Michelle Griffin reports sale of 48,044 ADPT shares

Michelle Griffin reported sales of Common Stock.

Accepted by SEC EDGAR 03/11/2026 - 04:21 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Michelle Griffin reported sales of Common Stock. The filing shows Ms. Griffin disposed of 48,044 shares on 03/03/2026 for $735,299.01. The form also lists 15,394 restricted shares associated with Morgan Stanley Smith Barney LLC dated 03/04/2026.

Insights

Insider Transactions Analyst

Routine Form 144 sale by an individual insider or related account.

The filing documents a reported sale of 48,044 shares on 03/03/2026 generating $735,299.01. This is presented as a disposal event under Form 144 reporting rules.

Timing and method details beyond the sale date and gross proceeds are not provided; subsequent filings would clarify if sales were executed under a plan or as part of other transactions.

FAQ

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

What did ADPT insider Michelle Griffin report on Form 144?

Michelle Griffin reported a sale of 48,044 shares on 03/03/2026, with reported gross proceeds of $735,299.01. The form also lists 15,394 restricted shares dated 03/04/2026 tied to Morgan Stanley Smith Barney LLC.

Does the filing state who received the proceeds from the sale?

The filing lists gross proceeds of $735,299.01 for the 48,044-share sale, but it does not specify the recipient party or how proceeds were allocated in the provided excerpt.

Are there securities listed for future sale in the filing?

Yes. The excerpt lists 15,394 restricted shares dated 03/04/2026 associated with Morgan Stanley Smith Barney LLC, identified under the securities to be sold section.

What dates are shown in the Form 144 excerpt for these transactions?

The sale transaction date is 03/03/2026 (48,044 shares). The securities-to-be-sold entry is dated 03/04/2026, and a filing/processing date of 03/11/2026 appears in the excerpt.

Does this Form 144 indicate whether the sale was part of a Rule 10b5-1 plan?

The provided excerpt does not state whether the reported sale was effected under a Rule 10b5-1 plan or other prearranged trading program; the filing content does not include that disclosure.

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	0001229765
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	MICHELLE GRIFFIN
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	15394	214096.67	153981561	03/11/2026	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	03/04/2026	Restricted Stock	Issuer			15394	03/04/2026	Not Applicable

* 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
Michelle Griffin 1165 Eastlake Avenue East Seattle WA 98109	Common	03/03/2026	48044	735299.01

144: Remarks and Signature

Remarks
Date of Notice	03/11/2026
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/ Michelle Renee Griffin
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)