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 |
|---|---|---|---|---|---|---|
| 2026-06-03 | Adamchak Mark | Officer | −Tax w/h | 7 | $1.30 | $9 |
| 2026-06-03 | Chaubey Alka | Officer | −Tax w/h | 24 | $1.30 | $31 |
| 2026-06-03 | OLDAKOWSKI MARK | Officer | −Tax w/h | 27 | $1.30 | $35 |
| 2026-06-03 | Dixon Jonathan V. | Officer | −Tax w/h | 24 | $1.30 | $31 |
| 2026-02-17 | Holmlin R. Erik | Director,Officer | −Tax w/h | 51 | $1.10 | $56 |
| 2026-02-17 | OLDAKOWSKI MARK | Officer | −Tax w/h | 20 | $1.10 | $22 |
| 2026-02-17 | Dixon Jonathan V. | Officer | −Tax w/h | 6 | $1.10 | $7 |
| 2026-02-17 | Adamchak Mark | Officer | −Tax w/h | 3 | $1.10 | $3 |
| 2026-02-17 | Chaubey Alka | Officer | −Tax w/h | 18 | $1.10 | $20 |
| 2025-09-11 | Chaubey Alka | Officer | −Tax w/h | 51 | $4.06 | $207 |
| 2025-09-11 | OLDAKOWSKI MARK | Officer | −Tax w/h | 59 | $4.06 | $240 |
| 2025-09-11 | OLDAKOWSKI MARK | Officer | −Tax w/h | 59 | $4.06 | $240 |
| 2025-06-03 | Dixon Jonathan V. | Officer | −Tax w/h | 25 | $3.69 | $92 |
| 2025-06-03 | Holmlin R. Erik | Director,Officer | −Tax w/h | 75 | $3.69 | $277 |
| 2025-06-03 | Chaubey Alka | Officer | −Tax w/h | 24 | $3.69 | $89 |
| 2025-06-03 | Adamchak Mark | Officer | −Tax w/h | 7 | $3.69 | $26 |
| 2025-06-03 | OLDAKOWSKI MARK | Officer | −Tax w/h | 27 | $3.69 | $100 |
| 2025-03-14 | Holmlin R. Erik | Director,Officer | −Tax w/h | 198 | $3.47 | $687 |
| 2025-02-15 | Adamchak Mark | Officer | −Tax w/h | 4 | $5.73 | $23 |
| 2025-02-15 | Chaubey Alka | Officer | −Tax w/h | 18 | $5.73 | $103 |
| 2025-02-15 | Holmlin R. Erik | Director,Officer | −Tax w/h | 51 | $5.73 | $292 |
| 2025-02-15 | Dixon Jonathan V. | Officer | −Tax w/h | 6 | $5.73 | $34 |
| 2025-02-15 | OLDAKOWSKI MARK | Officer | −Tax w/h | 20 | $5.73 | $115 |
| 2024-09-11 | Chaubey Alka | Officer | −Tax w/h | 3,075 | $0.48 | $1,476 |
| 2024-09-11 | OLDAKOWSKI MARK | Officer | −Tax w/h | 3,568 | $0.48 | $1,713 |
| 2024-06-03 | Chaubey Alka | Officer | +Grant | 16,000 | — | — |
| 2024-06-03 | Dixon Jonathan V. | Officer | +Grant | 14,500 | — | — |
| 2024-06-03 | Holmlin R. Erik | Director,Officer | +Grant | 44,000 | — | — |
| 2024-06-03 | Kama Gulsen | Officer | +Grant | 16,000 | — | — |
| 2024-06-03 | OLDAKOWSKI MARK | Officer | +Grant | 16,000 | — | — |
| 2024-02-15 | Dixon Jonathan V. | Officer | −Tax w/h | 402 | $1.27 | $511 |
| 2024-02-15 | Holmlin R. Erik | Director,Officer | −Tax w/h | 3,073 | $1.27 | $3,903 |
| 2024-02-15 | OLDAKOWSKI MARK | Officer | −Tax w/h | 1,229 | $1.27 | $1,561 |
| 2024-02-15 | Chaubey Alka | Officer | −Tax w/h | 1,081 | $1.27 | $1,373 |
| 2023-09-18 | Chaubey Alka | Officer | +Grant | 20,000 | — | — |
| 2023-09-18 | OLDAKOWSKI MARK | Officer | +Grant | 20,000 | — | — |
| 2023-06-13 | Mamuszka Hannah | Director | +Buy | 65,789 | $0.76 | $50,000 |
| 2023-05-16 | Holmlin R. Erik | Director,Officer | +Buy | 15,000 | $0.64 | $9,600 |
| 2023-05-12 | Holmlin R. Erik | Director,Officer | −Tax w/h | 50,141 | $0.66 | $33,093 |
| 2023-05-12 | OLDAKOWSKI MARK | Officer | −Tax w/h | 41,496 | $0.66 | $27,387 |
| 2023-05-12 | Stewart Christopher P. | Officer | +Buy | 50,000 | $0.67 | $33,500 |
| 2023-02-15 | Stewart Christopher P. | Officer | +Grant | 105,000 | — | — |
| 2023-02-15 | Chaubey Alka | Officer | +Grant | 120,000 | — | — |
| 2023-02-15 | OLDAKOWSKI MARK | Officer | +Grant | 120,000 | — | — |
| 2023-02-15 | Holmlin R. Erik | Director,Officer | +Grant | 300,000 | — | — |
| 2022-08-15 | Linney Yvonne | Director | −Sell | 20,000 | $3.62 | $72,400 |
| 2022-08-15 | Linney Yvonne | Director | +Exercise | 20,000 | $0.38 | $7,600 |
| 2022-07-07 | BARKER DAVID L | Director | +Exercise | 44,470 | $0.51 | $22,680 |
| 2022-05-16 | BARKER DAVID L | Director | +Buy | 10,000 | $1.60 | $16,000 |
