Mason Michael (CIK 0001514291)

Latest company ownership

Shares held
391,054
Last filed at
Sep 5, 2024
Confidence Score
50.0
2025Q4
Confidence Score History
2021Q1 2025Q4
ALNY - ALNYLAM PHARMACEUTICALS, INC.
Role: VP, Finance and Treasurer
Shares held
2,750
Last filed at
Aug 14, 2018
Confidence Score
50.0
2025Q4
Confidence Score History
2013Q4 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Sep 4, 2024 Sep 5, 2024 Karyopharm Therapeutics Inc. CFO Sell 47.5 -7,050 -1.77% ✗ $5.1K
Jun 4, 2024 Jun 6, 2024 Karyopharm Therapeutics Inc. CFO Sell 52.5 -652 -0.16% ✗ $645.5
Feb 29, 2024 Mar 4, 2024 Karyopharm Therapeutics Inc. CFO Sell 46.3 -33,849 -7.82% ✗ $39.8K
Feb 27, 2024 Feb 29, 2024 Karyopharm Therapeutics Inc. CFO Sell 90.0 +185,660 75.18% ✗ $3.4K
Feb 6, 2024 Feb 8, 2024 Karyopharm Therapeutics Inc. CFO Sell 47.5 -4,205 -1.67% ✗ $6.7K
Sep 1, 2023 Sep 5, 2023 Karyopharm Therapeutics Inc. CFO Sell 47.5 -6,913 -2.82% ✗ $9.2K
Jun 2, 2023 Jun 5, 2023 Karyopharm Therapeutics Inc. CFO Sell 52.5 -631 -0.26% ✗ $1.4K
Feb 28, 2023 Mar 2, 2023 Karyopharm Therapeutics Inc. CFO Sell 91.3 +83,795 51.86% ✗ $33.9K
Feb 27, 2023 Mar 1, 2023 Karyopharm Therapeutics Inc. CFO Sell 47.5 -2,802 -1.70% ✗ $8.5K
Feb 6, 2023 Feb 8, 2023 Karyopharm Therapeutics Inc. CFO Sell 46.3 -4,141 -2.46% ✗ $14.1K
Jun 3, 2022 Jun 6, 2022 Karyopharm Therapeutics Inc. CFO Sell 52.5 -601 -0.43% ✗ $3.6K
Feb 28, 2022 Mar 2, 2022 Karyopharm Therapeutics Inc. CFO Sell 91.3 +85,802 160.96% ✗ $24.5K
Feb 7, 2022 Feb 9, 2022 Karyopharm Therapeutics Inc. CFO Sell 46.3 -3,947 -6.89% ✗ $38.9K
Feb 11, 2021 Feb 17, 2021 Karyopharm Therapeutics Inc. CFO Sell 46.3 -2,858 -35.07% ✗ $44.4K
Aug 13, 2018 Aug 14, 2018 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 91.3 +613 271.24% ✗ $40.8K
Sep 22, 2017 Feb 9, 2018 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 22.5 -1,950 -89.61% ✗ $225.2K
Jan 4, 2018 Jan 8, 2018 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 5.0 -36,745 -99.39% ✓ $4.8M
Dec 30, 2017 Jan 3, 2018 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 20.0 -3,538 -40.54% ✗ $449.5K
May 16, 2017 May 17, 2017 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 7.5 -9,375 -81.16% ✓ $656.3K
Jun 1, 2015 Jun 3, 2015 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 7.5 -4,791 -70.48% ✓ $631.6K
Dec 15, 2014 Dec 16, 2014 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 5.0 -22,162 -91.78% ✓ $2.2M
Feb 3, 2014 Feb 4, 2014 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 7.5 -3,750 -52.13% ✓ $295K
Jan 23, 2014 Jan 27, 2014 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Tresurer Sell 42.5 -2,560 -26.25% ✗ $229.1K
Dec 16, 2013 Dec 18, 2013 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 7.5 -8,000 -45.06% ✓ $482.9K
Dec 2, 2013 Dec 4, 2013 ALNYLAM PHARMACEUTICALS, INC. VP, Finance and Treasurer Sell 10.0 -3,750 -27.77% ✓ $231.9K