Werewolf Therapeutics (HOWL) stock: insider trades, news & valuation
Heavy selling
Close · Oct 9, 2026
$0.98
+7.7% on the day
-44.9% over 12 months
52-week range $0.31 – $1.78
Share price and insider trades
HOWL closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$8.7M
Insiders buying0
Insiders selling12
Werewolf Therapeutics insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 12 sold $8.7M of HOWL stock on the open market.
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HOWL insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $45K | 2 |
| Q2 2026 | — | 0 | $2.1M | 50 |
| Q1 2026 | — | 0 | $194K | 11 |
| Q4 2025 | — | 0 | $6.3M | 100 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day0.1×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 Werewolf Therapeutics, Inc. insiders reported open-market purchases totaling $0, while 12 insiders reported sales totaling $8.7M. Among insiders with enough purchase history to measure, Peter Kolchinsky (10% Owner) has the highest Insider Score at 99. 143 of 163 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Jul 8SEC | Luke EvninDirector | Sell Plan | 107,429 | $0.31 | $33K | +216.1% | — |
| Jul 8SEC | Luke EvninDirector | Sell Plan | 35,770107,429 held (−25%) | $0.32 | $11K | +206.2% | — |
| Jun 29SEC | Luke EvninDirector | Sell Plan | 157,084143,199 held (−52%) | $0.30 | $47K | +226.7% | — |
| Jun 22SEC | Ra Capital Management, L.P.10% Owner | Sell | 389,2164,268,448 held (−8%) | $0.35 | $136K | +180.0% | 92 |
| Jun 22SEC | Ra Capital Management, L.P.10% Owner | Sell | 27,695303,719 held (−8%) | $0.35 | $10K | +180.0% | 92 |
| Jun 16SEC | Ra Capital Management, L.P.10% Owner | Sell | 159,1194,917,566 held (−3%) | $0.40 | $64K | +145.0% | 92 |
| Jun 16SEC | Ra Capital Management, L.P.10% Owner | Sell | 139,6864,657,664 held (−3%) | $0.37 | $52K | +164.9% | 92 |
| Jun 16SEC | Ra Capital Management, L.P.10% Owner | Sell | 120,2164,797,350 held (−2%) | $0.39 | $47K | +151.3% | 92 |
| Jun 16SEC | Ra Capital Management, L.P.10% Owner | Sell | 11,322349,907 held (−3%) | $0.40 | $5K | +145.0% | 92 |
| Jun 16SEC | Ra Capital Management, L.P.10% Owner | Sell | 9,939331,414 held (−3%) | $0.37 | $4K | +164.9% | 92 |
| Jun 16SEC | Ra Capital Management, L.P.10% Owner | Sell | 8,554341,353 held (−2%) | $0.39 | $3K | +151.3% | 92 |
| Jun 11SEC | Peter Kolchinsky10% Owner | Sell | 345,2355,364,623 held (−6%) | $0.37 | $128K | +164.9% | 99 |
| Jun 11SEC | Peter Kolchinsky10% Owner | Sell | 245,0665,076,685 held (−5%) | $0.38 | $93K | +157.9% | 99 |
| Jun 11SEC | Peter Kolchinsky10% Owner | Sell | 42,8725,321,751 held (−1%) | $0.37 | $16K | +164.9% | 99 |
| Jun 11SEC | Peter Kolchinsky10% Owner | Sell | 24,565381,717 held (−6%) | $0.37 | $9K | +164.9% | 99 |
| Jun 11SEC | Peter Kolchinsky10% Owner | Sell | 17,437361,229 held (−5%) | $0.38 | $7K | +157.9% | 99 |
| Jun 11SEC | Peter Kolchinsky10% Owner | Sell | 3,051378,666 held (−1%) | $0.37 | $1K | +164.9% | 99 |
