Key facts
- This page summarizes Robert J. Rubin's Form 4 filing for SOLIGENIX, INC. (SNGX).
- 6 reported transactions and 6 derivative rows are listed below.
- Accepted by SEC: 13 Oct 2026, 10:09.
Robert J. Rubin - 12 Oct 2026 Form 4 Insider Report for SOLIGENIX, INC. (SNGX)
- Reporting relationship
- Director
- Issuer ticker
- SNGX
- Reported as of
- 12 Oct 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 13 Oct 2026, 10:09:21 UTC
- Prior SEC filing
- 18 Sep 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Robert J. Rubin
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Robert J. Rubin filed Form 4 for SOLIGENIX, INC. (SNGX) on 13 Oct 2026.
Change
- Previous filing in this sequence was filed on 18 Sep 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001413631
Primary reporting owner
RUBIN ROBERT J.
- Relationship
- Director
- Address
- C/O SOLIGENIX, INC., 29 EMMONS DRIVE, SUITE B-10, PRINCETON
- Signature
- /s/ Robert J. Rubin
- Signature date
- 12 Oct 2026
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
SNGX
transaction
Derivative
Stock Option (Right to Buy)
Disposed to Issuer
- Transaction value
- Shares
- -54
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 12 Oct 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 54
- Exercise price
- $549.60
- Footnotes
- F1
SNGX
transaction
Derivative
Stock Option (Right to Buy)
Disposed to Issuer
- Transaction value
- Shares
- -74
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 12 Oct 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 74
- Exercise price
- $400.80
SNGX
transaction
Derivative
Stock Option (Right to Buy)
Disposed to Issuer
- Transaction value
- Shares
- -128
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 12 Oct 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 128
- Exercise price
- $232.80
SNGX
transaction
Derivative
Stock Option (Right to Buy)
Disposed to Issuer
- Transaction value
- Shares
- -63
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 12 Oct 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 63
- Exercise price
- $472.80
SNGX
transaction
Derivative
Stock Option (Right to Buy)
Disposed to Issuer
- Transaction value
- Shares
- -121
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 12 Oct 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 121
- Exercise price
- $247.20
SNGX
transaction
Derivative
Stock Option (Right to Buy)
Disposed to Issuer
- Transaction value
- Shares
- -192
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 12 Oct 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 192
- Exercise price
- $156.00
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote F1
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.