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CIK 0001622229 · Large accelerated filer

Cogent Biosciences, Inc.

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Ticker
COGT
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
465308248
Phone
617-945-5576
Business address
180 THIRD AVENUE, 4TH FLOOR, WALTHAM, MA
Former names
Unum Therapeutics Inc., Unum Therapeutics, Inc.
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$1,689,493
in 1 filing, $1.7M under 10b5-1 plans

Net −$1,689,493. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Morris Arlene −$1.7M Director sold 100% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-08-27 Morris Arlene Director Option exercise 10b5-1 +41,927 $5.64 $236K 41,927
2026-08-27 Morris Arlene Director Option exercise 10b5-1 +3,583 $2.52 $9K 45,510
2026-08-27 Morris Arlene Director Sale 10b5-1 −42,349 $37.09 $1.6M 3,161
2026-08-27 Morris Arlene Director Sale 10b5-1 −3,161 $37.54 $119K 0
2026-08-27 Morris Arlene Director Option exercise · Stock Option (Right to Buy) 10b5-1 −41,927 2,773
2026-08-27 Morris Arlene Director Option exercise · Stock Option (Right to Buy) 10b5-1 −3,583 0
2026-06-09 Morris Arlene Director Grant or award · Stock Option (Right to Buy) +17,901 17,901
2025-06-04 Morris Arlene Director Grant or award · Stock Option (Right to Buy) +44,700 44,700
2024-06-05 Morris Arlene Director Grant or award · Stock Option (Right to Buy) +44,700 44,700
2023-06-07 Morris Arlene Director Grant or award · Stock Option (Right to Buy) +36,700 36,700
2022-06-07 Morris Arlene Director Grant or award · Stock Option (Right to Buy) +30,700 30,700

Page 1 of 1 · 11 trades