| Jun 10SEC | Luke EvninDirector | Sell Plan | 76,928300,283 held (−20%) | $0.37 | $28K | +164.9% | — |
| Jun 8SEC | Luke EvninDirector | Sell Plan | 60,547377,211 held (−14%) | $0.40 | $24K | +145.0% | — |
| Jun 8SEC | Luke EvninDirector | Sell Plan | 24,946437,758 held (−5%) | $0.40 | $10K | +145.0% | — |
| Jun 8SEC | Luke EvninDirector | Sell Plan | 20,072462,704 held (−4%) | $0.44 | $9K | +122.7% | — |
| Jun 3SEC | Luke EvninDirector | Sell Plan | 80,459542,120 held (−13%) | $0.47 | $38K | +108.5% | — |
| Jun 3SEC | Luke EvninDirector | Sell Plan | 29,595512,525 held (−5%) | $0.45 | $13K | +117.8% | — |
| Jun 3SEC | Luke EvninDirector | Sell Plan | 29,749482,776 held (−6%) | $0.42 | $12K | +133.3% | — |
| May 29SEC | Luke EvninDirector | Sell Plan | 80,852682,833 held (−11%) | $0.48 | $39K | +104.2% | — |
| May 29SEC | Luke EvninDirector | Sell Plan | 32,556622,579 held (−5%) | $0.45 | $15K | +117.8% | — |
| May 29SEC | Luke EvninDirector | Sell Plan | 27,698655,135 held (−4%) | $0.46 | $13K | +113.0% | — |
| May 26SEC | Luke EvninDirector | Sell Plan | 87,425831,635 held (−10%) | $0.45 | $39K | +117.8% | — |
| May 26SEC | Luke EvninDirector | Sell Plan | 67,950763,685 held (−8%) | $0.47 | $32K | +108.5% | — |
| May 26SEC | Luke EvninDirector | Sell Plan | 36,387919,060 held (−4%) | $0.42 | $15K | +133.3% | — |
| May 20SEC | Luke EvninDirector | Sell Plan | 85,895955,447 held (−8%) | $0.43 | $37K | +127.9% | — |
| May 20SEC | Luke EvninDirector | Sell Plan | 62,9701,041,342 held (−6%) | $0.45 | $28K | +117.8% | — |
| May 20SEC | Luke EvninDirector | Sell Plan | 22,1841,104,312 held (−2%) | $0.50 | $11K | +96.0% | — |
| May 13SEC | Luke EvninDirector | Sell Plan | 44,6791,126,496 held (−4%) | $0.54 | $24K | +81.5% | — |
| May 12SEC | Ra Capital Management, L.P.10% Owner | Sell | 351,5145,885,968 held (−6%) | $0.71 | $250K | +38.0% | 92 |
| May 12SEC | Luke EvninDirector | Sell Plan | 305,7411,273,008 held (−19%) | $0.70 | $214K | +40.0% | — |
| May 12SEC | Ra Capital Management, L.P.10% Owner | Sell | 94,4325,709,858 held (−2%) | $0.64 | $60K | +53.1% | 92 |
| May 12SEC | Ra Capital Management, L.P.10% Owner | Sell | 81,6785,804,290 held (−1%) | $0.67 | $55K | +46.3% | 92 |
| May 12SEC | Luke EvninDirector | Sell Plan | 67,8851,171,175 held (−5%) | $0.64 | $43K | +53.1% | — |
| May 12SEC | Luke EvninDirector | Sell Plan | 33,9481,239,060 held (−3%) | $0.67 | $23K | +46.3% | — |
| May 12SEC | Ra Capital Management, L.P.10% Owner | Sell | 25,012418,813 held (−6%) | $0.71 | $18K | +38.0% | 92 |
| May 12SEC | Ra Capital Management, L.P.10% Owner | Sell | 6,719406,282 held (−2%) | $0.64 | $4K | +53.1% | 92 |
| May 12SEC | Ra Capital Management, L.P.10% Owner | Sell | 5,812413,001 held (−1%) | $0.67 | $4K | +46.3% | 92 |
| May 7SEC | Luke EvninDirector | Sell Plan | 79,0861,578,749 held (−5%) | $0.63 | $50K | +55.6% | — |
| May 7SEC | Luke EvninDirector | Sell Plan | 14,6351,657,835 held (−1%) | $0.66 | $10K | +48.5% | — |
