Company: ONCHW
Filing Date: 2025-06-11
Form Type: S-1
Source: 0001213900-25-053361
Chunk: 311

Company: 1RT Acquisition Corp.
Filing Date: 2025-06-11
Form: S-1
Chunk 311
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-In Capital |      — |     | Accumulated 
 Deficit     | —       |   |     | Shareholder’s 
 Equity        |       — |   |
|:---------------------------------------------|:----|----------------:|:----|:-------|----:|:----|:----------------|-------:|:----|:------------|:--------|:--|:----|:--------------|--------:|:--|
| Class B ordinary shares issued to Sponsor(1) |     |       4,312,500 |     |        | 431 |     |                 | 24,569 |     |             | —       |   |     |               |  25,000 |   |
| Net loss                                     |     |               — |     |        |   — |     |                 |      — |     |             | (19,932 | ) |     |               | (19,932 | ) |
| Balance – December 31, 2024                  |     |       4,312,500 |     | $      | 431 |     | $               | 24,569 |     | $           | (19,932 | ) |     | $             |   5,068 |   |

____________ (1)Includes up to 562,500 Class B ordinary shares subject to forfeiture if the over -allotmentoption is not exercised in full or in part by the underwriters (Note 7). The accompanying notes are an integral part of the financial statements.

F-5

1RT Acquisition Corp.
STATEMENTS OF CASH FLOWS

|                                                                                             |     | For the      
 three months 
 ended        
 March 31,    
 2025         
 (Unaudited)  |         |   |     | For the      
 Period from  
 December 13, 
 2024         
 (Inception)  
 through      
 December 31, 
 2024         |         |   |
|:--------------------------------------------------------------------------------------------|:----|:-------------|--------:|:--|:----|:-------------|--------:|:--|
| Cash flows from operating activities:                                                       |     |              |         |   |     |              |         |   |
| Net loss                                                                                    |     | $            | (31,000 | ) |     | $            | (19,932 | ) |
| Adjustment to reconcile net loss to net cash used in operating activities:                  |     |              |         |   |     |