Daniel Calkins, CFO of Verastem Inc. ($VSTM), sold shares on the open market nine times over the past year, totaling about $150,000. His most recent sale occurred on January 12, 2026. These $VSTM insider sales rank 8,985th among 11,678 individuals in our database, where the average is $8.6 million across 6.4 transactions. Calkins made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 20, 2026 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | A | Common Stock | 57 | $5.74 | 121,327.0000 | 69,309,000 | 0.05% | 0.00% |
| Jan. 21, 2026 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | A | Common Stock | 16665 | $0.00 | 121,384.0000 | 69,309,000 | 15.91% | 0.02% |
| Jan. 12, 2026 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 5039 | $7.16 | 104,719.0000 | 69,309,000 | 4.59% | 0.01% |
| Dec. 24, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 80 | $7.86 | 109,758.0000 | 73,157,000 | 0.07% | 0.00% |
| Sept. 24, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 25 | $9.23 | 109,838.0000 | 74,037,000 | 0.02% | 0.00% |
| Sept. 22, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 57 | $9.08 | 109,863.0000 | 74,037,000 | 0.05% | 0.00% |
| June 20, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 4110 | $5.13 | 109,945.0000 | 54,173,000 | 3.60% | 0.01% |
| June 23, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 25 | $4.71 | 109,920.0000 | 54,173,000 | 0.02% | 0.00% |
| May 16, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | A | Common Stock | 38850 | $0.00 | 125,198.0000 | 54,173,000 | 23.68% | 0.07% |
| May 20, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 11143 | $8.13 | 114,055.0000 | 54,173,000 | 8.90% | 0.02% |
| March 20, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 65 | $6.89 | 86,374.0000 | 35,713,000 | 0.08% | 0.00% |
| March 24, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 26 | $7.04 | 86,348.0000 | 35,713,000 | 0.03% | 0.00% |
| Jan. 10, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | A | Common Stock | 38800 | $0.00 | 86,439.0000 | 35,713,000 | 81.45% | 0.11% |
| Jan. 6, 2025 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 6 | $6.94 | 47,639.0000 | 35,713,000 | 0.01% | 0.00% |
| Dec. 20, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 65 | $4.34 | 47,396.0000 | 40,258,000 | 0.14% | 0.00% |
| Dec. 24, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 28 | $3.91 | 47,368.0000 | 40,258,000 | 0.06% | 0.00% |
| Oct. 7, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 6 | $2.86 | 47,461.0000 | 40,258,000 | 0.01% | 0.00% |
| Sept. 20, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 65 | $2.80 | 47,495.0000 | 26,861,000 | 0.14% | 0.00% |
| Sept. 24, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 28 | $2.68 | 47,467.0000 | 26,861,000 | 0.06% | 0.00% |
| July 9, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 7 | $2.62 | 47,560.0000 | 26,861,000 | 0.01% | 0.00% |
| June 24, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 28 | $3.15 | 47,290.0000 | 26,832,000 | 0.06% | 0.00% |
| June 20, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 67 | $3.16 | 47,318.0000 | 26,832,000 | 0.14% | 0.00% |
| June 18, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | A | Common Stock | 38850 | $0.00 | 47,385.0000 | 26,832,000 | 455.18% | 0.14% |
| April 5, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 6 | $10.87 | 8,535.0000 | 26,832,000 | 0.07% | 0.00% |
| March 25, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 25 | $12.02 | 8,541.0000 | 22,054,000 | 0.29% | 0.00% |
| March 20, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 55 | $11.07 | 8,566.0000 | 22,054,000 | 0.64% | 0.00% |
| March 11, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | A | Stock Option (right to buy) | 5413 | $0.00 | 5,413.0000 | 22,054,000 | 9999.99% | 0.02% |
| March 11, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | A | Stock Option (right to buy) | 1175 | $0.00 | 1,175.0000 | 22,054,000 | 9999.99% | 0.01% |
| March 11, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | D | Stock Option (right to buy) | 833 | $0.00 | 0.0000 | 22,054,000 | 100.00% | 0.00% |
| March 11, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | D | Stock Option (right to buy) | 631 | $0.00 | 0.0000 | 22,054,000 | 100.00% | 0.00% |
| March 11, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | D | Stock Option (right to buy) | 1666 | $0.00 | 0.0000 | 22,054,000 | 100.00% | 0.01% |
| March 11, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | D | Stock Option (right to buy) | 750 | $0.00 | 0.0000 | 22,054,000 | 100.00% | 0.00% |
| March 11, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | D | Stock Option (right to buy) | 1875 | $0.00 | 0.0000 | 22,054,000 | 100.00% | 0.01% |
| March 11, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | D | Stock Option (right to buy) | 833 | $0.00 | 0.0000 | 22,054,000 | 100.00% | 0.00% |
| Jan. 5, 2024 | Verastem, Inc. | $VSTM | Calkins Daniel | Chief Financial Officer | S | Common Stock | 6 | $8.50 | 8,621.0000 | 22,054,000 | 0.07% | 0.00% |