| May 7SEC | Luke EvninDirector | Sell Plan | 6,8601,672,470 held (−0%) | $0.69 | $5K | +42.0% | — |
| May 4SEC | Luke EvninDirector | Sell Plan | 168,2621,785,687 held (−9%) | $0.72 | $121K | +36.1% | — |
| May 4SEC | Luke EvninDirector | Sell Plan | 58,3941,727,293 held (−3%) | $0.73 | $43K | +34.2% | — |
| May 4SEC | Luke EvninDirector | Sell Plan | 47,9631,679,330 held (−3%) | $0.72 | $35K | +36.1% | — |
| Apr 29SEC | Luke EvninDirector | Sell Plan | 95,4122,010,508 held (−5%) | $0.73 | $70K | +34.2% | — |
| Apr 29SEC | Luke EvninDirector | Sell Plan | 53,9402,105,920 held (−2%) | $0.85 | $46K | +15.3% | — |
| Apr 29SEC | Luke EvninDirector | Sell Plan | 56,5591,953,949 held (−3%) | $0.69 | $39K | +42.0% | — |
| Jan 20SEC | Luke EvninDirector | Sell Plan | 38,7822,159,860 held (−2%) | $0.54 | $21K | +81.5% | — |
| Jan 15SEC | Luke EvninDirector | Sell Plan | 43,1982,266,671 held (−2%) | $0.55 | $24K | +78.2% | — |
| Jan 15SEC | Luke EvninDirector | Sell Plan | 37,4132,198,642 held (−2%) | $0.55 | $21K | +78.2% | — |
| Jan 15SEC | Luke EvninDirector | Sell Plan | 30,6162,236,055 held (−1%) | $0.57 | $17K | +71.9% | — |
| Jan 12SEC | Luke EvninDirector | Sell Plan | 58,9802,309,869 held (−2%) | $0.57 | $34K | +71.9% | — |
| Jan 12SEC | Luke EvninDirector | Sell Plan | 24,6782,368,849 held (−1%) | $0.61 | $15K | +60.7% | — |
| Jan 12SEC | Luke EvninDirector | Sell Plan | 7,7162,393,527 held (−0%) | $0.63 | $5K | +55.6% | — |
| Jan 7SEC | Luke EvninDirector | Sell Plan | 40,7612,413,158 held (−2%) | $0.65 | $26K | +50.8% | — |
| Jan 7SEC | Luke EvninDirector | Sell Plan | 18,3782,453,919 held (−1%) | $0.64 | $12K | +53.1% | — |
| Jan 7SEC | Luke EvninDirector | Sell Plan | 11,9152,401,243 held (−0%) | $0.64 | $8K | +53.1% | — |
| Jan 2SEC | Luke EvninDirector | Sell Plan | 34,8472,515,827 held (−1%) | $0.61 | $21K | +60.7% | — |
| Jan 2SEC | Luke EvninDirector | Sell Plan | 24,9622,490,865 held (−1%) | $0.62 | $15K | +58.1% | — |
| Jan 2SEC | Luke EvninDirector | Sell Plan | 18,5682,472,297 held (−1%) | $0.63 | $12K | +55.6% | — |
| Dec 29SEC | Luke EvninDirector | Sell Plan | 108,6062,550,674 held (−4%) | $0.61 | $66K | +60.7% | — |
| Dec 29SEC | Luke EvninDirector | Sell Plan | 71,4282,711,222 held (−3%) | $0.63 | $45K | +55.6% | — |
| Dec 29SEC | Luke EvninDirector | Sell Plan | 59,3072,782,650 held (−2%) | $0.69 | $41K | +42.0% | — |
| Dec 29SEC | Luke EvninDirector | Sell Plan | 35,6322,659,280 held (−1%) | $0.63 | $22K | +55.6% | — |
| Dec 29SEC | Luke EvninDirector | Sell Plan | 16,3102,694,912 held (−1%) | $0.65 | $11K | +50.8% | — |
| Dec 17SEC | Luke EvninDirector | Sell Plan | 23,6402,866,488 held (−1%) | $1.07 | $25K | -8.4% | — |
| Dec 17SEC | Luke EvninDirector | Sell Plan | 14,5482,851,940 held (−1%) | $1.05 | $15K | -6.7% | — |
| Dec 17SEC | Luke EvninDirector | Sell Plan | 9,9832,841,957 held (−0%) | $1.14 | $11K | -14.0% | — |
