ONCO · Insider Trading
Onconetix, Inc. Common Stock
Every open-market purchase and sale reported by ONCO officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-22 | HRT FINANCIAL LP | 10%+ Owner | Sell | −49,710 | −$34.30K |
| 2026-04-21 | HRT FINANCIAL LP | 10%+ Owner | MIXED | −113,693 | −$84.89K |
| 2026-04-16 | HRT FINANCIAL LP | 10%+ Owner | Buy | +166,904 | +$127.59K |
| 2025-08-19 | Andrew John Oakley | Director | MIXED | +638 | — |
| 2025-08-19 | Timothy R. Ramdeen | Director | MIXED | +657 | — |
| 2025-08-19 | Thomas Meier | Director | MIXED | +657 | — |
| 2025-08-19 | Simon Tarsh | Director | MIXED | +657 | — |
| 2025-07-16 | Altos Venture AG | 10%+ Owner | J | +241,514 | — |
| 2025-03-25 | Andrew John Oakley | Director | A | +1,709 | — |
| 2025-01-22 | Ralph Schiess | Interim CEO, CSO | A | +177,462 | — |
| 2025-01-22 | Christian Bruhlmann | Chief Strategy Officer | A | +177,462 | — |
| 2024-09-30 | Thomas Meier | Director | A | +3,318 | — |
| 2024-09-30 | Simon Tarsh | Director | A | +3,318 | — |
| 2024-09-30 | Timothy R. Ramdeen | Director | A | +3,318 | — |
| 2024-09-30 | Ajit Singh | Director | A | +3,318 | — |
| 2024-09-30 | James Sapirstein | Director | A | +3,318 | — |
| 2024-09-26 | Ralph Schiess | Interim CEO & CSO | A | +489,160 | — |
| 2024-09-26 | Christian Bruhlmann | Chief Strategy Officer | A | +428,010 | — |
| 2024-02-21 | Ajit Singh | Director | A | +3,125 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Altos Venture AG | 10%+ Owner | 5,465 | $2.18K |
| HRT FINANCIAL LP | 10%+ Owner | 3,365 | $1.34K |
| Ralph Schiess | Interim CEO, CSO | 158 | $63 |
| Christian Bruhlmann | Chief Strategy Officer | 144 | $57 |
| Timothy R. Ramdeen | Director | 13 | $5 |
| Thomas Meier | Director | 13 | $5 |
| Andrew John Oakley | Director | 13 | $5 |
| Simon Tarsh | Director | 1 | $0 |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the ONCO quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.