Perimeter Acquisition Sponsor LLC - May 12, 2025 Form 3 Insider Report for Perimeter Acquisition Corp. I (PMTR)

Role: 10%+ Owner
Signature: /s/ Jordan Blashek, Managing Member of Perimeter Acquisition Sponsor LLC
Stock symbol: PMTR
Transactions as of: May 12, 2025
Transactions value $: $0
Form type: 3
Date filed: 5/12/2025, 09:33 PM
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Perimeter Acquisition Sponsor LLC	10%+ Owner	6060 N. CENTRAL EXPRESS WAY, SUITE 500, DALLAS	/s/ Jordan Blashek, Managing Member of Perimeter Acquisition Sponsor LLC	2025-05-12	0002061471

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	PMTR	Class A ordinary shares						575K	May 12, 2025	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	PMTR	Class B ordinary shares							May 12, 2025	Class A ordinary shares	5.91M		Direct	F1, F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This Form 3 is being filed by Perimeter Acquisition Sponsor LLC (the "Sponsor"). The Sponsor is controlled by Mr. Jordan Blashek, as a result of his role as managing member of the Sponsor. As a result, Mr. Blashek may be deemed to have beneficial ownership of the Class B ordinary shares and the Private Placement Units (as defined below) (including the Private Placement Shares (as defined below) included in such units) held by the Sponsor. Mr. Blashek disclaims such beneficial ownership except to the extent of the Sponsor's pecuniary interest therein.
F2	Represents Class A ordinary shares, par value $0.0001, of the issuer (the "Private Placement Shares") that are included in the 575,000 private placement units (the "Private Placement Units") that will be purchased by the Sponsor from the issuer in a private placement at $10.00 per Private Placement Unit (the "Private Placement"), as described in the issuer's registration statement on Form S-1 (File No. 333-285974) (the "Registration Statement"). Each Private Placement Unit is comprised of one Private Placement Share and one-half of one warrant (the "Private Placement Warrants"), each whole Private Placement Warrant exercisable to purchase one Private Placement Share. Does not represent any Private Placement Shares issuable upon the exercise of Private Placement Warrants.
F3	Pursuant to the Issuer's amended and restated memorandum and articles of association, the Class B ordinary shares have no expiration date and will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination on a one-for-one basis subject to adjustment pursuant to certain anti-dilution rights.
F4	The Class B ordinary shares reported herein include up to 757,500 Class B ordinary shares that are subject to forfeiture to the extent the underwriters of the initial public offering of the issuer's securities do not exercise in full their over-allotment option, as described in the Registration Statement. The over-allotment option of the underwriters expires 45-day from the date of the final prospectus related to the issuer's initial public offering.

Remarks:

Exhibit 24 - Power of Attorney