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) August 18, 2025

Citius Oncology, Inc.

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation)

001-41534		99-4362660
(Commission File Number)		(IRS Employer Identification No.)

11 Commerce Drive, 1st Floor, Cranford, NJ		07016
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code (908) 967-6677

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		CTOR		The Nasdaq Capital 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 8.01 Other Events.

Citius Oncology, Inc. today filed a prospectus supplement to its registration statement on Form S-1 that was declared effective on July 15, 2025, pursuant to which it sold common stock and warrants in a public offering on July 17, 2025. The prospectus supplement is necessary to keep the registration statement current with Citius Oncology’s recently filed Quarterly Report on Form 10-Q because Citius Oncology is not yet eligible to incorporate by reference into the Form S-1 registration statement.

SIGNATURE

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.

	CITIUS ONCOLOGY, INC.

Date: August 18, 2025	/s/ Leonard Mazur
	Leonard Mazur
	Chairman and Chief Executive Officer

Citius Oncology Inc. filed SEC Form 8-K: Other Events