ADPT Form 144: Proposed sale of 5,000 shares

ADPT filed a Form 144 notice listing a proposed sale of 5,000 shares of Common stock through Morgan Stanley Smith Barney LLC with a listed value of $85,350 and an associated date of 06/11/2026.

Rhea-AI Filing Summary

ADPT filed a Form 144 notice listing a proposed sale of 5,000 shares of Common stock through Morgan Stanley Smith Barney LLC with a listed value of $85,350 and an associated date of 06/11/2026.

The filing also discloses recent 10b5-1 sales by Susan Bobulsky of 11,000 shares on 06/04/2026 for $198,000. The excerpt lists 160,044,392 shares outstanding as of 06/11/2026 as a context figure.

Insights

Securities Counsel

Form 144 reports a brokered proposed resale and recent 10b5-1 transactions.

Form 144 in the excerpt shows a proposed brokered sale of 5,000 shares through Morgan Stanley Smith Barney LLC with a listed value of $85,350 and the date 06/11/2026. This is presented as a notice of intent to sell, not a completed transfer.

The excerpt also records prior 10b5-1 sales by Susan Bobulsky of 11,000 shares on 06/04/2026 for $198,000. Timing and cash‑flow treatment for the proposed 5,000 shares are those shown on the cover lines; subsequent filings would show execution details.

Key Figures

Proposed sale: 5,000 shares Listed value associated with 5,000 shares: $85,350 Recent 10b5-1 sale (Susan Bobulsky): 11,000 shares +2 more

5 metrics

Proposed sale 5,000 shares listed with broker on 06/11/2026

Listed value associated with 5,000 shares $85,350 line item appearing with 5,000 shares and 06/11/2026

Recent 10b5-1 sale (Susan Bobulsky) 11,000 shares sold on 06/04/2026

Proceeds from 10b5-1 sale $198,000 amount shown for 11,000 shares on 06/04/2026

Shares outstanding (context) 160,044,392 shares as of 06/11/2026

Key Terms

Form 144, 10b5-1, Previously Exercised Stock Options

3 terms

Form 144 regulatory

"144: Filer Information 144: Issuer Information 144: Securities 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.

10b5-1 regulatory

"10b5-1 Sales for SUSAN BOBULSKY 1165 Eastlake Avenue"

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.

Previously Exercised Stock Options financial

"Common | 01/25/2022 | Previously Exercised Stock Options"

FAQ

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

What does ADPT's Form 144 disclose about the proposed sale?

It states a proposed sale of 5,000 shares of Common stock through Morgan Stanley Smith Barney LLC. The filing lists a value of $85,350 and a date of 06/11/2026 as shown in the excerpt.

Did anyone recently sell ADPT shares under a 10b5-1 plan?

Yes. The excerpt shows Susan Bobulsky executed 10b5-1 sales of 11,000 shares on 06/04/2026 for $198,000. These sales are listed under "Securities Sold During The Past 3 Months."

Who is the broker handling the proposed sale in ADPT's filing?

The proposed sale is listed as handled by Morgan Stanley Smith Barney LLC. The excerpt lists the broker's address and associates the 5,000 shares and value with that broker entry.

What baseline share count is shown in the Form 144 excerpt?

The excerpt lists 160,044,392 shares outstanding as of 06/11/2026. This number appears on the same line as the 5,000 share entry and supplies a context figure in the filing.

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

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Accepted by SEC EDGAR 06/11/2026 - 04:37 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	0001820885
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	SUSAN BOBULSKY
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	5000	85350.00	160044392	06/11/2026	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	01/25/2022	Previously Exercised Stock Options	Issuer			5000	01/25/2022	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for SUSAN BOBULSKY 1165 Eastlake Avenue East Seattle WA 98109	Common	06/04/2026	11000	198000.00

144: Remarks and Signature

Remarks
Date of Notice	06/11/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/16/2025
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/ Susan Bobulsky
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)