| Dec 12SEC | Luke EvninDirector | Sell Plan | 37,1042,935,995 held (−1%) | $1.06 | $39K | -7.5% | — |
| Dec 12SEC | Luke EvninDirector | Sell Plan | 28,0092,907,986 held (−1%) | $1.07 | $30K | -8.4% | — |
| Dec 12SEC | Luke EvninDirector | Sell Plan | 17,8582,890,128 held (−1%) | $1.08 | $19K | -9.3% | — |
| Dec 9SEC | Luke EvninDirector | Sell Plan | 44,5702,973,099 held (−1%) | $1.01 | $45K | -3.0% | — |
| Dec 9SEC | Luke EvninDirector | Sell Plan | 34,0413,017,669 held (−1%) | $0.99 | $34K | -1.0% | — |
| Dec 9SEC | Luke EvninDirector | Sell Plan | 16,5683,051,710 held (−1%) | $0.97 | $16K | +1.0% | — |
| Dec 4SEC | Bioventures 2014 (b), L.p. MpmFormer 10% Owner | Sell Plan | 83,2304,784,111 held (−2%) | $0.97 | $81K | +1.0% | — |
| Dec 4SEC | Mpm Bioimpact LlcFormer 10% Owner | Sell Plan | 83,2304,784,111 held (−2%) | $0.97 | $81K | +1.0% | — |
| Dec 4SEC | Bioventures 2014 (b), L.p. MpmFormer 10% Owner | Sell Plan | 59,2774,924,566 held (−1%) | $0.89 | $53K | +10.1% | — |
| Dec 4SEC | Mpm Bioimpact LlcFormer 10% Owner | Sell Plan | 59,2774,924,566 held (−1%) | $0.89 | $53K | +10.1% | — |
| Dec 4SEC | Luke EvninDirector | Sell Plan | 53,4163,068,278 held (−2%) | $0.97 | $52K | +1.0% | — |
| Dec 4SEC | Bioventures 2014 (b), L.p. MpmFormer 10% Owner | Sell Plan | 57,2254,867,341 held (−1%) | $0.87 | $50K | +12.6% | — |
| Dec 4SEC | Mpm Bioimpact LlcFormer 10% Owner | Sell Plan | 57,2254,867,341 held (−1%) | $0.87 | $50K | +12.6% | — |
| Dec 4SEC | Luke EvninDirector | Sell Plan | 38,0433,158,420 held (−1%) | $0.89 | $34K | +10.1% | — |
| Dec 4SEC | Luke EvninDirector | Sell Plan | 36,7263,121,694 held (−1%) | $0.87 | $32K | +12.6% | — |
| Dec 1SEC | Mpm Asset Management Investors Bv2014 Llc10% Owner | Sell Plan | 60,7335,065,037 held (−1%) | $0.98 | $60K | +0.0% | — |
| Dec 1SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 60,7335,065,037 held (−1%) | $0.98 | $60K | +0.0% | — |
| Dec 1SEC | Mpm Asset Management Investors Bv2014 Llc10% Owner | Sell Plan | 60,9174,983,843 held (−1%) | $0.94 | $57K | +4.3% | — |
| Dec 1SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 60,9174,983,843 held (−1%) | $0.94 | $57K | +4.3% | — |
| Dec 1SEC | Luke EvninDirector | Sell Plan | 38,9783,248,573 held (−1%) | $0.98 | $38K | +0.0% | — |
| Dec 1SEC | Luke EvninDirector | Sell Plan | 39,0963,196,463 held (−1%) | $0.94 | $37K | +4.3% | — |
| Dec 1SEC | Mpm Asset Management Investors Bv2014 Llc10% Owner | Sell Plan | 20,2775,044,760 held (−0%) | $0.99 | $20K | -1.0% | — |
| Dec 1SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 20,2775,044,760 held (−0%) | $0.99 | $20K | -1.0% | — |
| Dec 1SEC | Luke EvninDirector | Sell Plan | 13,0143,235,559 held (−0%) | $0.99 | $13K | -1.0% | — |
| Nov 25SEC | Mpm Bioventures 2014 Gp Llc10% Owner | Sell Plan | 88,8025,168,303 held (−2%) | $0.98 | $87K | +0.0% | — |
| Nov 25SEC | Mpm Oncology Innovations Fund Gp Llc10% Owner | Sell Plan | 88,8025,168,303 held (−2%) | $0.98 | $87K | +0.0% | — |
