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

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.