[Form 4] SeaStar Medical Holding Corporation Insider Trading Activity

Rhea-AI Filing Summary

Director John Neuman of SeaStar Medical Holding Corporation (ICU) has increased his position in the company through a significant stock purchase on June 24, 2025. The insider acquired 40,000 shares of common stock at a weighted average price of $0.3599 per share, with individual transaction prices ranging from $0.359 to $0.36.

Following this transaction, Neuman's direct ownership has increased to 80,000 shares of the company's common stock. The purchase was reported via Form 4 filing on June 28, 2025, within the required reporting timeline for insider transactions.

Key transaction details:

• Transaction type: Direct purchase of common stock
• Total transaction value: Approximately $14,396
• Position: Director
• Ownership type: Direct ownership

Positive

• Director John Neuman made a significant open market purchase of 40,000 shares at $0.3599 per share ($14,396 total), doubling his position to 80,000 shares, demonstrating insider confidence in the company

Negative

• None.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Neuman John

(Last) (First) (Middle)

C/O SEASTAR MEDICAL HOLDING CORPORATION

3513 BRIGHTON BLVD., SUITE 410

(Street)

DENVER CO 80216

(City) (State) (Zip)

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

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

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

3. Date of Earliest Transaction (Month/Day/Year)
06/24/2025

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.0001 per share	06/24/2025		P		40,000	A	$0.3599(1)	80,000	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price of $0.3599. These shares were purchased in multiple transactions at prices ranging from $0.359 to $0.36, inclusive. The reporting person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased at each separate price.

Remarks:

	/s/ David Green, as attorney-in-fact	06/26/2025
	** 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 4 (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.

FAQ

How many shares of ICU stock did Director John Neuman purchase on June 24, 2025?

Director John Neuman purchased 40,000 shares of ICU (SeaStar Medical Holding Corp) common stock on June 24, 2025.

What was the purchase price of ICU shares in Director Neuman's recent transaction?

The shares were purchased at a weighted average price of $0.3599 per share, with transactions ranging from $0.359 to $0.36 per share.

How many ICU shares does John Neuman own after his June 2025 purchase?

Following the reported transaction, John Neuman directly owns 80,000 shares of ICU common stock.

What position does John Neuman hold at ICU (SeaStar Medical)?

John Neuman serves as a Director on the board of SeaStar Medical Holding Corporation (ICU).

What was the total value of Director Neuman's ICU stock purchase in June 2025?

Based on the weighted average price of $0.3599 per share for 40,000 shares, the total value of the purchase was approximately $14,396.