| Nov 25SEC | Luke EvninDirector | Sell Plan | 56,9923,314,848 held (−2%) | $0.98 | $56K | +0.0% | — |
| Nov 25SEC | Mpm Bioventures 2014 Gp Llc10% Owner | Sell Plan | 64,3315,257,105 held (−1%) | $0.83 | $53K | +18.1% | — |
| Nov 25SEC | Mpm Oncology Innovations Fund Gp Llc10% Owner | Sell Plan | 64,3315,257,105 held (−1%) | $0.83 | $53K | +18.1% | — |
| Nov 25SEC | Mpm Bioventures 2014 Gp Llc10% Owner | Sell Plan | 42,5335,125,770 held (−1%) | $0.92 | $39K | +6.5% | — |
| Nov 25SEC | Mpm Oncology Innovations Fund Gp Llc10% Owner | Sell Plan | 42,5335,125,770 held (−1%) | $0.92 | $39K | +6.5% | — |
| Nov 25SEC | Luke EvninDirector | Sell Plan | 41,2873,371,840 held (−1%) | $0.83 | $34K | +18.1% | — |
| Nov 25SEC | Luke EvninDirector | Sell Plan | 27,2973,287,551 held (−1%) | $0.92 | $25K | +6.5% | — |
| Nov 20SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 66,3245,362,588 held (−1%) | $0.94 | $62K | +4.3% | — |
| Nov 20SEC | Mpm Oncology Innovations Fund Gp Llc10% Owner | Sell Plan | 66,3245,362,588 held (−1%) | $0.94 | $62K | +4.3% | — |
| Nov 20SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 52,6275,428,912 held (−1%) | $0.93 | $49K | +5.4% | — |
| Nov 20SEC | Mpm Oncology Innovations Fund Gp Llc10% Owner | Sell Plan | 52,6275,428,912 held (−1%) | $0.93 | $49K | +5.4% | — |
| Nov 20SEC | Luke EvninDirector | Sell Plan | 42,5663,439,538 held (−1%) | $0.94 | $40K | +4.3% | — |
| Nov 20SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 41,1525,321,436 held (−1%) | $0.89 | $37K | +10.1% | — |
| Nov 20SEC | Mpm Oncology Innovations Fund Gp Llc10% Owner | Sell Plan | 41,1525,321,436 held (−1%) | $0.89 | $37K | +10.1% | — |
| Nov 20SEC | Luke EvninDirector | Sell Plan | 33,7763,482,104 held (−1%) | $0.93 | $31K | +5.4% | — |
| Nov 20SEC | Luke EvninDirector | Sell Plan | 26,4113,413,127 held (−1%) | $0.89 | $24K | +10.1% | — |
| Nov 17SEC | Mpm Oncology Innovations Fund Gp Llc10% Owner | Sell Plan | 90,9515,600,240 held (−2%) | $0.98 | $89K | +0.0% | — |
| Nov 17SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 90,9515,600,240 held (−2%) | $0.98 | $89K | +0.0% | — |
| Nov 17SEC | Mpm Oncology Innovations Fund Gp Llc10% Owner | Sell Plan | 61,6405,538,600 held (−1%) | $0.93 | $57K | +5.4% | — |
| Nov 17SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 61,6405,538,600 held (−1%) | $0.93 | $57K | +5.4% | — |
| Nov 17SEC | Luke EvninDirector | Sell Plan | 58,3723,592,061 held (−2%) | $0.98 | $57K | +0.0% | — |
| Nov 17SEC | Mpm Oncology Innovations Fund Gp Llc10% Owner | Sell Plan | 57,0615,481,539 held (−1%) | $0.95 | $54K | +3.2% | — |
| Nov 17SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 57,0615,481,539 held (−1%) | $0.95 | $54K | +3.2% | — |
| Nov 17SEC | Luke EvninDirector | Sell Plan | 39,5603,552,501 held (−1%) | $0.93 | $37K | +5.4% | — |
| Nov 17SEC | Luke EvninDirector | Sell Plan | 36,6213,515,880 held (−1%) | $0.95 | $35K | +3.2% | — |
