Latest Period
Q1 2026
Security Snapshot
Onconetix, Inc. - Common Stock, par value $0.00001 per share (ONCO) Institutional Ownership
CUSIP: 68237Q203
13F Institutional Holders and Ownership History from Q2 2025 to Q1 2026
Institutions Reporting
0
Shares (Excl. Options)
0
Price
$0.60
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- Security type / class
- Equity / Common Stock, par value $0.00001 per share
- Symbol
- ONCO on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 0
- Total 13F value
- $0
- Share change
- -61,061
- Value change
- -$95,255
- Number of holders
- 0
- Shares outstanding
- 763,212
- SEC-reported price per share
- $0.60
Latest holder snapshot
4 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ONCO - Onconetix, Inc. - Common Stock, par value $0.00001 per share is tracked under CUSIP 68237Q203.
- 0 institutions reported positions in Q1 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 7 to 0 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $95,255 to $0.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 0 institutions filings for Q1 2026.
Security key
68237Q203
Latest holder period
Q1 2026
13F holders
0
13D/G owners
1
CIK / CUSIP context first
Open Q1 2026 holders
ONCO full holder history
Onconetix, Inc. SEC filings
Onconetix, Inc. company facts
Onconetix, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 68237Q203:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
ONCO
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Altos Venture AG | 36% | $1,307,597 | 273,230 | Altos Venture AG | 14 Jul 2025 |
As of 31 Mar 2026, 0 institutional investors reported holding 0 shares of Onconetix, Inc. - Common Stock, par value $0.00001 per share (ONCO). This represents 0% of the company’s total 763,212 outstanding shares.
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
4
Latest
Q1 2026
Rows shown
1-4 of 4