Insider Trading April 10, 2026 06:52 PM

Adaptive Biotechnologies CSO Disposes of $148,500 in Shares Ahead of Price Drop

Harlan S. Robins sold 10,000 ADPT shares under a 10b5-1 plan; stock has since moved lower and is flagged as overvalued by InvestingPro

By Sofia Navarro ADPT
Adaptive Biotechnologies CSO Disposes of $148,500 in Shares Ahead of Price Drop
ADPT

Adaptive Biotechnologies Chief Scientific Officer Harlan S. Robins sold 10,000 shares of common stock on April 8, 2026, for total proceeds of $148,500. The disposals, executed in multiple tranches under a Rule 10b5-1 trading plan adopted in August 2025, occurred at prices between $14.65 and $15.06. After the transactions Robins holds 1,512,058 shares. The sale preceded a roughly 14% drop in ADPT over the past week to $12.79, and InvestingPro classifies the stock as currently overvalued relative to its Fair Value. The report also notes separate fourth-quarter 2025 results for Adeptus Biotechnologies Corp, where EPS and revenue beat expectations and several brokers adjusted coverage and price targets.

Key Points

  • Harlan S. Robins sold 10,000 shares of Adaptive Biotechnologies on April 8, 2026, receiving $148,500 in total proceeds; sale prices ranged from $14.65 to $15.06.
  • The sale was executed under a Rule 10b5-1 trading plan adopted by Robins on August 11, 2025; after the transactions he directly owns 1,512,058 shares.
  • ADPT shares have fallen to $12.79, down roughly 14% over the past week, and InvestingPro lists the stock as overvalued relative to its Fair Value.

Harlan S. Robins, who serves as Chief Scientific Officer at Adaptive Biotechnologies (NASDAQ:ADPT), executed a sale of 10,000 shares of the company's common stock on April 8, 2026, generating total proceeds of $148,500.

The transactions were completed in multiple tranches at prices ranging from $14.65 to $15.06 per share. Following these sales Robins is reported to directly own 1,512,058 shares of Adaptive Biotechnologies.

The disposition took place under a Rule 10b5-1 trading plan that Robins adopted on August 11, 2025. The timing of the sale preceded a notable move lower in ADPT shares; the stock is currently trading at $12.79, reflecting an approximate 14% decline over the last week.

According to InvestingPro analysis, ADPT is trading above its Fair Value and is included on the Most Overvalued list maintained by that research service. Investors interested in additional detail are directed to ADPT's Pro Research Report, which InvestingPro makes available alongside coverage of more than 1,400 other U.S. equities.


In a separate set of company-specific developments, Adeptus Biotechnologies Corp reported fourth-quarter 2025 results that exceeded analyst expectations. The company posted earnings per share of -$0.09, versus an anticipated -$0.18, representing a 50% positive surprise relative to the forecast. Revenue for the quarter totaled $71.7 million, above the consensus estimate of $59.33 million by roughly 20.85%.

Following those results, several brokerages adjusted their outlooks on Adeptus Biotechnologies Corp. BTIG raised its price target to $22.00, citing strong growth in the company's Minimal Residual Disease (MRD) business, which grew 54% year-over-year in Q4 2025. TD Cowen increased its price target to $21.00 while retaining its prior rating, and Piper Sandler reiterated an Overweight rating, pointing to the company's MRD positioning and projected volume expansion.


The facts presented here are confined to reported transactions, stated ownership after the sale, the disclosed 10b5-1 plan adoption date, current share price and recent price movement, InvestingPro's Fair Value classification, and the cited fourth-quarter 2025 financial results and subsequent broker reactions for Adeptus Biotechnologies Corp. No additional implications beyond those reported are asserted.

Risks

  • Market risk reflected in ADPTs recent roughly 14% decline over the prior week - impacts equity investors in biotechnology and related market sectors.
  • Valuation risk signaled by InvestingPros classification of ADPT as overvalued relative to Fair Value - relevant to investors evaluating entry or holding decisions in biotech equities.
  • Ownership concentration and insider disposition - material to shareholder structure considerations for Adaptive Biotechnologies and potential perceptions among market participants.

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