Two major 10% owners — Frazier Life Sciences and Sanofi — made open-market purchases totaling $15.1M at $17/share on August 6, 2026. Simultaneously, both converted large blocks of derivatives to common stock (non-cash), and the CEO, CSO, CBO, CFO, CMO, and two directors received restricted stock grants on August 4. The cluster signals strong institutional alignment and insider confidence, amplified by the C-suite grants and the recent insider activity.
Price Chart
Executive Summary
Two major 10% owners — Frazier Life Sciences and Sanofi — made open-market purchases totaling $15.1M at $17/share on August 6, 2026. Simultaneously, both converted large blocks of derivatives to common stock (non-cash), and the CEO, CSO, CBO, CFO, CMO, and two directors received restricted stock grants on August 4. The cluster signals strong institutional alignment and insider confidence, amplified by the C-suite grants and the recent insider activity.
Key Financial Metrics
Key Facts
- Frazier Life Sciences XI, L.P. purchased 588,235 shares at $17.00, totaling $10.0M
- Sanofi purchased 300,000 shares at $17.00, totaling $5.1M
- Combined open-market purchases: 888,235 shares for $15.1M
- Frazier converted ~50.3M shares via derivative conversions (non-cash) on the same day
- Sanofi converted ~1.6M shares via derivative conversions (non-cash) on the same day
- CEO received a grant of 538,300 shares; CSO, CBO, CFO, CMO each received 140,000 share grants; two directors each received 27,000 share grants (all non-cash)
Financial Impact
Total open-market purchases of $15.1M represent approximately 1.6% of the $929M market cap, crossing the 0.5% materiality threshold.
Risk Factors
- Derivative conversions will increase share count and dilute non-participating shareholders
- No disclosed catalyst for the cluster — could preempt disappointment if tied to a binary event
- Open-market purchases represent only ~1.6% of market cap, significant but not extraordinary
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ATTO-1786132977271 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 8, 2026 19d ago | 3/A | $16.21 | awaiting T+20 | — | $15.00 (−7.46%) |
Oct 8, 2026 19d ago | 3/A | $16.21 | awaiting T+20 | — | $15.00 (−7.46%) |
Sep 28, 2026 29d ago | Press Release | $18.16 $15.00 | ▼ −17.40% | ▼ −18.12% | $15.00 (−17.40%) |
Sep 2, 2026 7w ago | Press Release | $24.20 $17.14 | ▼ −29.17% | ▼ −28.06% | $15.00 (−38.02%) |
Aug 28, 2026 8w ago | 144 / CLUSTER | $21.40 $18.16 | ▼ −15.14% | ▼ −14.95% | $15.00 (−29.91%) |
Aug 13, 2026 10w ago | Insider Buy | $19.86 $24.52 | ▲ +23.46% | ▲ +25.46% | $15.00 (−24.47%) |
Aug 13, 2026 10w ago | Insider Cluster | $19.86 $24.52 | ▲ +23.46% | ▲ +25.46% | $15.00 (−24.47%) |
Aug 10, 2026 11w ago | Insider Cluster | $18.65 $22.86 | ▲ +22.57% | ▲ +23.63% | $15.00 (−19.57%) |
Aug 7, 2026 11w ago | Insider Cluster | $19.84 $23.66 | ▲ +19.25% | ▲ +20.17% | $15.00 (−24.40%) |
Aug 7, 2026 11w ago | Insider Cluster | $20.17 $25.55 | ▲ +26.67% | ▲ +27.07% | $15.00 (−25.63%) |
US Market Status
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