Soligenix CEO surrenders options for 2,832 shares

Soligenix, Inc. (SNGX) reports that Chairman, CEO and President Christopher J. Schaber surrendered stock options exercisable for an aggregate of 2,832 common shares to the company for cancellation on October 12, 2026, for no consideration.

Rhea-AI Filing Summary

Soligenix, Inc. (SNGX) reports that Chairman, CEO and President Christopher J. Schaber surrendered stock options exercisable for an aggregate of 2,832 common shares to the company for cancellation on October 12, 2026, for no consideration. The surrendered options had exercise prices ranging from $129.60 to $561.60 per share.

Insider Trade Summary

Disposition: 2,832 shares

Disposition 11 txns

Insider SCHABER CHRISTOPHER J

Role CHAIRMAN, CEO AND PRESIDENT

Type	Security	Shares	Price	Value
Disposition	Stock Option (Right to Buy) F1	250	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	250	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	250	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	250	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	250	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	250	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	250	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	250	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	52	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	197	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	583	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 0 contracts (Direct)

Footnotes (1)

1. F1. On October 12, 2026, the Reporting Person voluntarily surrendered stock options exercisable for an aggregate of 2,832 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.

Key Figures

Options surrendered for cancellation: Options exercisable for 2,832 common shares Exercise price: $129.60 per share Exercise price: $165.60 per share +2 more

5 metrics

Options surrendered for cancellation Options exercisable for 2,832 common shares October 12, 2026; canceled for no consideration

Exercise price $129.60 per share Options covering 583 common shares surrendered October 12, 2026

Exercise price $165.60 per share Options covering 197 common shares surrendered October 12, 2026

Exercise price $482.40 per share Options covering 250 common shares surrendered October 12, 2026

Exercise price $561.60 per share Options covering 250 common shares surrendered October 12, 2026

Key Terms

exercise prices, Rule 16b-3(e), Rule 16b-6(d), Rule 16a-4(d)

4 terms

exercise prices financial

"with exercise prices set forth in the table above"

Rule 16b-3(e) regulatory

"pursuant to Rule 16b-3(e) and Rule 16b-6(d)"

Rule 16b-6(d) regulatory

"pursuant to Rule 16b-3(e) and Rule 16b-6(d)"

Rule 16a-4(d) regulatory

"pursuant to Rule 16a-4(d)"

FAQ

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

How many shares' worth of options did SNGX's CEO surrender?

Christopher J. Schaber, Soligenix's Chairman, CEO and President, surrendered options exercisable for an aggregate of 2,832 common shares to the company for cancellation on October 12, 2026, for no consideration.

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

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Available on EDGAR 10/13/2026 - 10:06 AM EDT Accepted by SEC EDGAR 10/13/2026 - 10:06 AM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

SCHABER CHRISTOPHER J

(Last) (First) (Middle)

C/O SOLIGENIX, INC.

29 EMMONS DRIVE, SUITE B-10

(Street)

PRINCETON NEW JERSEY 08540

(City) (State) (Zip)

UNITED STATES

(Country)

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
X	Officer (give title below)		Other (specify below)
	CHAIRMAN, CEO AND PRESIDENT

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/12/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$482.4	10/12/2026		D(1)	V		250	12/07/2017	12/06/2027	Common Stock	250	$0	0	D
Stock Option (Right to Buy)	$232.8	10/12/2026		D	V		250	12/13/2018	12/12/2028	Common Stock	250	$0	0	D
Stock Option (Right to Buy)	$230.4	10/12/2026		D	V		250	01/02/2019	01/01/2029	Common Stock	250	$0	0	D
Stock Option (Right to Buy)	$297.6	10/12/2026		D	V		250	12/12/2019	12/11/2029	Common Stock	250	$0	0	D
Stock Option (Right to Buy)	$348	10/12/2026		D	V		250	01/02/2020	01/01/2030	Common Stock	250	$0	0	D
Stock Option (Right to Buy)	$561.6	10/12/2026		D	V		250	12/10/2020	12/09/2030	Common Stock	250	$0	0	D
Stock Option (Right to Buy)	$307.2	10/12/2026		D	V		250	01/04/2021	01/03/2031	Common Stock	250	$0	0	D
Stock Option (Right to Buy)	$187.2	10/12/2026		D	V		250	12/09/2021	12/08/2031	Common Stock	250	$0	0	D
Stock Option (Right to Buy)	$165.6	10/12/2026		D	V		52	01/03/2022	01/02/2032	Common Stock	52	$0	0	D
Stock Option (Right to Buy)	$165.6	10/12/2026		D	V		197	01/21/2022	01/02/2032	Common Stock	197	$0	0	D
Stock Option (Right to Buy)	$129.6	10/12/2026		D	V		583	12/08/2022	12/07/2032	Common Stock	583	$0	0	D

Explanation of Responses:

1. On October 12, 2026, the Reporting Person voluntarily surrendered stock options exercisable for an aggregate of 2,832 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.

	/s/ Christopher J. Schaber	10/12/2026
	** Signature of Reporting Person	Date
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)