144 ·Filed Jun 29, 2026
Form 144 — notice of proposed sale of securities
Actionable Insight ▼ Bearish
Monitor for actual sale execution via subsequent Form 4 filings.
Final — all horizons settled through T+60d ⚠ clustered
HOWL ▲ +174.91% at T+60d
SHORT call ✗ call lost -174.91% · α vs SPY -172.09% · entry $0.3599 → $0.9894
T+1d
-1.92%
call +1.92% · α +1.78%
$0.3530
settled 4mo ago
T+5d
-11.09%
call +11.09% · α +11.69%
$0.3200
settled 4mo ago
T+20d
+25.95%
call -25.95% · α -26.98%
$0.4533
settled 3mo ago
T+60d
+174.91%
call -174.91% · α -172.09%
$0.9894
settled 5w ago
Price Chart
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Executive Summary
MPM Asset Management Investors BV2014 LLC, a major shareholder, filed a Form 144 to sell 3,657 shares of Werewolf Therapeutics (HOWL) valued at approximately $4.32M. The proposed sale represents about 25% of the company's $17M market cap, signaling potential insider concern or liquidity need.
Key Facts
- MPM Asset Management Investors BV2014 LLC intends to sell 3,657 shares of common stock.
- Approximate market value of sale: $4.32 million (based on ~$1,181.21 per share).
- The stake represents a meaningful percentage of the company's $17M market cap.
- Insider has sold securities over the past three months (details in attached exhibit).
- Filing date and proposed sale date both 2026-06-29.
Financial Impact
Sale of ~$4.32M in stock, representing a significant portion of the insider's holdings and ~25% of market cap.
dilutionshare price
Risk Factors
- Insider selling may signal fundamental weakness or lack of confidence.
- Potential for further dilution if additional shares are sold.
- Small market cap amplifies price impact of large sales.
Market Snapshot
Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
80% bullish (10 analysts)
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001628280-26-046086 |
| Document: 0001628280-26-046086-index.html | 0001628280-26-046086 |
| Document: 0001628280-26-046086.txt | 0001628280-26-046086 |
25 reports for HOWL
79% Hit rate @ T+5 Went positive at some point 12 of 14 best @ T+60▲ +51.32%
Filters
Rows
| 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%) |
Showing 10 of 25
US Market Status
Market Closed — Opens Thu (10h 8m)
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