Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Mazur Leonard L 2. Issuer Name and Ticker or Trading Symbol CITIUS ONCOLOGY, INC. [CTOR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Executive Officer (Last) (First) (Middle) C/O CITIUS ONCOLOGY, INC., 11 COMMERCE DRIVE, 1ST FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 11/09/2026 (Street) CRANFORD, NJ 07016 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 1,700,000 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option (Right to Buy)

$0.5495

11/09/2026

A

1,000,000

(1)

11/09/2036

Common Stock

1,000,000

$ 0

1,000,000

D

Stock Option (Right to Buy)

$1.07

(2)

12/12/2034

Common Stock

800,000

800,000

D

Stock Option (Right to Buy)

$2.15

(3)

07/05/2033

Common Stock

3,700,000

3,700,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Mazur Leonard L C/O CITIUS ONCOLOGY, INC. 11 COMMERCE DRIVE, 1ST FLOOR CRANFORD, NJ 07016	X		Chief Executive Officer

Signatures

/s/ Alexander M. Donaldson, by Power of Attorney		11/12/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	These options were granted on November 9, 2026. The options will vest 1/3 on each of the one-year, two-year and three-year anniversary of the grant date, subject to the Reporting Person's Continuous Service to Citius Oncology, Inc. (the "Company") or a Related Entity (as defined in the award agreement) as of the applicable vesting date.
(2)	These options were granted on December 12, 2024. The options will vest 1/3 on each of the one-year, two-year and three-year anniversary of the grant date, subject to the Reporting Person's Continuous Service to the Company or a Related Entity (as defined in the award agreement) as of the applicable vesting date.
(3)	These options vested over three years, beginning July 5, 2023, with 1/36th every month for the first year, and the 1/3 each on the second and third anniversary of July 5, 2023, subject to the Reporting Person's Continuous Service to the Company or a Related Entity (as defined in the award agreement) as of the applicable vesting date.

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