---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-121246"
form_type: "8-K"
ticker: "TOVX"
cik: "0000894158"
company_name: "Theriva Biologics, Inc."
filed_at: "2025-12-15T23:59:59+00:00"
generated_at: "2026-05-16T13:18:43.934012+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Theriva Biologics special meeting fails due to lack of quorum; new meeting to be called

## Summary
- Special Meeting of Stockholders convened Dec. 15, 2025 lacked sufficient shares for quorum.
- Company will call a new special meeting to seek stockholder approval for warrant exercise proposal.
- Under Oct. 16, 2025 Inducement Agreement, company must hold meetings every 60 days until approval or warrants lapse.
- Approval sought for issuance of up to 16,184,560 shares of common stock upon exercise of New Warrants.
- Company will file and mail proxy materials for the new meeting, date and time to be announced.

## SEC filing metadata
- accession: 0001104659-25-121246
- form_type: 8-K
- ticker: TOVX
- cik: 0000894158
- company_name: Theriva Biologics, Inc.
- filed_at: 2025-12-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/894158/000110465925121246/0001104659-25-121246-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/894158/000110465925121246/tm2533572d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-121246
- JSON: https://secwatch.observer/filing/0001104659-25-121246.json
- Plain text: https://secwatch.observer/filing/0001104659-25-121246.txt

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