[8-K] Apogee Therapeutics, Inc. Reports Material Event

Rhea-AI Filing Summary

Apogee Therapeutics (APGE) furnished an 8‑K noting two updates. The company issued an earnings press release covering the quarter ended September 30, 2025, and separately announced positive interim Phase 1 results from a healthy volunteer trial of APG333.

The earnings release is furnished as Exhibit 99.1 and the clinical data release as Exhibit 99.2. Both exhibits are furnished, not filed, under the Exchange Act.

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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

Apogee Therapeutics, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware			001-41740	93-4958665
(State or Other Jurisdiction of Incorporation)			(Commission File Number)	(IRS Employer Identification No.)
221 Crescent St., Bldg 17, Suite 102b
Waltham, Massachusetts				02453
(Address of Principal Executive Offices)				(Zip Code)

Registrant’s Telephone Number, Including Area Code: (650) 394-5230

(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 $0.00001 per share		APGE		The Nasdaq Global 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, Apogee Therapeutics, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2025 (the “Earnings Press Release”).

A copy of the Earnings Press Release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (the “Form 8-K”) and is incorporated by reference herein. The exhibit furnished under Item 2.02 of this Form 8-K shall not be deemed to be “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 in any filing under the Exchange Act or the Securities Act of 1933, as amended (the “Securities Act”), regardless of any general incorporation language in such filing.

Item 7.01 Regulation FD Disclosure.

On November 10, 2025, the Company issued a press release announcing positive interim Phase 1 results from the healthy volunteer trial of APG333 (the “Data Press Release”).

A copy of the Data Press Release is furnished as Exhibit 99.2 to this Form 8-K and is incorporated by reference herein. The exhibit furnished under Item 7.01 of this Form 8-K shall not be deemed to be “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Exchange Act or the Securities Act, regardless of any general incorporation language in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits. The following exhibits are being furnished herewith:

EXHIBIT INDEX

Exhibit No.		Description
99.1		Earnings Press Release, dated November 10, 2025
99.2		Data Press Release, dated November 10, 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 hereunto duly authorized.

			Apogee Therapeutics, Inc.
Date:	November 10, 2025	By:	/s/ Michael Henderson, M.D.
			Michael Henderson, M.D. Chief Executive Officer

FAQ

What did Apogee Therapeutics (APGE) disclose in this 8‑K?

The company furnished press releases for quarterly financial results and positive interim Phase 1 data from a healthy volunteer trial of APG333.

Which period do the APGE financial results cover?

The earnings press release covers the quarter ended September 30, 2025.

What clinical update did APGE provide?

APGE announced positive interim Phase 1 results from a healthy volunteer trial of APG333.

Where can investors find the detailed releases?

The earnings release is Exhibit 99.1 and the data release is Exhibit 99.2 to the 8‑K.

Are the exhibits filed or furnished?

Both exhibits are furnished and are not deemed filed under Section 18 of the Exchange Act.

What is APGE’s listing information?

Common stock trades on The Nasdaq Global Market under the symbol APGE.