Werewolf Therapeutics Inc (HOWL)

Over the past 90 days, Werewolf Therapeutics Inc. has seen significant insider selling, with 115 transactions totaling approximately $1.36 million in net value. Major shareholders, including various MPM entities and Luke Evnin, have executed numerous planned and proposed sales. These divestments occur amid a 57.8% decline in stock price over the same period.
Ticker: HOWL Exchange: NSM


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Insider trades have triggered activity signals for Werewolf Therapeutics Inc. Upgrade to see score, net flow, insiders and the full signal context.

Top insiders
Trades
EVNIN LUKE
1 sale — total 100,000 USD
Planned sale 7 Jul 2026
Value US$4,337,834.13 | Price 67.35 | Shares 47,445
Planned sale 6 Jul 2026
Value US$2,059,515.40 | Price 184.28 | Shares 26,017
Proposed sale 6 Jul 2026
Value US$100,000.00 | Price 0.34 | Shares 1,000
Proposed sale 6 Jul 2026
Value US$100,000.00 | Price 0.34 | Shares 1,000
Proposed sale 6 Jul 2026
Value US$100,000.00 | Price 0.34 | Shares 1,000
Proposed sale 6 Jul 2026
Value US$100,000.00 | Price 0.34 | Shares 1,000
Proposed sale 6 Jul 2026
Value US$100,000.00 | Price 0.34 | Shares 1,000
Proposed sale 6 Jul 2026
Value US$100,000.00 | Price 0.34 | Shares 1,000
Planned sale 29 Jun 2026
Value US$47,125.20 | Price 0.30 | Shares 157,084
Proposed sale 29 Jun 2026
Value US$1,181.21 | Price 0.32 | Shares 3,657
Proposed sale 29 Jun 2026
Value US$5,436.09 | Price 0.32 | Shares 16,830
Proposed sale 29 Jun 2026
Value US$7,509.10 | Price 0.32 | Shares 23,248
Proposed sale 29 Jun 2026
Value US$34,322.63 | Price 0.32 | Shares 106,262
Proposed sale 29 Jun 2026
Value US$2,289.10 | Price 0.32 | Shares 7,087
Proposed sale 29 Jun 2026
Value US$28,396.87 | Price 0.32 | Shares 87,916
Sale 17 Jun 2026
Value US$9,693.25 | Price 0.35 | Shares 27,695
Sale 17 Jun 2026
Value US$9,693.25 | Price 0.35 | Shares 27,695
Sale 17 Jun 2026
Value US$136,225.60 | Price 0.35 | Shares 389,216
Sale 17 Jun 2026
Value US$136,225.60 | Price 0.35 | Shares 389,216
Sale 16 Jun 2026
Value US$3,677.43 | Price 0.37 | Shares 9,939
Sale 16 Jun 2026
Value US$51,683.82 | Price 0.37 | Shares 139,686
Sale 15 Jun 2026
Value US$3,336.06 | Price 0.39 | Shares 8,554
Sale 15 Jun 2026
Value US$46,884.24 | Price 0.39 | Shares 120,216
Sale 12 Jun 2026
Value US$4,528.80 | Price 0.40 | Shares 11,322
Sale 12 Jun 2026
Value US$63,647.60 | Price 0.40 | Shares 159,119
Sale 11 Jun 2026
Value US$6,626.06 | Price 0.38 | Shares 17,437
Sale 11 Jun 2026
Value US$6,626.06 | Price 0.38 | Shares 17,437
Sale 11 Jun 2026
Value US$93,125.08 | Price 0.38 | Shares 245,066
Sale 11 Jun 2026
Value US$93,125.08 | Price 0.38 | Shares 245,066
Sale 11 Jun 2026
Value US$6,626.06 | Price 0.38 | Shares 17,437
Sale 11 Jun 2026
Value US$93,125.08 | Price 0.38 | Shares 245,066
Sale 10 Jun 2026
Value US$1,128.87 | Price 0.37 | Shares 3,051
Sale 10 Jun 2026
Value US$1,128.87 | Price 0.37 | Shares 3,051
Sale 10 Jun 2026
Value US$15,862.64 | Price 0.37 | Shares 42,872
Sale 10 Jun 2026
Value US$15,862.64 | Price 0.37 | Shares 42,872
Sale 10 Jun 2026
Value US$1,128.87 | Price 0.37 | Shares 3,051
