Hyunsu Jung - 29 Dec 2025 Form 4 Insider Report for HYPERION DEFI, INC. (EYEN)

Role: Interim Chief Executive Officer and Chief Investment Officer, Director
Signature: /s/ Hyunsu Jung
Issuer symbol: EYEN
Transactions as of: 29 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 30 Dec 2025, 16:00:22 UTC
Previous filing: 20 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Jung Hyunsu	Interim Chief Executive Officer and Chief Investment Officer, Director	C/O HYPERION DEFI, INC., 23461 SOUTH POINT DRIVE, SUITE 390, LAGUNA HILLS	/s/ Hyunsu Jung	30 Dec 2025	0002075658

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	HYPD	Common Stock, par value $0.0001	Tax liability	$0	-82,324	-5.5%	$0.000000	1,417,676	29 Dec 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares were withheld to satisfy tax withholding obligations incurred upon the vesting and settlement of a portion of a previously reported grant of restricted stock units held by the Reporting Person.

Remarks:

Interim Chief Executive Officer and Chief Investment Officer