SeaStar Medical Holding Corp (ICU) CFO discloses 3,000-share ownership

Rhea-AI Filing Summary

SeaStar Medical Holding Corp reported an initial insider ownership filing for its Chief Financial Officer, Michael Messinger. The report shows he beneficially owns 3,000 shares of common stock, held directly, as of 11/14/2025. This documents the equity stake of a key executive and does not describe any specific stock transactions.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Messinger Michael

Role Chief Financial Officer

Type	Security	Shares	Price	Value
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 3,000 shares (Direct)

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Accepted by SEC EDGAR 12/08/2025 - 04:50 PM Learn about SEC filing dates

FAQ

What insider ownership did SeaStar Medical (ICU) disclose in this report?

The report shows that Chief Financial Officer Michael Messinger beneficially owns 3,000 shares of SeaStar Medical Holding Corp common stock.

Who is the reporting person in the latest SeaStar Medical (ICU) insider filing?

The reporting person is Michael Messinger, who serves as Chief Financial Officer of SeaStar Medical Holding Corp.

How are the SeaStar Medical (ICU) shares held by the CFO classified?

The 3,000 common shares reported by the CFO are held with direct (D) ownership.

What is the date of the event covered by this SeaStar Medical (ICU) insider report?

The event requiring the statement is dated 11/14/2025.

Under which regulation was this SeaStar Medical (ICU) insider report filed?

It was filed pursuant to Section 16(a) of the Securities Exchange Act of 1934.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Messinger Michael

(Last) (First) (Middle)

3513 BRIGHTON BLVD

SUITE 410

(Street)

DENVER C0 80216

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
11/14/2025

3. Issuer Name and Ticker or Trading Symbol
SeaStar Medical Holding Corp [ ICU ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	3,000	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Michael Messinger	12/05/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.