Company: IMNN
Filing Date: 2025-12-31
Form Type: 424B5
Source: 0001493152-25-029712
Chunk: 0

Company: Imunon, Inc.
Filing Date: 2025-12-31
Form: 424B5
Chunk 0
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Filed Pursuant to Rule 424(b)(5)

Registration No. 333-279425

PROSPECTUS SUPPLEMENT
(To Prospectus dated May 22, 2024)

<div align='center'>Imunon, Inc.

330,000 Shares of Common Stock

Pre-funded Warrants to Purchase up to 1,609,114 Shares of Common Stock

Warrants to Purchase up to 1,939,114 Shares of Common Stock</div>

We are offering directly to a single healthcare-focused institutional investor (the “Purchaser”) 330,000 shares (the “Shares”) of our common stock, par value $0.01 per share, or, in lieu of shares of our common stock to the extent the Purchaser so chooses, pre-funded warrants (the “Pre-funded Warrants”) to purchase 1,609,114 shares of our common stock, in this offering, and warrants (the “Warrants”) to purchase up to 1,939,114 shares of our common stock (and the shares of common stock issuable from time to time upon exercise of such Pre-funded Warrants and Warrants). The Shares, the Pre-funded Warrants, and the Warrants are being offered pursuant to a securities purchase agreement, dated as of December 29, 2025 (the “Purchase Agreement”), by and among us and the Purchaser. The Pre-funded Warrants have an exercise price of $0.0001 per share and will not expire. The Warrants have an exercise price of $3.482 per share and will be exercisable immediately for a term of five years following the date of issuance.The combined offering price for each Share and accompanying Warrant is $3.61, and the combined offering price for each Pre-funded Warrant and accompanying Warrant is $3.6099. Each of the Shares and Warrants, and the Pre-funded Warrants and Warrants can only be purchased together in this offering but will be issued separately and will be immediately separable upon issuance. We are also offering the shares of common stock that are issuable from time to time upon exercise of the Pre-funded Warrants and the Warrants.

Our common stock is listed on the Nasdaq Capital Market under the symbol “IMNN”. On December 29, 2025, the last reported sale price of our common stock on the Nasdaq Capital Market was $3.63 per share. There is no established public trading market for the Pre-funded Warrants or the Warrants,