HYLN (Hyliion Holdings Corp.)
Insider Trading Activity
Every open-market purchase and sale reported by HYLN 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.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-22 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | G | — | — |
| 2026-08-27 | Vincent T. Cubbage | Director | Buy | — | — |
| 2026-08-25 | Thomas J. Healy | Chief Executive Officer | J | — | — |
| 2026-08-21 | GOVINDARAJ RAMASAMY | Chief Commercial Officer | J | — | — |
| 2026-08-21 | Greg Standley | Chief Accounting Officer. | J | — | — |
| 2026-08-21 | Jon Panzer | Chief Financial Officer | J | — | — |
| 2026-08-21 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | — | — |
| 2026-08-21 | JOSHUA T. MOOK | Chief Technology Officer | J | — | — |
| 2026-05-27 | Vincent T. Cubbage | Director | G | — | — |
| 2026-05-21 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | — | — |
| 2026-05-21 | Greg Standley | Chief Accounting Officer. | J | — | — |
| 2026-05-21 | Jon Panzer | Chief Financial Officer | J | — | — |
| 2026-05-21 | JOSHUA T. MOOK | Chief Technology Officer | J | — | — |
| 2026-05-21 | Thomas J. Healy | Chief Executive Officer | J | — | — |
| 2026-05-21 | GOVINDARAJ RAMASAMY | Chief Commercial Officer | J | — | — |
| 2026-03-10 | GOVINDARAJ RAMASAMY | Chief Commercial Officer | J | — | — |
| 2026-03-04 | JOSHUA T. MOOK | Chief Technology Officer | J | — | — |
| 2026-03-04 | Greg Standley | Chief Accounting Officer. | J | — | — |
| 2026-03-04 | Jon Panzer | Chief Financial Officer | J | — | — |
| 2026-03-04 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | — | — |
| 2026-03-04 | Thomas J. Healy | Chief Executive Officer | J | — | — |
| 2026-03-04 | CHERI LANTZ | Chief Strategy Officer | J | — | — |
| 2026-03-04 | GOVINDARAJ RAMASAMY | Chief Commercial Officer | J | — | — |
| 2026-02-13 | ROBERT M KNIGHT JR | Director | A | — | — |
| 2026-02-13 | Rodger L Boehm | Director | A | — | — |
| 2026-02-13 | Jeffrey A Craig | Director | A | — | — |
| 2026-02-13 | JOSHUA T. MOOK | Chief Technology Officer | A | — | — |
| 2026-02-13 | Greg Standley | Chief Accounting Officer. | A | — | — |
| 2026-02-13 | Mary Gustanski | Director | A | — | — |
| 2026-02-13 | Melanie Montague Trent | Director | A | — | — |
| 2026-02-13 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | A | — | — |
| 2026-02-13 | Vincent T. Cubbage | Director | A | — | — |
| 2026-02-13 | Thomas J. Healy | Chief Executive Officer | A | — | — |
| 2026-02-13 | GOVINDARAJ RAMASAMY | Chief Commercial Officer | A | — | — |
| 2026-02-13 | Richard Joseph Freeland | Director | A | — | — |
| 2026-02-13 | Jon Panzer | Chief Financial Officer | A | — | — |
| 2025-12-19 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | — | — |
| 2025-12-15 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | — | — |
| 2025-12-15 | Greg Standley | Chief Accounting Officer. | J | — | — |
| 2025-12-15 | CHERI LANTZ | Chief Strategy Officer | J | — | — |
| 2025-12-15 | Thomas J. Healy | Chief Executive Officer | J | — | — |
| 2025-12-15 | GOVINDARAJ RAMASAMY | Chief Commercial Officer | J | — | — |
| 2025-12-15 | JOSHUA T. MOOK | Chief Technology Officer | J | — | — |
| 2025-12-15 | Jon Panzer | Chief Financial Officer | J | — | — |
| 2025-12-03 | CHERI LANTZ | Chief Strategy Officer | J | — | — |
| 2025-12-01 | JOSHUA T. MOOK | Chief Technology Officer | MIXED | — | — |
| 2025-12-01 | Greg Standley | Chief Accounting Officer. | F | — | — |
| 2025-12-01 | Jon Panzer | Chief Financial Officer | F | — | — |
| 2025-11-18 | Greg Standley | Chief Accounting Officer. | F | — | — |
| 2025-11-18 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | F | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Chief Executive Officer | 32,782,422 | — |
| — | Director | 12,152,962 | — |
| — | Director | 1,131,363 | — |
| — | Chief Technology Officer | 1,096,606 | — |
| — | Director | 1,035,705 | — |
| — | Chief Financial Officer | 935,480 | — |
| — | Chief Legal&Compliance Officer | 749,814 | — |
| — | Chief Strategy Officer | 730,204 | — |
| — | Chief Commercial Officer | 593,920 | — |
| — | Chief Operating Officer | 448,109 | — |
| — | Director | 402,845 | — |
| — | Director | 375,345 | — |
| — | Chief Technology Officer | 364,499 | — |
| — | Director | 283,774 | — |
| — | Chief Financial Officer | 272,149 | — |
| — | Director | 256,379 | — |
| — | Chief Accounting Officer. | 253,568 | — |
| — | Chief Financial Officer | 230,317 | — |
| — | Director | 218,774 | — |
| — | Director | 218,474 | — |
| — | Director | 130,009 | — |
| — | Director | 101,435 | — |
| — | Director | 57,606 | — |
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 HYLN quote page; the site-wide leaderboard is on the insider transactions hub.