As of May 14, 2026, the three largest insider holders of SERA are Zhenya Lindgardt (Chief Executive Officer, 892.75K shares), Gregory C Critchfield (Chief Executive Officer, 822.87K shares), Austin Aerts (Chief Financial Officer, 308.67K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Zhenya Lindgardt | Chief Executive Officer | 892,754 | 0 | 13 Mar, 2026 |
| Gregory C Critchfield | Chief Executive Officer | 822,866 | 0 | 06 Jun, 2025 |
| Austin Aerts | Chief Financial Officer | 308,667 | 0 | 13 Mar, 2026 |
| Ox Healthcare Partners, Llc Blue | - | 0 | 256,665 | 19 Jul, 2022 |
| Paul Kearney | Chief Data Officer | 163,961 | 0 | 12 Mar, 2026 |
| Benjamin Jackson | General Counsel | 158,935 | 0 | 13 Mar, 2026 |
| John J. Boniface | Chief Scientific Officer | 145,842 | 0 | 12 Mar, 2026 |
| Ryan Trimble | - | 0 | 100,554 | 21 Jul, 2021 |
| Tiffany Eul Davis Inglis | Chief Medical Officer | 92,437 | 0 | 13 Mar, 2026 |
| Dyaarl Lee Jr. Anderson | Chief Commercial Officer | 79,569 | 0 | 13 Mar, 2026 |
| Robert Gardner Harrison | Chief Information Officer | 76,712 | 0 | 12 Mar, 2026 |
| Mansoor Raza Mirza | - | 57,740 | 0 | 05 Dec, 2025 |
| Joshua Phillips | - | 57,005 | 0 | 06 Jun, 2025 |
| Jay M Moyes | Chief Financial Officer | 35,630 | 0 | 07 Mar, 2023 |
| Kim P. Kamdar | - | 32,573 | 0 | 04 Feb, 2026 |
| Jeffrey Thomas Elliott | - | 30,534 | 0 | 21 Mar, 2025 |
| Michael R Foley | Chief Medical Officer | 27,000 | 0 | 07 Mar, 2023 |
| Jane F Barlow | - | 22,713 | 0 | 06 Jun, 2025 |
| Ryan Trimble | - | 22,713 | 0 | 06 Jun, 2025 |
| Nadia Altomare | Chief Commercial Officer | 18,300 | 0 | 07 Mar, 2023 |
| Sandra Aj Lawrence | - | 18,033 | 0 | 06 Mar, 2026 |
| Marcus Dean Wilson | - | 7,117 | 0 | 15 Jul, 2024 |
| Joshua Phillips | - | 0 | 2,297 | 05 Jun, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 12 Mar, 2026 | Benjamin Jackson | Class A Common Stock | A | 44,215 | $0.00 | 158,935 | D | A |
| 12 Mar, 2026 | Zhenya Lindgardt | Class A Common Stock | A | 154,440 | $0.00 | 892,754 | D | A |
| 12 Mar, 2026 | Tiffany Eul Davis Inglis | Class A Common Stock | A | 17,437 | $0.00 | 92,437 | D | A |
| 12 Mar, 2026 | Dyaarl Lee Jr. Anderson | Class A Common Stock | A | 12,455 | $0.00 | 79,569 | D | A |
| 12 Mar, 2026 | Austin Aerts | Class A Common Stock | A | 44,215 | $0.00 | 308,667 | D | A |
| 12 Mar, 2026 | Austin Aerts | Stock Option (right to buy) | A | 68,550 | $0.00 | 68,550 | D | A |
| 12 Mar, 2026 | Zhenya Lindgardt | Stock Option (right to buy) | A | 239,442 | $0.00 | 239,442 | D | A |
| 12 Mar, 2026 | Benjamin Jackson | Stock Option (right to buy) | A | 68,550 | $0.00 | 68,550 | D | A |
| 12 Mar, 2026 | Tiffany Eul Davis Inglis | Stock Option (right to buy) | A | 27,034 | $0.00 | 27,034 | D | A |
| 12 Mar, 2026 | Dyaarl Lee Jr. Anderson | Stock Option (right to buy) | A | 19,310 | $0.00 | 19,310 | D | A |
| 10 Mar, 2026 | Zhenya Lindgardt | Class A Common Stock | D | 22,639 | $1.90 | 741,287 | D | S |
| 11 Mar, 2026 | John J. Boniface | Class A Common Stock | D | 1,517 | $2.04 | 145,842 | D | S |
| 11 Mar, 2026 | Robert Gardner Harrison | Class A Common Stock | D | 716 | $2.04 | 76,712 | D | S |
| 11 Mar, 2026 | Paul Kearney | Class A Common Stock | D | 1,396 | $2.04 | 163,961 | D | S |
| 10 Mar, 2026 | Austin Aerts | Class A Common Stock | D | 6,069 | $1.90 | 265,471 | D | S |
| 11 Mar, 2026 | Benjamin Jackson | Class A Common Stock | D | 1,027 | $2.04 | 114,720 | D | S |
| 11 Mar, 2026 | Zhenya Lindgardt | Class A Common Stock | D | 2,973 | $2.04 | 738,314 | D | S |
| 11 Mar, 2026 | Austin Aerts | Class A Common Stock | D | 1,019 | $2.04 | 264,452 | D | S |
| 09 Mar, 2026 | Austin Aerts | Class A Common Stock | D | 674 | $1.96 | 271,540 | D | S |
| 09 Mar, 2026 | John J. Boniface | Class A Common Stock | D | 3,038 | $1.96 | 147,359 | D | S |