ADPT holder plans 8,120-share Form 144 stock sale

A shareholder of ADPT, identified as Harlan Robins, filed a notice to sell 8,120 shares of common stock through Goldman Sachs & Co. LLC, with an aggregate market value of 150,220, on or about 02/03/2026 on the NASD exchange.

Rhea-AI Filing Summary

A shareholder of ADPT, identified as Harlan Robins, filed a notice to sell 8,120 shares of common stock through Goldman Sachs & Co. LLC, with an aggregate market value of 150,220, on or about 02/03/2026 on the NASD exchange.

The shares to be sold were acquired on 03/06/2023 as compensation in the form of restricted stock units from the issuer. Over the prior three months, the same seller reported multiple open-market sales of common stock, with individual transactions ranging up to 27,212 shares and gross proceeds such as 506,428.93.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the ADPT Form 144 filing by Harlan Robins disclose?

The filing shows shareholder Harlan Robins plans to sell 8,120 shares of ADPT common stock through Goldman Sachs & Co. LLC. The planned sale has an aggregate market value of 150,220 and is expected to occur around 02/03/2026 on the NASD exchange.

How many ADPT shares did Harlan Robins sell in the past three months?

The notice lists several recent sales of ADPT common stock by Harlan Robins, including transactions of 27,212 shares for 506,428.93 in gross proceeds and other sales of 10,000 shares on multiple dates, plus smaller trades such as 2,395 shares for 44,130.99.

How were the ADPT shares in the planned Form 144 sale originally acquired?

The 8,120 shares of ADPT common stock were acquired on 03/06/2023 as compensation in the form of restricted stock units from the issuer. The filing states these shares were received from the issuer and identifies the nature of payment as compensation.

Which broker is handling the ADPT Form 144 stock sale for Harlan Robins?

The planned sale of 8,120 ADPT common shares will be handled by Goldman Sachs & Co. LLC, located at 200 West Street, New York, NY 10282. The transaction is listed to take place on the NASD securities exchange around 02/03/2026.

What is the outstanding share count referenced in the ADPT Form 144?

The notice indicates that ADPT has 152,665,188 shares of common stock outstanding. This figure provides context for the planned sale of 8,120 shares and the other recent transactions disclosed for shareholder Harlan Robins during the past three months.

What gross proceeds did recent ADPT stock sales by Harlan Robins generate?

Recent ADPT stock sales by Harlan Robins include gross proceeds such as 506,428.93 from selling 27,212 shares, 166,125 from 10,000 shares, and 600,732.85 from 32,273 shares, along with additional smaller trades listed in the filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/03/2026 - 05:09 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001780851
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Adaptive Biotechnologies Corporation
SEC File Number	001-38957
Address of Issuer	1165 Eastlake Avenue East Seattle WASHINGTON 98109
Phone	1-206-659-0067
Name of Person for Whose Account the Securities are To Be Sold	Harlan Robins
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	8120	150220	152665188	02/03/2026	NASD

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	03/06/2023	Acquired as compensation -- Restricted Stock Units	The Issuer			8120	03/06/2023	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	11/10/2025	10000	148213
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	01/06/2026	10000	164412
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	02/02/2026	2395	44130.99
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	12/03/2025	27212	506428.93
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	12/04/2025	10000	166125
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	02/02/2026	32273	600732.85

144: Remarks and Signature

Remarks	The sales of shares set forth herein are made in connection with a selling plan dated 8/11/2025, that is intended to comply with Rule 10b501(c).
Date of Notice	02/03/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/11/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Goldman Sachs & Co. LLC on behalf of Harlan Robins
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)