---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-067649"
form_type: "8-K"
ticker: "SNGX"
cik: "0000812796"
company_name: "SOLIGENIX, INC."
filed_at: "2026-05-28T21:21:17+00:00"
generated_at: "2026-05-28T21:24:16.438263+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Soligenix increases at-market offering by $2.96M, total now up to $6.4M

## Summary
- Filed prospectus supplement on May 28, 2026, increasing shares issuable under Sales Agreement with Rodman & Renshaw by $2,956,000.
- Prior sales under the agreement totaled approximately $3,445,000; combined maximum now $6,401,000.
- Common stock (SNGX) offered on Nasdaq; legal opinion from Duane Morris LLP filed as Exhibit 5.1.

## SEC filing metadata
- accession: 0001104659-26-067649
- form_type: 8-K
- ticker: SNGX
- cik: 0000812796
- company_name: SOLIGENIX, INC.
- filed_at: 2026-05-28T21:21:17+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/812796/000110465926067649/0001104659-26-067649-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/812796/000110465926067649/sngx-20260528x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-067649
- JSON: https://secwatch.observer/filing/0001104659-26-067649.json
- Plain text: https://secwatch.observer/filing/0001104659-26-067649.txt

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