Onconetix advances $500,000 to Realbotix under existing loan agreement

On Thursday, Onconetix, Inc. (NASDAQ:ONCO) advanced an additional $500,000 to Realbotix, LLC under a previously disclosed Grid Promissory Note, according to a statement in a Securities and Exchange Commission filing.

The note, dated September 11, 2026, allows Onconetix to lend up to $5 million to Realbotix. The company initially advanced $2.5 million on September 11. With the latest $500,000 advance, the outstanding principal under the note now totals $3 million. The lending activity comes as Onconetix trades at $0.41 per share, giving it a market capitalization of just $1.61 million.

Onconetix confirmed that the terms of the promissory note remain unchanged. The details of the agreement were first reported in the company’s Form 8-K filed on September 14, 2026.

The information is based on a press release statement included in the SEC filing.