Onconetix, Inc.
ONCO- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001782107
No open-market purchases or sales by Onconetix, Inc. insiders were filed in the last 90 days; 6 institutions reported holding it in 13F filings for Q2 2026, worth $73.9K in total; no superinvestor holds it.
Holders of 5% or more of ONCO
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Onconetix, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Altos Venture AG | 13D/A | 35.80%273.2K shares | – | Dec 28, 20233 filings | Jul 16, 2025 | SEC |
| Scablis AG | 13G | 7.00%581.9K shares | New | Sep 27, 20241 filing | Sep 27, 2024 | SEC |
| Keystone Capital Partners, LLC | 13G | 6.10%223.7K shares | New | Jul 27, 20261 filing | Jul 27, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
25 Schedule 13D and 13G filings on Onconetix, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jul 27, 20261:24 PM ET | Keystone Capital Partners, LLCand 2 others | 13G | 6.10%223.7K shares | New | Jul 20, 2026 | SEC |
| Jul 16, 20254:03 PM ET | Altos Venture AG | 13D/A | 35.80%273.2K shares | – | Jul 14, 2025 | SEC |
| Feb 14, 20254:20 PM ET | Bruhlmann Christian | 13D/A | 4.20%611.4K shares | –Below 5% | Jan 2, 2025 | SEC |
| Feb 14, 20254:20 PM ET | Schiess Ralph | 13D/A | 4.63%673.4K shares | –Below 5% | Jan 2, 2025 | SEC |
| Feb 13, 20252:50 PM ET | American Financial Group Inc | 13G/A | 0.00%36.0K shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 7, 20251:28 PM ET | Zurcher Kantonalbank (Zurich Cantonalbank) | 13G/A | 2.50%207.7K shares | –Below 5% | Dec 24, 2024 | SEC |
| Nov 14, 2024 | Zurcher Kantonalbank (Zurich Cantonalbank) | 13GOld format | – | New | – | SEC |
| Oct 1, 2024 | Bruhlmann Christian | 13DOld format | – | New | – | SEC |
| Oct 1, 2024 | Schiess Ralph | 13DOld format | – | New | – | SEC |
| Sep 27, 20243:54 PM ET | Scablis AG | 13G | 7.00%581.9K shares | New | Sep 24, 2024 | SEC |
| Sep 26, 2024 | Altos Venture AG | 13DOld format | – | – | – | SEC |
| Sep 26, 2024 | New Horizon Health Ltd | 13GOld format | – | New | – | SEC |
| Jun 10, 2024 | Hernandez Joseph | 13G/AOld format | – | – | – | SEC |
| Jan 26, 2024 | American Financial Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 2, 2024 | Sabby Management, LLC | 13G/AOld format | – | – | – | SEC |
| Dec 28, 2023 | Altos Venture AG | 13GOld format | – | New | – | SEC |
| Jun 29, 2023 | Cincinnati Cornerstone Investors BWV I, LLC | 13DOld format | – | – | – | SEC |
| Apr 13, 2023 | Cincinnati Cornerstone Investors BWV I, LLC | 13DOld format | – | – | – | SEC |
| Feb 14, 2023 | Hernandez Joseph | 13GOld format | – | New | – | SEC |
| Jan 31, 2023 | American Financial Group Inc | 13GOld format | – | New | – | SEC |
| Jan 4, 2023 | Sabby Management, LLC | 13GOld format | – | New | – | SEC |
| Nov 21, 2022 | Cincinnati Cornerstone Investors BWV I, LLC | 13DOld format | – | – | – | SEC |
| Aug 29, 2022 | Cincinnati Cornerstone Investors BWV I, LLC | 13DOld format | – | – | – | SEC |
| Mar 3, 2022 | Cincytech Fund IV, LLC | 13DOld format | – | New | – | SEC |
| Mar 3, 2022 | Cincinnati Cornerstone Investors BWV I, LLC | 13DOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Onconetix, Inc. shares.
No Form 144 notices for Onconetix, Inc. are on file.