---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-123912"
form_type: "8-K"
ticker: "CERO"
cik: "0001870404"
company_name: "CERO THERAPEUTICS HOLDINGS, INC."
filed_at: "2025-12-19T23:59:59+00:00"
generated_at: "2026-05-16T12:38:06.772103+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# CERO stockholders approve reverse stock split (1:40–1:150) and 32M share increase to equity plan

## Summary
- Reverse stock split ratio set by board at not less than 1:40 or more than 1:150; approved with 8,012,563 for, 2,287,082 against.
- Issuance of common shares upon conversion of Series E preferred (Oct 2025 PIPE) approved; 3,304,540 for, 1,422,195 against.
- Equity incentive plan share reserve increased by 32,000,000 shares to 32,123,494 total; approved with 2,568,408 for.
- Quorum was 10,988,347 shares (52.82% of 20,802,671 outstanding) at the Dec 19, 2025 special meeting.

## SEC filing metadata
- accession: 0001213900-25-123912
- form_type: 8-K
- ticker: CERO
- cik: 0001870404
- company_name: CERO THERAPEUTICS HOLDINGS, INC.
- filed_at: 2025-12-19T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1870404/000121390025123912/0001213900-25-123912-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1870404/000121390025123912/ea0270420-8k_cero.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-123912
- JSON: https://secwatch.observer/filing/0001213900-25-123912.json
- Plain text: https://secwatch.observer/filing/0001213900-25-123912.txt

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