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SeaStar Medical Holding Corporation reported much stronger 2025 results as it ramps commercialization of its QUELIMMUNE therapy. Net revenue rose to approximately $420 thousand in the fourth quarter from $67 thousand a year earlier, and to about $1.23 million for 2025 versus $135 thousand in 2024, reflecting a first full year of QUELIMMUNE sales and initial SCD research revenue. Quarterly net loss narrowed to roughly $2.9 million from $4.4 million, while full-year net loss improved to around $12.2 million from $24.8 million. Cash increased to $12.0 million as of December 31, 2025, compared with $1.8 million a year earlier. The company highlighted business progress, including adding top-ranked children’s hospitals to the QUELIMMUNE customer base, completing enrollment in the QUELIMMUNE SAVE pediatric post-marketing registry, surpassing the 50% enrollment milestone in the NEUTRALIZE-AKI pivotal trial in adults with acute kidney injury, and initiating a cardio-renal clinical trial using its Selective Cytopheretic Device therapy.
SeaStar Medical Holding Corp received an updated ownership report from investors Mitchell P. Kopin, Daniel B. Asher and Intracoastal Capital LLC. As of December 31, 2025, they report beneficial ownership of 3,980,665 shares of common stock, equal to 9.99% of the class.
The position is entirely through six warrants held by Intracoastal. Three warrants are counted, while three additional warrants are contractually blocked from exercise above 9.99% or 4.99% ownership caps. Without these blocker provisions, their beneficial ownership would be 5,342,845 shares. The group states the holdings are not for changing or influencing control of SeaStar Medical.
SeaStar Medical Holding Corp director Kenneth Van Heel reported receiving a grant of restricted stock units (RSUs) under the company’s equity program. On February 6, 2026, he acquired 3,000 shares of common stock at a price of $0 as an award.
According to the filing, these RSUs will vest in full on February 6, 2027, meaning the shares become fully owned on that date if vesting conditions are met. After this grant, Van Heel beneficially owns 7,940 shares of SeaStar Medical common stock directly.
SeaStar Medical Holding Corp director John Neuman reported a stock-based award. On February 6, 2026, he received 3,000 shares of common stock at a stated price of $0, reported as an acquired transaction.
After this grant, Neuman beneficially owns 12,200 shares of SeaStar Medical common stock in direct form. The filing notes that the 3,000-share award represents restricted stock units (RSUs) that will vest in full on February 6, 2027.
SeaStar Medical Holding Corp director Vincent Bernadette N reported receiving 3,000 shares of common stock on February 6, 2026 under transaction code A, indicating an acquisition. The filing notes this represents a restricted stock unit (RSU) award that will vest in full on February 6, 2027. The shares were acquired at a stated price of $0 per share, leaving the director with 4,200 shares of beneficially owned common stock held directly after the grant.
SeaStar Medical Holding Corp executive Towne Bradford K reported receiving 7,500 shares of common stock as a stock-based award. The shares, reported at a price of $0 per share, increased the executive's directly held stake to 9,050 shares.
The award is in the form of restricted stock units that vest in three equal installments on the first, second and third anniversaries of February 6, 2026. Towne Bradford K serves as the company's Principal Accounting Officer.
SeaStar Medical Holding Corp’s Chief Medical Officer Kevin Chung reported receiving 15,000 shares of common stock as a restricted stock unit (RSU) award on February 6, 2026. The RSUs vest in equal installments on the first, second, and third anniversaries of that date. After this grant, Chung beneficially owned 20,819 shares directly.
SeaStar Medical Holding Corp disclosed that its Chief Executive Officer, Eric Schlorff, received an award of 30,000 shares of common stock in the form of restricted stock units on February 6, 2026, at a grant price of $0 per share.
The RSU award vests in three equal installments on the first, second and third anniversaries of February 6, 2026. Following this grant, Schlorff beneficially owned 39,852 shares of SeaStar Medical common stock, held directly.