PMTR · Perimeter Acquisition Corp. I · Shareholders & Ownership
Substantial doubt about the company's ability to continue as a going concern.
“In connection with our assessment of going concern considerations under applicable accounting standards, management has determined that our possible need for additional financing to enable us to negotiate and complete our initial Business Combination, as well as the deadline by which we may be required to liquidate our Trust Account, raise substantial doubt about our ability to continue as a going concern through approximately one year from the date the unaudited condensed financial statements included in Item 1. "Interim Financial Statements" of this Quarterly Report were issued.”View the 10-Q filed Aug 13, 2026
Every disclosed holder of PMTR in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns PMTR
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 33,106,320 | 107.40% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 0 | 0.00% |
| Remaining | 2,280,820 | -7.40% |
| Registered funds (N-PORT, not summed) | 3,123 | 0.01% |
Shares outstanding: 30,825,500, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of PMTR
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
Harraden Circle Investments, LLC
13F
CIK 1910592 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
3,602,049 | ||
| 1.1 |
Harraden Circle Investments, LLC
13G
CIK 1910592 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
2,440,298 | ||
| 2 |
Linden Advisors LP
13F
CIK 1279396 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
2,350,000 | ||
| 3 |
Alberta Investment Management Corp
13F
CIK 1463559 · Non-US institution · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
2,250,000 | ||
| 4 |
Magnetar Financial LLC
13F
CIK 1352851 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
2,250,000 | ||
| 5 |
Fort Baker Capital Management LP
13F
CIK 1688382 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
1,839,833 | ||
| 6 |
MOORE CAPITAL MANAGEMENT, LP
13F
CIK 1448574 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
1,800,000 | ||
| 7 |
Governors Lane LP
13F
CIK 1644187 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
1,490,579 | ||
| 8 |
TORONTO DOMINION BANK
13F
CIK 947263 · Bank · Jun 30, 2026
Classes PMTR, PMTRU, PMTRW, carried, not yet filed for the newest quarter
|
1,351,005 | ||
| 9 |
Lineage Point Capital LP
13F
CIK 2093311 · Investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
1,273,611 | ||
| 10 |
Saba Capital Management, L.P.
13F
CIK 1510281 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
1,203,985 | ||
| 11 |
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
13F
CIK 1535845 · Non-US institution · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
1,100,000 | ||
| 12 |
METEORA CAPITAL, LLC
13F
CIK 1905106 · Investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
965,419 | ||
| 13 |
D. E. Shaw & Co., Inc.
13F
CIK 1009207 · Unknown · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
750,000 | ||
| 14 |
Centiva Capital, LP
13F
CIK 1692507 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
609,639 | ||
| 15 |
Radcliffe Capital Management, L.P.
13F
CIK 1218275 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
577,825 | ||
| 16 |
Blashek Jordan Andrew
Insider
CIK 2066675 · May 12, 2025
Director, Executive Chairman, 10% Owner, issuer-wide, not summed
|
575,000 | ||
| 17 |
Perimeter Acquisition Sponsor LLC
Insider
CIK 2061471 · May 12, 2025
10% Owner, issuer-wide, not summed
|
575,000 | ||
| 18 |
HBK INVESTMENTS L P
13F
CIK 1011443 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
560,000 | ||
| 19 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
537,309 | ||
| 20 |
Walleye Capital LLC
13F
CIK 1758720 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
521,771 | ||
| 21 |
Ghisallo Capital Management LLC
13F
CIK 1825214 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
500,000 | ||
| 22 |
Sculptor Capital LP
13F
CIK 1054587 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
500,000 | ||
| 23 |
Periscope Capital Inc.
13F
CIK 1695320 · Exempt reporting adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
492,936 | ||
| 24 |
PICTON MAHONEY ASSET MANAGEMENT
13F
CIK 1539041 · Non-US institution · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
487,500 | ||
| 25 |
Shaolin Capital Management LLC
13F
CIK 1766806 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
484,222 | ||
| 26 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRU, carried, not yet filed for the newest quarter
|
463,507 | ||
| 27 |
AQR Arbitrage LLC
13F
CIK 1167456 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
434,352 | ||
| 28 |
K2 PRINCIPAL FUND, L.P.
13F
CIK 1461790 · Unknown · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
414,055 | ||
| 29 |
GLAZER CAPITAL, LLC
13F
CIK 1076809 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
379,931 | ||
| 30 |
Context Capital Management, LLC
13F
CIK 1301396 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
350,000 | ||
| 31 |
DLD Asset Management, LP
13F
CIK 1578299 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
332,115 | ||
| 32 |
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS
13F
CIK 1083190 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
252,751 | ||
| 33 |
LMR Partners LLP
13F
CIK 1578621 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
250,000 | ||
| 34 |
ARISTEIA CAPITAL, L.L.C.
13F
CIK 1080171 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
225,000 | ||
| 35 |
Westchester Capital Management, LLC
13F
CIK 1512805 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
224,998 | ||
| 36 |
Schonfeld Strategic Advisors LLC
13F
CIK 1665241 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
200,385 | ||
| 37 |
HGC Investment Management Inc.
13F
CIK 1711200 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
194,200 | ||
| 38 |
READYSTATE ASSET MANAGEMENT LP
13F
CIK 1900923 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRU, carried, not yet filed for the newest quarter
|
165,459 | ||
| 39 |
|
160,000 | ||
| 40 |
Verition Fund Management LLC
13F
CIK 1454027 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
159,004 | ||
| 41 |
TENOR CAPITAL MANAGEMENT Co., L.P.
13F
CIK 1346554 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
150,000 | ||
| 42 |
BERKLEY W R CORP
13F
CIK 11544 · Insurance company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
148,830 | ||
| 43 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
Classes PMTR, PMTRU, carried, not yet filed for the newest quarter
|
126,566 | ||
| 44 |
BOOTHBAY FUND MANAGEMENT, LLC
13F
CIK 1549230 · Registered investment adviser · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
116,623 | ||
| 45 |
Hudson Bay Capital Management LP
13F
CIK 1393825 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
100,000 | ||
| 46 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
98,304 | ||
| 47 |
Clear Street Group Inc.
13F
CIK 1881567 · Unknown · Jun 30, 2026
Classes PMTR, PMTRU, carried, not yet filed for the newest quarter
|
89,150 | ||
| 48 |
HEIGHTS CAPITAL MANAGEMENT, INC
13F
CIK 1081698 · Unknown · Jun 30, 2026
Classes PMTR, PMTRW, carried, not yet filed for the newest quarter
|
88,387 | ||
| 49 |
SONA ASSET MANAGEMENT (US) LLC
13F
CIK 1856405 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
82,991 | ||
| 50 |
StoneX Group Inc.
13F
CIK 913760 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
79,594 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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