How many institutions held ONCO - Onconetix, Inc. - Common stock, par value $0.00001 per share in Q2 2026?

6 institutional investors reported ONCO - Onconetix, Inc. - Common stock, par value $0.00001 per share for Q2 2026. Use the holders table for investor-level position and value details.

Onconetix, Inc. - Common stock, par value $0.00001 per share (ONCO)

Q: What does CUSIP 68237Q401 represent in this 13F holders report?

CUSIP 68237Q401 is the security identifier for ONCO - Onconetix, Inc. - Common stock, par value $0.00001 per share used to aggregate holder disclosures.

CUSIP: 68237Q401

Q2 2026 13F Holders as of 30 Jun 2026

Security type / class: Equity / Common stock, par value $0.00001 per share
Total 13F shares: 65,464
Total 13F value: $73,895
Share change: +65,464
SEC-reported price per share: $1.13
Number of holders: 6
Value change: +$73,895
Number of buys: 6
Shares outstanding: 3,667,492

Security key

68237Q401

Report period

Q2 2026

Institutions

Top holders

ONCO full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 Onconetix, Inc. SEC filings Onconetix, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 68237Q401

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026 Q2 2026

Ownership snapshot

Top reported holders of ONCO - Onconetix, Inc. - Common stock, par value $0.00001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Altos Venture AG

Disclosed value leader

Joseph Hernandez

Comparable rows

4/15

Latest evidence

14 Apr 2026

13D/G 3/4/5 13F Lead comparable stake: 36% 11 rows are not safely comparable across share classes. 13D/G row: Altos Venture AG Showing 1-6 of 15 holder rows.

Quick read

Altos Venture AG leads the comparable SEC ownership view at 36%.

4 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Altos Venture AG's linked filing trail.

Comparable ownership Top 4

Altos Venture AG 36%

Ralph Schiess 4.6%

Christian Bruhlmann 4.2%

Zurcher Kantonalbank (Zurich Cant... 2.5%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Altos Venture AG	13D/G 3/4/5 10%+ Owner 13D/G 3/4/5	36% Reported 13D/G · 14 Jul 2025	$1,307,597 273,230 shares	$0	14 Jul 2025
Ralph Schiess	3/4/5 13D/G Interim CEO, CSO 3/4/5 13D/G	4.6% Reported 13D/G · 02 Jan 2025	$1,106,888 673,365 shares	—	20 Dec 2024
Christian Bruhlmann	3/4/5 13D/G Chief Strategy Officer 3/4/5 13D/G	4.2% Reported 13D/G · 02 Jan 2025	$968,521 611,372 shares	—	20 Dec 2024
Zurcher Kantonalbank (Zurich Cantonalbank)	13D/G 13D/G	2.5% Reported 13D/G · 24 Dec 2024	$16,615 207,691 shares	$0	24 Dec 2024
Joseph Hernandez	3/4/5 CEO, Director, 10%+ Owner 3/4/5	— denominator unverified	$11,490,960 2,800,351 shares	—	09 May 2023
Cincinnati Cornerstone Investors BWV I, LLC	3/4/5 10%+ Owner 3/4/5	— denominator unverified	$4,764,872 1,161,201 shares	—	10 Apr 2023

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

65,464

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2026 vs Q2 2026 Across Filers

Q2 2026 holders

Holder diff

Investor	Q2 2026 Shares	Q2 2026 Shares	Share Diff	Share Chg %	Q2 2026 value	Q2 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend