Rossi Michael J has filed 18 insider transactions across 2 companies since March 2023.
Most recent transaction: a disposition of 210700 shares of Y-mAbs Therapeutics, Inc. ($YMAB) on September 16, 2025.
Activity breakdown: 0 open-market purchases and 1 sale.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | D | Employee Stock Option (right to buy) | 210700 | $0.00 | 0.0000 | 45,318,028 | 100.00% | 0.46% |
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | D | Restricted Stock Units | 52650 | $0.00 | 0.0000 | 45,318,028 | 100.00% | 0.12% |
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | D | Restricted Stock Units | 52650 | $0.00 | 0.0000 | 45,318,028 | 100.00% | 0.12% |
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | D | Restricted Stock Units | 18000 | $0.00 | 0.0000 | 45,318,028 | 100.00% | 0.04% |
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | D | Restricted Stock Units | 18000 | $0.00 | 0.0000 | 45,318,028 | 100.00% | 0.04% |
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | D | Restricted Stock Units | 18000 | $0.00 | 0.0000 | 45,318,028 | 100.00% | 0.04% |
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | U | Common Stock | 7982 | $8.60 | 0.0000 | 45,318,028 | 100.00% | 0.02% |
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | D | Common Stock | 129101 | $0.00 | 0.0000 | 45,318,028 | 100.00% | 0.28% |
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | D | Employee Stock Option (right to buy) | 615240 | $0.00 | 0.0000 | 45,318,028 | 100.00% | 1.36% |
| Sept. 16, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | D | Employee Stock Option (right to buy) | 214200 | $0.00 | 0.0000 | 45,318,028 | 100.00% | 0.47% |
| March 7, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | S | Common Stock | 3917 | $5.20 | 137,083.0000 | 44,328,962 | 2.78% | 0.01% |
| Jan. 17, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | A | Employee Stock Option (right to buy) | 210700 | $0.00 | 210,700.0000 | 44,328,962 | 9999.99% | 0.48% |
| Jan. 17, 2025 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | A | Common Stock | 105300 | $0.00 | 141,000.0000 | 44,328,962 | 294.96% | 0.24% |
| Feb. 12, 2024 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | A | Restricted Stock Units | 54000 | $0.00 | 54,000.0000 | 43,645,388 | 9999.99% | 0.12% |
| Feb. 12, 2024 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | A | Employee Stock Option (right to buy) | 214200 | $0.00 | 214,200.0000 | 43,645,388 | 9999.99% | 0.49% |
| Feb. 12, 2024 | Y-mAbs Therapeutics, Inc. | $YMAB | Rossi Michael J | PRESIDENT & CEO | A | Common Stock | 35700 | $0.00 | 35,700.0000 | 43,645,388 | 9999.99% | 0.08% |
| Nov. 1, 2023 | Mirion Technologies, Inc. | $MIR | Rossi Michael J | Medical Group President | F | Class A Common Stock | 5514 | $6.93 | 116,173.0000 | 181,149,000 | 4.53% | 0.00% |
| March 29, 2023 | Mirion Technologies, Inc. | $MIR | Rossi Michael J | Medical Group President | A | Class A Common Stock | 41242 | $0.00 | 121,687.0000 | 181,149,000 | 51.27% | 0.02% |