InsiderTrades

Kauffman Michael

SEC CIK 1364719 · EDGAR

Buying vs selling by month open-market trades, last 56 months, all 3 companies
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
VSTMVerastem, Inc.Dir 8,666 — $85.5K 32024-06-182025-11-21
ACETAdicet Bio, Inc.Dir 5,900 — $8,437 32023-06-012024-06-05
KPTIKaryopharm Therapeutics Inc.Dir 713.8K — $480.5K 72022-02-072022-02-28

Most active insiders at VSTM, 12 months

#InsiderTitleBoughtSold
1 Paterson DanPres, CEO, Dir —$502.1K
2 Bunn Paul A.Dir —$138.0K
3 Kauffman MichaelDir —$85.5K
4 Calkins DanielCFO —$54.2K
5 Stuglik Brian MDir —$5,411
6 Gagnon Robert E.Dir —$2,587
7 Tollefson Karin AnnaDir ——
8 ROBERTSON MICHELLEDir ——
9 Kapur AnilDir ——
10 JOHNSON JOHNDir ——

Transactions 13

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
2025-11-25 2025-11-21 VSTM Verastem, Inc. Kauffman Michael Dir S - Sale $10.00 -8,550 8,666 -50% -$85.5K
D 2025-05-27 2025-05-22 VSTM Verastem, Inc. Kauffman Michael Dir A - Grant $0.00 +8,333 17.2K +94% $0
D 2024-06-20 2024-06-18 VSTM Verastem, Inc. Kauffman Michael Dir A - Grant $0.00 +8,333 8,883 +1,515% $0
D 2024-06-07 2024-06-05 ACET Adicet Bio, Inc. Kauffman Michael Dir S - Sale $1.43 -5,900 5,900 -50% -$8,437
D 2024-06-07 2024-06-05 ACET Adicet Bio, Inc. Kauffman Michael Dir A - Grant $0.00 +5,900 11.8K +100% $0
D 2023-06-02 2023-06-01 ACET Adicet Bio, Inc. Kauffman Michael Dir A - Grant $0.00 +5,900 5,900 New $0
D 2022-03-02 2022-02-28 KPTI Karyopharm Therapeutics Inc. Kauffman Michael Dir S - Sale $10.24 -6,226 713.8K -0.9% -$63.8K
DI 2022-03-02 2022-02-28 KPTI Karyopharm Therapeutics Inc. Kauffman Michael Dir S - Sale $10.24 -6,226 898.1K -0.7% -$63.8K
D 2022-03-02 2022-02-28 KPTI Karyopharm Therapeutics Inc. Kauffman Michael Dir A - Grant $0.00 +21.0K 720.0K +3% $0
I 2022-02-22 2022-02-17 KPTI Karyopharm Therapeutics Inc. Kauffman Michael Dir S - Sale $12.12 -9,088 904.4K -1.0% -$110.1K
2022-02-22 2022-02-17 KPTI Karyopharm Therapeutics Inc. Kauffman Michael Dir S - Sale $12.12 -9,079 699.0K -1% -$110.0K
I 2022-02-09 2022-02-07 KPTI Karyopharm Therapeutics Inc. Kauffman Michael Dir S - Sale $9.86 -6,707 913.4K -0.7% -$66.1K
2022-02-09 2022-02-07 KPTI Karyopharm Therapeutics Inc. Kauffman Michael Dir S - Sale $9.86 -6,764 708.1K -0.9% -$66.7K

Purchase Sale Sale after option exercise All abbreviations