Seer's top three insider shareholders as of August 29, 2026 are Omid Farokhzad (Ceo And Chair, 3.35Mn shares), Omid Farokhzad (Ceo And Chair, 2.12Mn shares), Robert Langer (Director, 821.02K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Omid Farokhzad | Ceo And Chair | 3,349,064 | 0 | 3,349,064 | 49.5% | 19 Feb, 2026 |
| 2 | Robert Langer | Director | 804,525 | 0 | 804,525 | 11.9% | 09 Jul, 2025 |
| 3 | David R. Horn | President Cfo | 493,959 | 0 | 493,959 | 7.3% | 21 May, 2026 |
| 4 | Omead Ostadan | President Coo | 378,238 | 0 | 378,238 | 5.6% | 01 Jun, 2022 |
| 5 | David Hallal | Director | 355,128 | 0 | 355,128 | 5.2% | 14 Jun, 2024 |
| 6 | Elona Kogan | Chief Legal Officer | 273,142 | 0 | 273,142 | 4.0% | 23 Feb, 2024 |
| 7 | Mostafa Ronaghi | Director | 224,903 | 0 | 224,903 | 3.3% | 16 Jun, 2023 |
| 8 | Cathy Friedman | Director | 173,574 | 0 | 173,574 | 2.6% | 16 Jun, 2023 |
| 9 | Terrance Mcguire | Director | 128,566 | 0 | 128,566 | 1.9% | 30 Jul, 2026 |
| 10 | Meeta Gulyani | Director | 124,043 | 0 | 124,043 | 1.8% | 30 Jul, 2026 |
| 11 | Scott D Thomas | Chief Commercial Officer | 95,532 | 0 | 95,532 | 1.4% | 19 May, 2023 |
| 12 | Rachel E. Haurwitz | Director | 87,615 | 0 | 87,615 | 1.3% | 14 Jun, 2024 |
| 13 | Dipchand Nishar | Director | 75,544 | 0 | 75,544 | 1.1% | 30 Jul, 2026 |
| 14 | Anthony R. Bazarko | Chief Commercial Officer | 75,000 | 0 | 75,000 | 1.1% | 11 May, 2026 |
| 15 | Nicolas H Phd Roelofs | Director | 74,996 | 0 | 74,996 | 1.1% | 09 Jul, 2025 |
| 16 | Isaac Ro | Director | 53,375 | 0 | 53,375 | 0.8% | 30 Jul, 2026 |
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 |
|---|---|---|---|---|---|---|---|---|
| 28 Jul, 2026 | Meeta Gulyani | Director | Acquired A | 16,500 | $0.00 | $0 | 124,043 | Direct |
| 28 Jul, 2026 | Isaac Ro | Director | Acquired A | 12,375 | $0.00 | $0 | 53,375 | Direct |
| 28 Jul, 2026 | Dipchand Nishar | Director | Acquired A | 16,500 | $0.00 | $0 | 75,544 | Direct |
| 28 Jul, 2026 | Terrance Mcguire | Director | Acquired A | 16,500 | $0.00 | $0 | 128,566 | Direct |
| 28 Jul, 2026 | Isaac Ro | Director | Acquired A | 18,750 | $0.00 | $0 | 18,750 | Direct |
| 28 Jul, 2026 | Meeta Gulyani | Director | Acquired A | 25,000 | $0.00 | $0 | 25,000 | Direct |
| 28 Jul, 2026 | Dipchand Nishar | Director | Acquired A | 25,000 | $0.00 | $0 | 25,000 | Direct |
| 28 Jul, 2026 | Terrance Mcguire | Director | Acquired A | 25,000 | $0.00 | $0 | 25,000 | Direct |
| 08 Jul, 2026 | Dipchand Nishar | Director | Disposed S | 10,660 | $2.18 | $23.27K | 59,044 | Direct |
| 20 May, 2026 | David R. Horn | President Cfo | Disposed S | 7,303 | $1.69 | $12.35K | 493,959 | Direct |
| 08 May, 2026 | Anthony R. Bazarko | Chief Commercial Officer | Acquired A | 75,000 | — | — | 75,000 | Direct |
| 08 May, 2026 | Anthony R. Bazarko | Chief Commercial Officer | Acquired A | 225,000 | $0.00 | $0 | 225,000 | Direct |
| 18 Feb, 2026 | Omid Farokhzad | Ceo And Chair | Disposed S | 24,385 | $1.99 | $48.65K | 3,349,064 | Direct |
| 18 Feb, 2026 | David R. Horn | President Cfo | Disposed S | 7,743 | $1.99 | $15.45K | 501,262 | Direct |
| 03 Feb, 2026 | Omid Farokhzad | Ceo And Chair | Acquired A | 697,162 | $0.00 | $0 | 3,373,449 | Direct |
| 03 Feb, 2026 | David R. Horn | President Cfo | Acquired A | 79,000 | $0.00 | $0 | 509,005 | Direct |
| 03 Feb, 2026 | David R. Horn | President Cfo | Acquired A | 119,000 | $0.00 | $0 | 119,000 | Direct |
| 03 Feb, 2026 | Omid Farokhzad | Ceo And Chair | Acquired A | 512,000 | $0.00 | $0 | 512,000 | Direct |
| 09 Dec, 2025 | Terrance Mcguire | Director | Acquired C | 4,088 | — | — | 215,070 | Indirect |
| 09 Dec, 2025 | Omid Farokhzad | Ceo And Chair | Acquired C | 1,438,057 | — | — | 2,676,287 | Direct |