Three major pre-IPO VC backers concurrently registering to sell creates immediate overhang. The stock faces material selling pressure given the micro-cap market cap of ~$17M. Traders should monitor for actual sales (Form 4 filings) and consider that the 80% analyst bullish consensus is now contradicted by insider/VC distribution. Exit liquidity for remaining holders may be challenged.
Price Chart
Executive Summary
Three major institutional shareholders (UBS Oncology Impact Fund L.P., MPM BioVentures 2014 (B), L.P., and MPM BioVentures 2014, L.P.) have filed Forms 144 on June 29, 2026 indicating intent to sell substantial blocks of Werewolf Therapeutics (HOWL) common stock. The UBS fund alone registered intent to sell ~87,916 shares worth approximately $28,396.87, acquired via private placement at inception. These coordinated filings from two of the company's largest pre-IPO venture backers represent a significant overhang risk for the micro-cap biotech stock.
Key Facts
- UBS Oncology Impact Fund L.P. filed Form 144 on June 29, 2026 to sell 87,916 shares of HOWL common stock, valued at $28,396.87
- UBS shares were acquired in a private placement on May 4, 2021 — pre-IPO venture holdings
- MPM BioVentures 2014 (B), L.P. filed a concurrent Form 144 on the same date
- MPM BioVentures 2014, L.P. filed a concurrent Form 144 on the same date
- All three selling entities share the same business address (399 Boylston Street, Boston), indicating coordinated action
- Market cap is approximately $17M, making any institutional selling materially impactful on liquidity
- Recent 30-day insider activity shows 10 sells totaling $460K prior to these filings
- The stock had 80% analyst bullish consensus (4 Strong Buy, 4 Buy, 2 Hold) — insider/vc selling contradicts positive sentiment
- Form 144 is an intent to sell notice; actual sales may occur in the near future
Financial Impact
UBS fund alone seeks to sell ~$28,397; combined MPM funds likely add to selling pressure; total could represent a significant percentage of the $17M market cap
Risk Factors
- Coordinated VC distribution may signal deteriorating confidence in near-term pipeline catalysts
- Actual sales could depress stock price materially given thin trading volumes for a $17M market cap stock
- Selling by largest insiders ahead of any potential clinical data readout suggests limited near-term upside conviction
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 | 0001628280-26-046084 |
| Document: 0001628280-26-046084-index.html | 0001628280-26-046083 |
| Document: 0001628280-26-046084.txt | 0001628280-26-046082 |
| 144 Filing (HOWL) — Batch item 4 | 0001628280-26-046083 |
| 144 Filing (HOWL) — Batch item 5 | 0001628280-26-046082 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 26, 2026 today | S-4/A | $0.9806 | awaiting T+5 | — | $0.9810 (−0.04%) |
Sep 22, 2026 4w ago | S-4 | $0.9894 $0.9223 | ▲ +6.78% | ▲ +6.11% | $0.9810 (+0.85%) |
Sep 21, 2026 5w ago | SC 13G | $0.9800 $0.9300 | ▼ −5.10% | ▼ −4.08% | $0.9810 (+0.10%) |
Aug 21, 2026 9w ago | 425 | $0.8740 $0.9433 | ▲ +7.93% | ▲ +7.46% | $0.9810 (+12.24%) |
Aug 21, 2026 9w ago | 8-K | $0.8740 $0.9433 | ▲ +7.93% | ▲ +7.46% | $0.9810 (+12.24%) |
Aug 21, 2026 9w ago | Press Release | $0.8740 $0.9433 | ▼ −7.93% | ▼ −7.46% | $0.9810 (−12.24%) |
Jul 31, 2026 12w ago | 8-K | $0.3531 $0.3971 | ▲ +12.46% | ▲ +8.95% | $0.9810 (+177.82%) |
Jul 31, 2026 12w ago | Press Release | $0.3531 $0.3971 | ▲ +12.46% | ▲ +8.95% | $0.9810 (+177.82%) |
Jun 29, 2026 17w ago | 144 | $0.3599 $0.3200 | ▲ +11.09% | ▲ +11.69% | $0.9810 (−172.58%) |
Jun 29, 2026 17w ago | 144 | $0.3599 $0.3200 | ▲ +11.09% | ▲ +11.69% | $0.9810 (−172.58%) |
US Market Status
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