| Nov 12SEC | Bioventures 2014, L.p. Mpm10% Owner | Sell Plan | 68,4805,836,240 held (−1%) | $1.11 | $76K | -11.7% | — |
| Nov 12SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 68,4805,836,240 held (−1%) | $1.11 | $76K | -11.7% | — |
| Nov 12SEC | Bioventures 2014, L.p. Mpm10% Owner | Sell Plan | 55,8105,731,860 held (−1%) | $1.14 | $64K | -14.0% | — |
| Nov 12SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 55,8105,731,860 held (−1%) | $1.14 | $64K | -14.0% | — |
| Nov 12SEC | Bioventures 2014, L.p. Mpm10% Owner | Sell Plan | 48,5705,787,670 held (−1%) | $1.18 | $57K | -16.9% | — |
| Nov 12SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 48,5705,787,670 held (−1%) | $1.18 | $57K | -16.9% | — |
| Nov 12SEC | Luke EvninDirector | Sell Plan | 43,9503,743,524 held (−1%) | $1.11 | $49K | -11.7% | — |
| Nov 12SEC | Bioventures 2014, L.p. Mpm10% Owner | Sell Plan | 40,6695,691,191 held (−1%) | $1.09 | $44K | -10.1% | — |
| Nov 12SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 40,6695,691,191 held (−1%) | $1.09 | $44K | -10.1% | — |
| Nov 12SEC | Luke EvninDirector | Sell Plan | 35,8183,676,534 held (−1%) | $1.14 | $41K | -14.0% | — |
| Nov 12SEC | Luke EvninDirector | Sell Plan | 31,1723,712,352 held (−1%) | $1.18 | $37K | -16.9% | — |
| Nov 12SEC | Luke EvninDirector | Sell Plan | 26,1013,650,433 held (−1%) | $1.09 | $28K | -10.1% | — |
| Nov 6SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 140,4886,007,122 held (−2%) | $1.22 | $171K | -19.7% | — |
| Nov 6SEC | Mpm Bioimpact Llc10% Owner | Sell Plan | 140,4886,007,122 held (−2%) | $1.22 | $171K | -19.7% | — |
| Nov 6SEC | Luke EvninDirector | Sell Plan | 90,1643,853,195 held (−2%) | $1.22 | $110K | -19.7% | — |
| Nov 6SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 54,4525,904,720 held (−1%) | $1.21 | $66K | -19.0% | — |
| Nov 6SEC | Mpm Bioimpact Llc10% Owner | Sell Plan | 54,4525,904,720 held (−1%) | $1.21 | $66K | -19.0% | — |
| Nov 6SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 47,9505,959,172 held (−1%) | $1.22 | $58K | -19.7% | — |
| Nov 6SEC | Mpm Bioimpact Llc10% Owner | Sell Plan | 47,9505,959,172 held (−1%) | $1.22 | $58K | -19.7% | — |
| Nov 6SEC | Luke EvninDirector | Sell Plan | 34,9473,787,474 held (−1%) | $1.21 | $42K | -19.0% | — |
| Nov 6SEC | Luke EvninDirector | Sell Plan | 30,7743,822,421 held (−1%) | $1.22 | $38K | -19.7% | — |
| Nov 3SEC | Mpm Asset Management Investors Bv2014 Llc10% Owner | Sell Plan | 114,0446,241,673 held (−2%) | $1.28 | $146K | -23.4% | — |
| Nov 3SEC | Mpm Oncology Innovations Fund Lp10% Owner | Sell Plan | 114,0446,241,673 held (−2%) | $1.28 | $146K | -23.4% | — |
| Nov 3SEC | Mpm Asset Management Investors Bv2014 Llc10% Owner | Sell Plan | 86,9366,355,717 held (−1%) | $1.43 | $124K | -31.5% | — |
| Nov 3SEC | Mpm Oncology Innovations Fund Lp10% Owner | Sell Plan | 86,9366,355,717 held (−1%) | $1.43 | $124K | -31.5% | — |
