Onconetix, Inc. - Common Stock, par value $0.00001 per share (ONCO)
CUSIP: 68237Q203
Q4 2025 13F Holders as of 31 Dec 2025
- Type / Class
- Equity / Common Stock, par value $0.00001 per share
- Shares outstanding
- 763,212
- Total 13F shares
- 61,061
- Share change
- -36,596
- Total reported value
- $95,255
- Price per share
- $1.56
- Number of holders
- 7
- Value change
- -$101,471
- Number of buys
- 3
- Number of sells
- 3
Quarterly Holders Quick Answers
What is CUSIP 68237Q203?
CUSIP 68237Q203 identifies ONCO - Onconetix, Inc. - Common Stock, par value $0.00001 per share in SEC institutional holdings data.
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Recent filing periods for CUSIP 68237Q203:
Top shareholders 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. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Joseph Hernandez |
3/4/5
|
CEO, Director, 10%+ Owner |
—
class O/S missing
|
2,800,351
|
$11,490,960 | — | 09 May 2023 | |
| Cincinnati Cornerstone Investors BWV I, LLC |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
1,161,201
|
$4,764,872 | — | 10 Apr 2023 | |
| Altos Venture AG |
13D/G
3/4/5
|
10%+ Owner |
36%
|
273,230
|
$1,307,597 | $0 | 14 Jul 2025 | |
| Ralph Schiess |
3/4/5
13D/G
|
Interim CEO, CSO |
4.6%
from 13D/G
|
673,365
|
$1,106,888 | — | 20 Dec 2024 | |
| Christian Bruhlmann |
3/4/5
13D/G
|
Chief Strategy Officer |
4.2%
from 13D/G
|
611,372
|
$968,521 | — | 20 Dec 2024 | |
| Erin Henderson |
3/4/5
|
Chief Business Officer |
—
class O/S missing
|
174,752
|
$717,077 | — | 09 May 2023 | |
| Jon Garfield |
3/4/5
|
Chief Financial Officer |
—
class O/S missing
|
100,000
|
$410,340 | — | 09 May 2023 | |
| DRW Securities, LLC |
13F
|
Company |
8.1%
|
61,784
|
$192,148 | — | 30 Sep 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
2%
|
15,633
|
$48,619 | — | 30 Sep 2025 | |
| Pacific Capital Wealth Advisors, Inc. |
13F
|
Company |
1.7%
|
13,000
|
$40,430 | — | 30 Sep 2025 | |
| Vuk Jeremic |
3/4/5
|
Director |
—
class O/S missing
|
6,360
|
$26,098 | — | 31 May 2023 | |
| James Sapirstein Power |
3/4/5
|
Director |
—
class O/S missing
|
3,477
|
$26,098 | — | 26 Sep 2024 | |
| UBS Group AG |
13F
|
Company |
0.72%
|
5,506
|
$17,124 | — | 30 Sep 2025 | |
| Zurcher Kantonalbank (Zurich Cantonalbank) |
13D/G
|
— |
2.5%
|
207,691
|
$16,615 | $0 | 24 Dec 2024 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.21%
|
1,568
|
$4,876 | — | 30 Sep 2025 | |
| AMERICAN FINANCIAL GROUP INC |
13D/G
|
— |
—
class O/S missing
|
36,023
|
$2,882 | $0 | 31 Dec 2024 | |
| Simon Tarsh |
3/4/5
|
Director |
0.09%
|
658
|
$2,112 | — | 15 Aug 2025 | |
| Timothy R. Ramdeen |
3/4/5
|
Director |
0.09%
|
658
|
$2,112 | — | 15 Aug 2025 | |
| Thomas Meier |
3/4/5
|
Director |
0.09%
|
657
|
$2,108 | — | 15 Aug 2025 | |
| Andrew John Oakley |
3/4/5
|
Director |
0.08%
|
638
|
$2,047 | — | 15 Aug 2025 | |
| SBI Securities Co., Ltd. |
13F
|
Company |
0.02%
|
154
|
$479 | — | 30 Sep 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0%
|
11
|
$34 | — | 30 Sep 2025 | |
| DANSKE BANK A/S |
13F
|
Company |
0%
|
1
|
$3 | — | 30 Sep 2025 | |
| Kimberly M. Murphy |
3/4/5
|
Director |
—
class O/S missing
|
50,575
|
— | — | 04 May 2022 | |
| Allan Shaw |
3/4/5
|
Director |
—
class O/S missing
|
16,284
|
— | — | 19 Aug 2022 | |
| Michael Venerable |
3/4/5
|
Director |
—
class O/S missing
|
4,655
|
— | — | 04 May 2022 | |
| Ajit Singh |
3/4/5
|
Director |
—
class O/S missing
|
3,396
|
— | — | 26 Sep 2024 |
Institutional Holders of Onconetix, Inc. - Common Stock, par value $0.00001 per share (ONCO) as of Q4 2025
As of 31 Dec 2025,
Onconetix, Inc. - Common Stock, par value $0.00001 per share (ONCO) was held by
7 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
61,061 shares.
The largest 7 holders included
DRW Securities, LLC, XTX Topco Ltd, UBS Group AG, Tower Research Capital LLC (TRC), SBI Securities Co., Ltd., BANK OF AMERICA CORP /DE/, and DANSKE BANK A/S.
This page lists
7
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
8
Q4 2025 holders
7
Holder diff
-1
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 Value $ | Q4 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.