SEC FORM 3

SEC FORM 3 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^*

Semler Adam

(Last)

(First)

(Middle)

C/O LEGATO MERGER CORP. IV

777 THIRD AVENUE

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/22/2026

3. Issuer Name and Ticker or Trading Symbol
Legato Merger Corp. IV [ LEGO ]

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)
Ordinary Shares	29,529⁽¹⁾	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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)
Warrants⁽²⁾	⁽³⁾	⁽⁴⁾	Ordinary Shares	3,176⁽⁵⁾	$11.5	D

Explanation of Responses:

1. Includes (i) 9,529 shares contained within units that the reporting person has irrevocably agreed to purchase at the closing of the Issuer's initial public offering (the "IPO") and (ii) 941 shares subject to forfeiture in the event the underwriters of the IPO do not exercise their overallotment option. Does not include an additional 471 shares contained within units that the reporting person has irrevocably agreed to purchase in connection with the IPO if and only if the underwriters of the IPO fully exercise their over-allotment option.

2. Represents warrants contained within units that the reporting person has irrevocably agreed to purchase at the closing of the Issuer's IPO.

3. Each warrant will become exercisable 30 days after the completion by the Issuer of an initial business combination.

4. Each warrant will expire five years after the completion by the Issuer of an initial business combination, or earlier upon redemption; provided that the warrants will expire earlier if the Issuer has not completed an initial business combination within the required time period and liquidates the trust account in connection therewith.

5. Does not include an additional 157 shares underlying warrants contained within units that the reporting person has irrevocably agreed to purchase in connection with the IPO if and only if the underwriters of the IPO fully exercise their over-allotment option.

	/s/ Adam Semler	01/22/2026
	** 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.

New insider Semler Adam claimed ownership of 29,529 units of Ordinary Shares (SEC Form 3)