---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-105906"
form_type: "8-K"
ticker: "ICU"
cik: "0001831868"
company_name: "SeaStar Medical Holding Corp"
filed_at: "2025-08-08T23:59:59+00:00"
generated_at: "2026-05-17T16:46:22.449129+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# SeaStar Medical resumes ATM offering for up to $2.17M in common stock

## Summary
- Company had sold $6.8M under ATM prior to suspension on July 10, 2025.
- Resumes sales under ATM agreement for aggregate offering price up to $2,166,305.
- Shares offered via existing shelf registration statement (Form S-3, effective Dec 22, 2023).
- No minimum offering amount; proceeds for general corporate purposes.
- Counsel's opinion on validity of shares filed as Exhibit 5.1.

## SEC filing metadata
- accession: 0000950170-25-105906
- form_type: 8-K
- ticker: ICU
- cik: 0001831868
- company_name: SeaStar Medical Holding Corp
- filed_at: 2025-08-08T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1831868/000095017025105906/0000950170-25-105906-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1831868/000095017025105906/icu-20250808.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-105906
- JSON: https://secwatch.observer/filing/0000950170-25-105906.json
- Plain text: https://secwatch.observer/filing/0000950170-25-105906.txt

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