---
schema_version: "secwatch.filing_event.v1"
accession: "0001641172-25-011633"
form_type: "8-K"
ticker: "PTIX"
cik: "0001022899"
company_name: "Protagenic Therapeutics, Inc.new"
filed_at: "2025-05-20T23:59:59+00:00"
generated_at: "2026-05-20T23:28:27.355051+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Protagenic Therapeutics exchanges 459,420 warrants for 367,544 shares at 0.8 ratio

## Summary
- Warrant Exchange Agreement with unaffiliated holder to cancel 459,420 warrants for 367,544 common shares.
- Exchange relies on Section 3(a)(9) exemption; shares issued without restrictive legends.
- Transaction to be completed within six months of May 20, 2025.
- Net reduction of 91,876 potential shares outstanding compared to exercise of warrants.

## SEC filing metadata
- accession: 0001641172-25-011633
- form_type: 8-K
- ticker: PTIX
- cik: 0001022899
- company_name: Protagenic Therapeutics, Inc.new
- filed_at: 2025-05-20T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 1.01, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1022899/000164117225011633/0001641172-25-011633-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1022899/000164117225011633/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001641172-25-011633
- JSON: https://secwatch.observer/filing/0001641172-25-011633.json
- Plain text: https://secwatch.observer/filing/0001641172-25-011633.txt

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