Richard Straube - 11 Dec 2025 Form 4 Insider Report for SOLIGENIX, INC. (SNGX)

Role: CMO (Consulting)
Signature: /s/ Richard Straube
Issuer symbol: SNGX
Transactions as of: 11 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 12 Dec 2025, 16:18:31 UTC
Previous filing: 13 Dec 2024
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Straube Richard	CMO (Consulting)	C/O SOLIGENIX, INC., 29 EMMONS DRIVE, SUITE B-10, PRINCETON	/s/ Richard Straube	12 Dec 2025	0001595197

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SNGX	Option (Right to Buy)	Award	$0	+10,000		$0.000000	10,000	11 Dec 2025	Common Stock	10,000	$1.63	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The stock option vested immediately as to 25% of the shares and vests as to the remaining 75% of the shares in 12 equal installments (or nearly equal installments if the number of remaining shares is not evenly divisible by 12) on each three (3) month anniversary of December 11, 2025.