ADPT Form 144: 3,160 RSUs Proposed Sale

Morgan Stanley Smith Barney LLC filed a Form 144 notice reporting a proposed sale of 3,160 Restricted Stock Units with an effective date of 05/15/2026.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC filed a Form 144 notice reporting a proposed sale of 3,160 Restricted Stock Units with an effective date of 05/15/2026. The filing also shows an earlier sale by Kyle Piskel of 18,672 shares on 03/11/2026 for $245,863.56.

Insights

Securities Compliance Officer

Notice of a routine affiliate resale of RSUs; prior sale recorded.

The filing lists a proposed sale of 3,160 Restricted Stock Units by an affiliate with an effective date of 05/15/2026. It is a regulatory notice of intent to sell rather than a completed open-market transaction.

Cash‑flow treatment and the ultimate timing depend on whether the sale occurs under the broker methods permitted by the resale notice; prior activity includes a 03/11/2026 disposition of 18,672 shares for $245,863.56. Subsequent filings would show execution details.

Key Figures

Proposed RSUs to be sold: 3,160 Restricted Stock Units Prior shares sold: 18,672 shares Proceeds from prior sale: $245,863.56 +1 more

4 metrics

Proposed RSUs to be sold 3,160 Restricted Stock Units effective <date>05/15/2026</date>

Prior shares sold 18,672 shares sale on <date>03/11/2026</date>

Proceeds from prior sale $245,863.56 consideration reported for the 03/11/2026 sale

Form type Form 144 notice of proposed sale by affiliate

Key Terms

Form 144, Restricted Stock Units, Issuer

3 terms

Form 144 regulatory

"filed a Form 144 notice reporting a proposed sale"

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

"proposed sale of 3,160 Restricted Stock Units"

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.

Issuer regulatory

"Restricted Stock Units | Issuer | 3160 | 05/15/2026"

FAQ

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

What does ADPT's Form 144 report?

It reports a proposed sale of 3,160 Restricted Stock Units with an effective date of 05/15/2026. The notice signals an affiliate intends to sell, not that shares have already been sold.

Who is listed as having sold shares recently for ADPT?

The filing shows Kyle Piskel sold 18,672 shares on 03/11/2026 for $245,863.56. That prior sale is recorded separately from the proposed RSU sale.

Are the proceeds recipient and sale method disclosed for ADPT?

The excerpt lists the securities and dates but does not state who receives proceeds or the exact sale method. Cash‑flow treatment and execution details are not specified in the provided excerpt.

Does ADPT's filing show shares outstanding or dilution impact?

The excerpt does not include an outstanding share count or dilution calculation. The filing lists specific sell quantities only: 3,160 RSUs proposed and a prior 18,672 share sale.

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

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Accepted by SEC EDGAR 05/15/2026 - 08:03 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	0001780662
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	PISKEL KYLE
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	3160	40542.80	160044392	05/18/2026	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	05/15/2026	Restricted Stock Units	Issuer			3160	05/15/2026	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
Kyle Piskel 1165 Eastlake Avenue East Seattle WA 98109	Common Stock	03/11/2026	18672	245863.56

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units on 5/15/2026. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a sell to cover transaction and does not represent a discretionary trade by the Seller.
Date of Notice	05/15/2026
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/ Kyle Piskel
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)