SEC Insider Transactions from Rowinsky Eric K.

Last updated: 2026-03-14 11:14 UTC | Total transactions: 16

Rowinsky Eric K has filed 16 insider transactions across 3 companies since September 2017.

Most recent transaction: a grant/award of 2370 shares of BIOGEN INC. ($BIIB) on June 17, 2025.

Activity breakdown: 2 open-market purchases and 0 sales.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
June 17, 2025 BIOGEN INC. $BIIB Rowinsky Eric K Director A Common Stock 2370 $0.00 24,339.0000 169,500,000 10.79% 0.00%
May 22, 2025 Verastem, Inc. $VSTM Rowinsky Eric K Director A Stock Option (right to buy) 12500 $0.00 12,500.0000 54,173,000 9999.99% 0.02%
May 22, 2025 Verastem, Inc. $VSTM Rowinsky Eric K Director A Common Stock 8333 $0.00 16,666.0000 54,173,000 100.00% 0.02%
June 21, 2024 BIOGEN INC. $BIIB Rowinsky Eric K Director A Common Stock 1340 $0.00 21,969.0000 168,700,000 6.50% 0.00%
June 18, 2024 Verastem, Inc. $VSTM Rowinsky Eric K Director A Stock Option (right to buy) 12500 $0.00 12,500.0000 26,832,000 9999.99% 0.05%
June 18, 2024 Verastem, Inc. $VSTM Rowinsky Eric K Director A Common Stock 8333 $0.00 8,333.0000 26,832,000 9999.99% 0.03%
March 11, 2024 Verastem, Inc. $VSTM Rowinsky Eric K Director D Stock Option (right to buy) 4166 $0.00 0.0000 22,054,000 100.00% 0.02%
March 11, 2024 Verastem, Inc. $VSTM Rowinsky Eric K Director D Stock Option (right to buy) 2083 $0.00 0.0000 22,054,000 100.00% 0.01%
March 11, 2024 Verastem, Inc. $VSTM Rowinsky Eric K Director D Stock Option (right to buy) 2083 $0.00 0.0000 22,054,000 100.00% 0.01%
March 11, 2024 Verastem, Inc. $VSTM Rowinsky Eric K Director D Stock Option (right to buy) 2083 $0.00 0.0000 22,054,000 100.00% 0.01%
March 11, 2024 Verastem, Inc. $VSTM Rowinsky Eric K Director A Stock Option (right to buy) 12572 $0.00 12,572.0000 22,054,000 9999.99% 0.06%
March 11, 2024 Verastem, Inc. $VSTM Rowinsky Eric K Director D Stock Option (right to buy) 2157 $0.00 0.0000 22,054,000 100.00% 0.01%
Feb. 15, 2024 BIOGEN INC. $BIIB Rowinsky Eric K Director P Common Stock 455 $222.54 20,629.0000 168,700,000 2.26% 0.00%
Sept. 5, 2017 Verastem, Inc. $VSTM Rowinsky Eric K Director P Common Stock 2000 $3.84 2,000.0000 36,988,000 9999.99% 0.01%
Jan. 1, 2024 Fortress Biotech, Inc. $FBIO Rowinsky Eric K Director A COMMON STOCK, PAR VALUE $0.001 6666 $0.00 68,797.0000 8,110,906 10.73% 0.08%
June 26, 2023 BIOGEN INC. $BIIB Rowinsky Eric K Director A Common Stock 960 $0.00 20,174.0000 167,900,000 5.00% 0.00%