---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-074952"
form_type: "8-K"
ticker: "ONCO"
cik: "0001782107"
company_name: "Onconetix, Inc."
filed_at: "2025-08-12T23:59:59+00:00"
generated_at: "2026-05-17T14:45:46.281394+00:00"
event_type: "debt"
sentiment: "negative"
materiality_score: 0.68
calibrated_materiality_score: 0.68
confidence: "high"
source: SEC EDGAR
---

# Onconetix issues $118K Keystone note, extends Veru note to Aug 14, 2025; director resigns

## Summary
- Issued $117,647 promissory note to Keystone Capital with $17,647 OID, due March 6, 2026 or upon ELOC proceeds.
- Amended Veru September note: principal increased $100K to $5.1M, maturity extended to August 14, 2025.
- Director Ajit Singh resigned effective August 10, 2025.

## SEC filing metadata
- accession: 0001213900-25-074952
- form_type: 8-K
- ticker: ONCO
- cik: 0001782107
- company_name: Onconetix, Inc.
- filed_at: 2025-08-12T23:59:59+00:00
- event_type: debt
- sentiment: negative
- materiality_score: 0.68
- calibrated_materiality_score: 0.68
- confidence: high
- sec_items: 1.01, 2.03, 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1782107/000121390025074952/0001213900-25-074952-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1782107/000121390025074952/ea0252759-8k_onconetix.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-074952
- JSON: https://secwatch.observer/filing/0001213900-25-074952.json
- Plain text: https://secwatch.observer/filing/0001213900-25-074952.txt

## Key facts
- Debt Financings
  Onconetix, Inc. incurred loan of aggregate principal amount of $117,647.06 with Keystone Capital Partners, LLC at does not initially bear interest...any amounts due which are not paid when due s maturing due and payable upon the earlier of (i) the Company's receipt of sufficient proceeds from its equity line of credit with Keystone and (ii) March 6, 2026.
  - Instrument: loan
  - Principal: aggregate principal amount of $117,647.06
  - Counterparty: Keystone Capital Partners, LLC
  - Rate: does not initially bear interest...any amounts due which are not paid when due s
  - Maturity: due and payable upon the earlier of (i) the Company's receipt of sufficient proceeds from its equity line of credit with Keystone and (ii) March 6, 2026
  - Event: incurrence
  source text: On August 6, 2025, Onconetix, Inc. (the “ Company ”) issued a promissory note (the “ Keystone Note” ) to Keystone Capital Partners, LLC (“ Keystone ”) with original issue discount of $17,647.06, in an aggregate principal amount of $117,647.06.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1782107/000121390025074952/0001213900-25-074952-index.htm
- Debt Financings
  Onconetix, Inc. amended debt of principal amount owed to Veru was increased by $100,000 to an aggregate principal amount of $5.1 million with Veru Inc. at non-interest bearing maturing maturity date was amended to August 14, 2025.
  - Principal: principal amount owed to Veru was increased by $100,000 to an aggregate principal amount of $5.1 million
  - Counterparty: Veru Inc.
  - Rate: non-interest bearing
  - Maturity: maturity date was amended to August 14, 2025
  - Event: amendment
  source text: the September Veru Note (as amended and restated, the “ A&R September Veru Note ”). Pursuant to the A&R September Veru Note, the principal amount owed to Veru was increased by $100,000 to an aggregate principal amount of $5.1 million, and the maturity date was amended to August 14, 2025. All other terms of the September Veru Note remained the same. The above
  evidence_url: https://www.sec.gov/Archives/edgar/data/1782107/000121390025074952/0001213900-25-074952-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.