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  4. [Form 4] Hyliion Holdings Corp. Insider Trading Activity

Hyliion (NYSE: HYLN) CCO has 6,515 shares sold to cover tax obligations

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Hyliion Holdings Corp.'s Chief Commercial Officer, Ramasamy Govindaraj, had a total of 6,515 shares of common stock sold on his behalf over two days to cover tax withholding obligations tied to equity awards. The shares were sold at the issuer’s direction under an award agreement, not as discretionary market trades. Following these transactions, he directly holds 600,590 shares of Hyliion common stock.

Positive

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Negative

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Insider RAMASAMY GOVINDARAJ
Role Chief Commercial Officer
Type Security Shares Price Value
Other Common Stock 1,715 $3.92 $7K
Other Common Stock 4,800 $4.06 $19K
Holdings After Transaction: Common Stock — 600,590 shares (Direct, null)
Footnotes (1)
  1. [object Object]
Shares sold for tax withholding 6,515 shares Common stock sold over May 19–20, 2026
First-day tax-related sale 4,800 shares at $4.06 Common stock on May 19, 2026
Second-day tax-related sale 1,715 shares at $3.92 Common stock on May 20, 2026
Post-transaction holdings 600,590 shares Common stock held directly after May 20, 2026
award agreement financial
"under the terms of the issuer's award agreement with the reporting person"
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
"sell shares to cover the reporting person's tax withholding obligations"
reporting person regulatory
"the issuer's award agreement with the reporting person"
Common Stock financial
"security_title": "Common Stock""
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
RAMASAMY GOVINDARAJ
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Commercial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/19/2026J(1)4,800D$4.06602,305D
Common Stock05/20/2026J(1)1,715D$3.92600,590D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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/ Govindaraj Ramasamy05/21/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Hyliion (HYLN) report for its Chief Commercial Officer?

Hyliion reported that Chief Commercial Officer Ramasamy Govindaraj had 6,515 common shares sold on his behalf to cover tax withholding obligations under an equity award agreement, rather than through discretionary open-market trades.

How many Hyliion (HYLN) shares were sold to cover Ramasamy Govindaraj’s taxes?

A total of 6,515 Hyliion common shares were sold over two days, consisting of 4,800 shares at $4.06 and 1,715 shares at $3.92, specifically to satisfy tax withholding obligations tied to his stock awards.

Were the Hyliion (HYLN) insider share sales by Ramasamy Govindaraj discretionary?

No. The shares were sold at the direction of Hyliion under the terms of its award agreement, which states that selling shares to cover the reporting person’s tax withholding obligations is at the sole discretion of the issuer, not a discretionary market decision.

How many Hyliion (HYLN) shares does Ramasamy Govindaraj hold after these transactions?

After the tax-related sales, Ramasamy Govindaraj directly holds 600,590 shares of Hyliion common stock, as reported in the Form 4, providing context for the relative size of the tax-withholding transactions.