HYLN Insider Report: Greg Standley Withholds 519 Shares to Cover RSU Taxes

Rhea-AI Filing Summary

Greg Standley, Chief Accounting Officer of Hyliion Holdings Corp. (HYLN), reported a Form 4 disclosing a small disposition related to restricted stock unit tax withholding. On 08/27/2025 he disposed of 519 shares of Hyliion common stock at $1.69 per share. The filing states the shares were withheld to satisfy a tax liability arising from the vesting and distribution of restricted stock units. After the transaction, Mr. Standley beneficially owned 231,533 shares, held directly. The Form 4 is a routine insider reporting of a tax-withholding disposition rather than a voluntary sale for cash.

Positive

• Transparent disclosure of the tax-withholding disposition consistent with Section 16 reporting
• Substantial remaining ownership of 231,533 shares, indicating continued insider alignment with shareholders

Negative

• None.

Insights

Securities Analyst

TL;DR: Minor tax-withholding disposition of RSUs; not a material change to insider stake.

The reported transaction is a common administrative transfer where 519 shares were withheld to cover tax obligations on vested restricted stock units. The disposal amount and dollar value ($1.69 per share) are immaterial relative to the remaining holding of 231,533 shares. This type of filing typically has no direct bearing on company operations or near-term valuation, and it does not indicate an opportunistic sale by the officer.

Corporate Governance Expert

TL;DR: Routine insider reporting consistent with RSU vesting practices; disclosure meets Section 16 requirements.

The Form 4 clearly states the transaction code and provides the required details, including the reason: withholding for tax liabilities on RSU vesting. From a governance standpoint, this is standard practice and appropriately disclosed. There is no indication of noncompliance or other governance concerns in the filing.

Insider Trade Summary

Net Seller: 519 shares

Net Sell 1 txn

Insider Standley Greg

Role Chief Accounting Officer.

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	519	$1.69	$877.11

Holdings After Transaction: Common Stock — 231,533 shares (Direct)

Footnotes (1)

1. F1. Shares withheld for the payment of a tax liability related to the vesting and distribution of restricted stock units.

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

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 08/29/2025 - 05:03 PM Learn about SEC filing dates

FAQ

What did Greg Standley report on the Form 4 for HYLN?

He reported a disposition of 519 shares on 08/27/2025 at $1.69 per share, withheld to pay taxes on vested restricted stock units.

Why were the 519 shares disposed of according to the filing?

The filing explains the shares were withheld to satisfy a tax liability related to the vesting and distribution of restricted stock units.

How many Hyliion shares does Greg Standley beneficially own after the transaction?

He beneficially owns 231,533 shares following the reported transaction.

Does this Form 4 indicate an open-market sale by the insider?

No. The Form 4 indicates a tax-withholding disposition tied to RSU vesting rather than a voluntary open-market sale for cash.

When was the Form 4 signed by the reporting person?

The filing includes a signature dated 08/29/2025 by Greg Standley.

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^*

Standley Greg

(Last) (First) (Middle)

C/O HYLIION HOLDING CORP.

1202 BMC DRIVE, SUITE 100

(Street)

CEDAR PARK TX 78613

(City) (State) (Zip)

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 Accounting Officer.

3. Date of Earliest Transaction (Month/Day/Year)
08/27/2025

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

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

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

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	08/27/2025		F(1)		519	D	$1.69	231,533	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

Explanation of Responses:

1. Shares withheld for the payment of a tax liability related to the vesting and distribution of restricted stock units.

Remarks:

	/s/ Greg Standley	08/29/2025
	** 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.