Updated Jul 16, 2026 · Last SEC filing 2026-06-30
Hyliion Holdings Corp. (HYLN) has filed 8 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-30. 2 Form 8-K material event filings were reported by HYLN in the last 90 days. 5 Form 144 notices of proposed sale were filed for HYLN stock. InsiderAlpha tracks every HYLN SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0001759631 |
|---|
| Form 4 filings (90d) | 8 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 5 |
| Latest Form 4 filing | 2026-06-30 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Healy Thomas J. | Chief Executive Officer | G — Bona-fide gift | 2.50M | $0.00 | — | SEC | |
| Cubbage Vincent T. | Director | G — Bona-fide gift | 11.5K | $0.00 | — | SEC | |
| RAMASAMY GOVINDARAJ | Chief Commercial Officer | J — Other acquisition / disposition | 1.7K | $3.92 | $7K | SEC | |
| Panzer Jon | Chief Financial Officer | J — Other acquisition / disposition | 2.0K | $3.92 | $8K | SEC | |
| Oxholm Jose Miguel | Chief Legal&Compliance Officer | J — Other acquisition / disposition | 3.0K | $3.92 | $12K | SEC | |
| Healy Thomas J. | Chief Executive Officer | J — Other acquisition / disposition | 11.4K | $3.98 | $45K | SEC | |
| MOOK JOSHUA T. | Chief Technology Officer | J — Other acquisition / disposition | 2.0K | $3.92 | $8K | SEC | |
| Oxholm Jose Miguel | Chief Legal&Compliance Officer | J — Other acquisition / disposition | 8.6K | $4.06 | $35K | SEC | |
| MOOK JOSHUA T. | Chief Technology Officer | J — Other acquisition / disposition | 4.8K | $4.06 | $19K | SEC | |
| Panzer Jon | Chief Financial Officer | J — Other acquisition / disposition | 6.1K | $4.06 | $25K | SEC | |
| Standley Greg | Chief Accounting Officer. | J — Other acquisition / disposition | 4.0K | $4.05 | $16K | SEC | |
| RAMASAMY GOVINDARAJ | Chief Commercial Officer | J — Other acquisition / disposition | 4.8K | $4.06 | $19K | SEC | |
| Healy Thomas J. | Chief Executive Officer | J — Other acquisition / disposition | 16.6K | $4.08 | $68K | SEC | |
| RAMASAMY GOVINDARAJ | Chief Commercial Officer | J — Other acquisition / disposition | 130 | $2.02 | $263 | SEC | |
| MOOK JOSHUA T. | Chief Technology Officer | J — Other acquisition / disposition | 14.8K | $2.04 | $30K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Hyliion Holdings Corp. (HYLN). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Healy Thomas J. | 3 | $113K |
| Panzer Jon | 2 | $32K |
| Oxholm Jose Miguel | 2 | $47K |
| RAMASAMY GOVINDARAJ | 2 | $26K |
| MOOK JOSHUA T. | 2 | $27K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in HYLN insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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