 | $2.52 | $131,473 |
| 2024-12-02 | GRASSO MARC | Officer | −Sell | 16,489 | $2.52 | $41,552 |
| 2024-10-01 | Romano Gary | Officer | +Grant | 184,380 | — | — |
| 2024-10-01 | Kenkare-Mitra Sara | Officer | +Grant | 300,000 | — | — |
| 2024-10-01 | Rosenthal Arnon | Director,Officer | +Grant | 610,500 | — | — |
| 2024-10-01 | GRASSO MARC | Officer | +Grant | 216,400 | — | — |
| 2024-09-03 | Romano Gary | Officer | −Sell | 8,478 | $4.88 | $41,373 |
| 2024-09-03 | Kenkare-Mitra Sara | Officer | −Sell | 13,926 | $4.88 | $67,959 |
| 2024-09-03 | Rosenthal Arnon | Director,Officer | −Sell | 26,499 | $4.88 | $129,315 |
| 2024-09-03 | GRASSO MARC | Officer | −Sell | 7,297 | $4.88 | $35,609 |
| 2024-08-22 | SCHELLER RICHARD H | Director | −Sell | 44,250 | $5.16 | $228,330 |
| 2024-08-12 | Yaffe Kristine | Director | −Sell | 5,000 | $5.06 | $25,300 |
| 2024-08-12 | Hammond Paula | Director | −Sell | 10,500 | $5.06 | $53,130 |
| 2024-08-02 | SCHELLER RICHARD H | Director | +Grant | 15,833 | — | — |
| 2024-06-12 | Hammond Paula | Director | +Grant | 35,000 | — | — |
| 2024-06-12 | Wehner David M. | Director | +Grant | 35,000 | — | — |
| 2024-06-12 | SCHELLER RICHARD H | Director | +Grant | 35,000 | — | — |
| 2024-06-12 | GAROFALO ELIZABETH A. | Director | +Grant | 35,000 | — | — |
| 2024-06-12 | Yaffe Kristine | Director | +Grant | 35,000 | — | — |
| 2024-06-12 | LAVIGNE LOUIS J JR | Director | +Grant | 35,000 | — | — |
| 2024-06-03 | GRASSO MARC | Officer | −Sell | 6,920 | $4.80 | $33,216 |
| 2024-06-03 | Kenkare-Mitra Sara | Officer | −Sell | 13,206 | $4.80 | $63,389 |
| 2024-06-03 | Romano Gary | Officer | −Sell | 8,040 | $4.80 | $38,592 |
| 2024-06-03 | Rosenthal Arnon | Director,Officer | −Sell | 25,135 | $4.80 | $120,648 |
| 2024-05-29 | Polaris Venture Management Co. VI, L.L.C. | TenPercentOwner | −Other | 98,533 | — | — |
| 2024-05-29 | Polaris Venture Management Co. VI, L.L.C. | TenPercentOwner | +Other | 98,533 | — | — |
| 2024-05-29 | Polaris Venture Management Co. VI, L.L.C. | TenPercentOwner | −Other | 500,000 | — | — |
| 2024-04-30 | Polaris Venture Partners VI (AIV), L.P. | TenPercentOwner | +Other | 98,533 | — | — |
| 2024-04-30 | Polaris Venture Partners VI (AIV), L.P. | TenPercentOwner | −Other | 98,533 | — | — |
| 2024-04-30 | Polaris Venture Partners VI (AIV), L.P. | TenPercentOwner | −Other | 500,000 | — | — |
| 2024-03-19 | DESOUZA ERROL B | Director | +Grant | 41,250 | — | — |
| 2024-03-19 | Altmeyer Mark | Director | +Grant | 41,250 | — | — |
| 2024-03-04 | Rosenthal Arnon | Director,Officer | −Sell | 18,837 | $6.92 | $130,352 |
| 2024-03-04 | GRASSO MARC | Officer | −Sell | 5,716 | $6.92 | $39,555 |
| 2024-03-04 | Kenkare-Mitra Sara | Officer | −Sell | 10,169 | $6.92 | $70,369 |
| 2024-03-04 | Romano Gary | Officer | −Sell | 6,001 | $6.92 | $41,527 |
| 2023-12-05 | GAROFALO ELIZABETH A. | Director | −Gift | 9,459 | — | — |
| 2023-12-04 | Kenkare-Mitra Sara | Officer | −Sell | 12,519 | $5.56 | $69,606 |
| 2023-12-04 | GRASSO MARC | Officer | −Sell | 4,574 | $5.56 | $25,431 |
| 2023-12-04 | Romano Gary | Officer | −Sell | 5,035 | $5.56 | $27,995 |
| 2023-12-04 | Rosenthal Arnon | Director,Officer | −Sell | 23,831 | $5.56 | $132,500 |
| 2023-10-01 | Rosenthal Arnon | Director,Officer | +Grant | 397,600 | — | — |
| 2023-10-01 | Kenkare-Mitra Sara | Officer | +Grant | 163,600 | — | — |
| 2023-10-01 | GRASSO MARC | Officer | +Grant | 123,000 | — | — |
| 2023-10-01 | Romano Gary | Officer | +Grant | 108,000 | — | — |
| 2023-09-11 | MCGUIRE TERRANCE | Director,TenPercentOwner | −Sell | 500,000 | $6.00 | $3M |
| 2023-09-11 | Polaris Venture Management Co. VI, L.L.C. | TenPercentOwner | −Sell | 500,000 | $6.00 | $3M |
| 2023-09-05 | GRASSO MARC | Officer | −Sell | 1,114 | $5.19 | $5,782 |
| 2023-09-05 | Romano Gary | Officer | −Sell | 2,771 | $5.19 | $14,381 |
| 2023-09-05 | Kenkare-Mitra Sara | Officer | −Sell | 6,214 | $5.19 | $32,251 |
| 2023-09-05 | Rosenthal Arnon | Director,Officer | −Sell | 5,647 | $5.19 | $29,308 |
| 2023-08-22 | Polaris Venture Management Co. VI, L.L.C. | TenPercentOwner | +Other | 98,533 | — | — |
| 2023-08-22 | Polaris Venture Management Co. VI, L.L.C. | TenPercentOwner | −Other | 500,000 | — | — |
| 2023-08-22 | Polaris Venture Management Co. VI, L.L.C. | TenPercentOwner | −Other | 98,533 | — | — |
| 2023-08-22 | MCGUIRE TERRANCE | Director,TenPercentOwner | +Other | 13,133 | — | — |
| 2023-08-22 | MCGUIRE TERRANCE | Director,TenPercentOwner | −Other | 500,000 | — | — |
| 2023-08-22 | MCGUIRE TERRANCE | Director,TenPercentOwner | +Other | 6,429 | — | — |
| 2023-08-22 | MCGUIRE TERRANCE | Director,TenPercentOwner | +Other | 98,533 | — | — |
| 2023-08-22 | MCGUIRE TERRANCE | Director,TenPercentOwner | −Other | 98,533 | — | — |
| 2023-07-15 | SCHELLER RICHARD H | Director | +Grant | 8,541 | — | — |
| 2023-06-14 | GAROFALO ELIZABETH A. | Director | +Grant | 26,250 | — | — |
| 2023-06-14 | Hammond Paula | Director | +Grant | 26,250 | — | — |
| 2023-06-14 | SCHELLER RICHARD H | Director | +Grant | 26,250 | — | — |
| 2023-06-14 | LAVIGNE LOUIS J JR | Director | +Grant | 26,250 | — | — |
| 2023-06-14 | Yaffe Kristine | Director | +Grant | 26,250 | — | — |
| 2023-06-14 | Wehner David M. | Director | +Grant | 26,250 | — | — |
| 2023-06-14 | MCGUIRE TERRANCE | Director,TenPercentOwner | +Grant | 26,250 | — | — |
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.
