Hyliion CEO has 29.8K shares sold for taxes

Rhea-AI Filing Summary

Hyliion Holdings Corp. (HYLN) reported that Chief Executive Officer and 10% owner Thomas J. Healy had 29,840 shares of common stock treated as a disposition on 2026-08-21 at $3.33 per share under transaction code J. According to the award agreement, these shares were sold at the direction of the issuer solely to cover Healy’s tax withholding obligations, and his directly held stake after the transaction was 32,782,422 shares.

Insider Trade Summary

Other: 29,840 shares

Other 1 txn

Insider Healy Thomas J.

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Other	Common Stock F1	29,840	$3.33	$99K

Holdings After Transaction: Common Stock — 32,782,422 shares (Direct)

Footnotes (1)

1. F1. These shares were sold at the direction of the issuer under the terms of the issuer's award agreement with the reporting person. Under the award agreement, the decision to sell shares to cover the reporting person's tax withholding obligations is at the sole discretion of the issuer.

Key Figures

Shares disposed: 29,840 shares of Common Stock Transaction price per share: $3.33 per share Shares owned after transaction: 32,782,422 shares

3 metrics

Shares disposed 29,840 shares of Common Stock Other disposition (code J) on 2026-08-21

Transaction price per share $3.33 per share Price for the 29,840-share disposition on 2026-08-21

Shares owned after transaction 32,782,422 shares Directly owned common stock following the 2026-08-21 transaction

Key Terms

transaction code J, award agreement, tax withholding obligations

3 terms

transaction code J regulatory

"reported under transaction code J as an Other acquisition or disposition"

award agreement financial

"sold at the direction of the issuer under the terms of the issuer's award agreement"

An award agreement is a legal contract that spells out the terms of a pay or equity grant—such as stock options, restricted shares, or cash bonuses—given to an employee, director or consultant. It describes what is being granted, any conditions for keeping it (for example, earning it over time or meeting performance targets), and what happens if the person leaves or breaks rules. Investors care because these agreements affect company costs, potential share dilution and how executives are motivated and rewarded.

tax withholding obligations financial

"to cover the reporting person's tax withholding obligations is at the sole discretion"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Hyliion (HYLN) report for CEO Thomas J. Healy?

Hyliion disclosed that CEO Thomas J. Healy had 29,840 shares of common stock disposed of on 2026-08-21 at $3.33 per share under code J, with the sale directed by the issuer to cover tax withholding obligations under an award agreement.

Did Hyliion (HYLN) CEO Thomas J. Healy sell shares in the open market?

The filing states the 29,840 shares were sold at the direction of the issuer under an award agreement to cover tax withholding obligations; it does not describe a discretionary open-market sale initiated by Healy.

How many Hyliion (HYLN) shares does CEO Thomas J. Healy hold after this transaction?

After the reported transaction, Thomas J. Healy directly owns 32,782,422 shares of Hyliion common stock, as shown in the post-transaction holdings figure in the filing.

What does transaction code J mean in the Hyliion (HYLN) Form 4?

Transaction code J is reported as an “Other acquisition or disposition” of non-derivative securities. In this case, it reflects shares sold at the issuer’s direction under an award agreement to satisfy tax withholding obligations.

Was a Rule 10b5-1 trading plan used for this Hyliion (HYLN) insider transaction?

The Form 4 indicates the Rule 10b5-1 checkbox is not checked (aff_10b5_one is false), and the footnote instead describes an issuer-directed sale under an award agreement to cover tax withholding obligations.

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

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Available on EDGAR 08/25/2026 - 05:32 PM EDT Accepted by SEC EDGAR 08/25/2026 - 05:31 PM EDT 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^*

Healy Thomas J.

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/21/2026

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	08/21/2026		J(1)		29,840	D	$3.33	32,782,422	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. These shares were sold at the direction of the issuer under the terms of the issuer's award agreement with the reporting person. Under the award agreement, the decision to sell shares to cover the reporting person's tax withholding obligations is at the sole discretion of the issuer.

Remarks:

	/s/ Thomas J. Healy	08/25/2026
	** 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)