---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-22-009250"
form_type: "8-K"
ticker: "ONCO"
cik: "0001782107"
company_name: "Onconetix, Inc."
filed_at: "2022-02-24T23:59:59+00:00"
generated_at: "2026-06-27T04:58:03.383026+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Blue Water Vaccines closes $20M IPO; appoints James Sapirstein to board

## Summary
- Closed IPO of 2,222,222 shares at $9.00/share; net proceeds ~$17.8M after underwriting costs.
- John Rice resigned from board effective Feb 23, 2022; James Sapirstein appointed to board same day.
- All outstanding series seed preferred shares converted into 5,626,365 common shares upon closing.
- Right of first refusal and co-sale agreement and voting agreement terminated in connection with IPO.
- Amended and restated certificate of incorporation and bylaws adopted effective Feb 23, 2022.

## SEC filing metadata
- accession: 0001213900-22-009250
- form_type: 8-K
- ticker: ONCO
- cik: 0001782107
- company_name: Onconetix, Inc.
- filed_at: 2022-02-24T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 1.02, 3.03, 5.03, 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1782107/000121390022009250/0001213900-22-009250-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1782107/000121390022009250/ea156152-8k_bluewater.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-22-009250
- JSON: https://secwatch.observer/filing/0001213900-22-009250.json
- Plain text: https://secwatch.observer/filing/0001213900-22-009250.txt

## Key facts
- Executive change
  James Sapirstein was appointed as member of the Board at Onconetix, Inc..
  - Action: appointed
  - Role: member of the Board
  source text: Effective as of February 23, 2022, the Board appointed James Sapirstein to serve as a member of the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1782107/000121390022009250/0001213900-22-009250-index.htm
- Executive change
  John Rice resigned as member of the Board of Directors at Onconetix, Inc..
  - Action: resigned
  - Role: member of the Board of Directors
  source text: Effective as of February 23, 2022, John Rice resigned as a member of the Board of Directors (the “Board”) of Blue Water Vaccines Inc.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1782107/000121390022009250/0001213900-22-009250-index.htm

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