Adaptive Biotechnologies plans $3.1M stock sale

Adaptive Biotechnologies Corp. (ADPT) reports a planned sale of common stock under a Form 144.

Rhea-AI Filing Summary

Adaptive Biotechnologies Corp. (ADPT) reports a planned sale of common stock under a Form 144. The disclosure lists 124,690 common shares to be handled through Morgan Stanley Smith Barney LLC Executive Financial Services, alongside a dollar figure of $3,136,046.03 and a share figure of 159,595,842 as of 08/17/2026. The breakdown of securities covers stock option exercise shares, restricted stock grants from several grant dates, and previously exercised shares, all scheduled in connection with a planned sale date of 08/17/2026 on NASDAQ.

Key Figures

Listed common shares line item: 124,690 shares Associated dollar figure: $3,136,046.03 Referenced share figure: 159,595,842 shares +4 more

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Listed common shares line item 124,690 shares Common stock entry in the securities information section associated with Morgan Stanley Smith Barney LLC

Associated dollar figure $3,136,046.03 Dollar amount shown alongside 124,690 common shares in the securities information line

Referenced share figure 159,595,842 shares Share number listed in the same securities information line as of 08/17/2026

Planned sale date 08/17/2026 Date shown in the securities information line for the common stock entry

Stock option exercise shares 15,000 shares Common stock labeled Stock Option Exercise dated 08/17/2026 in the securities to be sold section

Restricted stock grant 03/04/2025 31,328 shares Restricted Stock entry dated 03/04/2025 in the securities to be sold breakdown

Exercised shares 03/10/2025 40,000 shares Common stock labeled Exercised Shares dated 03/10/2025 in the securities to be sold section

Key Terms

Form 144, Stock Option Exercise, Restricted Stock, Exercised Shares

4 terms

Form 144 regulatory

"ADPT reports a planned sale of common stock under a Form 144."

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.

Stock Option Exercise financial

"Common | 08/17/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Restricted Stock financial

"Common | 03/04/2026 | Restricted Stock | Issuer"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Exercised Shares financial

"Common | 03/10/2025 | Exercised Shares | Issuer"

FAQ

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

What does ADPT’s latest Form 144 filing disclose?

The Form 144 for ADPT discloses a planned sale of common stock. It lists 124,690 shares, a related amount of $3,136,046.03, and a share figure of 159,595,842 in connection with a proposed sale on 08/17/2026.

How many ADPT shares are covered by the planned sale in this Form 144?

The Form 144 lists 124,690 common shares in the securities information section. A detailed breakdown includes stock option exercise shares, multiple restricted stock grants from 2022–2025, and previously exercised shares tied to the planned sale.

What dollar amount is associated with the ADPT shares in the Form 144?

The securities information line for ADPT includes a dollar figure of $3,136,046.03 next to the 124,690 common shares. This amount is presented together with these shares as part of the planned sale disclosure.

When is the planned sale date for the ADPT common stock under this Form 144?

The Form 144 lists 08/17/2026 in the securities information line for ADPT. This date appears with the common shares and dollar figure, indicating the approximate timing associated with the proposed sale on NASDAQ.

Which broker is involved in handling the ADPT Form 144 share sale?

The securities information section identifies Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004. This broker is listed in connection with the planned sale of ADPT common shares.

What types of ADPT securities are listed in the Form 144 breakdown?

The breakdown lists Stock Option Exercise, multiple Restricted Stock entries dated from 02/14/2022 through 03/04/2025, and Exercised Shares dated 03/10/2025, each with specific share amounts to be included in the planned sale.

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

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Available on EDGAR 08/17/2026 - 04:49 PM Accepted by SEC EDGAR 08/17/2026 - 04:49 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	0001237566
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	(206) 659-0067
Name of Person for Whose Account the Securities are To Be Sold	PETER NEUPERT
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	Director

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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	124690	3136046.03	159595842	08/17/2026	NASDAQ

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	08/17/2026	Stock Option Exercise	Issuer			15000	08/17/2026	Cash
Common	03/04/2026	Restricted Stock	Issuer			15394	03/04/2026	Not Applicable
Common	01/26/2023	Restricted Stock	Issuer			6689	01/26/2023	Not Applicable
Common	03/04/2024	Restricted Stock	Issuer			14775	03/04/2024	Not Applicable
Common	02/14/2022	Restricted Stock	Issuer			1504	02/14/2022	Not Applicable
Common	03/04/2025	Restricted Stock	Issuer			31328	03/04/2025	Not Applicable
Common	03/10/2025	Exercised Shares	Issuer			40000	03/10/2025	Cash

* 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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/17/2026
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	/s/ Peter Matthew Neupert
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)