| 2022-05-13 | Stewart Christopher P. | Officer | +Exercise | 60,000 | $0.56 | $33,600 |
| 2022-05-12 | Holmlin R. Erik | Director,Officer | −Tax w/h | 50,141 | $1.41 | $70,699 |
| 2022-05-12 | OLDAKOWSKI MARK | Officer | −Tax w/h | 41,496 | $1.41 | $58,509 |
| 2021-12-30 | Shams Soheil | Officer | −Gift | 318,899 | — | — |
| 2021-11-29 | Holmlin R. Erik | Director,Officer | +Buy | 2,675 | $3.99 | $10,673 |
| 2021-11-29 | Holmlin R. Erik | Director,Officer | +Buy | 2,200 | $3.99 | $8,778 |
| 2021-11-29 | Holmlin R. Erik | Director,Officer | +Buy | 150 | $3.98 | $597 |
| 2021-11-19 | Stewart Christopher P. | Officer | +Exercise | 22,500 | $0.56 | $12,600 |
| 2021-10-18 | Shams Soheil | Officer | +Grant | 5,325,378 | — | — |
| 2021-05-26 | Stewart Christopher P. | Officer | +Exercise | 25,000 | $0.56 | $14,000 |
| 2021-05-12 | OLDAKOWSKI MARK | Officer | +Grant | 240,000 | — | — |
| 2021-05-12 | Holmlin R. Erik | Director,Officer | +Grant | 290,000 | — | — |
| 2021-05-12 | Holmlin R. Erik | Director,Officer | +Grant | 290,000 | — | — |
| 2021-01-22 | Stewart Christopher P. | Officer | +Grant | 8,000 | $6.00 | $48,000 |
| 2020-04-06 | TWOMEY CHRISTOPHER J | Director | +Grant | 45,000 | $0.32 | $14,400 |
| 2019-10-23 | TWOMEY CHRISTOPHER J | Director | +Grant | 9,500 | $0.85 | $8,075 |
| 2019-01-18 | Borodkin Mark | Officer | +Exercise | 6,000 | $1.30 | $7,800 |
| 2018-08-23 | BLAIR JAMES C | TenPercentOwner | +Buy | 15,000 | $6.13 | $91,950 |
| 2018-08-23 | BLAIR JAMES C | TenPercentOwner | +Conversion | 337,694 | $4.59 | $2M |
| 2018-08-23 | BLAIR JAMES C | TenPercentOwner | +Conversion | 591,184 | — | — |
| 2018-08-23 | VITULLO NICOLE | TenPercentOwner | +Conversion | 2,505 | $4.59 | $11,498 |
| 2018-08-23 | VITULLO NICOLE | TenPercentOwner | +Conversion | 4,386 | — | — |
| 2018-08-23 | TWOMEY CHRISTOPHER J | Director | +Buy | 10,000 | $6.13 | $61,300 |
| 2018-08-23 | Cao Han PHD | Officer | +Conversion | 2,433 | — | — |
| 2018-08-23 | Cao Han PHD | Officer | +Conversion | 101,918 | — | — |
| 2018-08-23 | Cao Han PHD | Officer | +Conversion | 5,941 | — | — |
| 2018-08-23 | Cao Han PHD | Officer | +Conversion | 1,231 | — | — |
| 2018-08-23 | WANG JUNFENG | Director,TenPercentOwner | +Conversion | 150,550 | — | — |
| 2018-08-23 | WANG JUNFENG | Director,TenPercentOwner | +Conversion | 637,984 | — | — |
| 2018-08-23 | WANG JUNFENG | Director,TenPercentOwner | +Conversion | 784,728 | — | — |
| 2018-08-23 | WANG JUNFENG | Director,TenPercentOwner | +Conversion | 1,134,000 | — | — |
| 2018-08-23 | WANG JUNFENG | Director,TenPercentOwner | +Conversion | 199,653 | — | — |
| 2018-08-23 | Zhou Quan | Director,TenPercentOwner | +Conversion | 1,134,000 | — | — |
| 2018-08-23 | Zhou Quan | Director,TenPercentOwner | +Conversion | 784,728 | — | — |
| 2018-08-23 | Zhou Quan | Director,TenPercentOwner | +Conversion | 150,550 | — | — |
| 2018-08-23 | Zhou Quan | Director,TenPercentOwner | +Conversion | 199,653 | — | — |
| 2018-08-23 | Zhou Quan | Director,TenPercentOwner | +Conversion | 637,984 | — | — |
| 2018-08-23 | LC Parallel Fund VI, L.P. | TenPercentOwner | +Conversion | 199,653 | — | — |
| 2018-08-23 | LC Parallel Fund VI, L.P. | TenPercentOwner | +Conversion | 1,134,000 | — | — |
| 2018-08-23 | LC Parallel Fund VI, L.P. | TenPercentOwner | +Conversion | 150,550 | — | — |
| 2018-08-23 | LC Parallel Fund VI, L.P. | TenPercentOwner | +Conversion | 637,984 | — | — |
| 2018-08-23 | LC Parallel Fund VI, L.P. | TenPercentOwner | +Conversion | 784,728 | — | — |
| 2018-08-23 | Borodkin Mark | Officer | +Buy | 815 | $6.13 | $4,996 |
| 2018-08-23 | Holmlin R. Erik | Director,Officer | +Buy | 1,630 | $6.13 | $9,992 |
| 2018-08-21 | BARKER DAVID L | Director | +Buy | 3,894 | $6.47 | $25,194 |
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.
