The cluster of C-suite sales is worth monitoring for further insider selling or a negative catalyst, but the modest size relative to market cap suggests limited immediate downside. Traders should watch for any upcoming 8-K or earnings release that could explain the selling pattern.
Price Chart
Executive Summary
Three C-suite executives at Adaptive Biotechnologies sold a total of $8.56M in shares over a one-week window. The sales represent ~0.24% of market cap, a modest amount, and include derivative exercises by the CSO. The cluster is notable for the involvement of multiple senior officers, but the dollar size is not material relative to the $3.5B market cap, and insider sales are generally weaker signals than buys.
Key Financial Metrics
Key Facts
- Chief Scientific Officer Harlan S. Robins exercised 284,800 derivatives and sold 492,400 shares ($10.78M) on July 21.
- Chief People Officer Francis Lo sold 105,800 shares at $22.59 for $2.39M on July 15.
- Chief Commercial Officer (MRD) Susan Bobulsky sold 5,000 shares at $23.00 for $115K on July 16.
- Total insider sales in the cluster: $8.56M, or ~0.24% of market cap.
- Past 30 days show 4 additional insider sells totaling $13.3M, indicating a sustained selling pattern.
Financial Impact
$8.56M in insider sales, representing ~0.24% of the $3.5B market cap
Risk Factors
- Continuation of insider selling could signal deteriorating confidence.
- Derivative exercises followed by sale may indicate management locking in gains ahead of a potential downturn.
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-1784851273185 |
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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