8 insiders reported 31 Form 4 transactions for HYPERION DEFI, INC. (HYPD) over the past 18 months (most recent 2026-07-01). Recent activity: Strahlman Ellen R (Director) Buy 58,917 shares, Walters Happy David (Director) Buy 58,917 shares, GELTZEILER MICHAEL S (Director) Buy 58,917 shares, JACOBSON RACHEL (Director) Buy 58,917 shares, Jung Hyunsu (See Remarks) Buy 5,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-01 | Strahlman Ellen R | Director | Buy | 58,917 | $0 |
| 2026-07-01 | Walters Happy David | Director | Buy | 58,917 | $0 |
| 2026-07-01 | GELTZEILER MICHAEL S | Director | Buy | 58,917 | $0 |
| 2026-07-01 | JACOBSON RACHEL | Director | Buy | 58,917 | $0 |
| 2026-06-02 | Jung Hyunsu | See Remarks | Buy | 5,000 | $18,300 |
| 2026-06-02 | Jung Hyunsu | See Remarks | Buy | 2,000 | $7,620 |
| 2026-06-02 | Jung Hyunsu | See Remarks | Buy | 500 | $1,820 |
| 2026-06-02 | Jung Hyunsu | See Remarks | Buy | 500 | $1,840 |
| 2026-01-12 | Rubenstein Robert | General Counsel | Buy | 75,000 | $0 |
| 2026-01-05 | Knox David R. | Chief Financial Officer | Buy | 27,950 | $100,340 |
| 2025-12-30 | Strahlman Ellen R | Director | Buy | 3,311 | $12,780 |
| 2025-12-30 | Strahlman Ellen R | Director | Buy | 3,601 | $13,900 |
| 2025-12-30 | Jung Hyunsu | See Remarks | Sell | 82,324 | $0 |
| 2025-12-30 | Strahlman Ellen R | Director | Buy | 11,856 | $42,800 |
| 2025-12-30 | Strahlman Ellen R | Director | Buy | 12,112 | $43,603 |
| 2025-12-22 | Strahlman Ellen R | Director | Buy | 18,742 | $58,850 |
| 2025-12-22 | Strahlman Ellen R | Director | Buy | 19,702 | $61,864 |
| 2025-12-19 | GELTZEILER MICHAEL S | Director | Buy | 30,000 | $90,300 |
| 2025-12-19 | Walters Happy David | Director | Buy | 61,930 | $187,029 |
| 2025-10-01 | Knox David R. | Chief Financial Officer | Buy | 200,000 | $0 |
| 2025-10-01 | Knox David R. | Chief Financial Officer | Buy | 100,000 | $0 |
| 2025-09-09 | Walters Happy David | Director | Buy | 50,000 | $0 |
| 2025-08-20 | GELTZEILER MICHAEL S | Director | Buy | 50,000 | $0 |
| 2025-08-20 | Jung Hyunsu | Chief Investment Officer | Buy | 1.0M | $0 |
| 2025-08-20 | JACOBSON RACHEL | Director | Buy | 50,000 | $0 |
Source: SEC Form 4 filings · as of 2026-07-01