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Cogent Biosciences, Inc.

COGT Net selling

CIK 0001622229 #1211 in the set updated 17 Sep 2026

Bought (120 mo)

$55.96M

out of their own pocket, the only kind of buying there is

Sold (120 mo)

$385.30M

$0.00 on a plan · $244.77M straight out of an exercise

Sold at will

$140.52M

29 of 38 sales

Net

−$329.34M

−$84.57M against sales at will

By person

16 insiders · 50 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Fairmount Funds Management LLC entity

Director

$44.50M (3)

$370.02M (2) scheduled

−$325.52M

5,503,418

3.17%

$206.60M

—

Ratcliffe Liam

Director

$6.60M (2)

—

+$6.60M

897,773

0.5174%

$33.70M

—

Robinson John Edward

Chief Scientific Officer

—

$3.49M (1)

−$3.49M

140,002

0.0807%

$5.26M

—

Sachs Jessica

Chief Medical Officer

—

$3.20M (1)

−$3.20M

133,938

0.0772%

$5.03M

—

Green John L.

Chief Financial Officer

—

$3.14M (2)

−$3.14M

131,834

0.0760%

$4.95M

—

Kearns Evan

Chief Legal Officer

—

$2.52M (1)

−$2.52M

109,398

0.0630%

$4.11M

—

Morris Arlene

Director

—

$1.69M (2) scheduled

−$1.69M

0.0000%

$0.00

—

Venrock Healthcare Capital Partners III, L.P. entity

10% owner

$1.14M (3)

—

+$1.14M

4,355,273

2.51%

$163.50M

+11.6%

Atlas Venture Fund IX, L.P. entity

10% owner

$1.13M (1)

—

+$1.13M

3,361,535

1.94%

$126.19M

—

Booth Bruce

Director

$1.13M (1)

—

+$1.13M

3,361,535

1.94%

$126.19M

—

FMR LLC entity

See Remark 1

$1.13M (1)

—

+$1.13M

23,240

0.0134%

$872.42K

—

CAMPANA DARIO

10% owner

—

$788.38K (23)

−$788.38K

3,095,114

1.78%

$116.19M

−39.3%

Ettenberg Seth

Chief Scientific Officer

—

$463.50K (6) scheduled

−$463.50K

0.0000%

$0.00

—

Pinnow Cole

Chief Commercial Officer

$332.41K (1)

—

+$332.41K

216,650

0.1249%

$8.13M

+5,755%

FIL Ltd entity

See Remark 1

—

1,138,274

0.6560%

$42.73M

—

Robbins Andrew R

President and CEO

—

657,503

0.3789%

$24.68M

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

Morris Arlene

27 Aug 2026

Director

Sold after exercise

3,161

$37.54

$118.66K

Morris Arlene

27 Aug 2026

Director

Sold after exercise

42,349

$37.09

$1.57M

Fairmount Funds Management LLC

31 Mar 2026

Director

Sold after exercise indirect

7,000,000

$34.66

$242.62M

Ettenberg Seth

25 Mar 2019

Chief Scientific Officer

Sold after exercise

11,485

$4.12

$47.33K

Ettenberg Seth

25 Feb 2019

Chief Scientific Officer

Sold after exercise

11,485

$4.25

$48.85K

Ettenberg Seth

26 Dec 2018

Chief Scientific Officer

Sold after exercise

11,485

$4.05

$46.49K

Ettenberg Seth

26 Nov 2018

Chief Scientific Officer

Sold after exercise

11,485

$7.00

$80.44K

Ettenberg Seth

25 Oct 2018

Chief Scientific Officer

Sold after exercise

11,485

$8.46

$97.20K

Ettenberg Seth

25 Sep 2018

Chief Scientific Officer

Sold after exercise

11,485

$12.47

$143.18K

Show all 50 transactions →

What was left out

Form 4 filings counted 215

Amendments (4/A) skipped 2

Filings about a different issuer 0

Unreadable filings 0

Joint filings 2

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 9

Sales at will 29

Transactions with no price 0

Shares from compensation/vesting 31,999,534

Sales filed before the plan box existed 24

History held since 3 Apr 2018