HYPD · Insider Trading
Hyperion DeFi, Inc. Common Stock
Every open-market purchase and sale reported by HYPD 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 |
|---|---|---|---|---|---|
| 2026-09-30 | David R. Knox | Chief Financial Officer | F | −19,563 | — |
| 2026-08-18 | Hyunsu Jung | See Remarks | F | −40,000 | — |
| 2026-07-01 | Michael S Geltzeiler | Director | A | +58,917 | — |
| 2026-07-01 | Happy David Walters | Director | A | +58,917 | — |
| 2026-07-01 | Ellen R Strahlman | Director | A | +58,917 | — |
| 2026-07-01 | Rachel Jacobson | Director | A | +58,917 | — |
| 2026-06-02 | Hyunsu Jung | See Remarks | Buy | +8,000 | +$29.58K |
| 2026-05-28 | Hyunsu Jung | See Remarks | F | −40,000 | — |
| 2026-04-01 | David R. Knox | Chief Financial Officer | F | −20,831 | — |
| 2026-01-12 | Robert Rubenstein | General Counsel | A | +75,000 | — |
| 2026-01-05 | David R. Knox | Chief Financial Officer | Buy | +27,950 | +$100.34K |
| 2025-12-30 | Hyunsu Jung | See Remarks | F | −82,324 | — |
| 2025-12-30 | Ellen R Strahlman | Director | Buy | +30,880 | +$113.09K |
| 2025-12-22 | Ellen R Strahlman | Director | Buy | +38,444 | +$120.66K |
| 2025-12-19 | Michael S Geltzeiler | Director | Buy | +30,000 | +$90.21K |
| 2025-12-19 | Happy David Walters | Director | Buy | +61,930 | +$187.15K |
| 2025-10-01 | David R. Knox | Chief Financial Officer | A | +300,000 | — |
| 2025-09-09 | Happy David Walters | Director | A | +50,000 | — |
| 2025-08-20 | Michael S Geltzeiler | Director | A | +50,000 | — |
| 2025-08-20 | Ellen R Strahlman | Director | A | +50,000 | — |
| 2025-08-20 | Rachel Jacobson | Director | A | +50,000 | — |
| 2025-08-20 | Hyunsu Jung | Chief Investment Officer | A | +1,000,000 | — |
| 2025-07-09 | Michael S Geltzeiler | Director | A | +7,000 | — |
| 2025-07-09 | Michael M Rowe | Chief Executive Officer | A | +6,600 | — |
| 2025-07-09 | Ellen R Strahlman | Director | A | +5,000 | — |
| 2025-07-09 | Rachel Jacobson | Director | A | +5,000 | — |
| 2025-07-09 | Hyunsu Jung | Chief Investment Officer | A | +500,000 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Hyunsu Jung | See Remarks | 1,345,676 | $3.84M |
| David R. Knox | Chief Financial Officer | 287,556 | $819.53K |
| Ellen R Strahlman | Director | 173,091 | $493.31K |
| Happy David Walters | Director | 170,847 | $486.91K |
| Michael S Geltzeiler | Director | 146,932 | $418.76K |
| Rachel Jacobson | Director | 115,218 | $328.37K |
| Robert Rubenstein | General Counsel | 75,000 | $213.75K |
| Michael M Rowe | Chief Executive Officer | 7,975 | $22.73K |
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 HYPD 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.