HYLN · Insider Trading
Hyliion Holdings Corp.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-01 | Vincent T. Cubbage | Director | G | −5,750 | — |
| 2026-10-01 | Jon Panzer | Chief Financial Officer | C | +134,667 | — |
| 2026-10-01 | Joshua T. Mook | Chief Technology Officer | C | +127,322 | — |
| 2026-10-01 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | C | +123,733 | — |
| 2026-10-01 | Greg Standley | Chief Accounting Officer. | C | +34,183 | — |
| 2026-10-01 | Thomas J. Healy | Chief Executive Officer | C | +424,289 | — |
| 2026-09-22 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | G | −50,000 | — |
| 2026-08-27 | Vincent T. Cubbage | Director | Buy | +50,000 | +$170.00K |
| 2026-08-25 | Thomas J. Healy | Chief Executive Officer | J | −29,840 | −$99.37K |
| 2026-08-21 | Govindaraj Ramasamy | Chief Commercial Officer | J | −6,670 | −$22.48K |
| 2026-08-21 | Greg Standley | Chief Accounting Officer. | J | −3,731 | −$13.92K |
| 2026-08-21 | Jon Panzer | Chief Financial Officer | J | −13,595 | −$45.14K |
| 2026-08-21 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | −11,980 | −$39.89K |
| 2026-08-21 | Joshua T. Mook | Chief Technology Officer | J | −10,700 | −$35.63K |
| 2026-05-27 | Vincent T. Cubbage | Director | G | −11,500 | — |
| 2026-05-21 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | −11,576 | −$46.57K |
| 2026-05-21 | Greg Standley | Chief Accounting Officer. | J | −3,981 | −$16.12K |
| 2026-05-21 | Jon Panzer | Chief Financial Officer | J | −8,065 | −$32.47K |
| 2026-05-21 | Joshua T. Mook | Chief Technology Officer | J | −6,803 | −$27.34K |
| 2026-05-21 | Thomas J. Healy | Chief Executive Officer | J | −28,026 | −$113.20K |
| 2026-05-21 | Govindaraj Ramasamy | Chief Commercial Officer | J | −6,515 | −$26.21K |
| 2026-03-10 | Govindaraj Ramasamy | Chief Commercial Officer | J | −130 | −$263 |
| 2026-03-04 | Joshua T. Mook | Chief Technology Officer | J | −14,816 | −$30.22K |
| 2026-03-04 | Greg Standley | Chief Accounting Officer. | J | −7,411 | −$15.12K |
| 2026-03-04 | Jon Panzer | Chief Financial Officer | J | −16,820 | −$34.31K |
| 2026-03-04 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | −24,900 | −$50.80K |
| 2026-03-04 | Thomas J. Healy | Chief Executive Officer | J | −58,202 | −$119.31K |
| 2026-03-04 | Cheri Lantz | Chief Strategy Officer | J | −16,700 | −$34.07K |
| 2026-03-04 | Govindaraj Ramasamy | Chief Commercial Officer | J | −12,758 | −$26.03K |
| 2026-02-13 | Robert M Knight Jr | Director | A | +60,976 | +$125.00K |
| 2026-02-13 | Rodger L Boehm | Director | A | +60,676 | +$124.39K |
| 2026-02-13 | Jeffrey A Craig | Director | A | +60,976 | +$125.00K |
| 2026-02-13 | Joshua T. Mook | Chief Technology Officer | A | +95,122 | +$195.00K |
| 2026-02-13 | Greg Standley | Chief Accounting Officer. | A | +46,803 | +$95.95K |
| 2026-02-13 | Mary Gustanski | Director | A | +60,976 | +$125.00K |
| 2026-02-13 | Melanie Montague Trent | Director | A | +60,976 | +$125.00K |
| 2026-02-13 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | A | +95,122 | +$195.00K |
| 2026-02-13 | Vincent T. Cubbage | Director | A | +60,976 | +$125.00K |
| 2026-02-13 | Thomas J. Healy | Chief Executive Officer | A | +296,342 | +$607.50K |
| 2026-02-13 | Govindaraj Ramasamy | Chief Commercial Officer | A | +80,488 | +$165.00K |
| 2026-02-13 | Richard Joseph Freeland | Director | A | +60,976 | +$125.00K |
| 2026-02-13 | Jon Panzer | Chief Financial Officer | A | +100,610 | +$206.25K |
| 2025-12-19 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | −2,480 | −$4.41K |
| 2025-12-15 | Jose Miguel Oxholm | Chief Legal&Compliance Officer | J | −23,422 | −$45.44K |
| 2025-12-15 | Greg Standley | Chief Accounting Officer. | J | −4,010 | −$7.78K |
| 2025-12-15 | Cheri Lantz | Chief Strategy Officer | J | −15,646 | −$30.35K |
| 2025-12-15 | Thomas J. Healy | Chief Executive Officer | J | −134,963 | −$261.83K |
| 2025-12-15 | Govindaraj Ramasamy | Chief Commercial Officer | J | −12,949 | −$25.12K |
| 2025-12-15 | Joshua T. Mook | Chief Technology Officer | J | −12,949 | −$25.12K |
| 2025-12-15 | Jon Panzer | Chief Financial Officer | J | −16,440 | −$31.89K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Thomas J. Healy | Chief Executive Officer | 32,984,455 | $103.57M |
| Joshua T. Mook | Chief Technology Officer | 1,223,928 | $3.84M |
| Vincent T. Cubbage | Director | 1,125,613 | $3.53M |
| Jon Panzer | Chief Financial Officer | 994,690 | $3.12M |
| Jose Miguel Oxholm | Chief Legal&Compliance Officer | 873,547 | $2.74M |
| Cheri Lantz | Chief Strategy Officer | 730,204 | $2.29M |
| Govindaraj Ramasamy | Chief Commercial Officer | 593,920 | $1.86M |
| Jeffrey A Craig | Director | 402,845 | $1.26M |
| Robert M Knight Jr | Director | 375,345 | $1.18M |
| Richard Joseph Freeland | Director | 283,774 | $891.05K |
| Greg Standley | Chief Accounting Officer. | 270,201 | $848.43K |
| Mary Gustanski | Director | 256,379 | $805.03K |
| Melanie Montague Trent | Director | 218,774 | $686.95K |
| Rodger L Boehm | Director | 218,474 | $686.01K |
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.
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.