CEO Robins' $6.82M sale is notable in absolute terms but represents only 0.2% of market cap, below the 0.5% threshold for significant concern. The sales follow option exercises, typical of pre-planned diversification. Monitor for any Form 4 filings in the next 30 days showing continued selling without option exercise—that would be a stronger bearish signal.
Price Chart
Executive Summary
ADPT CEO Chad Robins and two directors sold a total of $8.19M in open-market stock over two days, with the CEO alone selling $6.82M. The sales are tied to option exercises, but the open-market dispositions are substantial relative to the $4.1B market cap (0.2%).
Key Financial Metrics
Key Facts
- CEO Chad Robins sold 278,472 shares at $24.48 for $6.82M on 2026-08-18
- Director Peter Neupert sold 40,000 shares at $25.10 for $1.00M on 2026-08-17
- Director Robert Hershberg sold 15,000 shares at $24.39 for $366K on 2026-08-18
- Total open-market sales: $8.19M, representing ~0.2% of $4.1B market cap
- All sales were preceded by option exercises at $6.32-$6.55 per share, locking in profits
Financial Impact
Total insider sales of $8.19M, or ~0.2% of market cap
Risk Factors
- CEO selling $6.82M in open market could signal peak valuation view
- Director Neupert sold $1M, adding to insider selling pressure
- Insider sales may accelerate if stock continues to rise
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ADPT-1787263289043 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 6, 2026 21d ago | 144 | $26.28 | awaiting T+20 | — | $27.66 (+5.25%) |
Oct 5, 2026 21d ago | Insider Cluster | $26.90 | awaiting T+20 | — | $27.66 (+2.83%) |
Sep 25, 2026 4w ago | Press Release | $29.43 $25.51 | ▼ −13.32% | ▼ −11.84% | $27.66 (−6.01%) |
Sep 18, 2026 5w ago | Insider Cluster | $27.86 $23.95 | ▲ +14.03% | ▲ +13.13% | $27.66 (+0.72%) |
Aug 20, 2026 9w ago | Insider Cluster | $25.99 $27.86 | ▲ +7.20% | ▲ +7.72% | $27.66 (+6.43%) |
Aug 19, 2026 9w ago | Insider Cluster | $25.44 $28.55 | ▼ −12.22% | ▼ −12.22% | $27.66 (−8.73%) |
Aug 18, 2026 10w ago | 144 | $25.49 $26.68 | ▲ +4.67% | ▲ +6.19% | $27.66 (+8.51%) |
Aug 17, 2026 10w ago | 144 | $24.56 $27.67 | ▼ −12.66% | ▼ −13.97% | $27.66 (−12.62%) |
Jul 29, 2026 12w ago | Institutional Cluster | $24.18 $26.44 | ▼ −9.35% | ▼ −5.38% | $27.66 (−14.39%) |
Jul 23, 2026 13w ago | Insider Cluster | $22.27 $25.99 | ▲ +16.70% | ▲ +13.08% | $27.66 (+24.20%) |
US Market Status
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