ADPT furnishes Q3 2025 results press release via 8-K Exhibit 99.1

Rhea-AI Filing Summary

Adaptive Biotechnologies (ADPT) furnished an 8-K announcing it issued a press release with financial results for the quarter ended September 30, 2025. The press release is attached as Exhibit 99.1 and incorporated by reference as stated therein.

The company notes the information provided under Item 2.02 and Exhibit 99.1 is furnished and shall not be deemed “filed” under the Exchange Act, nor incorporated into Securities Act or Exchange Act filings except by specific reference.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 5, 2025

ADAPTIVE BIOTECHNOLOGIES CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington	001-38957	27-0907024
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)
1165 Eastlake Avenue East Seattle, Washington		98109
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 659-0067

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common stock, par value $0.0001 per share		ADPT		The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On November 5, 2025, Adaptive Biotechnologies Corporation (the “Company”) issued a press release regarding the Company’s financial results for the quarter ended September 30, 2025. A copy of the press release is attached as Exhibit 99.1 and incorporated herein by reference.

The information in this Item 2.02 and the press release attached as Exhibit 99.1 hereto shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number		Description
99.1		Press Release dated November 5, 2025
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		Adaptive Biotechnologies Corporation
Date: November 5, 2025		By:	/s/ Kyle Piskel
			Kyle Piskel
			Chief Financial Officer

FAQ

What did ADPT announce in this 8-K?

The company furnished a press release detailing financial results for the quarter ended September 30, 2025, attached as Exhibit 99.1.

Which period do the results cover for ADPT?

The results cover the quarter ended September 30, 2025.

Is the information in the 8-K considered ‘filed’?

No. The Item 2.02 information and Exhibit 99.1 are furnished, not deemed “filed,” except if specifically incorporated by reference.

What is the exhibit included with this 8-K?

Exhibit 99.1: Press Release dated November 5, 2025. The cover page Inline XBRL is listed as Exhibit 104.

What is Adaptive Biotechnologies’ trading symbol and exchange?

The common stock trades under ADPT on The NASDAQ Stock Market LLC.

When was the press release dated?

The press release is dated November 5, 2025.