Traders should monitor for potential downward pressure on ADPT shares, especially given the concentration of sales among top executives. Consider whether this cluster precedes negative news, earnings weakness, or a lack of confidence in near-term valuation. No offsetting insider buys were reported.
Price Chart
Executive Summary
Multiple C-suite executives and directors at Adaptive Biotechnologies sold shares in a concentrated 7-day window, including CEO Chad Robins and CSO Harlan Robins who each sold over $1.8M in stock. These open-market sales total $7.8M in proceeds, representing a material insider selling cluster.
Key Financial Metrics
Key Facts
- CEO Chad Robins sold 140,567 shares for $1,851,267.39
- CSO Harlan Robins sold 140,666 shares for $1,852,571.22
- CFO Kyle Piskel sold 18,672 shares for $245,910.24
- President and COO Julie Rubinstein sold 246,644 shares across multiple days for $3.2M in total proceeds
- Other C-suite and directors sold an additional $1.7M in shares
- Total open-market sales: 7 insiders, $7.8M in aggregate proceeds
- All sales occurred between March 9–13, 2026, indicating a coordinated cluster
- Julie Rubinstein’s derivative exercises (M transactions) are non-cash events and not economically equivalent to buying
Financial Impact
$7.8 million in open-market insider sales over 7 days
Risk Factors
- Insider selling may signal overvaluation or upcoming negative developments
- Concentrated sales by scientific and commercial leadership could undermine investor confidence in pipeline or revenue execution
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CONTEXT: Insider Cluster Data (20 trades, 7d window) | cluster-ADPT-1773452232331 |
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 9w 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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