Perimeter Acquisition Corp. I (PMTR) shareholders
PMTRNasdaqBlank ChecksFiscal year ends December 31Also trades as PMTRU, PMTRW
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 13, 2026
$10.49+0.01 (+0.10%)
Close on Nov 13, 2026Market cap $323.36MP/E –Yield –
Ownership
Who owns Perimeter Acquisition Corp. I's shares
Held by institutions
–
Shares held, 13F filers
Institutional holders
–
Net institutional buying
–
Insider trades, 12 months
0 buys · 0 sales
Open-market trades only
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Frederick V. Fortmiller, Jr. Joint filing with Harraden Circle Investments, LLC (9.85%) | 2,440,298 | 9.85% | 13G (passive) amendment | Jun 30, 2026 |
| Harraden Circle Investors GP, LP Joint filing with Harraden Circle Investments, LLC (9.28%), Harraden Circle Investors GP, LLC (9.28%) and 1 more | 2,300,498 | 9.28% | 13G (passive) amendment | Dec 31, 2025 |
| Harraden Circle Investors GP, LLC Joint filing with Harraden Circle Investments, LLC (7.66%), Harraden Circle Investors GP, LP (7.66%) and 1 more | 1,900,000 | 7.66% | 13G (passive) amendment | Jun 30, 2025 |
| Fort Baker Capital Management LP Joint filing with Steven Patrick Pigott (6.30%), Fort Baker Capital, LLC (6.30%) | 1,573,684 | 6.30% | 13G (passive) | Mar 31, 2026 |
| Alberta Investment Management Corp | 1,500,000 | 6.10% | 13G (passive) | May 12, 2025 |
| Linden Advisors LP Joint filing with Siu Min Wong (6.10%), Linden Capital L.P. (5.70%) and 1 more | 1,500,000 | 6.10% | 13G (passive) | May 14, 2025 |
| Magnetar Financial LLC Joint filing with Magnetar Capital Partners LP (6.05%), Supernova Management LLC (6.05%) and 1 more | 1,500,000 | 6.05% | 13G (passive) | Jun 30, 2025 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | Latest filing |
|---|---|---|---|
| Jordan Andrew Blashek | Executive Chairman, Director, 10% owner | 575,000 | May 12, 2025 |
| Josef Meir Valdman | Chief Executive Officer | – | May 12, 2025 |
| Todd Lemkin | Chief Investment Officer | – | May 12, 2025 |
| Sean Averell Pybus | Director | – | May 28, 2025 |
| A. Scott Letier | Director | – | May 12, 2025 |
| M. Scott Faris | Director | – | May 12, 2025 |
| Jack Selby | Director | – | May 12, 2025 |
| Richard John Berthy | Director | – | May 12, 2025 |
| Acquisition Sponsor LLC Perimeter | 10% owner | 575,000 | May 12, 2025 |
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of shares outstanding
–
0M shares short
Days to cover
1.0
At 0M shares a day
Change since last report
+545.5%
From 0M shares
Short volume, 20 days
7.2%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Perimeter Acquisition Corp. I's stock actually held short. No settlement fails above the SEC's reporting threshold in the last 90 days.
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