ADPT files Rule 144 for RSUs and PSUs

ADPT filed a Rule 144 notice describing proposed sales of equity awards dated 03/10/2026.

Accepted by SEC EDGAR 03/16/2026 - 08:40 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

ADPT filed a Rule 144 notice describing proposed sales of equity awards dated 03/10/2026. The filing lists 140,666 Restricted Stock Units and 329,600 Performance Stock Units to be sold by the issuer through Morgan Stanley Smith Barney LLC.

The filing also reports recent open-market sales by Harlan Robins during Jan–Mar 2026, including multiple transactions such as 14,233 and 10,000 shares on March and January dates.

FAQ

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

What did ADPT disclose in the Form 144 filing?

The filing reports proposed sales of equity awards dated 03/10/2026. It lists 140,666 Restricted Stock Units and 329,600 Performance Stock Units designated as securities to be sold through Morgan Stanley Smith Barney LLC.

Who is listed as the broker or selling agent in the ADPT Form 144?

The filing names Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza, 8th Floor as the broker/agent. That entity is recorded in the securities and filer information on the Form 144 excerpt.

Which recent sales by insiders are reported in the filing for ADPT?

The filing shows multiple sales by Harlan Robins in Jan–Mar 2026, including transactions of 14,233, 10,000, 32,273, and other share amounts with dollar values reported alongside each sale.

Are the securities to be sold ordinary shares or award instruments?

The excerpt identifies the securities as award instruments: Restricted Stock Units (140,666) and Performance Stock Units (329,600), each dated 03/10/2026, with the issuer listed as the seller of those units.

What dates are associated with the reported sales and awards in the ADPT filing?

Award grant dates for the listed RSUs and PSUs are 03/10/2026. Reported open-market sales by Harlan Robins occurred on dates in 01/06/2026, 02/02–03/2026, and 03/02–03/2026 as shown in the excerpt.

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

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	0001780851
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 Corp
SEC File Number	001-38957
Address of Issuer	1165 EASTLAKE AVE E SEATTLE WASHINGTON 98109
Phone	206-659-0067
Name of Person for Whose Account the Securities are To Be Sold	ROBINS HARLAN S
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	470266	6828262.32	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	03/10/2026	Restricted Stock Units	Issuer			140666	03/10/2026	N/A
Common	03/10/2026	Performance Stock Units	Issuer			329600	03/10/2026	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
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	03/03/2026	14233	235129.16
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	03/02/2026	10000	157239.00
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	02/03/2026	515	9960.00
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	02/03/2026	7605	144288.14
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	02/02/2026	2395	44130.99
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	02/02/2026	32273	600732.85
Harlan Robins 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	01/06/2026	10000	164412.00

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units and performance stock units on 3/4/2026.
Date of Notice	03/16/2026
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/ Harlan Robins
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)