---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-26-039000"
form_type: "8-K"
ticker: "TNXP"
cik: "0001430306"
company_name: "Tonix Pharmaceuticals Holding Corp."
filed_at: "2026-08-18T20:00:17+00:00"
generated_at: "2026-08-18T20:01:51.207659+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Tonix appoints CEO Seth Lederman as Interim Chief Medical Officer

## Summary
- On Aug 18, 2026, Tonix appointed Dr. Seth Lederman, age 69, as Interim Chief Medical Officer.
- Lederman remains President, CEO, and Chairman; no changes to those roles.
- No arrangements or family relationships noted in the appointment.
- Appointment effective immediately; no compensation changes disclosed.

## SEC filing metadata
- accession: 0001493152-26-039000
- form_type: 8-K
- ticker: TNXP
- cik: 0001430306
- company_name: Tonix Pharmaceuticals Holding Corp.
- filed_at: 2026-08-18T20:00:17+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02, 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1430306/000149315226039000/0001493152-26-039000-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1430306/000149315226039000/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-26-039000
- JSON: https://secwatch.observer/filing/0001493152-26-039000.json
- Plain text: https://secwatch.observer/filing/0001493152-26-039000.txt

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