As of June 06, 2026, Seer's top three insider holders are Omid Farokhzad (Ceo And Chair, 3.35Mn shares), Omid Farokhzad (Ceo And Chair, 2.12Mn shares), Robert Langer (Director, 804.52K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Terrance Mcguire | - | 0 | 215,070 | 11 Dec, 2025 |
| Robert Langer | - | 804,525 | 0 | 09 Jul, 2025 |
| Nicolas H Phd Roelofs | - | 74,996 | 0 | 09 Jul, 2025 |
| Cathy Friedman | - | 173,574 | 0 | 16 Jun, 2023 |
| Mostafa Ronaghi | - | 224,903 | 0 | 16 Jun, 2023 |
| David Hallal | - | 355,128 | 0 | 14 Jun, 2024 |
| Dipchand Nishar | - | 69,704 | 0 | 09 Jul, 2025 |
| Omid Farokhzad | Ceo And Chair | 3,349,064 | 0 | 19 Feb, 2026 |
| Omead Ostadan | President Coo | 378,238 | 0 | 01 Jun, 2022 |
| Rachel E. Haurwitz | - | 87,615 | 0 | 14 Jun, 2024 |
| Elona Kogan | Chief Legal Officer | 273,142 | 0 | 23 Feb, 2024 |
| David R. Horn | President Cfo | 501,262 | 0 | 19 Feb, 2026 |
| Isaac Ro | - | 41,000 | 0 | 03 Sep, 2025 |
| Meeta Gulyani | - | 107,543 | 0 | 09 Jul, 2025 |
| Scott D Thomas | Chief Commercial Officer | 95,532 | 0 | 19 May, 2023 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Feb, 2026 | David R. Horn | Class A Common Stock | D | 7,743 | $1.99 | 501,262 | D | S |
| 18 Feb, 2026 | Omid Farokhzad | Class A Common Stock | D | 24,385 | $1.99 | 3,349,064 | D | S |
| 03 Feb, 2026 | David R. Horn | Class A Common Stock | A | 79,000 | $0.00 | 509,005 | D | A |
| 03 Feb, 2026 | Omid Farokhzad | Class A Common Stock | A | 697,162 | $0.00 | 3,373,449 | D | A |
| 03 Feb, 2026 | David R. Horn | Employee Stock Option (right to buy) | A | 119,000 | $0.00 | 119,000 | D | A |
| 03 Feb, 2026 | Omid Farokhzad | Employee Stock Option (right to buy) | A | 512,000 | $0.00 | 512,000 | D | A |
| 09 Dec, 2025 | Omid Farokhzad | Class A Common Stock | A | 1,438,057 | - | 2,676,287 | D | C |
| 09 Dec, 2025 | Terrance Mcguire | Class A Common Stock | A | 4,088 | - | 215,070 | I | C |
| 09 Dec, 2025 | Omid Farokhzad | Class A Common Stock | A | 2,117,138 | - | 2,117,138 | I | C |
| 09 Dec, 2025 | Omid Farokhzad | Class B Common Stock | D | 1,438,057 | $0.00 | 0 | D | C |
| 09 Dec, 2025 | Omid Farokhzad | Class B Common Stock | D | 2,117,138 | $0.00 | 0 | I | C |
| 09 Dec, 2025 | Terrance Mcguire | Class B Common Stock | D | 4,088 | $0.00 | 0 | I | C |
| 19 Nov, 2025 | David R. Horn | Class A Common Stock | D | 6,797 | $1.97 | 436,802 | D | S |
| 19 Nov, 2025 | Omid Farokhzad | Class A Common Stock | D | 33,838 | $1.97 | 1,238,230 | D | S |
| 02 Sep, 2025 | Isaac Ro | Class A Common Stock | A | 41,000 | $0.00 | 41,000 | D | A |
| 02 Sep, 2025 | Isaac Ro | Stock Option (right to buy) | A | 61,000 | $0.00 | 61,000 | D | A |
| 20 Aug, 2025 | David R. Horn | Class A Common Stock | D | 6,827 | $2.04 | 436,802 | D | S |
| 20 Aug, 2025 | Omid Farokhzad | Class A Common Stock | D | 33,992 | $2.04 | 1,272,068 | D | S |
| 07 Jul, 2025 | Terrance Mcguire | Class A Common Stock | A | 20,500 | $0.00 | 112,066 | D | A |
| 07 Jul, 2025 | Meeta Gulyani | Class A Common Stock | A | 20,500 | $0.00 | 107,543 | D | A |