The sustained selling by both a board member and the largest institutional holder (RA Capital) in consecutive sessions warrants close monitoring. Check for upcoming 10-Q or 8-K filings (earnings, pipeline update, or financing) that may have triggered the sale. If no positive catalyst emerges, consider that insiders may be reducing exposure ahead of adverse clinical or funding news at this micro-cap biotech.
Price Chart
Executive Summary
Two insiders at Werewolf Therapeutics — a director and a 10% owner — sold a total of ~$156K in open-market sales over two days, representing ~0.87% of the company's $18M market cap. The cluster is wholly in SELL, with no insider buys, and the selling by a major institutional holder (RA Capital) is material relative to issuer size for a sub-$20M market cap.
Key Financial Metrics
Key Facts
- Insider SELL cluster: 2 insiders, 5 trades over 7 days, 100% selling
- Total open-market sales: ~$156,000
- 10% owner RA Capital Management sold 633,173 shares (~$237K aggregate in 3 trades) over three days (Jun 8-11 at $0.37-$0.38)
- Director Luke Evnin sold 76,928 shares at $0.37 on Jun 9 and 60,547 shares at $0.40 on Jun 8
- No insider purchases in the cluster (zero open-market buys)
- Sales represent ~0.87% of $18M market cap — above the 0.5% threshold for significance
- Prior 30d insider activity: 10 sells totaling $372K; the current cluster substantially extends that selling pattern
Financial Impact
$156K open-market insider selling over a 7-day window = 0.87% of market cap
Risk Factors
- Insider selling cluster before clinical data or funding announcement could foreshadow bad news
- RA Capital is the largest holder; continued liquidation would further pressure the stock
- Micro-cap biotech with $18M market cap — high dilution and cash-burn risk; insider sales may signal runway concern
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-HOWL-1781223262981 |
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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