Monitor for actual sales on Form 4 filings; combined institutional selling may pressure the stock in the short term. Given the low stock price and venture investor exits, assess if this signals lack of confidence ahead of potential catalysts.
Price Chart
Executive Summary
Two major institutional holders—MPM BioVentures 2014 (B), L.P. and UBS Oncology Impact Fund L.P.—filed Form 144 notices on May 1, 2026, indicating intent to sell shares of Werewolf Therapeutics (HOWL). MPM proposes selling 24,251 shares worth approximately $17,451. Combined insider selling from two large venture investors on the same day adds near-term selling pressure to a stock already trading near $0.72 with a $35M market cap.
Key Facts
- MPM BioVentures 2014 (B), L.P. filed Form 144 to sell 24,251 shares of HOWL common stock
- UBS Oncology Impact Fund L.P. also filed a Form 144 on the same day, indicating additional insider selling
- The proposed sale from MPM has an approximate market value of $17,451 based on recent price
- Both filings occurred on 2026-05-01, suggesting coordinated selling by large pre-IPO investors
- HOWL stock trades near $0.72 with a market cap of approximately $35 million
Financial Impact
MPM's proposed sale of 24,251 shares is ~$17,451; UBS's sale amount is not disclosed but combined sales represent a notable fraction of daily volume.
Risk Factors
- Additional insider selling could accelerate the stock's decline
- Loss of institutional support may impair access to capital
- Low stock price near cash value may attract short sellers
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 5 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (HOWL) — Batch item 1 | 0001628280-26-029393 |
| Document: 0001628280-26-029393-index.html | 0001628280-26-029394 |
| Document: 0001628280-26-029393.txt | 0001628280-26-029393 |
| 144 Filing (HOWL) — Batch item 4 | 0001628280-26-029394 |
| Document: 0001628280-26-029394-index.html | 0001628280-26-029393 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 26, 2026 1d ago | S-4/A | $0.9806 | awaiting T+5 | — | $1.04 (−6.06%) |
Sep 22, 2026 5w ago | S-4 | $0.9894 $0.9223 | ▲ +6.78% | ▲ +6.11% | $1.04 (−5.11%) |
Sep 21, 2026 5w ago | SC 13G | $0.9800 $0.9300 | ▼ −5.10% | ▼ −4.08% | $1.04 (+6.12%) |
Aug 21, 2026 9w ago | 425 | $0.8740 $0.9433 | ▲ +7.93% | ▲ +7.46% | $1.04 (+18.99%) |
Aug 21, 2026 9w ago | 8-K | $0.8740 $0.9433 | ▲ +7.93% | ▲ +7.46% | $1.04 (+18.99%) |
Aug 21, 2026 9w ago | Press Release | $0.8740 $0.9433 | ▼ −7.93% | ▼ −7.46% | $1.04 (−18.99%) |
Jul 31, 2026 12w ago | 8-K | $0.3531 $0.3971 | ▲ +12.46% | ▲ +8.95% | $1.04 (+194.53%) |
Jul 31, 2026 12w ago | Press Release | $0.3531 $0.3971 | ▲ +12.46% | ▲ +8.95% | $1.04 (+194.53%) |
Jun 29, 2026 17w ago | 144 | $0.3599 $0.3200 | ▲ +11.09% | ▲ +11.69% | $1.04 (−188.97%) |
Jun 29, 2026 17w ago | 144 | $0.3599 $0.3200 | ▲ +11.09% | ▲ +11.69% | $1.04 (−188.97%) |
US Market Status
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