Hyliion insider plans sale of 220,000 shares under Rule 144

Hyliion Holdings Corp. reported that an affiliated holder plans to sell 220,000 shares of its common stock through UBS Financial Services Inc., with an aggregate market value of $432,000, on or about 12/12/2025 on the NYSE.

Accepted by SEC EDGAR 12/12/2025 - 03:50 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Hyliion Holdings Corp. reported that an affiliated holder plans to sell 220,000 shares of its common stock through UBS Financial Services Inc., with an aggregate market value of $432,000, on or about 12/12/2025 on the NYSE. The filing notes that Hyliion common stock outstanding was 175,400,000 shares.

The shares to be sold were acquired on 12/12/2025 in an employee benefit transaction from Hyliion Holdings Corp., with cash listed as the form of payment. The disclosure also records that Thomas Healy sold 159,776 common shares on 11/17/2025 for gross proceeds of $265,300 during the prior three months.

FAQ

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

What does the Form 144 filing for Hyliion (HYLN) disclose?

The notice states that an affiliated holder of Hyliion Holdings Corp. plans to sell 220,000 shares of Hyliion common stock, with an aggregate market value of $432,000, on or about 12/12/2025 on the NYSE.

How many Hyliion (HYLN) shares are outstanding according to the filing?

The disclosure lists 175,400,000 shares of Hyliion common stock as outstanding, providing a baseline for understanding the relative size of the planned sale.

Who is involved in the recent Hyliion (HYLN) share sales and planned sale?

The filing shows a planned sale of 220,000 common shares held by an affiliated person, and it records that Thomas Healy sold 159,776 common shares on 11/17/2025.

What were the terms of the Hyliion (HYLN) shares to be sold under this notice?

The 220,000 common shares were acquired on 12/12/2025 in an employee benefit transaction from Hyliion Holdings Corp., with the form of payment identified as cash.

What prior Hyliion (HYLN) stock sales are disclosed in the last three months?

The document reports that 159,776 Hyliion common shares were sold by Thomas Healy on 11/17/2025, generating gross proceeds of $265,300.

Which broker and exchange are associated with the planned Hyliion (HYLN) share sale?

The planned sale of 220,000 common shares is listed through UBS Financial Services Inc., with the securities to be sold on the NYSE.

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

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001825486
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Hyliion Holdings Corp
SEC File Number	001-38823
Address of Issuer	1202 BMC Dr. Suite 100 Cedar Park TEXAS 78613
Phone	8334954466
Name of Person for Whose Account the Securities are To Be Sold	Thomas Healy
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	UBS Financial Services Inc 1000 Harbor Blvd 3rd Floor Weehawken NJ 07086	220000	432000	175400000	12/12/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
common	12/12/2025	Employee Benefit	Hyliion Holdings Corp.			220000	12/12/2025	cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Thomas Healy 1202 BMC Dr. Suite 100 Cedar Park TX 78613	common	11/17/2025	159776	265300

144: Remarks and Signature

Remarks
Date of Notice	12/12/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/JOSEPH CASSIDY, for UBS Financial Services Inc, as attorney-in-fact for Thomas Healy
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)