---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-033946"
form_type: "8-K"
ticker: "CERO"
cik: "0001870404"
company_name: "CERO THERAPEUTICS HOLDINGS, INC."
filed_at: "2025-04-22T23:59:59+00:00"
generated_at: "2026-05-23T09:36:11.439425+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# CERo raises up to $8M in Series D convertible; believes meets Nasdaq equity requirement

## Summary
- Closed initial $5M of up to $8M Series D convertible preferred; conversion price $0.78, floor $0.156.
- Believes meets $2.5M stockholders' equity after placement, prior $2.3M equity line & $4.1M Feb offering; delisting risk remains.
- Series D ranks senior to Series A & B, pari passu with Series C; 25% redemption premium on bankruptcy or company optional redemption.
- Proceeds to fund IND allowances, MDACC site activation, and extend cash runway, per press release.

## SEC filing metadata
- accession: 0001213900-25-033946
- form_type: 8-K
- ticker: CERO
- cik: 0001870404
- company_name: CERO THERAPEUTICS HOLDINGS, INC.
- filed_at: 2025-04-22T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1870404/000121390025033946/0001213900-25-033946-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1870404/000121390025033946/ea0238925-8k_cerotherap.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-033946
- JSON: https://secwatch.observer/filing/0001213900-25-033946.json
- Plain text: https://secwatch.observer/filing/0001213900-25-033946.txt

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