Kauffman Michael (CIK 0001364719)

Latest company ownership

Shares held
50,000
Last filed at
Jun 21, 2024
Confidence Score
50.0
2025Q4
Confidence Score History
2022Q1 2025Q4
Shares held
27,000
Last filed at
Mar 2, 2022
Confidence Score
50.0
2025Q4
Confidence Score History
2014Q2 2025Q4
ACET - Adicet Bio, Inc.
Role: Director
Shares held
26,400
Last filed at
Aug 23, 2024
Confidence Score
50.0
2025Q4
Confidence Score History
2024Q2 2025Q4
VSTM - Verastem, Inc.
Role: Director
Shares held
8,666
Last filed at
Nov 25, 2025
Confidence Score
20.9
2025Q4
Confidence Score History
2014Q3 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Nov 21, 2025 Nov 25, 2025 Verastem, Inc. Director Sell 10.0 -8,550 -49.66% ✓ $85.5K
Jun 5, 2024 Jun 7, 2024 Adicet Bio, Inc. Director Sell 52.5 - 0.00% ✗ $8.4K
Feb 28, 2022 Mar 2, 2022 Karyopharm Therapeutics Inc. Director Sell 72.5 +8,548 0.53% ✗ $127.5K
Feb 17, 2022 Feb 22, 2022 Karyopharm Therapeutics Inc. Director Sell 42.5 -18,167 -1.12% ✗ $220.2K
Feb 7, 2022 Feb 9, 2022 Karyopharm Therapeutics Inc. Director Sell 45.0 -13,471 -0.82% ✗ $132.9K
Jan 3, 2022 Jan 5, 2022 Kezar Life Sciences, Inc. Director Sell 32.5 -5,000 -7.28% ✓ $82.3K
Mar 18, 2021 Mar 23, 2021 Karyopharm Therapeutics Inc. CEO Sell 53.8 -4,000 -0.24% ✓ $49.6K
Feb 18, 2021 Feb 22, 2021 Karyopharm Therapeutics Inc. CEO Sell 40.0 -18,990 -1.39% ✗ $281.6K
Feb 11, 2021 Feb 17, 2021 Karyopharm Therapeutics Inc. CEO Sell 45.0 -13,243 -0.99% ✗ $205.5K
Oct 12, 2020 Oct 14, 2020 Karyopharm Therapeutics Inc. CEO Sell 47.5 -7,500 -0.57% ✓ $111.7K
Aug 17, 2020 Aug 18, 2020 Karyopharm Therapeutics Inc. CEO Sell 53.8 -1,477 -0.11% ✓ $22.2K
Jul 15, 2020 Jul 17, 2020 Karyopharm Therapeutics Inc. CEO Sell 47.5 -7,500 -0.57% ✓ $145.7K
Jul 10, 2020 Jul 13, 2020 Karyopharm Therapeutics Inc. CEO Sell 42.5 -15,000 -1.13% ✓ $289K
Jun 22, 2020 Jun 24, 2020 Karyopharm Therapeutics Inc. CEO Sell 47.5 -7,500 -0.57% ✓ $150K
Jun 15, 2020 Jun 17, 2020 Karyopharm Therapeutics Inc. CEO Sell 48.8 -7,500 -0.36% ✓ $122.8K
Jun 10, 2020 Jun 11, 2020 Karyopharm Therapeutics Inc. CEO Sell 42.5 -15,000 -1.13% ✓ $274.7K
May 15, 2020 May 19, 2020 Karyopharm Therapeutics Inc. CEO Sell 45.0 -15,000 -0.72% ✓ $289.8K
May 7, 2020 May 11, 2020 Karyopharm Therapeutics Inc. CEO Sell 42.5 -15,000 -1.13% ✓ $294.4K
Apr 9, 2020 Apr 10, 2020 Karyopharm Therapeutics Inc. CEO Sell 42.5 -20,000 -1.50% ✓ $392.5K
Mar 10, 2020 Mar 11, 2020 Karyopharm Therapeutics Inc. CEO Sell 42.5 -20,000 -1.50% ✓ $447.4K
Feb 19, 2020 Feb 21, 2020 Karyopharm Therapeutics Inc. CEO Sell 40.0 -17,634 -1.33% ✗ $290.6K
Feb 11, 2020 Feb 12, 2020 Karyopharm Therapeutics Inc. CEO Sell 42.5 -20,000 -1.53% ✓ $343.6K
Jan 9, 2020 Jan 10, 2020 Karyopharm Therapeutics Inc. CEO Sell 35.0 -54,626 -4.08% ✓ $377.6K
Dec 10, 2019 Dec 11, 2019 Karyopharm Therapeutics Inc. CEO Sell 42.5 -20,000 -1.49% ✓ $330.1K
Nov 11, 2019 Nov 12, 2019 Karyopharm Therapeutics Inc. CEO Sell 42.5 -20,000 -1.49% ✓ $293.9K
