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Common Stock, Stock Options and Warrants (Tables)
9 Months Ended
Jun. 30, 2025
Common Stock, Stock Options and Warrants [Abstract]  
Schedule of Option Activity Under Our Stock Option Plans

A summary of option activity under our stock option plans (excluding the NoveCite and Citius Oncology Stock Plans) is presented below:

 

   Option
Shares
   Weighted-
Average
Exercise
Price
   Weighted-
Average
Remaining
Contractual
Term
   Aggregate
Intrinsic
Value
 
Outstanding at September 30, 2024   656,084   $36.41    7.26 years   $0.00 
Granted   185,000    9.50           
Exercised   
-
    
-
           
Forfeited or expired   (1,574)   242.80           
Outstanding at June 30, 2025   839,510   $30.09    7.15 years   $0.00 
Exercisable at June 30, 2025   512,009   $39.73    6.13 years   $0.00 

A summary of option activity under the Citius Oncology stock plans is presented below:

 

   Shares   Weighted-
Average
Exercise
Price
   Weighted-
Average
Remaining
Contractual
Term
   Aggregate
Intrinsic
Value
 
Outstanding at September 30, 2024   12,750,000   $2.15    8.78 years   $0.00 
Granted   5,750,000    1.07           
Forfeited   (333,333)   1.74           
Outstanding at June 30, 2025   18,166,667   $1.82    8.43 years   $46,051,667 
Exercisable at June 30, 2025   5,554,167   $1.99    8.13 years   $13,098,333 
Schedule of Exercise of Outstanding Warrants

The Company has reserved 17,623,006 shares of common stock for the exercise of outstanding warrants. The following table summarizes the warrants outstanding at June 30, 2025:

 

   Exercise
price
   Number   Expiration Dates
August 2018 Offering Investors  $28.75    156,863   August 14, 2025
August 2018 Offering Agent   39.84    7,576   August 8, 2025
September 2019 Offering Investors   19.25    111,732   September 27, 2025
September 2019 Offering Underwriter   27.97    7,774   September 27, 2025
February 2020 Exercise Agreement Agent   31.88    5,555   August 19, 2025
May 2020 Offering Investors   25.00    66,824   November 18, 2025
August 2020 Underwriter   32.81    8,079   August 10, 2025
January 2021 Offering Investors   30.78    123,648   July 27, 2026
January 2021 Offering Agent   40.44    14,065   July 27, 2026
February 2021 Offering Investors   42.50    823,211   February 19, 2026
February 2021 Offering Agent   47.03    100,256   February 19, 2026
May 2023 Offering Investors   37.50    500,000   May 8, 2028
May 2023 Offering Agent   37.50    35,000   May 3, 2028
April 2024 Offering Investors   18.75    857,143   October 30, 2029
April 2024 Offering Agent   21.875    60,000   April 25, 2029
November 2024 Offering Investors   6.25    480,000   November 18, 2029
November 2024 Offering Agent   7.8125    33,600   November 15, 2029
January 2025 Offering Investors   3.91    743,496   January 8, 2030
January 2025 Offering Agent   5.0438    52,045   January 7, 2030
April 2025 Offering Agent   1.4375    121,739   April 1, 2030
June 2025 Offering Investor   0.0001    3,130,000   No Expiration
June 2025 Offering Investor   1.000    9,840,000   June 11, 2027
June 2025 Offering Agent   1.525    344,400   June 11, 2027
         17,623,006    
Schedule of Common Stock Reserved for Future Issuances

A summary of common stock reserved for future issuances by the Company excluding all subsidiaries as of June 30, 2025 is as follows:

 

Stock plan options outstanding   839,510 
Stock plan shares available for future grants   118,000 
Warrants outstanding   17,623,006 
Total   18,580,516