Monitor for further selling by C-suite, especially if stock price weakens. The large stock awards to Robins brothers may signal long-term confidence but also increase future dilution. Consider whether this selling wave follows strong stock performance or precedes a negative catalyst.
Price Chart
Executive Summary
Adaptive Biotechnologies COO Julie Rubinstein conducted a series of derivative exercises and open-market sales over three days, selling 81,341 shares for $1.2 million. CEO Chad Robins and CSO Harlan Robins received large non-cash stock awards, while Chief People Officer Francis Lo sold $575K in shares. The sales represent modest insider selling by key executives, primarily from option exercises.
Key Financial Metrics
Key Facts
- COO Julie Rubinstein sold 81,341 shares in open-market transactions from March 6–10, 2026, for total proceeds of $1.2 million.
- All sales were preceded by derivative exercises (options) at $6.55/share; some exercises were non-cash (cashless).
- CEO Chad Robins and CSO Harlan Robins were each granted 709,220 shares (non-cash), likely part of a long-term incentive plan.
- Chief People Officer Francis Lo sold 38,074 shares for $574,536.66 on March 5, 2026.
- Total open-market selling by insiders in the past 7 days: $1.77 million (including prior 30-day activity).
Financial Impact
$1.77 million in total open-market insider selling over the past 7–30 days, representing ~0.08% of market cap
Risk Factors
- Sustained insider selling could erode investor confidence.
- Large stock grants may lead to future dilution if not offset by buybacks or strong performance.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CONTEXT: Insider Cluster Data (12 trades, 7d window) | cluster-ADPT-1773187714941 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 6, 2026 20d ago | 144 | $26.28 | awaiting T+20 | — | $26.27 (−0.04%) |
Oct 5, 2026 21d ago | Insider Cluster | $26.90 | awaiting T+20 | — | $26.27 (−2.34%) |
Sep 25, 2026 4w ago | Press Release | $29.43 $25.51 | ▼ −13.32% | ▼ −11.84% | $26.27 (−10.74%) |
Sep 18, 2026 5w ago | Insider Cluster | $27.86 $23.95 | ▲ +14.03% | ▲ +13.13% | $26.27 (+5.71%) |
Aug 20, 2026 9w ago | Insider Cluster | $25.99 $27.86 | ▲ +7.20% | ▲ +7.72% | $26.27 (+1.08%) |
Aug 19, 2026 9w ago | Insider Cluster | $25.44 $28.55 | ▼ −12.22% | ▼ −12.22% | $26.27 (−3.26%) |
Aug 18, 2026 9w ago | 144 | $25.49 $26.68 | ▲ +4.67% | ▲ +6.19% | $26.27 (+3.06%) |
Aug 17, 2026 10w ago | 144 | $24.56 $27.67 | ▼ −12.66% | ▼ −13.97% | $26.27 (−6.96%) |
Jul 29, 2026 12w ago | Institutional Cluster | $24.18 $26.44 | ▼ −9.35% | ▼ −5.38% | $26.27 (−8.64%) |
Jul 23, 2026 13w ago | Insider Cluster | $22.27 $25.99 | ▲ +16.70% | ▲ +13.08% | $26.27 (+17.96%) |
US Market Status
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