Nov 1, 2019 Nov 5, 2019 Karyopharm Therapeutics Inc. CEO Sell 45.0 -20,000 -1.49% ✓ $240K
Sep 16, 2019 Sep 17, 2019 Karyopharm Therapeutics Inc. CEO Sell 45.0 -20,000 -1.49% ✓ $240K
Jan 7, 2019 Jan 9, 2019 Karyopharm Therapeutics Inc. CEO Sell 47.5 -12,500 -0.94% ✓ $127.8K
Dec 7, 2018 Dec 10, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -12,500 -0.94% ✓ $126.4K
Nov 26, 2018 Nov 27, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -9,600 -0.72% ✓ $105.6K
Nov 19, 2018 Nov 21, 2018 Karyopharm Therapeutics Inc. CEO Sell 58.8 -400 -0.03% ✓ $4.5K
Nov 7, 2018 Nov 9, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -12,500 -0.94% ✓ $145.6K
Oct 18, 2018 Oct 22, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $126.3K
Oct 8, 2018 Oct 9, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -12,500 -0.94% ✓ $196.8K
Sep 28, 2018 Oct 2, 2018 Verastem, Inc. Director Buy 91.3 +8,000 100.00% ✗ $30K
Sep 18, 2018 Sep 18, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $182.6K
Sep 7, 2018 Sep 10, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -12,500 -0.94% ✓ $241.4K
Aug 20, 2018 Aug 21, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $174.6K
Aug 7, 2018 Aug 8, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -12,500 -0.94% ✓ $225.6K
Jul 18, 2018 Jul 20, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $182.7K
Jul 9, 2018 Jul 10, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -12,500 -0.94% ✓ $234K
Jun 18, 2018 Jun 19, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $186.6K
Jun 7, 2018 Jun 11, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $173K
May 18, 2018 May 21, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $193.9K
May 7, 2018 May 8, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $167.7K
Apr 18, 2018 Apr 20, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $147.9K
Apr 9, 2018 Apr 10, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $124.8K
Mar 19, 2018 Mar 20, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $152.9K
Mar 7, 2018 Mar 8, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $161.5K
Feb 20, 2018 Feb 22, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $147.9K
Feb 7, 2018 Feb 8, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $125K
Jan 18, 2018 Jan 22, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $100.9K
Jan 8, 2018 Jan 9, 2018 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $100.8K
Dec 18, 2017 Dec 20, 2017 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $91.6K
Dec 7, 2017 Dec 8, 2017 Karyopharm Therapeutics Inc. CEO Sell 47.5 -10,000 -0.75% ✓ $103.9K
Mar 19, 2015 Feb 17, 2016 Verastem, Inc. Director Sell 26.3 -3,000 -100.00% ✗ $23.6K
Dec 1, 2014 Jan 14, 2015 Karyopharm Therapeutics Inc. CEO Sell 17.5 -70,000 -5.01% ✗ $1.7M
Sep 17, 2014 Sep 18, 2014 Verastem, Inc. Director Buy 91.3 +3,000 100.00% ✗ $27.3K
Jul 2, 2014 Jul 2, 2014 Karyopharm Therapeutics Inc. CEO Sell 16.3 -200,000 -12.53% ✗ $8.5M
Jun 18, 2014 Jun 19, 2014 Karyopharm Therapeutics Inc. CEO Sell 42.5 -20,000 -1.24% ✓ $835.2K