| Nov 3SEC | Mpm Asset Management Investors Bv2014 Llc10% Owner | Sell Plan | 94,0636,147,610 held (−2%) | $1.29 | $121K | -24.0% | — |
| Nov 3SEC | Mpm Oncology Innovations Fund Lp10% Owner | Sell Plan | 94,0636,147,610 held (−2%) | $1.29 | $121K | -24.0% | — |
| Nov 3SEC | Luke EvninDirector | Sell Plan | 73,1924,003,728 held (−2%) | $1.28 | $94K | -23.4% | — |
| Nov 3SEC | Luke EvninDirector | Sell Plan | 55,7954,076,920 held (−1%) | $1.43 | $80K | -31.5% | — |
| Nov 3SEC | Luke EvninDirector | Sell Plan | 60,3693,943,359 held (−2%) | $1.29 | $78K | -24.0% | — |
| Oct 29SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 134,2406,442,653 held (−2%) | $1.55 | $208K | -36.8% | — |
| Oct 29SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 134,2406,442,653 held (−2%) | $1.55 | $208K | -36.8% | — |
| Oct 29SEC | Luke EvninDirector | Sell Plan | 86,1544,132,715 held (−2%) | $1.55 | $134K | -36.8% | — |
| Oct 29SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 72,7096,645,961 held (−1%) | $1.72 | $125K | -43.0% | — |
| Oct 29SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 72,7096,645,961 held (−1%) | $1.72 | $125K | -43.0% | — |
| Oct 29SEC | Ubs Oncology Impact Fund L.P.10% Owner | Sell Plan | 69,0686,576,893 held (−1%) | $1.64 | $113K | -40.2% | — |
| Oct 29SEC | Mpm Bioventures 2014 Llc10% Owner | Sell Plan | 69,0686,576,893 held (−1%) | $1.64 | $113K | -40.2% | — |
| Oct 29SEC | Luke EvninDirector | Sell Plan | 46,6644,263,196 held (−1%) | $1.72 | $80K | -43.0% | — |
| Oct 29SEC | Luke EvninDirector | Sell Plan | 44,3274,218,869 held (−1%) | $1.64 | $73K | -40.2% | — |
Insiders at Werewolf Therapeutics, Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Luke EvninDirector | — | $3.3M | Jul 8, 2026 | — |
| Mpm Bioventures 2014 Llc10% Owner | — | $1.1M | Nov 20, 2025 | — |
| Ubs Oncology Impact Fund L.P.10% Owner | — | $825K | Dec 1, 2025 | — |
| Ra Capital Management, L.P.10% Owner | — | $710K | Jun 22, 2026 | 92 |
| Mpm Asset Management Investors Bv2014 Llc10% Owner | — | $528K | Dec 1, 2025 | — |
| Mpm Oncology Innovations Fund Gp Llc10% Owner | — | $528K | Nov 25, 2025 | — |
| Mpm Bioimpact LlcFormer 10% Owner | — | $479K | Dec 4, 2025 | — |
| Mpm Oncology Innovations Fund Lp10% Owner | — | $392K | Nov 3, 2025 | — |
| Peter Kolchinsky10% Owner | — | $254K | Jun 11, 2026 | 99 |
| Bioventures 2014, L.p. Mpm10% Owner | — | $241K | Nov 12, 2025 | — |
| Bioventures 2014 (b), L.p. MpmFormer 10% Owner | — | $183K | Dec 4, 2025 | — |
| Mpm Bioventures 2014 Gp Llc10% Owner | — | $180K | Nov 25, 2025 | — |
HOWL stock: common questions
Are Werewolf Therapeutics, Inc. insiders buying HOWL stock?
In the past 12 months, 0 insiders reported open-market purchases of HOWL worth $0.
Are Werewolf Therapeutics, Inc. insiders selling HOWL stock?
12 insiders reported sales worth $8.7M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is HOWL's 52-week range?
Over the past year HOWL has traded between $0.31 and $1.78. It last closed at $0.98 on Oct 9, 2026.