Sale 10 Jun 2026
Value US$15,862.64 | Price 0.37 | Shares 42,872
Sale 9 Jun 2026
Value US$9,089.05 | Price 0.37 | Shares 24,565
Sale 9 Jun 2026
Value US$9,089.05 | Price 0.37 | Shares 24,565
Sale 9 Jun 2026
Value US$9,089.05 | Price 0.37 | Shares 24,565
Sale 9 Jun 2026
Value US$127,736.95 | Price 0.37 | Shares 345,235
Planned sale 9 Jun 2026
Value US$28,463.36 | Price 0.37 | Shares 76,928
Planned sale 8 Jun 2026
Value US$24,218.80 | Price 0.40 | Shares 60,547
Planned sale 5 Jun 2026
Value US$9,978.40 | Price 0.40 | Shares 24,946
Planned sale 4 Jun 2026
Value US$8,831.68 | Price 0.44 | Shares 20,072
Planned sale 3 Jun 2026
Value US$12,494.58 | Price 0.42 | Shares 29,749
Planned sale 2 Jun 2026
Value US$13,317.75 | Price 0.45 | Shares 29,595
Planned sale 1 Jun 2026
Value US$37,815.73 | Price 0.47 | Shares 80,459
Planned sale 29 May 2026
Value US$14,650.20 | Price 0.45 | Shares 32,556
Planned sale 28 May 2026
Value US$12,741.08 | Price 0.46 | Shares 27,698
Proposed sale 28 May 2026
Value US$119,650.65 | Price 0.49 | Shares 244,185
Proposed sale 28 May 2026
Value US$7,980.63 | Price 0.49 | Shares 16,287
Proposed sale 28 May 2026
Value US$4,118.45 | Price 0.49 | Shares 8,405
Proposed sale 28 May 2026
Value US$18,950.75 | Price 0.49 | Shares 38,675
Proposed sale 28 May 2026
Value US$98,994.21 | Price 0.49 | Shares 202,029
Proposed sale 28 May 2026
Value US$26,178.25 | Price 0.49 | Shares 53,425
Planned sale 27 May 2026
Value US$38,808.96 | Price 0.48 | Shares 80,852
Planned sale 26 May 2026
Value US$31,936.50 | Price 0.47 | Shares 67,950
Planned sale 22 May 2026
Value US$39,341.25 | Price 0.45 | Shares 87,425
Planned sale 21 May 2026
Value US$15,282.54 | Price 0.42 | Shares 36,387
Planned sale 20 May 2026
Value US$36,934.85 | Price 0.43 | Shares 85,895
Planned sale 19 May 2026
Value US$28,336.50 | Price 0.45 | Shares 62,970
Planned sale 18 May 2026
Value US$11,092.00 | Price 0.50 | Shares 22,184
Proposed sale 18 May 2026
Value US$123,768.23 | Price 0.52 | Shares 240,280
Proposed sale 18 May 2026
Value US$32,729.45 | Price 0.52 | Shares 63,540
Proposed sale 18 May 2026
Value US$9,977.49 | Price 0.52 | Shares 19,370
Proposed sale 18 May 2026
Value US$5,148.94 | Price 0.52 | Shares 9,996
Proposed sale 18 May 2026
Value US$149,594.83 | Price 0.52 | Shares 290,419
Proposed sale 18 May 2026
Value US$23,693.57 | Price 0.52 | Shares 45,998
Planned sale 13 May 2026
Value US$24,126.66 | Price 0.54 | Shares 44,679
Planned sale 12 May 2026
Value US$43,446.40 | Price 0.64 | Shares 67,885
Sale 12 May 2026
Value US$4,300.16 | Price 0.64 | Shares 6,719
Sale 12 May 2026
Value US$60,436.48 | Price 0.64 | Shares 94,432
Planned sale 11 May 2026
Value US$22,745.16 | Price 0.67 | Shares 33,948
Sale 11 May 2026
Value US$3,894.04 | Price 0.67 | Shares 5,812
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-07-08 2026-07-07 PlS Planned sale Non-Executive Director
47,445 -45.0%
67.35
US$4,337,834
47,445 -45.0% 67.35 US$4,337,834
2026-07-08 2026-07-06 PlS Planned sale Non-Executive Director
26,017 -43.5%
184.28
US$2,059,515
26,017 -43.5% 184.28 US$2,059,515
2026-07-06 2026-07-06 PrS Proposed sale

