This is a routine director-level sale tied to option exercise and RSU vesting. The amount is small relative to market cap and does not signal a change in company outlook. Monitor for any subsequent Form 4 filings to confirm whether the sale was executed, but no immediate trading action is warranted.
Price Chart
Executive Summary
Director Robert Hershberg filed a Form 144 to sell 30,664 shares of Adaptive Biotechnologies (ADPT) with an estimated market value of approximately $748,303. The sale is tied to a stock option exercise (15,000 shares) and the vesting of restricted stock (15,664 shares granted 03/04/2025). While the dollar amount is modest relative to the company's $4.0B market cap, the filing represents a director's intent to monetize equity, which is a routine insider transaction.
Key Facts
- Director Robert Hershberg filed Form 144 to sell 30,664 shares of ADPT common stock.
- Estimated aggregate market value of the proposed sale is approximately $748,303.
- The sale includes 15,000 shares from a stock option exercise and 15,664 shares from restricted stock vesting (granted 03/04/2025).
- The filing date is 2026-08-18; the proposed sale is planned for the same day on NASDAQ.
- The sale is being handled through Morgan Stanley Smith Barney LLC Executive Financial Services.
Financial Impact
Proposed sale of ~$748,303 in ADPT common stock by a director, representing approximately 0.02% of the company's $4.0B market cap.
Risk Factors
- Insider selling, even if routine, can create short-term overhang if the market misinterprets the signal.
- If additional insiders file similar 144s in the coming weeks, it could indicate a broader de-risking pattern.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 6 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (ADPT) — Batch item 1 | 0001950047-26-008364 |
| Document: 0001950047-26-008364-index.html | 0001950047-26-008364 |
| Document: 0001950047-26-008364.txt | 0001950047-26-008364 |
| 144 Filing (ADPT) — Batch item 4 | 0001950047-26-008364 |
| Document: 0001950047-26-008364-index.html | 0001950047-26-008364 |
| Document: 0001950047-26-008364.txt | 0001950047-26-008364 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 6, 2026 19d ago | 144 | $26.28 | awaiting T+20 | — | $26.27 (−0.04%) |
Oct 5, 2026 20d 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 9w 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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