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[SCHEDULE 13G/A] SeaStar Medical Holding Corporation SEC Filing

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13G/A
Rhea-AI Filing Summary

Armistice Capital, LLC and Steven Boyd filed an amended Schedule 13G reporting collective beneficial ownership of 1,466,096 shares of SeaStar Medical Holding Corp common stock, equal to 4.99% of the class. The filing states Armistice Capital is the investment manager of Armistice Capital Master Fund Ltd., the direct holder, and that Armistice exercises voting and investment power over the Master Fund's holdings; Mr. Boyd, as managing member, is similarly reported. The submission characterizes the position as held in the ordinary course of business and not for the purpose of changing or influencing control.

Armistice Capital, LLC e Steven Boyd hanno presentato un emendamento al Schedule 13G dichiarando la detenzione collettiva di 1.466.096 azioni ordinarie di SeaStar Medical Holding Corp, pari al 4,99% della classe. Il documento precisa che Armistice Capital è il gestore degli investimenti di Armistice Capital Master Fund Ltd., il detentore diretto, e che Armistice esercita il potere di voto e di investimento sulle partecipazioni del Master Fund; lo stesso ruolo è attribuito a Mr. Boyd in qualità di membro gestionale. La comunicazione definisce la posizione come detenuta nel normale corso dell'attività e non con l'intento di modificare o influenzare il controllo.

Armistice Capital, LLC y Steven Boyd presentaron un Schedule 13G enmendado informando la propiedad beneficiosa colectiva de 1.466.096 acciones ordinarias de SeaStar Medical Holding Corp, equivalentes al 4,99% de la clase. La presentación indica que Armistice Capital es el gestor de inversiones de Armistice Capital Master Fund Ltd., el titular directo, y que Armistice ejerce el poder de voto y de inversión sobre las participaciones del Master Fund; al señor Boyd, como miembro gerente, se le atribuye una posición similar. La declaración califica la posición como mantenida en el curso normal del negocio y no con el propósito de cambiar o influir en el control.

Armistice Capital, LLC와 스티� 보이드는 수정� Schedule 13G� 제출하여 SeaStar Medical Holding Corp 보통� 1,466,096�� 집합적으� 보유하고 있음� 보고했으�, 이는 해당 클래스의 4.99%� 해당합니�. 제출서에� Armistice Capital� 직접 보유자인 Armistice Capital Master Fund Ltd.� 투자 매니저이며, Armistice가 마스� 펀� 보유분에 대� 의결� � 투자권을 행사한다� 명시되어 있습니다. 보이드는 매니� 멤버로서 유사� 권한� 보유� 것으� 보고되었습니�. 해당 포지션은 통상적인 영업 과정에서 보유� �이며 지배권 변경이� 영향력을 행사� 목적� 아님� 명시하고 있습니다.

Armistice Capital, LLC et Steven Boyd ont déposé un Schedule 13G modifié signalant une détention bénéficiaire collective de 1 466 096 actions ordinaires de SeaStar Medical Holding Corp, représentant 4,99 % de la catégorie. Le dépôt indique qu'Armistice Capital est le gestionnaire d'investissement d'Armistice Capital Master Fund Ltd., le détenteur direct, et qu'Armistice exerce le pouvoir de vote et d'investissement sur les avoirs du Master Fund ; M. Boyd, en tant que membre dirigeant, est déclaré de manière similaire. La soumission qualifie la position de détenue dans le cours normal des affaires et non dans le but de modifier ou d'influencer le contrôle.

Armistice Capital, LLC und Steven Boyd reichten eine berichtigte Schedule 13G ein und meldeten gemeinschaftliches wirtschaftliches Eigentum an 1.466.096 Aktien der Stammaktien von SeaStar Medical Holding Corp, was 4,99 % der Klasse entspricht. Die Einreichung besagt, dass Armistice Capital Investment Manager des direkt haltenden Armistice Capital Master Fund Ltd. ist und dass Armistice das Stimm- und Investitionsrecht über die Bestände des Master Funds ausübt; Herrn Boyd wird als geschäftsführendem Mitglied eine analoge Stellung zugeschrieben. In der Meldung wird die Position als im ordentlichen Geschäftsverlauf gehalten und nicht mit der Absicht, die Kontrolle zu ändern oder zu beeinflussen, bezeichnet.

Positive
  • Transparent disclosure of beneficial ownership and voting power by Armistice Capital and Steven Boyd
  • Position reported as passive and held in the ordinary course, indicating no declared intent to influence control
Negative
  • None.

Insights

TL;DR: Armistice reports a 4.99% passive stake in SeaStar Medical, disclosed under Schedule 13G as ordinary-course ownership.

The filing documents a sub-5% position, which is typically treated as non-activist and passive under SEC rules. The ownership is held through an investment fund with Armistice providing voting and investment power, meaning market participants should view this as manager-directed exposure rather than direct corporate control. There are no financing, strategic transactions, or increased ownership triggers reported that would materially change the company’s governance or capital structure.

TL;DR: This is a standard Schedule 13G/A disclosure showing manager-declared voting power for compliance and transparency; not a control event.

The statement emphasizes that the position is held in the ordinary course and not intended to influence control, fitting Schedule 13G filing criteria. The Master Fund disclaims direct beneficial ownership due to the investment management agreement, while Armistice and Mr. Boyd report shared voting and dispositive power. For governance implications, a sub-5% passive stake generally does not trigger board engagement obligations or change oversight dynamics absent further accumulation or activism.

