ADPT Form 144: Affiliate Lists 22,564 Shares to Sell

ADPT affiliate files Form 144 to sell shares.

Accepted by SEC EDGAR 04/08/2026 - 04:33 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

ADPT affiliate files Form 144 to sell shares. The filing lists 2,344 shares to be sold upon exercise of stock options dated 04/08/2026 and 20,220 shares issuable under Restricted Stock Units dated 03/04/2025. The filing also reports recent 10b5-1 sales: 30,593 shares on 03/11/2026 for $430,622.58, 38,074 shares on 03/05/2026 for $574,536.66, and 79,590 shares on 01/12/2026 for $1,411,393.35.

Key Figures

Shares to be sold (options): 2,344 shares RSUs issuable: 20,220 shares 10b5-1 sale 1: 30,593 shares +2 more

5 metrics

Shares to be sold (options) 2,344 shares Exercise of stock options dated 04/08/2026

RSUs issuable 20,220 shares Restricted Stock Units dated 03/04/2025

10b5-1 sale 1 30,593 shares Sale on 03/11/2026 for $430,622.58

10b5-1 sale 2 38,074 shares Sale on 03/05/2026 for $574,536.66

10b5-1 sale 3 79,590 shares Sale on 01/12/2026 for $1,411,393.35

Key Terms

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

4 terms

Form 144 regulatory

"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.

10b5-1 Sales regulatory

"10b5-1 Sales for FRANCIS LO 1165 Eastlake Avenue East"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Restricted Stock Units financial

"Restricted Stock Units | Issuer | 20,220 | 03/04/2025"

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

"Exercise of Stock Options | Issuer | 2,344 | 04/08/2026"

FAQ

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

What does ADPT's Form 144 disclose about shares being sold?

The Form 144 lists 2,344 shares to be sold on exercise of options and 20,220 shares issuable from RSUs, with dates 04/08/2026 and 03/04/2025 respectively. These are the securities described for sale in the filing.

How many ADPT shares were sold under 10b5-1 plans in the past three months?

The filing reports three 10b5-1 sales: 30,593, 38,074, and 79,590 shares on 03/11/2026, 03/05/2026, and 01/12/2026. Each sale includes the reported cash proceeds.

What cash proceeds are reported for recent ADPT 10b5-1 sales?

Proceeds reported are $430,622.58 (30,593 shares), $574,536.66 (38,074 shares), and $1,411,393.35 (79,590 shares). Each amount is listed next to the corresponding sale date in the filing.

Are the RSUs and option exercises in ADPT's Form 144 described with dates?

Yes. The RSUs are dated 03/04/2025 showing 20,220 shares issuable, and the option exercise is dated 04/08/2026 for 2,344 shares. Dates are included in the securities-to-be-sold section.

Who is the broker or intermediary listed on the ADPT Form 144?

The filing names Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza as the broker/intermediary associated with the transaction entries included on the Form 144.

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	0001780660
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	FRANCIS LO
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	22564	309352.44	153981561	04/08/2026	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	04/08/2026	Exercise of Stock Options	Issuer			2344	04/08/2026	Cash
Common	03/04/2025	Restricted Stock Units	Issuer			20220	03/04/2025	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 FRANCIS LO 1165 Eastlake Avenue East Seattle WA 98109	Common	03/11/2026	30593	430622.58
FRANCIS LO 1165 Eastlake Avenue East Seattle WA 98109	Common	03/05/2026	38074	574536.66
10b5-1 Sales for FRANCIS LO 1165 Eastlake Avenue East Seattle WA 98109	Common	01/12/2026	79590	1411393.35

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units on 03/04/2025 and 03/04/2026.
Date of Notice	04/08/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/15/2025
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/ Francis Lo
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)