ADPT insider Chad Robins lists multiple Rule 144 stock sales

Adaptive Biotechnologies (ADPT) insider Chad M. Robins reported multiple proposed sales of Common Stock under Rule 144.

Rhea-AI Filing Summary

Adaptive Biotechnologies (ADPT) insider Chad M. Robins reported multiple proposed sales of Common Stock under Rule 144. The excerpt lists repeated dispositions of 41,666 shares on 11/26/2025, 12/01/2025, 01/05/2026 and 02/02/2026, plus a 35,736-share entry on 11/26/2025. Each row shows a gross sale amount in dollars alongside the share counts.

Insights

Corporate Governance Analyst

Multiple Rule 144 sale notices from the same insider, all routine disclosures.

These entries list several proposed dispositions by Chad M. Robins, mainly 41,666 shares on four separate dates and one 35,736 share entry, with per-row dollar amounts shown. Rule 144 notices are disclosure-driven and do not by themselves confirm completed open-market trades.

Impact depends on whether these sales were executed; subsequent Form 4/Form 5 or broker records would confirm actual transactions and proceeds. Timing and final cash‑flow treatment are not stated in the excerpt.

FAQ

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

What did Chad M. Robins disclose in the ADPT Form 144?

He reported multiple proposed dispositions of Common Stock, primarily 41,666 shares on several dates. The excerpt lists sales dated 11/26/2025, 12/01/2025, 01/05/2026, and 02/02/2026, plus a 35,736-share entry.

Do these Form 144 rows confirm completed sales for ADPT insider trades?

No; Form 144 notifies of proposed sales under Rule 144 and does not confirm execution. Completion would typically appear in subsequent filings (Form 4 or broker confirmations). The excerpt shows proposed disposal dates and dollar amounts per row.

How many shares per transaction does the ADPT excerpt show most frequently?

Most listed rows show proposed dispositions of 41,666 shares per entry. The excerpt includes multiple such entries on different dates and one 35,736-share entry on 11/26/2025.

Are dollar values included in the ADPT Form 144 excerpt and what do they show?

Yes; each row pairs a share count with a gross dollar amount (for example, several rows show values like $762,950.29 and $774,225.11). These figures appear alongside the listed share dispositions.

Does the Form 144 indicate who receives proceeds from these ADPT sales?

The excerpt lists the reporting person as Chad M. Robins and the issuer as the company, but it does not state the recipient of proceeds. Cash‑flow treatment is not specified in the provided excerpt.

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

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Accepted by SEC EDGAR 02/27/2026 - 04:47 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	182891	2929913.82	153981561	02/27/2026	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	09/01/2009	Founder's Shares	The Issuer			182891	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	02/02/2026	41666	762950.29
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	02/02/2026	41666	774225.11
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	02/02/2026	41666	767821.05
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	11/26/2025	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	02/27/2026
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)