| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| LANTZ CHERI | Chief Strategy Officer | C/O HYLIION HOLDING CORP., 1202 BMC DRIVE, SUITE 100, CEDAR PARK | /s/ Cheri Lantz | 2025-11-18 | 0001914910 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | HYLN | Common Stock | Tax liability | $0 | 0 | 0% | $0.00 | 793K | Aug 25, 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | This Amended Form 4 has been filed to delete a reference to shares withheld to satisfy taxes on the reporting person's Form 4 filed with the SEC on August 25, 2025. The shares were initially reported as withheld as a result of an administrative error by the issuer's third party service provider. No shares were withheld on August 25, 2025 and Column 5 of Table 1 has been revised accordingly. |