# EDGAR Filing Document

**Accession Number:** 0001759631
**File Stem:** 0001628280-26-036465
**Filing Date:** 2026-5
**Character Count:** 6166
**Document Hash:** 4ebdc927538d49f72b8b33c3e16dfa55
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-036465.hdr.sgml**: 20260519

**ACCESSION NUMBER**: 0001628280-26-036465

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 11

**CONFORMED PERIOD OF REPORT**: 20260519

**ITEM INFORMATION**: Submission of Matters to a Vote of Security Holders

**FILED AS OF DATE**: 20260519

**DATE AS OF CHANGE**: 20260519

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Hyliion Holdings Corp.
- **CENTRAL INDEX KEY:** 0001759631
- **STANDARD INDUSTRIAL CLASSIFICATION:** TRUCK & BUS BODIES [3713]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38823
- **FILM NUMBER:** 26999018

**BUSINESS ADDRESS:**
- **STREET 1:** 1202 BMC DRIVE, SUITE 100
- **CITY:** CEDAR PARK
- **STATE:** TX
- **ZIP:** 78613
- **BUSINESS PHONE:** (833) 495-4466

**MAIL ADDRESS:**
- **STREET 1:** 1202 BMC DRIVE, SUITE 100
- **CITY:** CEDAR PARK
- **STATE:** TX
- **ZIP:** 78613

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Tortoise Acquisition Corp.
- **DATE OF NAME CHANGE:** 20181120

?xml version='1.0' encoding='ASCII'? hyln-20260519

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported): **May 19, 2026**

**HYLIION HOLDINGS CORP.**

(Exact name of registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Delaware** | **001-38823** | **83-2538002** |
| (State or Other Jurisdiction<br>of Incorporation) | (Commission File Number) | (I.R.S. Employer<br>Identification No.) |

---

---

| | |
|:---|:---|
| **1202 BMC Drive, Suite 100**<br>**Cedar Park,TX** | **78613** |
| (Address of principal executive offices) | (Zip Code) |

---

**(833) 495-4466**

(Registrant's telephone number,

including area code)

**N/A**

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligations of the registrant under any of the following provisions:

□&nbsp;&nbsp;&nbsp;&nbsp;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

□&nbsp;&nbsp;&nbsp;&nbsp;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

□&nbsp;&nbsp;&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

□&nbsp;&nbsp;&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240-13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading symbol(s)** | **Name of each exchange on which registered** |
| Common Stock, $0.0001 par value per share | HYLN | NYSE American LLC |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b–2 of the Securities Exchange Act of 1934 (§240.12b–2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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**Item 5.07&nbsp;&nbsp;&nbsp;&nbsp;Submission of Matters to a Vote of Security Holders.**

The 2026 Annual Meeting of Stockholders (the "Annual Meeting") of Hyliion Holdings Corp. ("Hyliion" or the "Company") was held on May 19, 2026. At the Annual Meeting:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Stockholders elected the three nominees recommended by the Company's board of directors to serve as Class III directors of the Company until the 2029 Annual Meeting of Stockholders or until their respective successors are elected and qualified;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Stockholders ratified the selection of Grant Thornton LLP (the "Auditor") to serve as the independent registered public accounting firm of the Company for the 2026 fiscal year ended December 31, 2026;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Stockholders approved, on an advisory basis, the compensation of the Company's named executive officers ("Say on Pay"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Stockholders approved an amendment to the Hyliion Holdings Corp. 2024 Equity Incentive Plan.

Set forth below, with respect to each such matter, are the number of votes cast for or against/withhold, the number of abstentions and the number of broker non-votes.

*<u>Election of Directors</u>*

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| | | | |
|:---|:---|:---|:---|
| **Nominee** | **For** | **Withhold** | **Broker Non-Votes** |
| Rodger Boehm | 76,995,427 | 4,491,490 | 48,012,672 |
| Mary Gustanski | 76,914,906 | 4,572,011 | 48,012,672 |
| Robert Knight, Jr. | 76,409,910 | 5,077,007 | 48,012,672 |

---

*<u>Ratification of Auditor</u>*

---

| | | |
|:---|:---|:---|
| **For** | **Against** | **Abstain** |
| 128,399,016 | 794,022 | 306,551 |

---

*<u>Say on Pay</u>*

---

| | | | |
|:---|:---|:---|:---|
| **For** | **Against** | **Abstain** | **Broker Non-Votes** |
| 76,638,179 | 4,601,903 | 246,835 | 48,012,672 |

---

*<u>Hyliion Holdings Corp. 2024 Equity Incentive Plan Amendment</u>*

---

| | | | |
|:---|:---|:---|:---|
| **For** | **Against** | **Abstain** | **Broker Non-Votes** |
| 72,466,721 | 8,607,662 | 412,534 | 48,012,672 |

---

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused the report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | | |
|:---|:---|:---|:---|
| | | **HYLIION HOLDINGS CORP.** | **HYLIION HOLDINGS CORP.** |
| | | By: | /s/ Thomas Healy |
| Date: | May 19, 2026 |  | Thomas Healy |
|  |  |  | Chief Executive Officer |

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