1、As filed with the Securities and Exchange Commission on July 14,2025Registration Statement No.333-288656 UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington,D.C.20549 FORM S-1/AAmendment No.1 REGISTRATION STATEMENT UNDERTHE SECURITIES ACT OF 1933 CITIUS ONCOLOGY,INC.(Exact name of registrant a

2、s specified in its charter)Delaware(State or other jurisdiction of incorporation or organization)8731(Primary Standard Industrial Classification Code Number)99-4362660(I.R.S.EmployerIdentification Number)11 Commerce Drive,First FloorCranford,New Jersey 07016Telephone:(908)967-6677(Address,including

3、zip code,and telephone number,including area code,of registrants principal executive offices)Leonard MazurChief Executive Officer11 Commerce Drive,First FloorCranford,New Jersey 07016Telephone:(908)967-6677(Name,address,including zip code,and telephone number,including area code,of agent for service

4、)Copies to:Lorna A.Knick,Esq.Alexander M.Donaldson,Esq.Christopher P.Agoranos,Esq.Wyrick Robbins Yates&Ponton LLP4101 Lake Boone Trail,Suite 300Raleigh,North Carolina 27607Telephone:(919)781-4000 Mark E.Crone,Esq.Cassi Olson,Esq.The Crone Law Group P.C.420 Lexington Avenue,Suite 2446New York,NY 1017

5、0Telephone:+1 646-861-7891 Approximate date of commencement of proposed sale to the public:As soon as practicable after the effective date of thisregistration statement.If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 unde

6、rthe Securities Act of 1933 check the following box:If this Form is filed to register additional securities for an offering pursuant to Rule 462(b)under the Securities Act,please checkthe following box and list the Securities Act registration statement number of the earlier effective registration st