hyln-20260519

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

(Exact name of registrant as specified in its charter)

Delaware

001-38823

83-2538002

(State or Other Jurisdiction
of Incorporation)

(Commission File Number)

(I.R.S. Employer
Identification No.)


1202 BMC Drive, Suite 100 Cedar Park,TX						78613
(Address of principal executive offices)						(Zip Code)

(Registrant’s telephone number,
including area code)

(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:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

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

o 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:

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).

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. ☐

Item 5.07 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:

•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;

•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;

•Stockholders approved, on an advisory basis, the compensation of the Company’s named executive officers (“Say on Pay”); and

•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.


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


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

Hyliion Holdings Corp. 2024 Equity Incentive Plan Amendment


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

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.


		HYLIION HOLDINGS CORP.

		By:	/s/ Thomas Healy
Date:	May 19, 2026		Thomas Healy
			Chief Executive Officer


For	Against	Abstain
128,399,016	794,022	306,551