Rainer M. Erdtmann bought Biomea Fusion Inc. ($BMEA) shares on the open market three times over the past year, for a total of about $98,000. His most recent purchase was on December 11, 2025. Among 4,983 insiders tracking open market buys, his total ranks 2,407th, well below the average of $1.5 million across 3.29 transactions per person. He made no open market sales in the last 365 days.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 1, 2026 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | A | Stock Option (Right to Buy) | 452512 | $0.00 | 452,512.0000 | 70,703,639 | 9999.99% | 0.64% |
| Dec. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 50000 | $0.00 | 2,022,030.0000 | 70,703,639 | 2.54% | 0.07% |
| Dec. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 50000 | $0.00 | 2,072,030.0000 | 70,703,639 | 2.36% | 0.07% |
| Dec. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 50600 | $0.00 | 2,022,030.0000 | 70,703,639 | 2.57% | 0.07% |
| Dec. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 50600 | $0.00 | 2,122,030.0000 | 70,703,639 | 2.33% | 0.07% |
| Dec. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 50000 | $0.00 | 2,022,030.0000 | 70,703,639 | 2.41% | 0.07% |
| Dec. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 50000 | $0.00 | 2,022,030.0000 | 70,703,639 | 2.54% | 0.07% |
| Dec. 11, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | P | Common Stock | 30000 | $1.43 | 2,572,820.0000 | 70,703,639 | 1.18% | 0.04% |
| Nov. 28, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | P | Common Stock | 40000 | $1.10 | 2,532,820.0000 | 70,703,639 | 1.60% | 0.06% |
| Dec. 1, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | P | Common Stock | 10000 | $1.05 | 2,542,820.0000 | 70,703,639 | 0.39% | 0.01% |
| Jan. 28, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 40000 | $0.00 | 2,503,420.0000 | 0 | 1.57% | 0.00% |
| Jan. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 10000 | $0.00 | 2,493,420.0000 | 0 | 0.40% | 0.00% |
| Jan. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 10000 | $0.00 | 2,472,820.0000 | 0 | 0.41% | 0.00% |
| Jan. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 10000 | $0.00 | 2,483,420.0000 | 0 | 0.40% | 0.00% |
| Jan. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 10000 | $0.00 | 2,473,420.0000 | 0 | 0.41% | 0.00% |
| Jan. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 10000 | $0.00 | 2,473,420.0000 | 0 | 0.40% | 0.00% |
| Jan. 31, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | G | Common Stock | 10000 | $0.00 | 2,473,420.0000 | 0 | 0.41% | 0.00% |
| Aug. 11, 2025 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | See Remarks | A | Stock Option (Right to Buy) | 1246989 | $0.00 | 1,246,989.0000 | 37,572,250 | 9999.99% | 3.32% |
| Jan. 17, 2024 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | A | Stock Option (Right to Buy) | 135700 | $0.00 | 135,700.0000 | 0 | 9999.99% | 0.00% |
| Dec. 29, 2023 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | G | Common Stock | 12000 | $0.00 | 2,523,420.0000 | 0 | 0.47% | 0.00% |
| Dec. 29, 2023 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | G | Common Stock | 3000 | $0.00 | 2,523,420.0000 | 0 | 0.12% | 0.00% |
| Dec. 29, 2023 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | G | Common Stock | 3000 | $0.00 | 2,535,420.0000 | 0 | 0.12% | 0.00% |
| Dec. 29, 2023 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | G | Common Stock | 3000 | $0.00 | 2,523,420.0000 | 0 | 0.12% | 0.00% |
| Dec. 29, 2023 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | G | Common Stock | 3000 | $0.00 | 2,538,420.0000 | 0 | 0.12% | 0.00% |
| Dec. 29, 2023 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | G | Common Stock | 3000 | $0.00 | 2,522,820.0000 | 0 | 0.12% | 0.00% |
| Dec. 29, 2023 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | G | Common Stock | 3000 | $0.00 | 2,541,420.0000 | 0 | 0.12% | 0.00% |
| Dec. 28, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 70000 | $0.00 | 2,538,420.0000 | 0 | 2.68% | 0.00% |
| Aug. 16, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 17100 | $0.00 | 2,636,420.0000 | 0 | 0.64% | 0.00% |
| July 1, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 100000 | $0.00 | 2,653,520.0000 | 0 | 3.63% | 0.00% |
| Aug. 19, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 16000 | $0.00 | 2,620,420.0000 | 0 | 0.61% | 0.00% |
| April 15, 2021 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | P | Common Stock | 3000 | $17.00 | 6,000.0000 | 0 | 100.00% | 0.00% |
| Dec. 28, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 4000 | $0.00 | 2,616,420.0000 | 0 | 0.15% | 0.00% |
| April 15, 2021 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | P | Common Stock | 2400 | $17.00 | 5,400.0000 | 0 | 80.00% | 0.00% |
| April 15, 2021 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | P | Common Stock | 3000 | $17.00 | 6,000.0000 | 0 | 100.00% | 0.00% |
| Dec. 28, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 4000 | $0.00 | 2,537,820.0000 | 0 | 0.16% | 0.00% |
| Dec. 28, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 4000 | $0.00 | 2,612,420.0000 | 0 | 0.15% | 0.00% |
| Dec. 28, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 4000 | $0.00 | 2,538,420.0000 | 0 | 0.16% | 0.00% |
| Dec. 28, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 4000 | $0.00 | 2,608,420.0000 | 0 | 0.15% | 0.00% |
| Dec. 28, 2022 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President & COO | G | Common Stock | 4000 | $0.00 | 2,538,420.0000 | 0 | 0.16% | 0.00% |
| Jan. 6, 2023 | Biomea Fusion, Inc. | $BMEA | Erdtmann Rainer M | President and COO | A | Stock Option (Right to Buy) | 118000 | $0.00 | 118,000.0000 | 0 | 9999.99% | 0.00% |