Exagen's top three insider shareholders as of September 29, 2026 are Co-Investment Fund, L.P. Nmsic (TenPercentOwner, 1.76Mn shares), James L L Tullis (TenPercentOwner, 1.52Mn shares), John Aballi (President And Ceo, 839.83K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Co-Investment Fund, L.P. Nmsic | TenPercentOwner | 0 | 1,758,958 | 1,758,958 | 32.4% | 27 Mar, 2025 |
| 2 | James L L Tullis | TenPercentOwner | 0 | 1,515,839 | 1,515,839 | 27.9% | 20 Jun, 2023 |
| 3 | John Aballi | President And Ceo | 1,189,834 | 0 | 1,189,834 | 21.9% | 16 Mar, 2026 |
| 4 | Jeffrey G. Black | Chief Financial Officer | 324,910 | 0 | 324,910 | 6.0% | 02 Sep, 2026 |
| 5 | Kamal Adawi | Cfo And Corporate Secretary | 243,749 | 0 | 243,749 | 4.5% | 06 Mar, 2024 |
| 6 | Mark Hazeltine | Chief Business Officer | 190,205 | 0 | 190,205 | 3.5% | 03 Mar, 2023 |
| 7 | Fortunato R. Rocca | President And Ceo | 120,678 | 0 | 120,678 | 2.2% | 02 Mar, 2022 |
| 8 | Debra Zack | Chief Medical Officer | 84,259 | 0 | 84,259 | 1.6% | 02 Mar, 2022 |
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 |
|---|---|---|---|---|---|---|---|---|
| 01 Sep, 2026 | Jeffrey G. Black | Chief Financial Officer | Disposed S | 20,614 | $7.22 | $148.78K | 323,339 | Direct |
| 01 Sep, 2026 | Jeffrey G. Black | Chief Financial Officer | Acquired A | 1,571 | $3.02 | $4.74K | 324,910 | Direct |
| 09 Jun, 2026 | Bruce C Robertson | Director | Acquired A | 37,500 | $0.00 | $0 | 55,500 | Direct |
| 09 Jun, 2026 | Paul Kim | Director | Acquired A | 37,500 | $0.00 | $0 | 46,500 | Direct |
| 09 Jun, 2026 | Chas Mckhann | Director | Acquired A | 37,500 | $0.00 | $0 | 45,000 | Direct |
| 09 Jun, 2026 | Scott D Kahn | Director | Acquired A | 37,500 | $0.00 | $0 | 46,500 | Direct |
| 09 Jun, 2026 | Frank Stokes | Director | Acquired A | 37,500 | $0.00 | $0 | 112,500 | Direct |
| 12 Mar, 2026 | John Aballi | President And Ceo | Acquired A | 150,000 | $0.00 | $0 | 839,834 | Direct |
| 12 Mar, 2026 | Jeffrey G. Black | Chief Financial Officer | Acquired A | 75,000 | $3.16 | $237.00K | 342,442 | Direct |
| 27 Feb, 2026 | Jeffrey G. Black | Chief Financial Officer | Acquired A | 1,511 | $3.08 | $4.65K | 343,953 | Direct |
| 12 Mar, 2026 | Jeffrey G. Black | Chief Financial Officer | Acquired A | 50,000 | $3.16 | $158.00K | 60,000 | Direct |
| 12 Mar, 2026 | John Aballi | President And Ceo | Acquired A | 100,000 | $3.16 | $316.00K | 175,000 | Direct |
| 03 Mar, 2026 | John Aballi | President And Ceo | Disposed S | 15,698 | $3.62 | $56.83K | 687,299 | Direct |
| 03 Mar, 2026 | John Aballi | President And Ceo | Acquired A | 2,535 | $3.08 | $7.80K | 689,834 | Direct |
| 24 Feb, 2026 | Jeffrey G. Black | Chief Financial Officer | Disposed S | 1,584 | $3.61 | $5.72K | 267,442 | Direct |
| 24 Feb, 2026 | John Aballi | President And Ceo | Disposed S | 11,430 | $3.61 | $41.26K | 702,997 | Direct |
| 16 Oct, 2025 | John Aballi | President And Ceo | Disposed S | 31,787 | $11.82 | $375.60K | 714,427 | Direct |
| 02 Sep, 2025 | Jeffrey G. Black | Chief Financial Officer | Disposed S | 20,466 | $9.79 | $200.36K | 269,026 | Direct |
| 10 Jun, 2025 | Tina Susan Nova | Director | Acquired A | 13,500 | $0.00 | $0 | 13,500 | Direct |
| 10 Jun, 2025 | Ana Hooker | Director | Acquired A | 9,000 | $0.00 | $0 | 9,000 | Direct |