ADPT insider plans sale of 3,000 shares

A holder of ADPT common stock filed a Form 144 indicating an intention to sell 3,000 shares through Morgan Stanley Smith Barney, with an aggregate market value of $74,790.00 as of August 10, 2026 on NASDAQ.

Rhea-AI Filing Summary

A holder of ADPT common stock filed a Form 144 indicating an intention to sell 3,000 shares through Morgan Stanley Smith Barney, with an aggregate market value of $74,790.00 as of August 10, 2026 on NASDAQ. These shares relate to Restricted Stock Units acquired from the issuer on March 4, 2023. The filing also lists recent Rule 10b5-1 plan sales for Susan Bobulsky over the past three months, including transactions of 11,000, 5,000, and 1,299 common shares on various dates in June and July 2026.

Key Figures

Planned shares to be sold: 3,000 shares Aggregate market value of planned sale: $74,790.00 RSUs acquired: 3,000 units +3 more

6 metrics

Planned shares to be sold 3,000 shares Common stock indicated for sale through Morgan Stanley Smith Barney

Aggregate market value of planned sale $74,790.00 Value associated with 3,000 common shares as of August 10, 2026

RSUs acquired 3,000 units Restricted Stock Units acquired from issuer on March 4, 2023

10b5-1 sale on June 4, 2026 11,000 shares for $198,000.00 Common stock sale for Susan Bobulsky under 10b5-1

10b5-1 sale on June 11, 2026 5,000 shares for $95,000.00 Common stock sale during past three months

10b5-1 sale on July 16, 2026 5,000 shares for $115,000.00 Common stock sale for Susan Bobulsky

Key Terms

Form 144, Restricted Stock Units, Rule 10b5-1

3 terms

Form 144 regulatory

"A holder of ADPT common stock filed a Form 144 indicating an intention"

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.

Restricted Stock Units financial

"These shares relate to Restricted Stock Units acquired from the issuer"

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.

Rule 10b5-1 regulatory

"The filing also lists recent Rule 10b5-1 plan sales for Susan Bobulsky"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

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

What does ADPT’s Form 144 filing disclose?

The Form 144 notes an intention to sell 3,000 common shares of ADPT through Morgan Stanley Smith Barney, with an aggregate market value of $74,790.00 as of August 10, 2026, and references prior Rule 10b5-1 plan sales.

How many ADPT shares are planned for sale under this Form 144?

The filing covers a proposed sale of 3,000 shares of ADPT common stock. These shares are to be sold through Morgan Stanley Smith Barney, with an indicated aggregate market value of $74,790.00 as of August 10, 2026.

What is the origin of the 3,000 ADPT shares in the Form 144?

The 3,000 ADPT shares relate to Restricted Stock Units acquired from the issuer on March 4, 2023. The Form 144 identifies the security type as Restricted Stock Units and the acquisition source as the issuer.

Which broker is listed for the planned ADPT share sale?

Morgan Stanley Smith Barney LLC Executive Financial Services is listed as the broker for the planned sale of 3,000 ADPT common shares, with an address at 1 New York Plaza, 8th Floor, New York, NY 10004.

What recent 10b5-1 sales of ADPT stock are reported for Susan Bobulsky?

Reported Rule 10b5-1 sales for Susan Bobulsky include 11,000 shares on June 4, 2026 for $198,000.00 and multiple 5,000-share transactions in June and July 2026, along with smaller trades such as 1,299 shares on July 30, 2026.

What ADPT sale amounts are shown for the past three months?

The filing lists several common stock sales, including 11,000 shares for $198,000.00 on June 4, 2026 and 5,000 shares for $115,000.00 on July 16, 2026, along with additional transactions between 487 and 5,000 shares.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 08/10/2026 - 04:38 PM Accepted by SEC EDGAR 08/10/2026 - 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	3000	74790.00	159595842	08/10/2026	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	03/04/2023	Restricted Stock Units	Issuer			3000	03/04/2023	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 SUSAN BOBULSKY 1165 Eastlake Avenue East Seattle WA 98109	Common	07/30/2026	1299	31176.00
10b5-1 Sales for SUSAN BOBULSKY 1165 Eastlake Avenue East Seattle WA 98109	Common	07/16/2026	5000	115000.00
10b5-1 Sales for SUSAN BOBULSKY 1165 Eastlake Avenue East Seattle WA 98109	Common	07/01/2026	487	10714.00
10b5-1 Sales for SUSAN BOBULSKY 1165 Eastlake Avenue East Seattle WA 98109	Common	06/25/2026	5000	102500.00
10b5-1 Sales for SUSAN BOBULSKY 1165 Eastlake Avenue East Seattle WA 98109	Common	06/11/2026	5000	95000.00
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	08/10/2026
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)