Byrnes Michael has filed 8 insider transactions across 2 companies since February 2024.
Most recent transaction: a grant/award of 690900 shares of CERO THERAPEUTICS HOLDINGS, INC. ($CERO) on January 07, 2026.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 7, 2026 | CERO THERAPEUTICS HOLDINGS, INC. | $CERO | Byrnes Michael | Director | A | Stock Option (Right to Buy) | 690900 | $0.00 | 690,900.0000 | 1,264,884 | 9999.99% | 54.62% |
| May 30, 2025 | CERO THERAPEUTICS HOLDINGS, INC. | $CERO | Byrnes Michael | Director | A | Stock Option (Right to Buy) | 9326 | $0.00 | 9,326.0000 | 3,427,616 | 9999.99% | 0.27% |
| March 4, 2025 | CERO THERAPEUTICS HOLDINGS, INC. | $CERO | Byrnes Michael | Director | A | Stock Option (Right to Buy) | 17923 | $0.00 | 17,923.0000 | 579,432 | 9999.99% | 3.09% |
| Feb. 24, 2025 | CERO THERAPEUTICS HOLDINGS, INC. | $CERO | Byrnes Michael | Director | A | Stock Option (Right to Buy) | 127500 | $0.00 | 255,000.0000 | 579,432 | 100.00% | 22.00% |
| Dec. 2, 2024 | CERO THERAPEUTICS HOLDINGS, INC. | $CERO | Byrnes Michael | Director | A | Stock Option (Right to Buy) | 127500 | $0.00 | 127,500.0000 | 24,838 | 9999.99% | 100.00% |
| May 15, 2024 | eFFECTOR Therapeutics, Inc. | $EFTR | Byrnes Michael | Chief Financial Officer | A | Common Stock | 1387 | $1.68 | 3,117.0000 | 4,704,409 | 80.17% | 0.03% |
| March 25, 2024 | CERO THERAPEUTICS HOLDINGS, INC. | $CERO | Byrnes Michael | Director | A | Stock Option (Right to Buy) | 112500 | $0.00 | 112,500.0000 | 292 | 9999.99% | 100.00% |
| Feb. 19, 2024 | eFFECTOR Therapeutics, Inc. | $EFTR | Byrnes Michael | Chief Financial Officer | A | Stock Option (Right to Buy) | 40000 | $0.00 | 40,000.0000 | 0 | 9999.99% | 0.00% |