Insider plans Rule 144 sale of ADPT shares

Chad M. Robins filed a Rule 144 notice to sell 124,998 shares of common stock, with an aggregate market value of $2,298,713.22, through Goldman Sachs & Co. LLC on or about 02/02/2026 on the NASD exchange.

Rhea-AI Filing Summary

Chad M. Robins filed a Rule 144 notice to sell 124,998 shares of common stock, with an aggregate market value of $2,298,713.22, through Goldman Sachs & Co. LLC on or about 02/02/2026 on the NASD exchange.

The shares include stock acquired as performance-based compensation on 03/04/2022 (119,419 shares) and earlier founder’s shares from 09/01/2009 (5,579 shares). The issuer had 152,665,188 shares outstanding. Robins has already completed multiple common stock sales in recent months between 11/10/2025 and 01/05/2026.

FAQ

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

What does the ADPT Rule 144 filing by Chad M. Robins disclose?

The filing discloses that Chad M. Robins plans to sell 124,998 shares of ADPT common stock under Rule 144. It provides details about the planned broker, market value, prior sales, acquisition dates, and how the shares were originally obtained.

How many ADPT shares is Chad M. Robins planning to sell under Rule 144?

Chad M. Robins plans to sell 124,998 shares of ADPT common stock. The filing lists an aggregate market value of $2,298,713.22 for this block, to be sold through Goldman Sachs & Co. LLC on or about February 2, 2026.

How were the ADPT shares in Chad M. Robins’ Rule 144 filing acquired?

Most of the shares, 119,419, were acquired on March 4, 2022 as performance-based compensation from the issuer. An additional 5,579 shares are listed as founder’s shares acquired on September 1, 2009, also from the issuer.

What recent ADPT stock sales by Chad M. Robins are listed in the filing?

The filing lists multiple ADPT common stock sales between November 10, 2025 and January 5, 2026. Individual transactions range from about 1,237 to 41,670 shares, with gross proceeds per trade generally in the several-hundred-thousand-dollar range.

How many ADPT shares were outstanding when the Rule 144 sale was planned?

The filing states that 152,665,188 shares of ADPT common stock were outstanding. This figure provides baseline context for the planned 124,998-share Rule 144 sale proposed by Chad M. Robins through Goldman Sachs & Co. LLC.

Which broker and exchange are named for the planned sale of ADPT shares?

Goldman Sachs & Co. LLC, located at 200 West Street, New York, NY 10282, is listed as the broker for the planned 124,998-share sale. The securities are expected to trade on the NASD market according to the filing.

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

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Accepted by SEC EDGAR 02/02/2026 - 05:24 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	0001780649
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	Chad 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	124998	2298713.22	152665188	02/02/2026	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	03/04/2022	Acquired as compensation -- Performance Awards	The Issuer			119419	03/04/2022	Compensation
Common Stock	09/01/2009	Founder's Shares	The Issuer			5579	09/01/2009	None

* 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
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	01/05/2026	41666	649206.28
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	01/05/2026	41666	641710.57
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	11/10/2025	4058	60911.39
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	12/01/2025	41666	788291.55
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	01/05/2026	41666	658068.64
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	11/10/2025	40433	590010.47
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	12/01/2025	41666	793433.14
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	12/01/2025	41666	785287.44
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	11/10/2025	41670	618224.45
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	11/11/2025	1237	18026.92
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	11/12/2025	1876	28147.5
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	11/26/2025	35736	703380.97

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	02/02/2026
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 Chad Robins
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)