SEC FORM 3

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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^*

KPET Ultra Paceline LLC

(Last)

(First)

(Middle)

5109 S. BROADBAND LANE

(Street)

SIOUX FALLS

57108

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/30/2026

3. Issuer Name and Ticker or Trading Symbol
KPET Ultra Paceline Corp [ KPET ]

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

Director	X	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)

	Form filed by One Reporting Person
X	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)
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)
Class B Ordinary Shares, par value $0.0001 per share	⁽¹⁾	⁽¹⁾	Class A Ordinary Shares, par value $0.0001 per share	5,630,000⁽²⁾	⁽¹⁾	I	See footnotes⁽³⁾

1. Name and Address of Reporting Person^*

KPET Ultra Paceline LLC

(Last)

(First)

(Middle)

5109 S. BROADBAND LANE

(Street)

SIOUX FALLS

57108

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

KPThree Capital LLC

(Last)

(First)

(Middle)

5109 S. BROADBAND LANE

(Street)

SIOUX FALLS

57108

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Peterson Karl Mr.

(Last)

(First)

(Middle)

5109 S. BROADBAND LANE

(Street)

SIOUX FALLS

57108

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Tamraz Eduardo

(Last)

(First)

(Middle)

5109 S. BROADBAND LANE

(Street)

SIOUX FALLS

57108

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. The Class B Ordinary Shares are automatically convertible into the Issuer's Class A Ordinary Shares at the time of the Issuer's initial business combination (with such conversion taking place immediately prior to, simultaneously with, or immediately following the time of the Issuer's initial business combination, as may be determined by the Issuer's directors) on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date.

2. Includes 750,000 Class B Ordinary Shares that are subject to forfeiture if the underwriters in the Issuer's initial public offering of ordinary shares do not exercise their over-allotment option in full.

3. KPET Ultra Paceline LLC is the record holder of the shares reported herein. KPThree Capital LLC and Roger Edward Tamraz are the managing members of KPET Ultra Paceline LLC. Karl Peterson is the managing member of KPThree Capital LLC. As such, KPThree Capital LLC, Karl Peterson and Roger Edward Tamraz may be deemed to have or share beneficial ownership of the Class B ordinary shares held directly by KPET Ultra Paceline LLC. Each such entity or person disclaims any beneficial ownership of such securities held by KPET Ultra Paceline LLC other than to the extent of any pecuniary interest they may have therein, directly or indirectly, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or any other purpose.

Remarks:

See Exhibit 24 - Power of Attorney

	KPET Ultra Paceline LLC By: Roger Edward Tamraz, Authorized Person /s/ Roger Edward Tamraz	03/30/2026
	KPThree Capital LLC By: Karl Peterson, Authorized Person /s/ Karl Peterson	03/30/2026
	Karl Peterson /s/ Karl Peterson	03/30/2026
	Roger Edward Tamraz /s/ Roger Edward Tamraz	03/30/2026
	** 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).
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