SeaStar Medical (ICU)
Builds extracorporeal immunomodulation cartridges for acute kidney injury care.
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Sells a pediatric extracorporeal immunomodulation cartridge to US hospitals for a narrowly labeled sepsis-related acute kidney injury use. Revenue comes from direct product sales, while the broader adult SCD platform remains tied to pivotal clinical data, FDA review, and the CRRT treatment workflow.
Develops extracorporeal immunomodulation therapies around its Selective Cytopheretic Device, which binds, calms, and releases highly activated neutrophils and monocytes within a renal-replacement-therapy circuit. Its commercial product, pediatric QUELIMMUNE, is a single-use cartridge/tubing therapy for a narrow FDA-approved group of critically ill patients with sepsis-related acute kidney injury who require renal replacement therapy.
Sells QUELIMMUNE directly to US hospitals and executes post-approval evidence collection through the SAVE registry. The adult SCD remains in a pivotal trial alongside CRRT, so its commercial entry depends on clinical results and regulatory approval. All sales are US-only, while cartridge supply, CRRT pumps, regional citrate anticoagulation, calcium-replacement solutions, hospital workflows, coverage, and reimbursement shape use of the platform.
Company facts
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No analyst consensus on record.
EPSReportedEstimate
RevenueReportedEstimate
Balance sheet, Jun 30, 2026Cash & short-term investments $7.0M · Total debt $0 · Total assets $8.6M · Shareholders' equity $4.3M
- Revenue
- $615.0K
- Operating income
- −$3.8M
- Net income
- −$3.7M
No dividends on record.
| Institutions17 holders · as of Mar 31, 2026 | 2.99% | 131.6K shares | |
| Insiders10 holders · as of Aug 19, 2026 | 13.18% | 581.0K shares | |
| Otherremainder | 83.83% | 3.69M shares |
4.41M company shares as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing
Two share counts disagree (4.41M in the company's Sep 3, 2026 report, 2.84M elsewhere); stakes use the report.
A stock split fell inside the quarter, so quarter-on-quarter changes are not shown.
Top shareholders13F · 13D/G · Form 4
| Holder | Stake | Shares | Evidence |
|---|---|---|---|
Mitchell P. KopinInsider | 10.06% | 443,253 | 13Gfiled May 13, 2026 ↗ |
Opportunity Master Fund, SPC – Segregated Master Portfolio BInstitution | 6.32% | 278,436 | 13Gfiled May 11, 2026 ↗ |
Geode Capital Management, LLCInstitution | 1.26% | 55,642 | 13Fas of Mar 31, 2026 |
Eric SchlorffInsiderofficer: Chief Executive Officer | 1.14% | 50,140 | Form 4filed Jul 2, 2026 ↗ |
Vanguard Capital Management LLCInstitution | 0.65% | 28,791 | 13Fas of Mar 31, 2026 |
| See all 25 → | |||
13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report
Insider tradesForm 4
| Date | Insider | Role | Shares | Avg price |
|---|---|---|---|---|
| Aug 18, 2026 | Michael Messinger | officer: Chief Financial Officer | +750 | $3.27 |
| Dec 19, 2025 | Jennifer A. Baird | director | +4,200 | $0.2351 |
| Dec 9, 2025 | Michael Messinger | officer: Chief Financial Officer | +14,500 | $0.3516 |
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- Nuwellis
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Compare
| Company | Price | Change | |||||
|---|---|---|---|---|---|---|---|
| SeaStar Medical | $2.90 | −2.87% | $8.2M | — | — | 4.8 | +82.0% |
| CytoSorbents | $0.3400 | −11.83% | $24.1M | — | — | 0.6 | +0.2% |
| Fresenius Medical Care (ADR) | $22.44 | −0.97% | $12.17B | 11.7 | 16.4 | 0.5 | −0.7% |
| Nuwellis | $0.7300 | −0.40% | $68.1K | — | — | 0.0 | +14.1% |
| Median | 11.7 | 16.4 | 0.5 | +0.2% |