[144] Adaptive Biotechnologies Corp SEC Filing

Rhea-AI Filing Summary

Adaptive Biotechnologies insider sale reported: Chad M. Robins reported multiple sales of Common Stock under Rule 144, with transactions dated between 01/05/2026 and 03/03/2026. The reported lots include individual sales such as 41,666 shares, 99,225 shares, 116,334 shares, and others, each with an accompanying cash amount in USD. The filings list broker details and aggregate per‑lot proceeds; timing and direction are sales as reported.

Insights

Corporate Governance Analyst

Multiple Rule 144 sales by CEO reported across January–March 2026.

The filings list repeated dispositions of Common Stock by Chad M. Robins, showing individual trade sizes such as 41,666, 99,225, and 116,334 shares with per‑lot proceeds in USD.

These are compliance‑style disclosures under resale rules; cash‑flow recipients and broader ownership impact require referenced holdings or subsequent filings to assess materiality.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	53083	853574.64	153981561	03/03/2026	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	09/01/2009	Founder's Shares	The Issuer			53083	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	03/02/2026	41666	653256.21
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	03/02/2026	41666	653197.88
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stcok	02/02/2026	41666	774225.11
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	02/27/2026	99225	1589941.71
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	03/02/2026	41666	653185.38
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	02/27/2026	83666	1334138.04
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	03/02/2026	47692	765752.29
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	03/02/2026	116334	1848151.72

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

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