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sellWeak cluster of 210b5-1 plan

Luke Evnin sold $87k of HOWL

director at Werewolf Therapeutics, Inc.. 191,762 shares at an average of $0.45, traded May 21, 2026, filed May 26, 2026.

Warning score
17
Value
$87k
191,762 shares
Holdings after
763,685
-20% from before
From 52-week low
0%
low $0.42, close $0.42
From 52-week high
-81%
high $2.19, as of May 21, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $87k at market
    +9
  • Share of holdings sold
    Sold 20% of holdings
    +5
  • Cluster
    2 insiders selling within 14 days
    +8
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

HOWLOct 12, 2026 · close 0.98
Since filing May 26, 2026: +112.1%SPY +4.2% · excess +107.9%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001134657-26-000014, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 21, 2026SOpen-market sale
Common Stockindirect: See Footnotes10b5-1
-36,387$0.42$15k919,060May 26, 2026
May 22, 2026SOpen-market sale
Common Stockindirect: See Footnotes10b5-1
-87,425$0.45$39k831,635May 26, 2026
May 26, 2026SOpen-market sale
Common Stockindirect: See Footnotes10b5-1
-67,950$0.47$32k763,685May 26, 2026

Related signals

Other insiders at Werewolf Therapeutics, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
21Weak
HOWLsell10b5-1
Werewolf Therapeutics, Inc.
Luke Evnin
director
$45k
143,199 shares
-100%
29Weak
HOWLsell 210b5-1
Werewolf Therapeutics, Inc.
Luke Evnin
director
$47k
157,084 shares
-52%
31Weak
HOWLsell 2
Werewolf Therapeutics, Inc.
Ra Capital Management, L.p.
owner
$146k
416,911 shares
-9%
31Weak
HOWLsell 2
Werewolf Therapeutics, Inc.
Ra Capital Management, L.p.
owner
$174k
448,836 shares
-9%
38Weak
HOWLsell 2
Werewolf Therapeutics, Inc.
Ra Capital Management, L.p.
owner
$254k
678,226 shares
-12%
13Weak
HOWLsell 210b5-1
Werewolf Therapeutics, Inc.
Luke Evnin
director
$28k
76,928 shares
-20%
14Weak
HOWLsell 210b5-1
Werewolf Therapeutics, Inc.
Luke Evnin
director
$43k
105,565 shares
-22%
16Weak
HOWLsell 210b5-1
Werewolf Therapeutics, Inc.
Luke Evnin
director
$64k
139,803 shares
-22%
16Weak
HOWLsell 210b5-1
Werewolf Therapeutics, Inc.
Luke Evnin
director
$66k
141,106 shares
-18%
16Weak
HOWLsell 210b5-1
Werewolf Therapeutics, Inc.
Luke Evnin
director
$76k
171,049 shares
-15%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Luke Evnin sold $87k of HOWL | InsiderTell