---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-23-001056"
form_type: "8-K"
ticker: "SNGX"
cik: "0000812796"
company_name: "SOLIGENIX, INC."
filed_at: "2023-02-09T23:59:59+00:00"
generated_at: "2026-06-19T21:10:58.993393+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Soligenix to effect 1-for-15 reverse stock split, effective Feb 9, 2023

## Summary
- Stockholders approved reverse split (range 1:2 to 1:20) at Feb 8 special meeting; board set ratio at 1:15.
- Outstanding shares reduce from ~43.3M to ~2.9M; fractional shares rounded up; par value unchanged.
- Trading symbol SNGX unchanged; split-adjusted trading begins Feb 10 on Nasdaq; new CUSIP 834223505.
- Proportional adjustments made to exercise prices and shares issuable upon exercise of options and warrants.

## SEC filing metadata
- accession: 0001558370-23-001056
- form_type: 8-K
- ticker: SNGX
- cik: 0000812796
- company_name: SOLIGENIX, INC.
- filed_at: 2023-02-09T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 3.03, 5.03, 5.02, 5.07, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/812796/000155837023001056/0001558370-23-001056-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/812796/000155837023001056/tmb-20230208x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-23-001056
- JSON: https://secwatch.observer/filing/0001558370-23-001056.json
- Plain text: https://secwatch.observer/filing/0001558370-23-001056.txt

## Key facts
- Governance Changes
  SOLIGENIX, INC.: Filed Certificate of Amendment to Second Amended and Restated Certificate of Incorporation to effect a 1-for-15 reverse stock split, effective 4:00 p.m. EST on February 9, 2023 (effective 2023-02-09).
  - Change: charter amendment
  - Effective: 2023-02-09
  source text: On February 8, 2023, Soligenix, Inc. (the “Company”) filed a Certificate of Amendment to Second Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of State of Delaware to effect a 1-for-15 reverse stock split of the shares of the Company’s common stock, par value $0.001 per share (the “Common Stock”), issued and outstanding, effective as of 4:00 p.m. EST on February 9, 2023 (the “Reverse Stock Split”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/812796/000155837023001056/0001558370-23-001056-index.htm
- Shareholder Votes
  SOLIGENIX, INC. shareholders approved To approve an amendment to the Company’s Second Amended and Restated Certificate of Incorporation, as amended, to effect a reverse stock split at a ratio of 1-for-2 to 1-for-20 at the 2023-02-08 meeting.
  - Proposal: reverse split
  - Outcome: passed
  - Meeting: 2023-02-08
  source text: The Reverse Stock Split Proposal was approved by votes as follows: For Against Abstain 18,575,861,304 2,957,497,543 591,043,453
  evidence_url: https://www.sec.gov/Archives/edgar/data/812796/000155837023001056/0001558370-23-001056-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.