As of September 29, 2026, Biomerica's top three insider holders are Zackary S. Irani (Chief Executive Officer, 242.57K shares), Zackary S. Irani (Chief Executive Officer, 127.57K shares), Allen Barbieri (Executive Vice Chairman, 73.54K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Zackary S. Irani | Chief Executive Officer | 370,140 | 0 | 370,140 | 53.8% | 26 Aug, 2026 |
| 2 | Allen Barbieri | Executive Vice Chairman | 86,208 | 0 | 86,208 | 12.5% | 26 Aug, 2026 |
| 3 | Gary Lu | Chief Financial Officer | 59,375 | 0 | 59,375 | 8.6% | 31 Dec, 2025 |
| 4 | M. Huff Gary | Director | 51,250 | 0 | 51,250 | 7.5% | 26 Aug, 2026 |
| 5 | David Moatazedi | Director | 40,625 | 0 | 40,625 | 5.9% | 26 Aug, 2026 |
| 6 | Eric Chin | Director | 38,750 | 0 | 38,750 | 5.6% | 26 Aug, 2026 |
| 7 | Catherine Coste | Director | 21,573 | 0 | 21,573 | 3.1% | 16 Dec, 2024 |
| 8 | Jane Emerson | Director | 19,500 | 0 | 19,500 | 2.8% | 16 Dec, 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 |
|---|---|---|---|---|---|---|---|---|
| 26 Aug, 2026 | Zackary S. Irani | Chief Executive Officer | Acquired P | 31,250 | $1.60 | $50.00K | 242,570 | Direct |
| 20 Aug, 2026 | M. Huff Gary | Director | Acquired P | 31,250 | $1.60 | $50.00K | 51,250 | Direct |
| 26 Aug, 2026 | David Moatazedi | Director | Acquired P | 10,000 | $1.60 | $16.00K | 40,625 | Direct |
| 26 Aug, 2026 | Eric Chin | Director | Acquired P | 6,250 | $1.60 | $10.00K | 38,750 | Direct |
| 26 Aug, 2026 | Allen Barbieri | Executive Vice Chairman | Acquired P | 20,000 | $1.60 | $32.00K | 73,542 | Direct |
| 12 Dec, 2025 | Eric Chin | Director | Acquired A | 22,500 | $0.00 | $0 | 32,500 | Direct |
| 12 Dec, 2025 | Zackary S. Irani | Chief Executive Officer | Acquired A | 52,500 | $0.00 | $0 | 211,320 | Direct |
| 12 Dec, 2025 | David Moatazedi | Director | Acquired A | 20,000 | $0.00 | $0 | 30,625 | Direct |
| 12 Dec, 2025 | Gary Lu | Chief Financial Officer | Acquired A | 40,000 | $0.00 | $0 | 59,375 | Direct |
| 12 Dec, 2025 | Allen Barbieri | Executive Vice Chairman | Acquired A | 30,000 | $0.00 | $0 | 53,543 | Direct |
| 12 Dec, 2025 | M. Huff Gary | Director | Acquired A | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 13 Dec, 2024 | David Moatazedi | Director | Acquired A | 85,000 | $2.48 | $210.80K | 10,625 | Direct |
| 13 Dec, 2024 | Catherine Coste | Director | Acquired A | 85,000 | $2.48 | $210.80K | 16,099 | Direct |
| 13 Dec, 2024 | Gary Lu | Chief Financial Officer | Acquired A | 155,000 | $2.48 | $384.40K | 19,375 | Direct |
| 13 Dec, 2024 | Zackary S. Irani | Chief Executive Officer | Acquired A | 250,000 | $2.48 | $620.00K | 158,820 | Direct |
| 13 Dec, 2024 | Jane Emerson | Director | Acquired A | 85,000 | $2.48 | $210.80K | 19,500 | Direct |
| 13 Dec, 2024 | Allen Barbieri | Executive Vice Chairman | Acquired A | 110,000 | $2.48 | $272.80K | 23,542 | Direct |
| 13 Dec, 2023 | Zackary S. Irani | Chief Executive Officer | Acquired A | 155,000 | — | — | 19,375 | Direct |
| 13 Dec, 2023 | Jane Emerson | Director | Acquired A | 75,000 | — | — | 9,375 | Direct |
| 13 Dec, 2023 | David Moatazedi | Director | Acquired A | 75,000 | — | — | 9,375 | Direct |