ADPT Form 144: Affiliate Lists Multiple Common Stock Sales

Adaptive Biotechnologies (ADPT) notice of proposed sales of Common Stock by an affiliate under Form 144.

Accepted by SEC EDGAR 04/06/2026 - 05:22 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Adaptive Biotechnologies (ADPT) notice of proposed sales of Common Stock by an affiliate under Form 144. The excerpt lists multiple proposed sale transactions by Chad M. Robins with individual trades ranging from 4,452 to 99,225 shares and corresponding gross proceeds shown per trade.

Insights

Corporate Finance Analyst

Routine affiliate resale notification showing multiple share dispositions.

The filing lists numerous proposed sales of Common Stock by an affiliate, including multiple dates in January–March 2026 and per-trade share counts such as 99,225 shares and 96,323 shares. These are standard resale notices used to comply with securities rules.

Cash-flow treatment and whether trades were executed are not shown in the excerpt. Subsequent broker reports or amended filings would confirm execution and any impact on outstanding float.

Key Figures

Largest single trade shown: 99,225 shares Other large trade: 96,323 shares Repeated lot size: 41,666 shares +1 more

4 metrics

Largest single trade shown 99,225 shares trade listed with $1,589,941.71 proceeds on 02/27/2026

Other large trade 96,323 shares trade listed with $1,546,542.82 proceeds on 03/02/2026

Repeated lot size 41,666 shares multiple entries dated January–March 2026 with varied gross proceeds

Smallest listed trade 4,452 shares trade listed with $71,681.21 proceeds on 03/03/2026

Key Terms

Form 144, Founder's Shares, Common Stock

3 terms

Form 144 regulatory

"Common Stock | Goldman Sachs & Co. LLC ... 153981561 | 04/06/2026 | NASD"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Founder's Shares market

"Common Stock | 09/01/2009 | Founder's Shares | The Issuer"

Common Stock financial

"Securities To Be Sold Common Stock | 09/01/2009"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

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

What does ADPT Form 144 filing mean?

Form 144 is a notice of proposed sale by an affiliate; it signals planned resale of insider-held stock. The excerpt shows multiple proposed sales by Chad M. Robins with individual trade sizes and gross proceeds listed on specific dates.

How many ADPT shares did the filing show being sold in large trades?

The excerpt includes large single trades such as 99,225 shares for $1,589,941.71 and 96,323 shares for $1,546,542.82. Other entries show repeated 41,666-share lots on various dates.

Do Form 144 entries mean the shares were sold for ADPT?

No. Form 144 is a proposed-sale notice; it does not prove execution. The excerpt lists proposed transactions and gross amounts per trade but does not confirm settlement or actual market trades.

Who is the reporting affiliate in the ADPT excerpt?

The excerpt identifies Chad M. Robins at an address in Seattle as the affiliate associated with the listed proposed Common Stock sales and multiple dated entries in early 2026.

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

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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	83332	1173314.56	153981561	04/06/2026	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			83332	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	653647.87
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	660993.59
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	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	655964.5
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	96323	1546542.82
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	03/02/2026	67703	1056383.45
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	03/03/2026	4452	71681.21
Chad M. Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	03/03/2026	48631	752258.35

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	04/06/2026
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)