John L. Green

Principal Accounting Officer, MERRIMACK PHARMACEUTICALS INC.

Companies

Cogent Biosciences, Inc.Chief financial officer Jul 8, 2020 to now¹
Cogent Biosciences, Inc.Officer Feb 11, 2019 to Feb 13, 2020²
MERRIMACK PHARMACEUTICALS INCPrincipal Accounting Officer Jun 20, 2017 to Jun 20, 2017³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

Cogent Biosciences, Inc. COGT131,834 shares⁴$3.9M at $29.52Dec 26, 2025

As of each latest filing. The line shows shares held over time.

Recent filings

Dec 26, 2025Sold 77,000 shares at $38.68 of Cogent Biosciences, Inc.⁴
Dec 17, 2025Shares withheld for tax 145,007 shares at $39.45 of Cogent Biosciences, Inc.⁵
Dec 17, 2025Granted 300,000 shares of Cogent Biosciences, Inc.⁵
Dec 17, 2025Granted 50,000 shares of Cogent Biosciences, Inc.⁵

Sources

The numbers on this page point here. Each one links to the record it came from.

1
SEC EDGARCogent Biosciences, Inc., Chief financial officer
2
SEC EDGARCogent Biosciences, Inc., Officer
3
SEC EDGARMERRIMACK PHARMACEUTICALS INC, Principal Accounting Officer
4
SEC EDGARCogent Biosciences, Inc. shares after the filing of Dec 26, 2025
5
SEC EDGARForm 4 filed Dec 19, 2025