GP-Act III Acquisition Corp. (GPAT)
Nasdaq: GPAT · Blank Checks · New York, NY · filing with the SEC since 2021
Who owns GP-Act III Acquisition Corp.
As filed with the SECHolders of 5% or more
6
GP-Act III Sponsor LLC holds 19.8% of Class A ordinary shares, as its SCHEDULE 13G filed Mar 7, 2025 says.
Directors and officers
0
report now, of 11 people on the record since 2024. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 6 named at left.
Holders of 5% or moreshare of the class, as filed
GP-Act III Sponsor LLC
SCHEDULE 13G · filed Mar 7, 2025 · Class A ordinary shares
Polar Asset Management Partners Inc.
SCHEDULE 13G · filed Jun 4, 2026 · Class A ordinary shares, par value $0.0001 per share · 4.1% in Aug 14, 2025
AQR Capital Management, LLC
SCHEDULE 13G/A · filed Aug 14, 2026 · Class A ordinary shares, par value $0.0001 per share
HGC Investment Management Inc
SCHEDULE 13G · filed Feb 14, 2025 · Class A Common Stock
Meteora Capital, LLC
SCHEDULE 13G · filed Aug 14, 2025 · Class A ordinary shares, par value $0.0001 per share
Barclays PLC
SCHEDULE 13G/A · filed Mar 28, 2025 · COMMON-STOCK · 5.16% in Nov 13, 2024
Picton Mahoney Asset Management
SCHEDULE 13G/A · filed Apr 27, 2026 · Class A Ordinary Shares · reported falling below 5%, from 6.52% in Oct 17, 2024
MMCAP International Inc. SPC
SCHEDULE 13G/A · filed Aug 12, 2025 · Class A ordinary shares, par value $0.0001 per share · reported falling below 5%, from 7.22% in May 13, 2025
First Trust Merger Arbitrage Fund
SCHEDULE 13G/A · filed Aug 14, 2026 · Class A Ordinary Shares, par value $0.0001 per share ("Ordinary Shares") · reported falling below 5%
Karpus Management, Inc.
SCHEDULE 13G/A · filed Jun 5, 2026 · Common · reported falling below 5%, from 6.51% in Aug 14, 2025
Bank of Montreal
SCHEDULE 13G/A · filed Feb 12, 2026 · Common · reported falling below 5%, from 5.14% in Nov 13, 2025
What GPAT reports owning in othersstakes of 5% or more, and other ties
GP-Act III Acquisition Corp. reports no stake in another company in the record.
Insider tradesForm 4
0sales
0purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
No open-market trade is on the record for these years.
Dollars as filed, summed by the transaction date.
People who traded in the window
No one on the roster filed an open-market trade in the window.