Over the past 12 months, Cero Therapeutics Holdings insiders made no open-market purchases or sales of the stock.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Brian G Atwood | Director | 0 | 24,527 | 24,527 | 53.9% | 04 Apr, 2025 |
| 2 | Stuart M Sloan | TenPercentOwner | 0 | 10,534 | 10,534 | 23.2% | 20 Nov, 2024 |
| 3 | Bioventures Opportunities Gp I, Llc Yk | TenPercentOwner | 0 | 6,503 | 6,503 | 14.3% | 13 Dec, 2024 |
| 4 | Christopher B Ehrlich | Interim Chairman And Ceo | 2,896 | 0 | 2,896 | 6.4% | 02 Oct, 2024 |
| 5 | Biotech Sponsor, Llc Phoenix | TenPercentOwner | 500 | 0 | 500 | 1.1% | 16 Feb, 2024 |
| 6 | Kathleen Laporte | Director | 0 | 483 | 483 | 1.1% | 02 Oct, 2024 |
| 7 | Douglas Carl Fisher | President | 22 | 0 | 22 | 0.0% | 16 Feb, 2024 |
| 8 | Daniel E. Geffken | Chief Financial Officer | 5 | 0 | 5 | 0.0% | 16 Feb, 2024 |
| 9 | Barbara Kosacz | Director | 3 | 0 | 3 | 0.0% | 16 Feb, 2024 |
| 10 | Caroline M Loewy | Director | 3 | 0 | 3 | 0.0% | 16 Feb, 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 |
|---|---|---|---|---|---|---|---|---|
| 04 Mar, 2026 | Eric Francois | Director | Acquired A | 1,823,278 | $0.00 | $0 | 1,823,278 | Direct |
| 07 Jan, 2026 | Kathleen Laporte | Director | Acquired A | 690,900 | $0.00 | $0 | 690,900 | Direct |
| 07 Jan, 2026 | Christopher B Ehrlich | Chairman And Ceo | Acquired A | 4,530,997 | $0.00 | $0 | 4,530,997 | Direct |
| 07 Jan, 2026 | Shami Patel | Director | Acquired A | 690,900 | $0.00 | $0 | 690,900 | Direct |
| 07 Jan, 2026 | Michael Byrnes | Director | Acquired A | 690,900 | $0.00 | $0 | 690,900 | Direct |
| 07 Jan, 2026 | Kristen Pierce | Chief Development Officer | Acquired A | 1,612,099 | $0.00 | $0 | 1,612,099 | Direct |
| 07 Jan, 2026 | Lindsey Rolfe | Director | Acquired A | 690,900 | $0.00 | $0 | 690,900 | Direct |
| 07 Jan, 2026 | Andrew Albert Kucharchuk | Chief Financial Officer | Acquired A | 1,162,099 | $0.00 | $0 | 1,162,099 | Direct |
| 07 Jan, 2026 | Brian G Atwood | Director | Acquired A | 1,612,099 | $0.00 | $0 | 1,612,099 | Direct |
| 30 May, 2025 | Shami Patel | Director | Acquired A | 11,693 | $0.00 | $0 | 585 | Direct |
| 30 May, 2025 | Andrew Albert Kucharchuk | Chief Financial Officer | Acquired A | 152,500 | $0.00 | $0 | 7,625 | Direct |
| 30 May, 2025 | Christopher B Ehrlich | Chairman And Ceo | Acquired A | 61,843 | $0.00 | $0 | 3,092 | Direct |
| 30 May, 2025 | Michael Byrnes | Director | Acquired A | 9,326 | $0.00 | $0 | 466 | Direct |
| 30 May, 2025 | Kristen Pierce | Chief Development Officer | Acquired A | 154,841 | $0.00 | $0 | 7,742 | Direct |
| 30 May, 2025 | Kathleen Laporte | Director | Acquired A | 9,326 | $0.00 | $0 | 466 | Direct |
| 30 May, 2025 | Brian G Atwood | Director | Acquired A | 122,549 | $0.00 | $0 | 6,127 | Direct |
| 30 May, 2025 | Lindsey Rolfe | Director | Acquired A | 9,326 | $0.00 | $0 | 466 | Direct |
| 31 Mar, 2025 | Brian G Atwood | Director | Acquired M | 294,460 | $0.00 | $589 | 24,527 | Indirect |
| 31 Mar, 2025 | Brian G Atwood | Director | Acquired M | 294,460 | $0.00 | $589 | 583 | Direct |
| 04 Mar, 2025 | Brian G Atwood | Director | Acquired A | 14,936 | $0.00 | $0 | 747 | Direct |