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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
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
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

29
Insider
Date
Role
Action
Shares
Price
Amount
Fairmount Funds Management LLC
22 Jan 2026
Director
Sell indirect
3,500,000
$36.40
$127.40M
Robinson John Edward
26 Dec 2025
Chief Scientific Officer
Sell
90,000
$38.74
$3.49M
Sachs Jessica
26 Dec 2025
Chief Medical Officer
Sell
82,642
$38.70
$3.20M
Green John L.
26 Dec 2025
Chief Financial Officer
Sell
77,000
$38.68
$2.98M
Kearns Evan
26 Dec 2025
Chief Legal Officer
Sell
65,000
$38.70
$2.52M
Green John L.
26 Apr 2021
Chief Financial Officer
Sell
17,813
$8.86
$157.82K
CAMPANA DARIO
12 May 2020
10% owner
Sell indirect
98,200
$0.46
$45.55K
CAMPANA DARIO
11 May 2020
10% owner
Sell indirect
77,719
$0.45
$35.16K
CAMPANA DARIO
11 May 2020
10% owner
Sell indirect
22,281
$0.46
$10.34K
CAMPANA DARIO
8 May 2020
10% owner
Sell indirect
100,000
$0.46
$46.39K
CAMPANA DARIO
7 May 2020
10% owner
Sell indirect
100,000
$0.41
$41.43K
CAMPANA DARIO
6 May 2020
10% owner
Sell indirect
1,800
$0.40
$721.62
CAMPANA DARIO
5 May 2020
10% owner
Sell indirect
135,484
$0.40
$54.44K
CAMPANA DARIO
4 May 2020
10% owner
Sell indirect
4,795
$0.40
$1.92K
CAMPANA DARIO
1 May 2020
10% owner
Sell indirect
800
$0.41
$328.00
CAMPANA DARIO
30 Apr 2020
10% owner
Sell indirect
75,994
$0.40
$30.56K
CAMPANA DARIO
29 Apr 2020
10% owner
Sell indirect
382,927
$0.41
$155.51K
CAMPANA DARIO
28 Apr 2020
10% owner
Sell indirect
15,048
$0.41
$6.17K
CAMPANA DARIO
27 Apr 2020
10% owner
Sell indirect
242,579
$0.40
$97.81K
CAMPANA DARIO
20 Apr 2020
10% owner
Sell indirect
12,606
$0.40
$5.05K
CAMPANA DARIO
17 Apr 2020
10% owner
Sell indirect
65,540
$0.39
$25.57K
CAMPANA DARIO
16 Apr 2020
10% owner
Sell indirect
600
$0.38
$229.56
CAMPANA DARIO
15 Apr 2020
10% owner
Sell indirect
82,782
$0.38
$31.80K
CAMPANA DARIO
14 Apr 2020
10% owner
Sell indirect
44,006
$0.40
$17.60K
CAMPANA DARIO
14 Apr 2020
10% owner
Sell indirect
54,967
$0.40
$22.12K
CAMPANA DARIO
9 Apr 2020
10% owner
Sell indirect
420,292
$0.33
$138.15K
CAMPANA DARIO
8 Apr 2020
10% owner
Sell indirect
100
$0.35
$35.10
CAMPANA DARIO
7 Apr 2020
10% owner
Sell indirect
11,400
$0.35
$3.99K
CAMPANA DARIO
6 Apr 2020
10% owner
Sell indirect
50,080
$0.35
$17.53K
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