Assembly Biosciences (NASDAQ: ASMB) shares Q3 2025 results

Rhea-AI Filing Summary

Assembly Biosciences, Inc. filed a current report to share that it has released its financial results for the quarter ended September 30, 2025. On November 10, 2025, the company issued a press release describing these quarterly results, which is included with the report as Exhibit 99.1. The company notes that this press release is being furnished under the results of operations and financial condition disclosure rules, rather than being formally filed under those provisions.

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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 10, 2025

Assembly Biosciences, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware	001-35005	20-8729264
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)
Two Tower Place, 7th Floor, South San Francisco, California		94080
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s Telephone Number, Including Area Code: (833) 509-4583

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 $0.001		ASMB		The Nasdaq Global Select Market

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 10, 2025, Assembly Biosciences, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2025. A copy of the press release is attached hereto as Exhibit 99.1.

The information furnished with this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any other filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number		Description
99.1		Press Release dated November 10, 2025.
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

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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.

		Assembly Biosciences, Inc.
Date: November 10, 2025		By:	/s/ John O. Gunderson
			John O. Gunderson
			VP, General Counsel and Corporate Secretary

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FAQ

What did Assembly Biosciences (ASMB) disclose in this 8-K?

Assembly Biosciences reported that it issued a press release announcing its financial results for the quarter ended September 30, 2025, which is attached as Exhibit 99.1.

Which period do the Assembly Biosciences (ASMB) results cover?

The financial results discussed in the press release cover the quarter ended September 30, 2025.

How are the Assembly Biosciences (ASMB) quarterly results provided?

The quarterly results are provided in a press release dated November 10, 2025, which is included as Exhibit 99.1 to the report.

Is the Assembly Biosciences (ASMB) press release considered filed with the SEC?

The company states that the information in Item 2.02, including Exhibit 99.1, is furnished and not deemed filed for purposes of Section 18 of the Exchange Act.

On which exchange is Assembly Biosciences (ASMB) common stock listed?

Assembly Biosciences common stock, par value $0.001, is listed on The Nasdaq Global Select Market under the symbol ASMB.

Which exhibits are attached to this Assembly Biosciences (ASMB) report?

The report includes Exhibit 99.1, the press release dated November 10, 2025, and Exhibit 104, the cover page interactive data file embedded within the Inline XBRL document.