Insider Transactions Reported by 7 Insiders of 1RT Acquisition Corp.

Symbol: ONCH, ONCHU, ONCHW on Nasdaq
Location: Grand Cayman, Cayman Islands

Quick Takeaways

ONCH - 1RT Acquisition Corp. has 7 insiders with reported activity on this page.
No net insider buy/sell flow is currently reported for the last year.
Recent transaction rows are available for direct filing-level review.

What Changed

No meaningful buy/sell imbalance is currently visible in the one-year window.
Activity will update as new Forms 3/4/5 are filed.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Source Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 11 May 2025.

Buys

Shares: 0

Insiders: 0

Sells

Shares: 0

Insiders: 0

Net

Shares: 0

Insiders: 0

Window (months)	Buy $	Sell $	Net $
0-3	$0	$0	$0
3-6	$0	$0	$0
6-9	$0	$0	$0
9-12	$0	$0	$0

1RT Acquisition Corp. executives and other stock owners filed with the SEC include:

Name	Relationship	Valuation	Report Date
1RT Acquisition Sponsor LLC	10%+ Owner	Mixed	01 Jul 2025
Jeffrey C. Blockinger	Director	Mixed	01 Jul 2025
Jeffrey D. Nuechterlein	Director	Mixed	01 Jul 2025
Joseph John Majocha	Chief Financial Officer	Mixed	01 Jul 2025
Matthew D. Frymier	Director	Mixed	01 Jul 2025
Daniel M. Tapiero	Chief Executive Officer, Director, 10%+ Owner	Mixed	01 Jul 2025
Eric N. Vincent	Director	Mixed	01 Jul 2025

