---
schema_version: "secwatch.filing_event.v1"
accession: "0001683168-24-004619"
form_type: "8-K"
ticker: "PHIO"
cik: "0001533040"
company_name: "Phio Pharmaceuticals Corp."
filed_at: "2024-07-02T23:59:59+00:00"
generated_at: "2026-05-31T23:45:46.151376+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Phio Pharmaceuticals implements 1-for-9 reverse stock split effective July 5, 2024

## Summary
- Reverse split ratio set at 1-for-9; reduces outstanding shares from ~4.6M to ~0.5M.
- Split effective 12:01 a.m. ET on July 5, 2024; trading symbol remains PHIO.
- Adopted to meet Nasdaq minimum $1.00 bid price requirement for continued listing.
- No fractional shares issued; cash payment in lieu for fractional holdings.
- CUSIP changed to 71880W501; transfer agent Computershare managing exchange.

## SEC filing metadata
- accession: 0001683168-24-004619
- form_type: 8-K
- ticker: PHIO
- cik: 0001533040
- company_name: Phio Pharmaceuticals Corp.
- filed_at: 2024-07-02T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 3.03, 5.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1533040/000168316824004619/0001683168-24-004619-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1533040/000168316824004619/phio_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001683168-24-004619
- JSON: https://secwatch.observer/filing/0001683168-24-004619.json
- Plain text: https://secwatch.observer/filing/0001683168-24-004619.txt

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