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Citius Oncology grants Mayersohn 125,000 stock options

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Form Type
4

Rhea-AI Filing Summary

Citius Oncology, Inc. (CTOR) director Joel David Mayersohn received options covering 125,000 common shares on November 12, 2026, with an exercise price of $0.5223 per share. The award vests in full on November 12, 2027, subject to Continuous Service, and expires November 12, 2036. He reported 321,228 common shares, including 300,000 restricted stock units granted September 19, 2025, which vest in full on the third anniversary of that grant, subject to Continuous Service.

Insider Mayersohn Joel David
Role Director
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) F2 125,000 $0.00 $0.00
Holding Stock Option (Right to Buy) F3 -- -- --
Holding Common Stock F1 -- -- --
Holdings After Transaction: Stock Option (Right to Buy) — 375,000 options, with 250,000 underlying shares of Common Stock (Direct); Common Stock — 321,228 shares (Direct)
Footnotes (3)
  1. F1. Includes restricted stock units granted on September 19, 2025, in the amount of 300,000 shares. The shares underlying the restricted stock units will vest in full on the third 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. F2. These options were granted on November 12, 2026. The options vest in full on November 12, 2027, 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. F3. 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.
New option award 125,000 options Granted November 12, 2026; covers 125,000 common shares.
Exercise price $0.5223 per share New option award granted November 12, 2026.
Option expiration November 12, 2036 New option award.
Common shares reported 321,228 shares Includes 300,000 restricted stock units.
Restricted stock units 300,000 shares Granted September 19, 2025; vest in full on the third anniversary, subject to Continuous Service.
Existing options 250,000 underlying common shares Direct option position reported; options vest in thirds on the one-, two- and three-year anniversaries of December 12, 2024.
Exercise price $1.07 per share Existing options expiring December 12, 2034.
Option expiration December 12, 2034 Existing options covering 250,000 common shares.
restricted stock units financial
"shares underlying the restricted stock units will vest in full"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
Continuous Service technical
"subject to the Reporting Person's Continuous Service"
exercise price financial
"conversion or exercise price of $0.5223"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What options did CTOR director Joel David Mayersohn receive?

Mayersohn received options covering 125,000 common shares on November 12, 2026, at an exercise price of $0.5223 per share. They vest in full on November 12, 2027, subject to Continuous Service, and expire November 12, 2036.

When do Joel David Mayersohn's existing CTOR options vest?

The existing options covering 250,000 common shares vest one-third on each of the one-, two- and three-year anniversaries of December 12, 2024, subject to Continuous Service. They have a $1.07 exercise price and expire December 12, 2034.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
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 for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Mayersohn Joel David

(Last)(First)(Middle)
C/O CITIUS ONCOLOGY, INC.
11 COMMERCE DRIVE, 1ST FLOOR

(Street)
CRANFORD NEW JERSEY 07016

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
CITIUS ONCOLOGY, INC. [ CTOR ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
11/12/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock321,228(1)D
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 Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$0.522311/12/2026A125,000 (2)11/12/2036Common Stock125,000$0125,000D
Stock Option (Right to Buy)$1.07 (3)12/12/2034Common Stock250,000250,000D
Explanation of Responses:
1. Includes restricted stock units granted on September 19, 2025, in the amount of 300,000 shares. The shares underlying the restricted stock units will vest in full on the third 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 November 12, 2026. The options vest in full on November 12, 2027, 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 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.
/s/Alexander M. Donaldson, by Power of Attorney11/13/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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