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Werewolf Therapeutics, Inc.

HOWL Net buying
CIK 0001785530 #5027 in the set updated 20 Sep 2026
Bought (120 mo)
$91.70M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$8.72M
$7.70M on a plan · $9.21K straight out of an exercise
Sold at will
$1.00M
22 of 168 sales
Net
+$82.98M
+$90.69M against sales at will

By person

15 insiders · 190 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
RA CAPITAL MANAGEMENT, L.P. entity
10% owner
$36.15M (9)
$963.93K (20)
+$35.19M
4,595,600
9.46%
$1.42M
+19,512%
Flynn James E
10% owner
$12.80M (1)
—
+$12.80M
2,552,787
5.25%
$791.36K
—
Sphera Global Healthcare Management LP entity
10% owner
$7.60M (1)
—
+$7.60M
787,997
1.62%
$244.28K
—
Arkin Bio Ventures 2 L.P. entity
10% owner
$6.40M (1)
—
+$6.40M
2,046,634
4.21%
$634.46K
—
Lazarus Alon
Director
$6.40M (1)
—
+$6.40M
2,046,634
4.21%
$634.46K
—
Asanuma Sakae
Director
$5.00M (1)
—
+$5.00M
2,068,909
4.26%
$641.36K
—
Taiho Ventures LLC entity
10% owner
$5.00M (1)
—
+$5.00M
2,068,909
4.26%
$641.36K
—
Longwood Fund III GP, LLC entity
10% owner
$4.00M (1)
—
+$4.00M
1,677,082
3.45%
$519.90K
—
GADICKE ANSBERT
Former 10% Owner
$3.92M (1)
$2.23M (29) scheduled
+$1.69M
11,456,294
23.57%
$3.55M
+60.6%
EVNIN LUKE
Director
$2.41M (1)
$3.26M (88) scheduled
−$845.32K
4,284,172
8.82%
$1.33M
−9.7%
MPM BioVentures 2014, L.P.
Former 10% Owner
$2.01M (1)
$2.23M (29) scheduled
−$213.27K
7,972,109
16.40%
$2.47M
+19.0%
Leonard Reid
Chief Operating Officer
—
$40.24K (2)
−$40.24K
136,259
0.2804%
$42.24K
+8.9%
UPMC
10% owner
—
—
—
1,097,756
2.26%
$340.30K
—
HBM Healthcare Investments (Cayman) Ltd. entity
10% owner
—
—
—
625,995
1.29%
$194.06K
—
Seidel-Dugan Cynthia
Chief Scientific Officer
—
—
—
164,888
0.3393%
$51.12K
+31.7%

Individual transactions

22
Insider
Date
Role
Action
Shares
Price
Amount
RA CAPITAL MANAGEMENT, L.P.
17 Jun 2026
10% owner
Sell indirect
27,695
$0.35
$9.69K
RA CAPITAL MANAGEMENT, L.P.
17 Jun 2026
10% owner
Sell indirect
389,216
$0.35
$136.23K
RA CAPITAL MANAGEMENT, L.P.
16 Jun 2026
10% owner
Sell indirect
9,939
$0.37
$3.68K
RA CAPITAL MANAGEMENT, L.P.
16 Jun 2026
10% owner
Sell indirect
139,686
$0.37
$51.68K
RA CAPITAL MANAGEMENT, L.P.
15 Jun 2026
10% owner
Sell indirect
8,554
$0.39
$3.34K
RA CAPITAL MANAGEMENT, L.P.
15 Jun 2026
10% owner
Sell indirect
120,216
$0.39
$46.88K
RA CAPITAL MANAGEMENT, L.P.
12 Jun 2026
10% owner
Sell indirect
11,322
$0.40
$4.53K
RA CAPITAL MANAGEMENT, L.P.
12 Jun 2026
10% owner
Sell indirect
159,119
$0.40
$63.65K
RA CAPITAL MANAGEMENT, L.P.
11 Jun 2026
10% owner
Sell indirect
17,437
$0.38
$6.63K
RA CAPITAL MANAGEMENT, L.P.
11 Jun 2026
10% owner
Sell indirect
245,066
$0.38
$93.13K
RA CAPITAL MANAGEMENT, L.P.
10 Jun 2026
10% owner
Sell indirect
3,051
$0.37
$1.13K
RA CAPITAL MANAGEMENT, L.P.
10 Jun 2026
10% owner
Sell indirect
42,872
$0.37
$15.86K
RA CAPITAL MANAGEMENT, L.P.
9 Jun 2026
10% owner
Sell indirect
24,565
$0.37
$9.09K
RA CAPITAL MANAGEMENT, L.P.
9 Jun 2026
10% owner
Sell indirect
345,235
$0.37
$127.74K
RA CAPITAL MANAGEMENT, L.P.
12 May 2026
10% owner
Sell indirect
6,719
$0.64
$4.30K
RA CAPITAL MANAGEMENT, L.P.
12 May 2026
10% owner
Sell indirect
94,432
$0.64
$60.44K
RA CAPITAL MANAGEMENT, L.P.
11 May 2026
10% owner
Sell indirect
5,812
$0.67
$3.89K
RA CAPITAL MANAGEMENT, L.P.
11 May 2026
10% owner
Sell indirect
81,678
$0.67
$54.72K
RA CAPITAL MANAGEMENT, L.P.
8 May 2026
10% owner
Sell indirect
25,012
$0.71
$17.76K
RA CAPITAL MANAGEMENT, L.P.
8 May 2026
10% owner
Sell indirect
351,514
$0.71
$249.57K
Leonard Reid
15 Dec 2021
Chief Operating Officer
Sell indirect
135
$13.97
$1.89K
Leonard Reid
15 Dec 2021
Chief Operating Officer
Sell indirect
2,865
$13.39
$38.36K
Show all 190 transactions →

What was left out

Form 4 filings counted 144
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 37
Sales on a Rule 10b5-1 plan 143
Sales straight out of an exercise 3
Sales at will 22
Transactions with no price 0
Shares from compensation/vesting 27,131,842
Sales filed before the plan box existed 2
History held since 3 May 2021