Soligenix grants director 78,947 stock options

A Soligenix director received 78,947 stock options at a $0.38 exercise price, vesting through late 2027.

Rhea-AI Filing Summary

SOLIGENIX, INC. (SNGX) reported that director Robert J. Rubin received a grant of 78,947 stock options on September 17, 2026. The options have an exercise price of $0.38 per share, expire on September 16, 2036, and vest ratably on four dates through September 17, 2027.

Insider Trade Summary

Grant/Award: 78,947 shares

Grant/Award 1 txn

Insider RUBIN ROBERT J.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy) F1	78,947	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 78,947 contracts (Direct)

Footnotes (1)

1. F1. The stock option vests ratably on each of December 17, 2026, March 17, 2027, June 17, 2027 and September 17, 2027.

Key Figures

Options granted: 78,947 options Exercise price: $0.38 per share Underlying shares: 78,947 shares +3 more

6 metrics

Options granted 78,947 options Stock option grant to director on September 17, 2026

Exercise price $0.38 per share Conversion or exercise price of granted stock options

Underlying shares 78,947 shares Common Stock underlying the stock option grant

Post-transaction option holdings 78,947 options Total stock options held directly after the reported grant

Option expiration date September 16, 2036 Expiration of the granted stock options

Vesting dates December 17, 2026; March 17, 2027; June 17, 2027; September 17, 2027 Ratable vesting schedule for the option grant

Key Terms

Stock Option, exercise price, vesting, expiration date

4 terms

Stock Option financial

"The stock option vests ratably on each of December 17, 2026"

A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.

exercise price financial

"conversion_or_exercise_price": "0.3800""

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

vesting financial

"The stock option vests ratably on each of December 17, 2026"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

expiration date financial

"expiration_date": "2036-09-16""

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

FAQ

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

What insider transaction did SOLIGENIX, INC. (SNGX) report for Robert J. Rubin?

Robert J. Rubin, a director of SOLIGENIX, INC. (SNGX), received a grant of 78,947 stock options on September 17, 2026. These options were awarded as a grant or other acquisition and are held directly.

What is the exercise price of the new SNGX stock options granted to the director?

The granted stock options have an exercise price of $0.38 per share. This is the price at which the director may purchase Soligenix common stock upon exercising the options before expiration.

How many SNGX options does the director hold after this Form 4 transaction?

Following this transaction, the director holds 78,947 stock options related to Soligenix common stock as reported. This entire amount stems from the September 17, 2026 grant disclosed in the filing.

When do the newly granted SNGX stock options vest?

The options vest ratably on four dates: December 17, 2026, March 17, 2027, June 17, 2027 and September 17, 2027. Each date represents a portion of the total grant becoming exercisable.

What is the expiration date of the SNGX options granted to the director?

The stock options granted to the director expire on September 16, 2036. After this expiration date, any unexercised options from this grant can no longer be exercised for Soligenix common stock.

Were the SNGX option transactions made under a Rule 10b5-1 trading plan?

The filing indicates that the Rule 10b5-1 checkbox is not affirmed, meaning this grant is not reported as made under a Rule 10b5-1 trading plan based on the provided data.

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

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Available on EDGAR 09/18/2026 - 04:12 PM Accepted by SEC EDGAR 09/18/2026 - 04:12 PM 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^*

RUBIN ROBERT 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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/17/2026

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)	$0.38	09/17/2026		A		78,947		(1)	09/16/2036	Common Stock	78,947	$0	78,947	D

Explanation of Responses:

1. The stock option vests ratably on each of December 17, 2026, March 17, 2027, June 17, 2027 and September 17, 2027.

	/s/ Robert J. Rubin	09/18/2026
	** 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)