Shareholder

86,909
136.30
US$1,628,163
86,909 136.30 US$1,628,163
2026-07-06 2026-07-06 PrS Proposed sale

Shareholder

1,000
0.34
US$100,000
1,000 0.34 US$100,000
2026-07-06 2026-07-06 PrS Proposed sale

Shareholder

1,000
0.34
US$100,000
1,000 0.34 US$100,000
2026-07-06 2026-07-06 PrS Proposed sale

Shareholder

1,000
0.34
US$100,000
1,000 0.34 US$100,000
2026-07-06 2026-07-06 PrS Proposed sale

Shareholder

1,000
0.34
US$100,000
1,000 0.34 US$100,000
2026-07-06 2026-07-06 PrS Proposed sale

Shareholder

1,000
0.34
US$100,000
1,000 0.34 US$100,000
2026-06-29 2026-06-29 PlS Planned sale Non-Executive Director
157,084 -52.3%
0.30
US$47,125
157,084 -52.3% 0.30 US$47,125
2026-06-29 2026-06-29 PrS Proposed sale

Shareholder

3,657
0.32
US$1,181
3,657 0.32 US$1,181
2026-06-29 2026-06-29 PrS Proposed sale

Shareholder

16,830
0.32
US$5,436
16,830 0.32 US$5,436
2026-06-29 2026-06-29 PrS Proposed sale

Shareholder

23,248
0.32
US$7,509
23,248 0.32 US$7,509
2026-06-29 2026-06-29 PrS Proposed sale

Shareholder

106,262
0.32
US$34,323
106,262 0.32 US$34,323
2026-06-29 2026-06-29 PrS Proposed sale

