NASDAQ · Finance

Perimeter Acquisition Corp. I (PMTR)

At June 30, 2026 it held $400.3K in cash. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 13, 2026.

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Price

$10.42

-0.10% on the day · September 25, 2026

52-week range $10.15 to $10.67

What Perimeter Acquisition Corp. I does

Perimeter Acquisition Corp. I is registered with the SEC under industry code SIC 6770 (Blank Checks). Its shares trade on NASDAQ under the ticker PMTR.

Next report expected around November 11, 2026.

Estimated from its filing rhythm: 52 weeks after its report of November 12, 2025. Not a date the company has announced. See the report calendar

Latest SEC filings

What Perimeter Acquisition Corp. I has filed recently, newest first. Each links to the original document on SEC EDGAR.

August 14, 2026
Passive stake changed SCHEDULE 13G/A
August 13, 2026
Quarterly report 10-Q · period to June 30, 2026Net income rose 122% to $1.9M.
May 15, 2026
Quarterly report 10-Q · period to March 31, 2026Net income was $1.5M.
May 15, 2026
Passive stake (5% or more) SCHEDULE 13G
March 30, 2026
Annual report 10-K · period to December 31, 2025
February 13, 2026
Passive stake changed SCHEDULE 13G/A
February 13, 2026
Passive stake changed SCHEDULE 13G/A
November 13, 2025
Passive stake changed SCHEDULE 13G/A
November 12, 2025
Quarterly report 10-Q · period to September 30, 2025Net income was $2.3M.
August 14, 2025
Passive stake changed SCHEDULE 13G/A

Recent insider filings (Forms 3, 4 and 144): 9, the latest on May 28, 2025. Insider transactions on SEC

Who owns PMTR

Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.

5% holders

Anyone who owns more than 5% of a class of shares must say so on Schedule 13D (if they may seek to influence the company) or 13G (a passive holder). The latest filing of each holder is shown: 13G filings of the last 2 years, 13D of the last 3.

Holder	Of class	Shares	Filed
Harraden Circle Investments, LLC13G, passive with 1 related filers	9.85%	2,440,298	August 14, 2026
Fort Baker Capital Management LP13G, passive with 2 related filers	6.3%	1,573,684	May 15, 2026

Latest filings below 5%: Healthcare of Ontario Pension Plan Trust Fund 1.8% (February 13, 2026).

Largest institutional holders

No Form 13F positions imported for this company yet.

Insiders

Reported holdings of insiders who filed a Form 4 in the last 12 months: the shares each one held after their latest reported transaction. This is not the total held by all insiders.

We have not read this company's Form 4 filings yet.

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about PMTR

What does Perimeter Acquisition Corp. I do?

Perimeter Acquisition Corp. I is registered with the SEC under industry code SIC 6770 (Blank Checks). Its shares trade on NASDAQ under the ticker PMTR.

When did Perimeter Acquisition Corp. I last report?

Its most recent periodic report is the quarterly report (10-Q) filed on August 13, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the passive stake changed from August 14, 2026.

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Where the numbers come from

Financial figures are the values Perimeter Acquisition Corp. I tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.