Nasdaq · CIK 0001782107
ONCO Onconetix, Inc.
Insider trading from SEC Form 4. Last filing Apr 22, 2026. Close $0.59 on Oct 12, 2026, 0% from the 52-week low and -100% from the high.
In brief
Onconetix, Inc. (ONCO) has 9 SEC Form 4 filings on file from 7 insiders, the latest filed on Apr 22, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.
4 open-market trades have been scored at ONCO. The newest: Hrt Financial LP (10% owner) sold $34k of stock on Apr 21, 2026, filed Apr 22, 2026, scored 38 (weak). The largest of the 4 shown: Hrt Financial LP (10% owner) bought $128k on Apr 14, 2026, scored 23 (weak).
Last 90 days
Price and insider trades, last year
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at Onconetix, Inc., scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 38Weak | Hrt Financial LP owner sell | $34k 49,710 shares | -60% | - | |
| 18Weak | Hrt Financial LP owner buy | $25k 34,636 shares | +24% | - | |
| 42Moderate | Hrt Financial LP owner sell | $110k 148,329 shares | -75% | - | |
| 23Weak | Hrt Financial LP owner buy | $128k 166,904 shares | +554% | - |
Transactions
Every row filed, 17 in all.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Apr 21, 2026 | Hrt Financial LP owner | SOpen-market sale Class A Shares | -49,710 | $0.69 | $34k | 33,649 | Apr 22, 2026 |
| Apr 16, 2026 | Hrt Financial LP owner | SOpen-market sale Class A Shares | -53,867 | $0.73 | $39k | 143,185 | Apr 21, 2026 |
| Apr 17, 2026 | Hrt Financial LP owner | POpen-market purchase Class A Shares | +34,636 | $0.73 | $25k | 177,821 | Apr 21, 2026 |
| Apr 20, 2026 | Hrt Financial LP owner | SOpen-market sale Class A Shares | -94,462 | $0.75 | $71k | 83,359 | Apr 21, 2026 |
| Apr 14, 2026 | Hrt Financial LP owner | POpen-market purchase Class A Shares | +74,350 | $0.77 | $57k | 104,498 | Apr 16, 2026 |
| Apr 15, 2026 | Hrt Financial LP owner | POpen-market purchase Class A Shares | +92,554 | $0.76 | $70k | 197,052 | Apr 16, 2026 |
| Aug 15, 2025 | Andrew John Oakley director | JOther Common Stock | +20 | $0.00 | $0 | 20 | Aug 19, 2025 |
| Aug 15, 2025 | Simon Tarsh director | JOther Common Stock | +39 | $0.00 | $0 | 40 | Aug 19, 2025 |
| Aug 15, 2025 | Timothy R. Ramdeen director | JOther Common Stock | +39 | $0.00 | $0 | 40 | Aug 19, 2025 |
| Aug 15, 2025 | Thomas Meier director | JOther Common Stock | +39 | $0.00 | $0 | 39 | Aug 19, 2025 |
| Aug 15, 2025 | Andrew John Oakley director | AGrant or award Common Stock | +618 | $0.00 | $0 | 638 | Aug 19, 2025 |
| Aug 15, 2025 | Thomas Meier director | AGrant or award Common Stock | +618 | $0.00 | $0 | 657 | Aug 19, 2025 |
| Aug 15, 2025 | Timothy R. Ramdeen director | AGrant or award Common Stock | +618 | $0.00 | $0 | 658 | Aug 19, 2025 |
| Aug 15, 2025 | Simon Tarsh director | AGrant or award Common Stock | +618 | $0.00 | $0 | 658 | Aug 19, 2025 |
| Jul 14, 2025 | Altos Venture AG owner | JOther Common Stock | +241,514 | - | - | 273,230 | Jul 16, 2025 |
| Jul 14, 2025 | Altos Venture AG owner | JOther Make-whole right (right to acquire)derivative | -241,514 | - | - | 0 | Jul 16, 2025 |
| Dec 20, 2024 | Christian Bruhlmann Chief Strategy Officer | AGrant or award Common Stock | +177,462 | $0.00 | $0 | 611,372 | Jan 22, 2025 |
Insiders
Everyone who has filed a Form 4 here.
- Altos Venture AGowner
- Christian BruhlmannChief Strategy Officer
- Hrt Financial LPowner
- Thomas Meierdirector
- Andrew John Oakleydirector
- Timothy R. Ramdeendirector, ceo, chair, officer, owner
- Simon Tarshcfo, officer, director
Questions about ONCO
Answered from the filings on this page, as of the latest one.
Are insiders buying ONCO?
No. In the last 90 days no insider at Onconetix, Inc. bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.
Who was the last insider to trade ONCO on the open market?
Hrt Financial LP (10% owner) sold $34k of ONCO on Apr 21, 2026 and filed the Form 4 on Apr 22, 2026. InsiderTell scored 38 (weak).
How many insiders file Form 4 at Onconetix, Inc.?
7 people have filed a Form 4 at Onconetix, Inc., among them Altos Venture AG (10% owner), Christian Bruhlmann (Chief Strategy Officer), Hrt Financial LP (10% owner). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.