As of the latest Form 4 filed Jun 30, 2026.
What Hyliion Holdings Corp. insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Newest filing first — the 35 most recent filings for HYLN.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-30 | 2026-06-26 | Healy Thomas J. Chief Executive Officer | GGift | −2.50M | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-26 | Cubbage Vincent T. Director | GGift | −11.5K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-20 | RAMASAMY GOVINDARAJ Chief Commercial Officer | JOther | −1.72K | $3.92 | $6.72K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-20 | Oxholm Jose Miguel Chief Legal&Compliance Officer | JOther | −3.03K | $3.92 | $11.9K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-20 | MOOK JOSHUA T. Chief Technology Officer | JOther | −2.00K | $3.92 | $7.85K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-20 | Panzer Jon Chief Financial Officer | JOther | −1.97K | $3.92 | $7.70K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-20 | Healy Thomas J. Chief Executive Officer | JOther | −11.4K | $3.98 | $45.5K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-19 | Standley Greg Chief Accounting Officer. | JOther | −3.98K | $4.05 | $16.1K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-19 | RAMASAMY GOVINDARAJ Chief Commercial Officer | JOther | −4.80K | $4.06 | $19.5K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-19 | Oxholm Jose Miguel Chief Legal&Compliance Officer | JOther | −8.55K | $4.06 | $34.7K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-19 | MOOK JOSHUA T. Chief Technology Officer | JOther | −4.80K | $4.06 | $19.5K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-19 | Panzer Jon Chief Financial Officer | JOther | −6.10K | $4.06 | $24.8K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-19 | Healy Thomas J. Chief Executive Officer | JOther | −16.6K | $4.08 | $67.7K | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-10 | RAMASAMY GOVINDARAJ Chief Commercial Officer | JOther | −130.00 | $2.02 | $262.60 | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Trent Melanie Montague Director | AAward | +61.0K | $2.05 | $125K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | KNIGHT ROBERT M JR Director | AAward | +61.0K | $2.05 | $125K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Gustanski Mary Director | AAward | +61.0K | $2.05 | $125K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Freeland Richard Joseph Director | AAward | +61.0K | $2.05 | $125K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Cubbage Vincent T. Director | AAward | +61.0K | $2.05 | $125K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Craig Jeffrey A Director | AAward | +61.0K | $2.05 | $125K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Boehm Rodger L Director | AAward | +60.7K | $2.05 | $124K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Standley Greg Chief Accounting Officer. | AAward | +46.8K | $2.05 | $95.9K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | RAMASAMY GOVINDARAJ Chief Commercial Officer | AAward | +80.5K | $2.05 | $165K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Oxholm Jose Miguel Chief Legal&Compliance Officer | AAward | +95.1K | $2.05 | $195K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | MOOK JOSHUA T. Chief Technology Officer | AAward | +95.1K | $2.05 | $195K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Panzer Jon Chief Financial Officer | AAward | +101K | $2.05 | $206K | No | Form 4 ↗ |
| 2026-02-13 | 2026-02-11 | Healy Thomas J. Chief Executive Officer | AAward | +296K | $2.05 | $608K | No | Form 4 ↗ |
| 2025-12-19 | 2025-12-17 | Oxholm Jose Miguel Chief Legal&Compliance Officer | JOther | −2.48K | $1.78 | $4.41K | No | Form 4 ↗ |
| 2025-12-15 | 2025-12-12 | Standley Greg Chief Accounting Officer. | JOther | −4.01K | $1.94 | $7.78K | No | Form 4 ↗ |
| 2025-12-15 | 2025-12-12 | RAMASAMY GOVINDARAJ Chief Commercial Officer | JOther | −12.9K | $1.94 | $25.1K | No | Form 4 ↗ |
| 2025-12-15 | 2025-12-12 | Oxholm Jose Miguel Chief Legal&Compliance Officer | JOther | −23.4K | $1.94 | $45.4K | No | Form 4 ↗ |
| 2025-12-15 | 2025-12-12 | MOOK JOSHUA T. Chief Technology Officer | JOther | −12.9K | $1.94 | $25.1K | No | Form 4 ↗ |
| 2025-12-15 | 2025-12-12 | LANTZ CHERI Chief Strategy Officer | JOther | −15.6K | $1.94 | $30.4K | No | Form 4 ↗ |
| 2025-12-15 | 2025-12-12 | Panzer Jon Chief Financial Officer | JOther | −16.4K | $1.94 | $31.9K | No | Form 4 ↗ |
| 2025-12-15 | 2025-12-12 | Healy Thomas J. Chief Executive Officer | JOther | −135K | $1.94 | $262K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also HYLN’s full analysis or the market-wide insider trading feed. The tabs above jump to HYLN’s other SEC data.
Source: SEC Form 4 filings for HYLN, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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