SCHEDULE 13G/A

PERIMETER ACQUISITION CORP I

Class A Common Stock · CUSIP: G7010A103

Event date: 2025-06-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Harraden Circle Investments, LLC

  Shares: 1,900,000 · Class: 7.66%

• Harraden Circle Investors GP, LP

  Shares: 1,900,000 · Class: 7.66%

• Harraden Circle Investors GP, LLC

  Shares: 1,900,000 · Class: 7.66%

• Harraden Circle Investors, LP

  Shares: 918,051 · Class: 3.70%

• Harraden Circle Special Opportunities, LP

  Shares: 630,001 · Class: 2.54%

• Harraden Circle Strategic Investments, LP

  Shares: 351,948 · Class: 1.42%

• Frederick V. Fortmiller, Jr.

  Shares: 1,900,000 · Class: 7.66%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.