Armistice Capital, LLC e Steven Boyd hanno presentato un emendamento al Schedule 13G dichiarando la detenzione collettiva di 1.466.096 azioni ordinarie di SeaStar Medical Holding Corp, pari al 4,99% della classe. Il documento precisa che Armistice Capital è il gestore degli investimenti di Armistice Capital Master Fund Ltd., il detentore diretto, e che Armistice esercita il potere di voto e di investimento sulle partecipazioni del Master Fund; lo stesso ruolo è attribuito a Mr. Boyd in qualità di membro gestionale. La comunicazione definisce la posizione come detenuta nel normale corso dell'attività e non con l'intento di modificare o influenzare il controllo.

Armistice Capital, LLC y Steven Boyd presentaron un Schedule 13G enmendado informando la propiedad beneficiosa colectiva de 1.466.096 acciones ordinarias de SeaStar Medical Holding Corp, equivalentes al 4,99% de la clase. La presentación indica que Armistice Capital es el gestor de inversiones de Armistice Capital Master Fund Ltd., el titular directo, y que Armistice ejerce el poder de voto y de inversión sobre las participaciones del Master Fund; al señor Boyd, como miembro gerente, se le atribuye una posición similar. La declaración califica la posición como mantenida en el curso normal del negocio y no con el propósito de cambiar o influir en el control.

Armistice Capital, LLC와 스티� 보이드는 수정� Schedule 13G� 제출하여 SeaStar Medical Holding Corp 보통� 1,466,096�� 집합적으� 보유하고 있음� 보고했으�, 이는 해당 클래스의 4.99%� 해당합니�. 제출서에� Armistice Capital� 직접 보유자인 Armistice Capital Master Fund Ltd.� 투자 매니저이며, Armistice가 마스� 펀� 보유분에 대� 의결� � 투자권을 행사한다� 명시되어 있습니다. 보이드는 매니� 멤버로서 유사� 권한� 보유� 것으� 보고되었습니�. 해당 포지션은 통상적인 영업 과정에서 보유� �이며 지배권 변경이� 영향력을 행사� 목적� 아님� 명시하고 있습니다.

Armistice Capital, LLC et Steven Boyd ont déposé un Schedule 13G modifié signalant une détention bénéficiaire collective de 1 466 096 actions ordinaires de SeaStar Medical Holding Corp, représentant 4,99 % de la catégorie. Le dépôt indique qu'Armistice Capital est le gestionnaire d'investissement d'Armistice Capital Master Fund Ltd., le détenteur direct, et qu'Armistice exerce le pouvoir de vote et d'investissement sur les avoirs du Master Fund ; M. Boyd, en tant que membre dirigeant, est déclaré de manière similaire. La soumission qualifie la position de détenue dans le cours normal des affaires et non dans le but de modifier ou d'influencer le contrôle.

Armistice Capital, LLC und Steven Boyd reichten eine berichtigte Schedule 13G ein und meldeten gemeinschaftliches wirtschaftliches Eigentum an 1.466.096 Aktien der Stammaktien von SeaStar Medical Holding Corp, was 4,99 % der Klasse entspricht. Die Einreichung besagt, dass Armistice Capital Investment Manager des direkt haltenden Armistice Capital Master Fund Ltd. ist und dass Armistice das Stimm- und Investitionsrecht über die Bestände des Master Funds ausübt; Herrn Boyd wird als geschäftsführendem Mitglied eine analoge Stellung zugeschrieben. In der Meldung wird die Position als im ordentlichen Geschäftsverlauf gehalten und nicht mit der Absicht, die Kontrolle zu ändern oder zu beeinflussen, bezeichnet.






Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)






SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G



Armistice Capital, LLC
Signature:/s/ Steven Boyd
Name/Title:Steven Boyd - Managing Member
Date:08/14/2025
Steven Boyd
Signature:/s/ Steven Boyd
Name/Title:Steven Boyd
Date:08/14/2025
Exhibit Information

JOINT FILING STATEMENT PURSUANT TO RULE 13d-1(k) The undersigned acknowledge and agree that the foregoing statement on Schedule 13G, is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G, shall be filed on behalf of each of the undersigned without the necessity of filing additional joint acquisition statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate. Dated: August 14, 2025 Armistice Capital, LLC By: /s/ Steven Boyd Steven Boyd - Managing Member Steven Boyd By: /s/ Steven Boyd

FAQ

What stake in SeaStar Medical (ICU) did Armistice Capital report?

The filing reports a collective beneficial ownership of 1,466,096 shares, representing 4.99% of SeaStar Medical's common stock.

Does the Schedule 13G/A indicate Armistice Capital intends to control SeaStar Medical?

No. The filing states the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control.

Through what vehicle does Armistice hold the shares?

The shares are directly held by Armistice Capital Master Fund Ltd. and Armistice Capital, as investment manager, reports voting and investment power over those holdings.

Who signed the Schedule 13G/A for Armistice Capital?

The filing is signed by Steven Boyd as Managing Member of Armistice Capital, LLC and also by Steven Boyd individually, dated August 14, 2025.

How many votes does Armistice report for this position?

Armistice and Steven Boyd report shared voting power for 1,466,096 shares and report 0 shares of sole voting power.
SeaStar Medical Holding Corp

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