Cellectar Biosciences Announces Closing of $6.9 Million Underwritten Public Offering, including Full Exercise of Over-Allotment Option

On July 2, 2025 Cellectar Biosciences, Inc. (Nasdaq: CLRB) (the "Company"), a late-stage clinical biopharmaceutical company focused on the discovery and development of drugs for the treatment of cancer, reported the closing of its previously announced underwritten public offering for gross proceeds of approximately $6.9 million prior to deducting underwriting commissions and offering expenses (Press release, Cellectar Biosciences, JUL 2, 2025, View Source [SID1234654213]). The offering includes participation from healthcare dedicated funds and executive management.

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The offering is composed of (i) 1,045,000 Class A Units (which includes 180,000 Class A Units issued pursuant to the Underwriter’s exercise of the over-allotment option in full) with each Class A Unit consisting of (a) one share of common stock and (b) one common warrant to purchase one share of common stock (the "Common Warrants"), and (ii) 335,000 Class B Units with each Class B Unit consisting of (a) one pre-funded common stock purchase warrant to purchase one share of common stock ("Pre-funded Warrants") and (b) one Common Warrant. The price per Class A Unit is $5.00 and the price per Class B Unit is $4.99999 (collectively, the "Offering"). The Common Warrants have an exercise price of $5.25 per share, are exercisable upon issuance, and have a term expiring five years from issuance.

Ladenburg Thalmann & Co. Inc. acted as sole bookrunning manager in connection with this Offering.

The gross proceeds from the Offering to the Company, before deducting underwriting discounts and commissions and other Offering expenses and excluding any proceeds that may be received upon the exercise of the Common Warrants were approximately $6.9 million. The Company currently intends to use the net proceeds of the Offering for general corporate purposes, including working capital and operating expenses, and to initiate a Phase 1b clinical study of our compound CLR 121125 (CLR 125) in triple-negative breast cancer.

The securities described above were sold pursuant to a registration statement on Form S-1 (File No. 333-288333), which was declared effective by the United States Securities and Exchange Commission ("SEC") on July 1, 2025. A prospectus relating to the securities was filed with the SEC on July 1, 2025 and is available on the SEC’s website at View Source Electronic copies of the final prospectus, may also be obtained by contacting Ladenburg Thalmann & Co. Inc., Prospectus Department, 640 Fifth Avenue, 4th Floor, New York, New York 10019 or by email at [email protected].

This press release does not constitute an offer to sell or the solicitation of an offer to buy, nor will there be any sales of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such jurisdiction.