Hyliion CFO reports performance award share acquisitions

The award conditions were satisfied on September 28, 2026, followed by Compensation Committee approval on September 30.

Rhea-AI Filing Summary

Hyliion Holdings Corp. Chief Financial Officer Jon Panzer reported dispositions of 59,210 and 75,457 performance stock incentive units and acquisitions of corresponding common shares dated September 30, 2026. The underlying market conditions were satisfied on September 28, 2026, and approved by the Compensation Committee on September 30. Half of the 59,210-share award is scheduled for issuance on September 30, 2027, with the remainder on December 31, 2027; the 75,457-share award is scheduled for issuance on December 31, 2028. The respective vesting thresholds covered 25% and 20% of the awards at a minimum of $4.00 per share over a 180-calendar-day average.

Insider Trade Summary

134,667 shares exercised/converted

Exercise 4 txns

Insider Panzer Jon

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Conversion	Performance Stock Incentive Units F3	59,210	$0.00	$0.00
Conversion	Performance Stock Incentive Units F4	75,457	$0.00	$0.00
Conversion	Common Stock F1	59,210	$0.00	$0.00
Conversion	Common Stock F2	75,457	$0.00	$0.00

Holdings After Transaction: Performance Stock Incentive Units — 463,216 contracts (Direct); Common Stock — 1,070,147 shares (Direct)

Footnotes (4)

1. F1. The underlying market conditions for vesting of this portion of performance stock incentive units ("PSU Award") were satisfied on September 28, 2026, and subsequently approved by the Compensation Committee on September 30, 2026. Half of the vested PSUs will be issued on September 30, 2027 with the remainder to be issued on December 31, 2027.
2. F2. The underlying market conditions for vesting of this portion of performance stock incentive units ("PSU Award") were satisfied on September 28, 2026, and subsequently approved by the Compensation Committee on September 30, 2026. These vested PSUs will be issued on December 31, 2028.
3. F3. 25% of these PSU Awards vested upon the achievement of the underlying closing stock price threshold of a minimum of $4.00 per share over a 180-calendar-day average.
4. F4. 20% of these PSU Awards vested upon the achievement of the underlying closing stock price threshold of a minimum of $4.00 per share over a 180-calendar-day average.

Key Figures

Common shares acquired: 59,210 shares Common shares acquired: 75,457 shares Vesting portion of PSU award: 25% +3 more

6 metrics

Common shares acquired 59,210 shares Transaction dated September 30, 2026; issuance scheduled to begin September 30, 2027

Common shares acquired 75,457 shares Transaction dated September 30, 2026; issuance scheduled for December 31, 2028

Vesting portion of PSU award 25% Threshold of a minimum of $4.00 per share over a 180-calendar-day average

Vesting portion of PSU award 20% Threshold of a minimum of $4.00 per share over a 180-calendar-day average

Minimum closing stock price threshold $4.00 per share Measured over a 180-calendar-day average

Average period 180 calendar days Closing stock price threshold for PSU vesting

Key Terms

PSU Award, 180-calendar-day average, closing stock price threshold

3 terms

PSU Award financial

"performance stock incentive units ("PSU Award")"

180-calendar-day average financial

"minimum of $4.00 per share over a 180-calendar-day average"

closing stock price threshold financial

"underlying closing stock price threshold of a minimum of $4.00 per share"

FAQ

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How many HYLN shares did CFO Jon Panzer report?

Jon Panzer, Hyliion's Chief Financial Officer, reported dispositions of 59,210 and 75,457 performance stock incentive units, alongside acquisitions of corresponding common shares dated September 30, 2026. The associated footnotes schedule issuance for dates in 2027 and 2028.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/01/2026 - 05:59 PM Accepted by SEC EDGAR 10/01/2026 - 05:58 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Panzer Jon

(Last) (First) (Middle)

C/O HYLIION HOLDING CORP.

1202 BMC DRIVE, SUITE 100

(Street)

CEDAR PARK TEXAS 78613

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Hyliion Holdings Corp. [ HYLN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/30/2026		C(1)		59,210	A	$0	994,690	D
Common Stock	09/30/2026		C(2)		75,457	A	$0	1,070,147	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Performance Stock Incentive Units	(3)	09/30/2026		C			59,210	02/18/2026	12/31/2027	Common Stock	59,210	$0	236,843	D
Performance Stock Incentive Units	(4)	09/30/2026		C			75,457	12/31/2028	12/31/2028	Common Stock	75,457	$0	226,373	D

Explanation of Responses:

1. The underlying market conditions for vesting of this portion of performance stock incentive units ("PSU Award") were satisfied on September 28, 2026, and subsequently approved by the Compensation Committee on September 30, 2026. Half of the vested PSUs will be issued on September 30, 2027 with the remainder to be issued on December 31, 2027.

2. The underlying market conditions for vesting of this portion of performance stock incentive units ("PSU Award") were satisfied on September 28, 2026, and subsequently approved by the Compensation Committee on September 30, 2026. These vested PSUs will be issued on December 31, 2028.

3. 25% of these PSU Awards vested upon the achievement of the underlying closing stock price threshold of a minimum of $4.00 per share over a 180-calendar-day average.

4. 20% of these PSU Awards vested upon the achievement of the underlying closing stock price threshold of a minimum of $4.00 per share over a 180-calendar-day average.

Remarks:

	/s/ Jon Panzer	10/01/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)