This page provides access to U.S. regulatory filings for Perimeter Acquisition Corp. I (PMTR), a special purpose acquisition company in the financial services sector. The company is described as a public acquisition vehicle and blank check company, with a focus on completing a business combination in the defense, national security, and technology sectors.
For a SPAC such as Perimeter Acquisition Corp. I, key SEC documents include the registration statement on Form S-1 related to its initial public offering of units, ordinary shares, and redeemable warrants. Over time, investors may also review periodic reports, such as annual reports on Form 10-K and quarterly reports on Form 10-Q, if and when they are filed, to understand the company’s structure, risk factors, and progress toward identifying a business combination.
In addition, this page can surface current reports on Form 8-K that describe material events, such as the pricing and closing of the initial public offering or the announcement of a proposed merger or similar transaction. If Perimeter Acquisition Corp. I completes a business combination, subsequent filings may provide details about the target company, the transaction terms, and the post-combination entity.
Stock Titan enhances these filings with AI-powered summaries that explain the key points of lengthy documents in plain language. Users can quickly see the main topics in a registration statement or report, and then open the full filing for deeper review. Real-time updates from EDGAR ensure that new filings for PMTR appear promptly, while AI-generated highlights help readers focus on sections that matter most for understanding this SPAC’s activities and its focus on defense, national security, and technology-related opportunities.
Perimeter Acquisition Corp I has a significant shareholder group reporting its current position in the Class A shares. Harraden Circle Investments, LLC and its managing member, Frederick V. Fortmiller, Jr., report beneficial ownership of 2,440,298 Class A shares, representing 9.85% of the class.
All 2,440,298 shares are held with shared voting and dispositive power, and neither reporting person has sole voting or dispositive authority. The position is held across several Harraden-managed funds, and an internal reorganization effective June 30, 2026 removed certain prior reporting persons who are no longer beneficial owners.
Perimeter Acquisition Corp. I, a Cayman Islands SPAC, reported net income of $1.94 million for the quarter and $3.43 million for the six months ended June 30, 2026, driven almost entirely by $4.32 million of interest on funds held in its trust account. The company has not commenced operations and has no operating revenues; activity relates to its 2025 IPO and search for a business combination.
Total assets were $252.6 million, including $252.07 million of cash held in the trust account and $0.40 million of operating cash. Class A ordinary shares subject to possible redemption totaled 24,150,000 at a redemption value of $10.44 per share. As of August 13, 2026, there were 24,788,000 Class A and 6,037,500 Class B ordinary shares outstanding.
The company had a working capital deficit of $363,339 and $483,000 outstanding under a non‑interest‑bearing working capital note. It must complete a business combination by May 14, 2027 or liquidate, and management states that these liquidity constraints and the mandatory liquidation timeline raise substantial doubt about its ability to continue as a going concern.
Perimeter Acquisition Corp. I, a Cayman Islands SPAC, reported net income of $1.48 million for the quarter ended March 31, 2026, driven by $2.15 million of interest on its IPO trust while incurring $668,269 of formation and operating costs.
The company holds $249.9 million in its Trust Account and $503,428 of cash outside the trust, with a working capital deficit of $152,530 and a $483,000 non‑interest‑bearing working capital note outstanding. Class A ordinary shares subject to possible redemption total 24,150,000 at a redemption value of about $10.35 per share.
Perimeter has until May 14, 2027 to complete a business combination, after which it must liquidate if no deal is closed. Management discloses that these liquidity constraints and the fixed deadline raise substantial doubt about the company’s ability to continue as a going concern.
Perimeter Acquisition Corp. I reports a Schedule 13G filing disclosing beneficial ownership of 1,573,684 Class A ordinary shares by Fort Baker Capital Management entities and Steven Patrick Pigott.
The filing states these shares represent 6.3% of the Class A outstanding, based on 24,788,000 shares outstanding as of March 30, 2026. The reporting persons state shared voting and dispositive power over the 1,573,684 shares through Fort Baker Capital Management LP and Fort Baker Capital, LLC.
Perimeter Acquisition Corp. I, a Cayman Islands blank check company, filed its annual report describing its status and strategy as a special purpose acquisition company. Formed on March 6, 2025, it has not yet selected a merger target and has generated no operating revenues.
The company intends to complete an initial business combination focused on U.S. and allied defense, national security, aerospace, space, government services and related sectors, leveraging a management team with deep investing and government experience. As of December 31, 2025, it reported $239,298,018 available for a business combination after $8,452,500 of deferred underwriting fees.
Non‑affiliate voting stock had an aggregate market value of approximately $245,605,500 on June 30, 2025, based on a $10.17 Nasdaq price. As of March 30, 2026, there were 24,788,000 Class A and 6,037,500 Class B ordinary shares outstanding. Sponsor and insider economics, including 6,037,500 founder shares bought for $25,000 and 638,000 private placement units at $10.00 each, create potential conflicts that are extensively detailed, along with lock‑up and transfer restrictions.
Perimeter Acquisition Corp I received an updated ownership filing from a group of Harraden Circle investment entities and Frederick V. Fortmiller, Jr. They report beneficial ownership of 2,300,498 shares of Class A common stock, representing 9.28% of the class as of the event date.
All reported shares carry shared voting and dispositive power, with no sole voting or dispositive authority. The position is held across several Delaware limited partnerships, including Harraden Circle Investors, Special Opportunities, Strategic Investments, and Concentrated funds, with Mr. Fortmiller as managing member of key general partners and the adviser.
The filers certify the shares were not acquired and are not held for the purpose or effect of changing or influencing control of Perimeter Acquisition Corp I, and are instead reported on a passive basis under Schedule 13G/A.
Healthcare of Ontario Pension Plan Trust Fund filed an amended Schedule 13G reporting its ownership in Perimeter Acquisition Corp. I, a Cayman Islands blank check company. HOOPP reports beneficial ownership of 450,000 Class A ordinary shares, representing 1.8% of the class based on 24,788,000 shares outstanding as of November 12, 2025.
HOOPP has sole voting and dispositive power over these shares and no shared power. The filing states the securities were acquired and are held in the ordinary course of business, and not for the purpose of changing or influencing control of the issuer.
Perimeter Acquisition Corp. I reported Q3 2025 results as a newly formed SPAC. Net income was $2,295,786, driven by $2,569,088 of interest earned on funds in its trust, partially offset by $273,302 of operating costs. Since inception (March 6, 2025) through September 30, 2025, net income totaled $3,124,181.
The balance sheet shows cash and marketable securities in the Trust Account of $245,365,396. Class A ordinary shares subject to possible redemption were 24,150,000 at a redemption value of $10.16 per share. Cash outside the trust was $846,736, working capital was $671,879, and deferred underwriting fees were $8,452,500. A $483,000 unsecured, non‑interest‑bearing working capital note is outstanding and is convertible into units at $10.00 upon a Business Combination.
There were 12,394,000 warrants outstanding, each whole warrant exercisable at $11.50 per share, and, as of November 12, 2025, 24,788,000 Class A and 6,037,500 Class B shares were outstanding. Management disclosed that liquidity conditions raise substantial doubt about the ability to continue as a going concern; the company intends to complete a Business Combination within 24 months from the IPO closing, but completion is not assured.