[144] Adaptive Biotechnologies Corp SEC Filing

Rhea-AI Filing Summary

ADPT submitted a Form 144 notice reporting proposed sales of common stock.

The filing lists a proposed sale of 5,000 common shares tied to previously exercised stock options dated 01/25/2022. The excerpt also discloses recent 10b5-1 sales by Susan Bobulsky: 11,000 shares on 06/04/2026 for $198,000 and 5,000 shares on 06/11/2026 for $95,000.

Insights

Securities Attorney

TL;DR: Routine Rule 144 notice and disclosed 10b5-1 sales; no new proceeds treatment specified.

The filing lists a proposed sale of 5,000 common shares described as issuable from previously exercised stock options dated 01/25/2022. It also records two recent 10b5-1 dispositions by Susan Bobulsky on 06/04/2026 and 06/11/2026, with aggregate proceeds of $293,000.

Timing and exact cash‑flow treatment for the proposed sale are not further detailed in the provided excerpt; regulatory mechanics (holding periods or resale conditions) are governed by Rule 144 and any plan language referenced on the face of the notice.

Capital Markets Analyst

TL;DR: Disclosed transactions are routine insider sales under a trading plan and a Rule 144 notice.

The excerpt shows two executed 10b5-1 sales totaling $293,000 and a listed proposed sale of 5,000 shares tied to prior option exercises. The figures are explicit: $198,000 (11,000 shares) and $95,000 (5,000 shares).

These are transactional disclosures rather than operational or financial results; their investor significance depends on broader ownership context, which is not included in the provided excerpt.

Key Figures

Proposed shares to be sold: 5,000 shares 10b5-1 sale on 06/04/2026: 11,000 shares 10b5-1 sale on 06/11/2026: 5,000 shares +2 more

5 metrics

Proposed shares to be sold 5,000 shares listed as tied to previously exercised options dated <date>01/25/2022</date>

10b5-1 sale on 06/04/2026 11,000 shares sale by Susan Bobulsky for <money>$198,000</money> on <date>06/04/2026</date>

10b5-1 sale on 06/11/2026 5,000 shares sale by Susan Bobulsky for <money>$95,000</money> on <date>06/11/2026</date>

Aggregate proceeds shown <money>$293,000</money> sum of the two disclosed 10b5-1 sales (<money>$198,000</money> + <money>$95,000</money>)

Option exercise date 01/25/2022 date of the previously exercised stock options tied to the proposed 5,000 shares

Key Terms

Form 144, 10b5-1, Previously Exercised Stock Options, Issuer

4 terms

Form 144 regulatory

"Form 144 notice reporting proposed sale of common stock (first sentence)"

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 regulatory

"10b5-1 Sales for SUSAN BOBULSKY recorded with dates and amounts"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Previously Exercised Stock Options financial

"Securities To Be Sold line lists 'Previously Exercised Stock Options' dated 01/25/2022"

Issuer regulatory

"Securities To Be Sold entry labels counterparty as 'Issuer' and payment method as 'Cash'"

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Available on EDGAR 06/25/2026 - 04:26 PM Accepted by SEC EDGAR 06/25/2026 - 04:26 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
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	5000	96700.00	160044392	06/25/2026	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	01/25/2022	Previously Exercised Stock Options	Issuer			5000	01/25/2022	Cash

* 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	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

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)