Top shareholders of 1RT Acquisition Corp. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
METEORA CAPITAL, LLC	13F 13D/G	Company	8.9% from 13D/G	2,087,440 mixed-class rows	$16,016,085	—	31 Dec 2025	13F 13D/G
Harraden Circle Investments, LLC	13D/G 13F	Company	8.7%	1,500,192	$15,677,006	$0	30 Sep 2025	13D/G 13F
Point72 Asset Management, L.P.	13F 13D/G	Company	8.7% from 13D/G	1,500,000	$15,600,000	—	31 Dec 2025	13F 13D/G
Linden Capital L.P.	13D/G	Linden Advisors LP	5.9%	1,010,100	$10,303,020	$0	05 Mar 2026	13D/G
Jain Global LLC	13D/G 13F	Company	5.2%	894,303	$9,345,466	$0	30 Sep 2025	13D/G 13F
RP Investment Advisors LP	13D/G	—	5%	865,500	$8,828,100	$0	24 Feb 2026	13D/G
J. Goldman & Co LP	13D/G 13F	Company	5%	862,500	$8,797,500	-$2,199,375	31 Dec 2025	13D/G 13F
Saba Capital Management, L.P.	13F	Company	— mixed-class rows	974,930 mixed-class rows	$8,042,295	—	31 Dec 2025	13F
LMR Partners LLP	13F	Company	4.7%	700,000	$7,280,000	—	31 Dec 2025	13F
MMCAP International Inc. SPC	13F	Company	— mixed-class rows	750,000 mixed-class rows	$6,207,015	—	31 Dec 2025	13F
Governors Lane LP	13F	Company	— mixed-class rows	601,590 mixed-class rows	$5,376,949	—	31 Dec 2025	13F
LINDEN ADVISORS LP	13F	Company	— mixed-class rows	637,624 mixed-class rows	$5,290,999	—	31 Dec 2025	13F
Polar Asset Management Partners Inc.	13F	Company	3.3%	500,000	$5,200,000	—	31 Dec 2025	13F
First Trust Capital Management L.P.	13F	Company	1.8%	299,996	$3,059,959	—	31 Dec 2025	13F
Verition Fund Management LLC	13F	Company	— mixed-class rows	332,569 mixed-class rows	$3,011,256	—	31 Dec 2025	13F
WHITEBOX ADVISORS LLC	13F	Company	— mixed-class rows	325,000 mixed-class rows	$2,689,707	—	31 Dec 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.5%	261,952	$2,671,910	—	31 Dec 2025	13F
Ghisallo Capital Management LLC	13F	Company	1.7%	250,000	$2,600,000	—	31 Dec 2025	13F
Context Capital Management, LLC	13F	Company	— mixed-class rows	312,500 mixed-class rows	$2,586,256	—	31 Dec 2025	13F
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	13F	Company	— mixed-class rows	312,500 mixed-class rows	$2,586,256	—	31 Dec 2025	13F
MOORE CAPITAL MANAGEMENT, LP	13F	Company	— mixed-class rows	312,500 mixed-class rows	$2,586,256	—	31 Dec 2025	13F
TENOR CAPITAL MANAGEMENT Co., L.P.	13F	Company	— mixed-class rows	312,500 mixed-class rows	$2,586,256	—	31 Dec 2025	13F
HBK INVESTMENTS L P	13F	Company	— mixed-class rows	311,805 mixed-class rows	$2,579,158	—	31 Dec 2025	13F
ExodusPoint Capital Management, LP	13F	Company	1.5%	250,000	$2,550,000	—	31 Dec 2025	13F
Mint Tower Capital Management B.V.	13F	Company	— mixed-class rows	250,000 mixed-class rows	$2,550,000	—	31 Dec 2025	13F
HGC Investment Management Inc.	13F	Company	1.3%	200,000	$2,080,000	—	31 Dec 2025	13F
Shaolin Capital Management LLC	13F	Company	— mixed-class rows	256,804 mixed-class rows	$2,072,952	—	31 Dec 2025	13F
CITADEL ADVISORS LLC	13F	Company	1.2%	176,630	$1,829,886	—	31 Dec 2025	13F
Clear Street Group Inc.	13F	Company	— mixed-class rows	189,606 mixed-class rows	$1,704,387	—	31 Dec 2025	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.88%	150,624	$1,536,365	—	31 Dec 2025	13F
Radcliffe Capital Management, L.P.	13F	Company	— mixed-class rows	154,122 mixed-class rows	$1,431,010	—	31 Dec 2025	13F
Cable Car Capital, LP	13F	Company	— mixed-class rows	156,250 mixed-class rows	$1,293,128	—	31 Dec 2025	13F
TORONTO DOMINION BANK	13F	Company	— mixed-class rows	131,538 mixed-class rows	$1,155,345	—	31 Dec 2025	13F
DLD Asset Management, LP	13F	Company	— mixed-class rows	136,540 mixed-class rows	$1,130,960	—	31 Dec 2025	13F
JPMORGAN CHASE & CO	13F	Company	— mixed-class rows	103,152 mixed-class rows	$1,060,150	—	31 Dec 2025	13F
ARISTEIA CAPITAL, L.L.C.	13F	Company	— mixed-class rows	124,998 mixed-class rows	$1,037,247	—	31 Dec 2025	13F
Magnetar Financial LLC	13F	Company	— mixed-class rows	125,000 mixed-class rows	$1,034,503	—	31 Dec 2025	13F
PICTON MAHONEY ASSET MANAGEMENT	13F	Company	— mixed-class rows	125,000 mixed-class rows	$1,034,503	—	31 Dec 2025	13F
K2 PRINCIPAL FUND, L.P.	13F	Company	— mixed-class rows	125,000 mixed-class rows	$1,034,500	—	31 Dec 2025	13F
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)	13F	Company	0.58%	100,000	$1,020,000	—	31 Dec 2025	13F
RIVERNORTH CAPITAL MANAGEMENT, LLC	13F	Company	— mixed-class rows	110,040 mixed-class rows	$910,693	—	31 Dec 2025	13F
PERISCOPE CAPITAL INC.	13F	Company	— mixed-class rows	99,500 mixed-class rows	$823,464	—	31 Dec 2025	13F
Virtu Financial LLC	13F	Company	0.47%	80,288	$819,000	—	31 Dec 2025	13F
AQR Arbitrage LLC	13F	Company	— mixed-class rows	94,915 mixed-class rows	$785,518	—	31 Dec 2025	13F
PEAK6 LLC	13F	Company	0.5%	75,000	$780,000	—	31 Dec 2025	13F
BERKLEY W R CORP	13F	Company	— mixed-class rows	93,020 mixed-class rows	$769,835	—	31 Dec 2025	13F
Kamunting Street Capital Management, L.P.	13F	Company	0.4%	60,000	$624,000	—	31 Dec 2025	13F
Quarry LP	13F	Company	— mixed-class rows	72,459 mixed-class rows	$620,833	—	31 Dec 2025	13F
BOOTHBAY FUND MANAGEMENT, LLC	13F	Company	— mixed-class rows	58,092 mixed-class rows	$592,538	—	31 Dec 2025	13F
HRT FINANCIAL LP	13F	Company	0.33%	49,398	$513,000	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for 1RT Acquisition Corp.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
1RT Acquisition Sponsor LLC	ONCH	Warrants to purchase Class A Ordinary Shares	Purchase				1,500,000	1,500,000	01 Jul 2025	Direct
Daniel M. Tapiero	ONCH	Warrants to purchase Class A Ordinary Shares	Purchase				1,500,000	1,500,000	01 Jul 2025	See footnote

* An asterisk sign (*) next to the price indicates that the price is likely invalid.