Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * ZELDIS JEROME B 2. Issuer Name and Ticker or Trading Symbol SOLIGENIX, INC. [SNGX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O SOLIGENIX, INC., 29 EMMONS DRIVE, SUITE B-10 3. Date of Earliest Transaction (Month/Day/Year) 10/12/2026 (Street) PRINCETON, NJ 08540 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities (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 of Derivative Security: 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

Stock Option (Right to Buy)

$549.6

10/12/2026

D(1)

V

54

06/08/2017

06/07/2027

Common Stock

54

$ 0

0

D

Stock Option (Right to Buy)

$400.8

10/12/2026

D

V

74

09/27/2018

09/26/2028

Common Stock

74

$ 0

0

D

Stock Option (Right to Buy)

$232.8

10/12/2026

D

V

128

09/06/2019

09/05/2029

Common Stock

128

$ 0

0

D

Stock Option (Right to Buy)

$472.8

10/12/2026

D

V

63

09/16/2020

09/15/2030

Common Stock

63

$ 0

0

D

Stock Option (Right to Buy)

$247.2

10/12/2026

D

V

121

09/23/2021

09/22/2031

Common Stock

121

$ 0

0

D

Stock Option (Right to Buy)

$156

10/12/2026

D

V

192

11/17/2022

11/16/2032

Common Stock

192

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ZELDIS JEROME B C/O SOLIGENIX, INC. 29 EMMONS DRIVE, SUITE B-10 PRINCETON, NJ 08540	X

Signatures

/s/ Jerome B. Zeldis		10/12/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	On October 12, 2026, the Reporting Person voluntarily surrendered stock options exercisable for an aggregate of 632 shares of Common Stock with exercise prices set forth in the table above to the Issuer for cancellation for no consideration. The cancellation is exempt from Section 16(b) of the Exchange Act pursuant to Rule 16b-3(e) and Rule 16b-6(d), and exempt from the reporting requirements of Section 16(a) pursuant to Rule 16a-4(d). The Reporting Person is voluntarily reporting this transaction.
Remarks: That Reporting Person's Form 4 filed on September 18, 2026 reported an expiration date of June 16, 2036 for the Stock Option (Right to Buy) covering 78,947 shares of Common Stock at an exercise price of $0.38 per share, granted on September 17, 2026. That date was a typographical error. The correct expiration date of the option is September 16, 2036.

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