Description of Business	6 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business Intensity Therapeutics, Inc. (the “Company”) is a biotechnology company whose treatment approach addresses both the regional and systemic nature of a patient’s cancer. The Company’s DfuseRxSM technology platform has identified a lead drug, INT230-6. The Company is based in Connecticut and was incorporated in Delaware in December 2012. On February 19, 2026, the Company effected a 1-for-25 reverse stock split (the “Reverse Stock Split”). Every 25 shares of the Company’s issued and outstanding shares of the Company’s common stock were automatically converted into one share of the Company’s common stock. All fractional shares created by the Reverse Stock Split were paid in cash. The Reverse Stock Split has no impact on the par value per share of the Company’s common stock which remains at $0.0001. All holders of options and warrants had the exercise price multiplied by 25 and the number of shares issuable upon exercise divided by 25. All current and prior period amounts related to shares, share prices and loss per share, presented in the Company’s financial statements and the accompanying notes have been restated for the Reverse Stock Split.

Description of Business

6 Months Ended

Jun. 30, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Intensity Therapeutics, Inc. (the “Company”) is a biotechnology company whose treatment approach addresses both the regional and systemic nature of a patient’s cancer. The Company’s DfuseRxSM technology platform has identified a lead drug, INT230-6. The Company is based in Connecticut and was incorporated in Delaware in December 2012.

On February 19, 2026, the Company effected a 1-for-25 reverse stock split (the “Reverse Stock Split”). Every 25 shares of the Company’s issued and outstanding shares of the Company’s common stock were automatically converted into one share of the Company’s common stock. All fractional shares created by the Reverse Stock Split were paid in cash. The Reverse Stock Split has no impact on the par value per share of the Company’s common stock which remains at $0.0001. All holders of options and warrants had the exercise price multiplied by 25 and the number of shares issuable upon exercise divided by 25. All current and prior period amounts related to shares, share prices and loss per share, presented in the Company’s financial statements and the accompanying notes have been restated for the Reverse Stock Split.