Shareholder

7,087
0.32
US$2,289
7,087 0.32 US$2,289
2026-06-29 2026-06-29 PrS Proposed sale

Shareholder

87,916
0.32
US$28,397
87,916 0.32 US$28,397
2026-06-22 2026-06-17 S Sale Large shareholder
27,695 -8.4%
0.35
US$9,693
27,695 -8.4% 0.35 US$9,693
2026-06-22 2026-06-17 S Sale Large shareholder
27,695 -8.4%
0.35
US$9,693
27,695 -8.4% 0.35 US$9,693
2026-06-22 2026-06-17 S Sale Large shareholder
389,216 -8.4%
0.35
US$136,226
389,216 -8.4% 0.35 US$136,226
2026-06-22 2026-06-17 S Sale Large shareholder
389,216 -8.4%
0.35
US$136,226
389,216 -8.4% 0.35 US$136,226
2026-06-16 2026-06-16 S Sale Large shareholder
9,939 -2.9%
0.37
US$3,677
9,939 -2.9% 0.37 US$3,677
2026-06-16 2026-06-16 S Sale Large shareholder
139,686 -2.9%
0.37
US$51,684
139,686 -2.9% 0.37 US$51,684
2026-06-16 2026-06-15 S Sale Large shareholder
8,554 -2.4%
0.39
US$3,336
8,554 -2.4% 0.39 US$3,336
2026-06-16 2026-06-15 S Sale Large shareholder
120,216 -2.4%
0.39
US$46,884
120,216 -2.4% 0.39 US$46,884
2026-06-16 2026-06-12 S Sale Large shareholder
11,322 -3.1%
0.40
US$4,529
11,322 -3.1% 0.40 US$4,529
2026-06-16 2026-06-12 S Sale Large shareholder
159,119 -3.1%
0.40
US$63,648
159,119 -3.1% 0.40 US$63,648
2026-06-11 2026-06-11 S Sale Large shareholder
17,437 -4.6%
0.38
US$6,626
17,437 -4.6% 0.38 US$6,626
2026-06-11 2026-06-11 S Sale Large shareholder
17,437 -4.6%
0.38
US$6,626
17,437 -4.6% 0.38 US$6,626
2026-06-11 2026-06-11 S Sale Large shareholder
245,066 -4.6%
0.38
US$93,125
245,066 -4.6% 0.38 US$93,125
2026-06-11 2026-06-11 S Sale Large shareholder
245,066 -4.6%
0.38
US$93,125
245,066 -4.6% 0.38 US$93,125
2026-06-11 2026-06-11 S Sale Large shareholder
17,437 -4.6%
0.38
US$6,626
17,437 -4.6% 0.38 US$6,626
2026-06-11 2026-06-11 S Sale Large shareholder
245,066 -4.6%
0.38
US$93,125
245,066 -4.6% 0.38 US$93,125
2026-06-11 2026-06-10 S Sale Large shareholder
3,051 -0.8%
0.37
US$1,129
3,051 -0.8% 0.37 US$1,129
2026-06-11 2026-06-10 S Sale Large shareholder
3,051 -0.8%
0.37
US$1,129
3,051 -0.8% 0.37 US$1,129
2026-06-11 2026-06-10 S Sale Large shareholder
42,872 -0.8%
0.37
US$15,863
42,872 -0.8% 0.37 US$15,863
2026-06-11 2026-06-10 S Sale Large shareholder
42,872 -0.8%
0.37
US$15,863
42,872 -0.8% 0.37 US$15,863
2026-06-11 2026-06-10 S Sale Large shareholder
3,051 -0.8%
0.37
US$1,129
3,051 -0.8% 0.37 US$1,129
2026-06-11 2026-06-10 S Sale Large shareholder
42,872 -0.8%
0.37
US$15,863
42,872 -0.8% 0.37 US$15,863
2026-06-11 2026-06-09 S Sale Large shareholder
24,565 -6.0%
0.37
US$9,089
24,565 -6.0% 0.37 US$9,089
2026-06-11 2026-06-09 S Sale Large shareholder
24,565 -6.0%
0.37
US$9,089
24,565 -6.0% 0.37 US$9,089
2026-06-11 2026-06-09 S Sale Large shareholder
24,565 -6.0%
0.37
US$9,089
24,565 -6.0% 0.37 US$9,089
2026-06-11 2026-06-09 S Sale Large shareholder
345,235 -6.0%
0.37
US$127,737
345,235 -6.0% 0.37 US$127,737
2026-06-10 2026-06-09 PlS Planned sale Non-Executive Director
76,928 -20.4%
0.37
US$28,463
76,928 -20.4% 0.37 US$28,463
2026-06-08 2026-06-08 PlS Planned sale Non-Executive Director
60,547 -13.8%
0.40
US$24,219
60,547 -13.8% 0.40 US$24,219
2026-06-08 2026-06-05 PlS Planned sale Non-Executive Director
24,946 -5.4%
0.40
US$9,978
24,946 -5.4% 0.40 US$9,978
2026-06-08 2026-06-04 PlS Planned sale Non-Executive Director
20,072 -4.2%
0.44
US$8,832
20,072 -4.2% 0.44 US$8,832
2026-06-03 2026-06-03 PlS Planned sale Non-Executive Director
29,749 -5.8%
0.42
US$12,495
29,749 -5.8% 0.42 US$12,495
2026-06-03 2026-06-02 PlS Planned sale Non-Executive Director
29,595 -5.5%
0.45
US$13,318
29,595 -5.5% 0.45 US$13,318
2026-06-03 2026-06-01 PlS Planned sale Non-Executive Director
80,459 -12.9%
0.47
US$37,816
80,459 -12.9% 0.47 US$37,816
2026-05-29 2026-05-29 PlS Planned sale Non-Executive Director
32,556 -5.0%
0.45
US$14,650
32,556 -5.0% 0.45 US$14,650
2026-05-29 2026-05-28 PlS Planned sale Non-Executive Director
27,698 -4.1%
0.46
US$12,741
27,698 -4.1% 0.46 US$12,741
2026-05-28 2026-05-28 PrS Proposed sale

