HOWL · Insider trading · 13F holders · Congress trades
Werewolf Therapeutics Inc (HOWL)
Who is buying and selling HOWL: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 3
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
HOWL at a glance
- No open-market insider purchases or sales of HOWL were filed in the last 90 days.
- 3 13F filers hold HOWL among their 50 largest positions, worth $276K combined. The biggest bets by portfolio weight are Lynx1 Capital Management LP (0.0%), Marest Capital, LLC (0.0%) and Mpm Bioimpact LLC (0.0%).
- No member of Congress has disclosed a trade in HOWL.
HOWL insider trading
No open-market insider purchases or sales of HOWL were filed in the last 90 days.
Who owns HOWL? Hedge funds and superinvestors
3 13F filers hold HOWL among their 50 largest positions, worth $276K combined. The biggest bets by portfolio weight are Lynx1 Capital Management LP (0.0%), Marest Capital, LLC (0.0%) and Mpm Bioimpact LLC (0.0%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Lynx1 Capital Management LPHedge fund | 0.0% | $237K | 657,786 | +0.0% shares | Q2 2026 |
| Mpm Bioimpact LLCHedge fund | 0.0% | $29K | 80,142 | -93.4% shares | Q2 2026 |
| Marest Capital, LLCWealth manager | 0.0% | $10K | 10,870 | +0.0% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 2). Screen HOWL in the grand portfolio →
HOWL stock trades by members of Congress
No member of Congress has disclosed a trade in HOWL.
HOWL questions and answers
Are insiders buying HOWL stock?
No open-market insider purchases or sales of HOWL were filed in the last 90 days.
Which hedge funds own HOWL?
3 13F filers hold HOWL among their 50 largest positions, worth $276K combined. The biggest bets by portfolio weight are Lynx1 Capital Management LP (0.0%), Marest Capital, LLC (0.0%) and Mpm Bioimpact LLC (0.0%).
Has Congress traded HOWL?
No member of Congress has disclosed a trade in HOWL.
Who is the largest holder of HOWL?
Among 13F filers, Lynx1 Capital Management LP reports the largest HOWL position, $237K (657,786 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Lynx1 Capital Management LP's: 0.0% of its portfolio.
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