Soligenix Oreola Donini surrenders options on 1,559 shares

The surrendered options were reported across seven tranches with exercise prices set forth for each.

Rhea-AI Filing Summary

Soligenix, Inc. (SNGX) CSO Oreola Donini voluntarily surrendered stock options exercisable for an aggregate of 1,559 common shares to the issuer for cancellation on October 12, 2026, for no consideration. The options were reported in seven tranches, including options exercisable for 83, 145 and 166 common shares.

Insider Trade Summary

Disposition: 1,559 shares

Disposition 7 txns

Insider Donini Oreola

Role CSO

Type	Security	Shares	Price	Value
Disposition	Stock Option (Right to Buy) F1	83	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	145	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	166	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	250	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	291	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	291	$0.00	$0.00
Disposition	Stock Option (Right to Buy)	333	$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 1,559 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

Shares underlying options surrendered: 1,559 shares Option tranche underlying shares: 83 shares Option tranche underlying shares: 145 shares +2 more

5 metrics

Shares underlying options surrendered 1,559 shares Aggregate amount; canceled on October 12, 2026

Option tranche underlying shares 83 shares Tranche surrendered on October 12, 2026

Option tranche underlying shares 145 shares Tranche surrendered on October 12, 2026

Option tranche underlying shares 166 shares Tranche surrendered on October 12, 2026

Option tranches reported 7 tranches Options surrendered for cancellation

Key Terms

Stock Option (Right to Buy), exercise prices, Section 16(b), Rule 16b-3(e)

4 terms

Stock Option (Right to Buy) financial

"Stock Option (Right to Buy)"

exercise prices financial

"with exercise prices set forth in the table above"

Section 16(b) regulatory

"exempt from Section 16(b) of the Exchange Act"

A federal rule that requires company insiders—like officers, directors and large shareholders—to return any profits made from buying and selling the company’s stock within a six-month window. It matters to investors because it discourages short-term trades that could exploit non-public information and helps protect outside shareholders by creating a simple, enforceable way to recover unfair gains, much like a rule stopping someone from flipping a limited-edition item for quick profit after getting early access.

Rule 16b-3(e) regulatory

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

FAQ

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

How many SNGX shares were covered by Oreola Donini's surrendered options?

CSO Oreola Donini surrendered options exercisable for an aggregate of 1,559 Soligenix common shares on October 12, 2026. The issuer canceled the options for no consideration.

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

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Available on EDGAR 10/13/2026 - 10:08 AM EDT Accepted by SEC EDGAR 10/13/2026 - 10:07 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^*

Donini Oreola

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CSO

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)	$640.8	10/12/2026		D(1)	V		83	03/31/2017	03/30/2027	Common Stock	83	$0	0	D
Stock Option (Right to Buy)	$482.4	10/12/2026		D	V		145	12/07/2017	12/06/2027	Common Stock	145	$0	0	D
Stock Option (Right to Buy)	$232.8	10/12/2026		D	V		166	12/13/2018	12/12/2028	Common Stock	166	$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)	$561.6	10/12/2026		D	V		291	12/10/2020	12/09/2030	Common Stock	291	$0	0	D
Stock Option (Right to Buy)	$187.2	10/12/2026		D	V		291	12/09/2021	12/08/2031	Common Stock	291	$0	0	D
Stock Option (Right to Buy)	$129.6	10/12/2026		D	V		333	12/08/2022	12/07/2032	Common Stock	333	$0	0	D

Explanation of Responses:

1. On October 12, 2026, the Reporting Person voluntarily surrendered stock options exercisable for an aggregate of 1,559 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/ Oreola Donini	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)