Shareholder

244,185
0.49
US$119,651
244,185 0.49 US$119,651
2026-05-28 2026-05-28 PrS Proposed sale

Shareholder

16,287
0.49
US$7,981
16,287 0.49 US$7,981
2026-05-28 2026-05-28 PrS Proposed sale

Shareholder

8,405
0.49
US$4,118
8,405 0.49 US$4,118
2026-05-28 2026-05-28 PrS Proposed sale

Shareholder

38,675
0.49
US$18,951
38,675 0.49 US$18,951
2026-05-28 2026-05-28 PrS Proposed sale

Shareholder

202,029
0.49
US$98,994
202,029 0.49 US$98,994
2026-05-28 2026-05-28 PrS Proposed sale

Shareholder

53,425
0.49
US$26,178
53,425 0.49 US$26,178
2026-05-29 2026-05-27 PlS Planned sale Non-Executive Director
80,852 -10.6%
0.48
US$38,809
80,852 -10.6% 0.48 US$38,809
2026-05-26 2026-05-26 PlS Planned sale Non-Executive Director
67,950 -8.2%
0.47
US$31,936
67,950 -8.2% 0.47 US$31,936
2026-05-26 2026-05-22 PlS Planned sale Non-Executive Director
87,425 -9.5%
0.45
US$39,341
87,425 -9.5% 0.45 US$39,341
2026-05-26 2026-05-21 PlS Planned sale Non-Executive Director
36,387 -3.8%
0.42
US$15,283
36,387 -3.8% 0.42 US$15,283
2026-05-20 2026-05-20 PlS Planned sale Non-Executive Director
85,895 -8.2%
0.43
US$36,935
85,895 -8.2% 0.43 US$36,935
2026-05-20 2026-05-19 PlS Planned sale Non-Executive Director
62,970 -5.7%
0.45
US$28,336
62,970 -5.7% 0.45 US$28,336
2026-05-20 2026-05-18 PlS Planned sale Non-Executive Director
22,184 -2.0%
0.50
US$11,092
22,184 -2.0% 0.50 US$11,092
2026-05-18 2026-05-18 PrS Proposed sale

Shareholder

240,280
0.52
US$123,768
240,280 0.52 US$123,768
2026-05-18 2026-05-18 PrS Proposed sale

Shareholder

63,540
0.52
US$32,729
63,540 0.52 US$32,729
2026-05-18 2026-05-18 PrS Proposed sale

Shareholder

19,370
0.52
US$9,977
19,370 0.52 US$9,977
2026-05-18 2026-05-18 PrS Proposed sale

Shareholder

9,996
0.52
US$5,149
9,996 0.52 US$5,149
2026-05-18 2026-05-18 PrS Proposed sale

Shareholder

290,419
0.52
US$149,595
290,419 0.52 US$149,595
2026-05-18 2026-05-18 PrS Proposed sale

Shareholder

45,998
0.52
US$23,694
45,998 0.52 US$23,694
2026-05-13 2026-05-13 PlS Planned sale Non-Executive Director
44,679 -3.8%
0.54
US$24,127
44,679 -3.8% 0.54 US$24,127
2026-05-12 2026-05-12 PlS Planned sale Non-Executive Director
67,885 -5.5%
0.64
US$43,446
67,885 -5.5% 0.64 US$43,446
2026-05-12 2026-05-12 S Sale Large shareholder
6,719 -1.6%
0.64
US$4,300
6,719 -1.6% 0.64 US$4,300
2026-05-12 2026-05-12 S Sale Large shareholder
94,432 -1.6%
0.64
US$60,436
94,432 -1.6% 0.64 US$60,436
2026-05-12 2026-05-11 PlS Planned sale Non-Executive Director
33,948 -2.7%
0.67
US$22,745
33,948 -2.7% 0.67 US$22,745
2026-05-12 2026-05-11 S Sale Large shareholder
5,812 -1.4%
0.67
US$3,894
5,812 -1.4% 0.67 US$3,894