RA Capital's $1.56M open-market purchase is a strong bullish signal from a sophisticated healthcare investor. With 75% historical win rate on ARTV insider buy signals at T+20 and 92% analyst bullish consensus, traders should watch for upcoming clinical data or partnership announcements. The stock's recent volatility (T+5 moves of -6% to +35% on prior signals) suggests positioning for a catalyst-driven move.
Price Chart
Executive Summary
RA Capital Management, a 10% owner and director, purchased $1.56M in ARTV stock over a week, including a $1.36M block on July 16. This is a significant insider conviction buy at ~0.65% of market cap, signaling strong confidence from a sophisticated healthcare investor ahead of potential catalysts. The historical win rate on ARTV insider buy signals is 75% at T+20, supporting a bullish read.
Key Financial Metrics
Key Facts
- RA Capital Management (10% owner/director) purchased $1.56M in ARTV stock from July 10-16
- Largest single trade: 152,472 shares at $8.93 for $1.36M on July 16
- Total insider buying over 30 days: $1.9M across 6 transactions
- Market cap: $241M; purchase represents ~0.65% of market cap
- 92% analyst consensus bullish (11 of 12 analysts rate Buy or Strong Buy)
Financial Impact
Insider purchase of $1.56M represents 0.65% of market cap, a significant signal from a 10% owner
Risk Factors
- Biotech sector risk: clinical-stage company with no approved products
- Insider buying concentrated in one 10% owner; not a broad C-suite cluster
- Prior high-score bullish reports on ARTV had mixed T+5 outcomes (-6% to +35%)
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| INSIDER-BUY Data (Synthetic) | 0001231919-26-000774 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 11, 2026 20d ago | 8-K | $10.14 $8.91 | ▼ −12.13% | ▼ −11.67% | $6.86 (−32.35%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▼ −3.43% | ▼ −2.83% | $6.86 (−36.42%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▼ −3.43% | ▼ −2.83% | $6.86 (−36.42%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▼ −3.43% | ▼ −2.83% | $6.86 (−36.42%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▼ −3.43% | ▼ −2.83% | $6.86 (−36.42%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▲ +3.43% | ▲ +2.83% | $6.86 (+36.42%) |
Sep 4, 2026 28d ago | Insider Cluster | $11.19 $10.88 | ▼ −2.77% | ▼ −2.22% | $6.86 (−38.70%) |
Aug 15, 2026 6w ago | Institutional Cluster | $11.74 $11.68 | ▼ −0.51% | ▲ +0.16% | $6.86 (−41.57%) |
Jul 31, 2026 8w ago | Insider Buy | $10.76 $11.07 | ▲ +2.88% | ▲ +1.08% | $6.86 (−36.25%) |
Jul 28, 2026 9w ago | Insider Buy | $10.53 $10.02 | ▼ −4.84% | ▼ −3.30% | $6.86 (−34.85%) |
US Market Status
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