SERA's three largest insider shareholders as of September 29, 2026 are Gregory C Critchfield (Chief Executive Officer, 846.89K shares), Zhenya Lindgardt (Chief Executive Officer, 837.85K shares), Austin Aerts (Chief Financial Officer, 301.19K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Gregory C Critchfield | Chief Executive Officer | 846,886 | 0 | 846,886 | 23.7% | 14 Jul, 2026 |
| 2 | Zhenya Lindgardt | Chief Executive Officer | 837,848 | 0 | 837,848 | 23.5% | 11 Sep, 2026 |
| 3 | Austin Aerts | Chief Financial Officer | 301,190 | 0 | 301,190 | 8.4% | 15 Jun, 2026 |
| 4 | Ox Healthcare Partners, Llc Blue | TenPercentOwner | 0 | 256,665 | 256,665 | 7.2% | 19 Jul, 2022 |
| 5 | Paul Kearney | Chief Data Officer | 163,961 | 0 | 163,961 | 4.6% | 12 Mar, 2026 |
| 6 | Benjamin Jackson | General Counsel | 159,566 | 0 | 159,566 | 4.5% | 11 Sep, 2026 |
| 7 | John J. Boniface | Chief Scientific Officer | 145,842 | 0 | 145,842 | 4.1% | 12 Mar, 2026 |
| 8 | Scott Gleason | Chief Financial Officer | 117,924 | 0 | 117,924 | 3.3% | 01 Sep, 2026 |
| 9 | Tiffany Eul Davis Inglis | Chief Medical Officer | 91,589 | 0 | 91,589 | 2.6% | 11 Sep, 2026 |
| 10 | Mansoor Raza Mirza | Director | 81,937 | 0 | 81,937 | 2.3% | 14 Jul, 2026 |
| 11 | Joshua Phillips | Director | 81,691 | 0 | 81,691 | 2.3% | 14 Jul, 2026 |
| 12 | Robert Gardner Harrison | Chief Information Officer | 76,712 | 0 | 76,712 | 2.1% | 12 Mar, 2026 |
| 13 | Dyaarl Lee Jr. Anderson | Chief Commercial Officer | 76,198 | 0 | 76,198 | 2.1% | 11 Sep, 2026 |
| 14 | Kim P. Kamdar | Director | 58,420 | 0 | 58,420 | 1.6% | 14 Jul, 2026 |
| 15 | Jane F Barlow | Director | 47,088 | 0 | 47,088 | 1.3% | 14 Jul, 2026 |
| 16 | Mark Christopher Capone | Director | 44,379 | 0 | 44,379 | 1.2% | 14 Jul, 2026 |
| 17 | Sandra Aj Lawrence | Director | 41,175 | 0 | 41,175 | 1.2% | 14 Jul, 2026 |
| 18 | Jay M Moyes | Chief Financial Officer | 35,630 | 0 | 35,630 | 1.0% | 07 Mar, 2023 |
| 19 | Jeffrey Thomas Elliott | Director | 30,534 | 0 | 30,534 | 0.9% | 21 Mar, 2025 |
| 20 | Michael R Foley | Chief Medical Officer | 27,000 | 0 | 27,000 | 0.8% | 07 Mar, 2023 |
| 21 | Ryan Trimble | Director | 22,713 | 0 | 22,713 | 0.6% | 06 Jun, 2025 |
| 22 | Nadia Altomare | Chief Commercial Officer | 18,300 | 0 | 18,300 | 0.5% | 07 Mar, 2023 |
| 23 | Marcus Dean Wilson | Director | 7,117 | 0 | 7,117 | 0.2% | 15 Jul, 2024 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 10 Sep, 2026 | Tiffany Eul Davis Inglis | Chief Medical Officer | Disposed S | 486 | $2.00 | $972 | 91,589 | Direct |
| 10 Sep, 2026 | Benjamin Jackson | General Counsel | Disposed S | 2,190 | $2.00 | $4.38K | 159,566 | Direct |
| 10 Sep, 2026 | Dyaarl Lee Jr. Anderson | Chief Commercial Officer | Disposed S | 1,800 | $2.00 | $3.60K | 76,198 | Direct |
| 10 Sep, 2026 | Zhenya Lindgardt | Chief Executive Officer | Disposed S | 7,022 | $2.00 | $14.04K | 837,848 | Direct |
| 08 Sep, 2026 | Zhenya Lindgardt | Chief Executive Officer | Disposed S | 20,139 | $2.00 | $40.28K | 844,870 | Direct |
| 31 Aug, 2026 | Scott Gleason | Chief Financial Officer | Acquired A | 117,924 | $0.00 | $0 | 117,924 | Direct |
| 31 Aug, 2026 | Scott Gleason | Chief Financial Officer | Acquired A | 169,624 | $0.00 | $0 | 169,624 | Direct |
| 10 Jul, 2026 | Mansoor Raza Mirza | Director | Acquired A | 22,426 | $0.00 | $0 | 80,166 | Direct |
| 10 Jul, 2026 | Sandra Aj Lawrence | Director | Acquired A | 22,426 | $0.00 | $0 | 38,899 | Direct |
| 10 Jul, 2026 | Gregory C Critchfield | Director | Acquired A | 22,426 | $0.00 | $0 | 845,292 | Direct |
| 10 Jul, 2026 | Jane F Barlow | Director | Acquired A | 22,426 | $0.00 | $0 | 45,139 | Direct |
| 10 Jul, 2026 | Kim P. Kamdar | Director | Acquired A | 22,426 | $0.00 | $0 | 54,999 | Direct |
| 10 Jul, 2026 | Mark Christopher Capone | Director | Acquired A | 42,404 | $0.00 | $0 | 42,404 | Direct |
| 10 Jul, 2026 | Joshua Phillips | Director | Acquired A | 22,426 | $0.00 | $0 | 79,431 | Direct |
| 10 Jul, 2026 | Sandra Aj Lawrence | Director | Acquired A | 2,276 | $0.00 | $0 | 41,175 | Direct |
| 10 Jul, 2026 | Mansoor Raza Mirza | Director | Acquired A | 1,771 | $0.00 | $0 | 81,937 | Direct |
| 10 Jul, 2026 | Gregory C Critchfield | Director | Acquired A | 1,594 | $0.00 | $0 | 846,886 | Direct |
| 10 Jul, 2026 | Jane F Barlow | Director | Acquired A | 1,949 | $0.00 | $0 | 47,088 | Direct |
| 10 Jul, 2026 | Mark Christopher Capone | Director | Acquired A | 1,975 | $0.00 | $0 | 44,379 | Direct |
| 10 Jul, 2026 | Kim P. Kamdar | Director | Acquired A | 3,421 | $0.00 | $0 | 58,420 | Direct |