Comparable stake leader
1RT Acquisition Sponsor LLC
SEC ownership of 1RT Acquisition Corp.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002054272.
Disclosed value leader
METEORA CAPITAL, LLC
Comparable rows
34/50
Latest evidence
31 Mar 2026
- Public ticker
- ONCH, ONCHU, ONCHW on Nasdaq
- Parsed ownership sources
- 3/4/5, 13D/G, and 13F
- Largest SEC-reported holder
- 1RT Acquisition Sponsor LLC
- Latest 13D/G holder
- 1RT Acquisition Sponsor LLC
- Latest parsed ownership date
- 31 Mar 2026
- Issuer CIK
- 0002054272
- Issuer location
- Grand Cayman, Cayman Islands
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of 1RT Acquisition Corp. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
1RT Acquisition Sponsor LLC
Disclosed value leader
METEORA CAPITAL, LLC
Comparable rows
34/50
Latest evidence
31 Mar 2026
3/4/5
13D/G
13F
Lead comparable stake: 20%
16 rows are not safely comparable across share classes.
13D/G row: 1RT Acquisition Sponsor LLC
Showing 1-8 of 50 holder rows.
Quick read
1RT Acquisition Sponsor LLC leads the comparable SEC ownership view at 20%.
34 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens 1RT Acquisition Sponsor LLC's linked filing trail.
Comparable ownership
Top 5
1RT Acquisition Sponsor LLC
20%
METEORA CAPITAL, LLC
9.9%
Point72 Asset Management, L.P.
8.7%
RP Investment Advisors LP
6.3%
Linden Capital L.P.
5.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| 1RT Acquisition Sponsor LLC |
3/4/5
13D/G
10%+ Owner
|
20%
from 13D/G
|
—
1,500,000 shares
|
— | 01 Jul 2025 |
| METEORA CAPITAL, LLC |
13F
13D/G
Company
|
9.9%
from 13D/G
|
$17,525,680
2,255,673 shares
mixed-class rows
|
— | 31 Mar 2026 |
| Point72 Asset Management, L.P. |
13F
13D/G
Company
|
8.7%
from 13D/G
|
$15,420,450
1,500,000 shares
|
— | 31 Mar 2026 |
| RP Investment Advisors LP |
13D/G
|
6.3%
|
$10,960,387
1,080,906 shares
|
+$2,184,217 | 31 Mar 2026 |
| Linden Capital L.P. |
13D/G
Linden Advisors LP
|
5.9%
|
$10,303,020
1,010,100 shares
|
$0 | 05 Mar 2026 |
| Jain Global LLC |
13D/G
13F
Company
|
5.2%
|
$9,345,466
894,303 shares
|
$0 | 30 Sep 2025 |
| J. Goldman & Co LP |
13D/G
13F
Company
|
5%
|
$8,797,500
862,500 shares
|
-$2,199,375 | 31 Dec 2025 |
| LMR Partners LLP |
13F
Company
|
4.1%
|
$7,196,210
700,000 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 05 Jun 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-7 of 7 reporting-owner rows connected to 1RT Acquisition Corp.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
7
Largest Forms 3/4/5 holder
1RT Acquisition Sponsor LLC
Net 12M change
$0
Latest report
01 Jul 2025
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | 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 |
Recent insider transactions for 1RT Acquisition Corp.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported 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 |
* marks a reported price that did not pass the local price check.