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ADPT - Adaptive Biotechnologies Corp

Insider Sale by Rubinstein Julie (Pres, COO)

1 Month
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Trade Summary

5 days ago, Rubinstein Julie, serving as Pres, COO at Adaptive Biotechnologies Corp (ADPT), sold 57,180 shares at $13.46 per share, for a total transaction value of $769,643.00. Following this transaction, Rubinstein Julie now holds 481,906 shares of ADPT.

This sale represents a 11.00% decrease in Rubinstein Julie's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Thursday, March 19, 2026 and publicly disclosed via SEC Form 4 filing on Monday, March 23, 2026, 4 days after the trade was made.

Adaptive Biotechnologies Corp operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.

Rubinstein Julie

Pres, COO

Julie Rubinstein is the President and Chief Operating Officer of Adaptive Biotechnologies, a commercial-stage biotech company focused on translating adaptive immune system genetics into clinical diagnostic and therapeutic products[[1]](https://www.adaptivebiotech.com/adaptive-leadership/julie-rubinstein/). Since joining the company in 2011, she has held progressively senior leadership roles overseeing Life Sciences Research, Clinical Diagnostics, Drug Discovery, Corporate Marketing, and Business Development, and was instrumental in the company's successful 2019 initial public offering[[1]](https://www.adaptivebiotech.com/adaptive-leadership/julie-rubinstein/). Prior to Adaptive, Rubinstein held worldwide commercial development positions at Pfizer Oncology specializing in cancer immunotherapy, and worked at Johnson & Johnson's Ethicon Endo-Surgery division where she helped commercialize a breast cancer diagnostic device across major European markets[[1]](https://www.adaptivebiotech.com/adaptive-leadership/julie-rubinstein/). She began her career as a financial analyst in Morgan Stanley's Global Health Care Group[[1]](https://www.adaptivebiotech.com/adaptive-leadership/julie-rubinstein/). Rubinstein holds a dual degree, summa cum laude and Phi Beta Kappa, from the University of Pennsylvania's Wharton School and Annenberg School of Communications with a minor in French, as well as an MBA from Harvard Business School[[1]](https://www.adaptivebiotech.com/adaptive-leadership/julie-rubinstein/). She serves on the Board of Trustees for The Valerie Fund, a pediatric oncology organization in New Jersey and New York[[1]](https://www.adaptivebiotech.com/adaptive-leadership/julie-rubinstein/).

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Trade Price

$13.46

Quantity

57,180

Total Value

$769,643.00

Shares Owned

481,906

Trade Date

Thursday, March 19, 2026

5 days ago

SEC Filing Date

Monday, March 23, 2026

Filed 4 days after trade

HEALTHCAREBIOTECHNOLOGY

About Adaptive Biotechnologies Corp

Company Overview

No company information available
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