ADPT Form 144: insider proposes sale of common shares

Sharon Benzeno submitted a Form 144 notice to sell Common Stock.

Rhea-AI Filing Summary

Sharon Benzeno submitted a Form 144 notice to sell Common Stock. The filing lists proposed sales tied to an exercise of stock options of 101,458 shares (dated 06/29/2026) and to Restricted Stock Units of 51,473 shares (dated 03/04/2026). The filing also reports a 10b5-1 sale of 11,034 shares on 06/26/2026 for $231,716.21. The cover lists 160,044,392 shares outstanding as of 06/29/2026 as a baseline figure.

Insights

Corporate Governance Analyst

Routine Form 144 sale notice showing option exercise and 10b5-1 activity.

The filing documents proposed dispositions tied to an exercise of stock options for 101,458 shares and 51,473 RSUs, plus a recent 10b5-1 sale of 11,034 shares for $231,716.21. These are execution-level disclosures required under federal rules.

Timing and exact sale mechanics are tied to the listed dates (03/04/2026, 06/26/2026, 06/29/2026). Cash‑flow treatment and whether proceeds go to the issuer or holder are not specified in the provided excerpt; subsequent filings may state final transaction details.

Key Figures

Shares outstanding: 160,044,392 shares Option exercise shares proposed: 101,458 shares RSUs proposed: 51,473 shares +4 more

7 metrics

Shares outstanding 160,044,392 shares as of <date>06/29/2026</date>

Option exercise shares proposed 101,458 shares Exercise of Stock Options dated <date>06/29/2026</date>

RSUs proposed 51,473 shares Restricted Stock Units dated <date>03/04/2026</date>

Completed 10b5-1 sale 11,034 shares Sold on <date>06/26/2026</date>

Proceeds reported for completed sale $231,716.21 Proceeds from 10b5-1 sale on <date>06/26/2026</date>

Filer identifier 152931 Filer information field

Form reference number 3205433.76 Cover data field

Key Terms

10b5-1, Restricted Stock Units, Exercise of Stock Options, Form 144

4 terms

10b5-1 regulatory

"10b5-1 Sales for SHARON BENZENO 1165 Eastlake Avenue East Seattle WA 98109"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Restricted Stock Units financial

"Restricted Stock Units | Issuer | | | 51473 | 03/04/2026"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Exercise of Stock Options financial

"Common | 06/29/2026 | Exercise of Stock Options | Issuer | | | 101458"

Form 144 regulatory

"Filer Information | | | 144: Filer Information"

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.

FAQ

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

What does ADPT's Form 144 filed by Sharon Benzeno report?

It reports proposed sales tied to an option exercise of 101,458 shares (dated 06/29/2026) and 51,473 RSUs (dated 03/04/2026), plus a recent 10b5-1 sale of 11,034 shares on 06/26/2026 for $231,716.21.

Did the filing disclose any completed insider sales for ADPT?

Yes. The excerpt shows a completed 10b5-1 sale of 11,034 shares on 06/26/2026 with gross proceeds of $231,716.21. Other listed dispositions are proposed in the Form 144 notice.

How many ADPT shares are referenced as outstanding in the filing?

The cover lists 160,044,392 shares outstanding as of 06/29/2026. This figure appears as a baseline context number in the filing excerpt and is not described as being offered for sale.

Are the proposed sales in the Form 144 part of a 10b5-1 plan for ADPT?

The filing references at least one sale executed under a 10b5-1 plan (the 11,034-share sale on 06/26/2026). The Form 144 also lists proposed option-related and RSU-related dispositions with their respective dates.

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

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Accepted by SEC EDGAR 06/29/2026 - 04:48 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	0001780854
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	2066590067
Name of Person for Whose Account the Securities are To Be Sold	SHARON BENZENO
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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	152931	3205433.76	160044392	06/29/2026	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	06/29/2026	Exercise of Stock Options	Issuer			101458	06/29/2026	Cash
Common	03/04/2026	Restricted Stock Units	Issuer			51473	03/04/2026	N/A

* 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
10b5-1 Sales for SHARON BENZENO 1165 Eastlake Avenue East Seattle WA 98109	Common	06/26/2026	11034	231716.21

144: Remarks and Signature

Remarks
Date of Notice	06/29/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/12/2025
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	/s/ Sharon Benzeno
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)