Adagio Medical (ADGM) director discloses zero beneficial ownership on Form 3

Rhea-AI Filing Summary

Adagio Medical Holdings, Inc. filed an initial insider ownership report for a director effective 12/11/2025. The filing shows that the reporting person is a director of the company and that no securities are beneficially owned in either non-derivative or derivative form. The remarks section notes Exhibit 24.1 as a power of attorney, under which Deborah Kaster signs as attorney-in-fact for the reporting person.

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

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1. Name and Address of Reporting Person^*

Salmon Sean

(Last) (First) (Middle)

C/O ADAGIO MEDICAL HOLDINGS, INC.

26051 MERIT CIRCLE, SUITE 102

(Street)

LAGUNA HILLS CA 92653

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
12/11/2025

3. Issuer Name and Ticker or Trading Symbol
Adagio Medical Holdings, Inc. [ ADGM ]

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

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

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)

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:

Remarks:

Exhibit 24.1 - Power of Attorney.

No securities are beneficially owned.

	/s/ Deborah Kaster, Attorney-in-Fact	12/11/2025
	** 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.

FAQ

What did Adagio Medical Holdings, Inc. (ADGM) report in this insider filing?

Adagio Medical Holdings, Inc. reported an initial statement of beneficial ownership for a director, indicating that the reporting person currently has no beneficial ownership of the company’s securities.

What is the relationship of the reporting person to Adagio Medical (ADGM)?

The reporting person is identified as a Director of Adagio Medical Holdings, Inc., as indicated in the relationship section of the filing.

How many Adagio Medical (ADGM) securities does the director beneficially own?

The filing states in the remarks that no securities are beneficially owned by the reporting person, covering both non-derivative and derivative securities tables.

What is the event date referenced in this Adagio Medical (ADGM) Form 3 filing?

The date of the event requiring the statement is listed as 12/11/2025.

Why is a power of attorney mentioned in this Adagio Medical (ADGM) insider report?

The remarks note Exhibit 24.1 - Power of Attorney, and the signature block shows that the form was signed by Deborah Kaster, Attorney-in-Fact, indicating she is authorized to sign on behalf of the reporting person.