Company: QTIWW
Filing Date: 2025-12-29
Form Type: S-1/A
Source: 0001628280-25-058960
Chunk: 436

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-29
Form: S-1/A
Chunk 436
---
              |     | Number of 
 Options   |         | — |     | Weighted-      
 Average        
 Exercise Price |    — |      |     | Weighted-Average 
 Remaining        
 Contractual      
 Life (years)     |     |   0 |
|:------------------------------------------|:----|:----------|--------:|:--|:----|:---------------|-----:|-----:|:----|:-----------------|:----|----:|
| Granted                                   |     |           | 108,333 |   |     |                |      | 7.47 |     |                  |     |     |
| Cancelled                                 |     |           |       — |   |     |                |    — |      |     |                  |     |     |
| Outstanding, September 30, 2025           |     |           | 108,333 |   |     | $              | 7.47 |      |     |                  |     | 9.9 |
| Exercisable as of September 30, 2025      |     |           |       — |   |     | $              |    — |      |     |                  |     |   0 |
| Expected-to-vest as of September 30, 2025 |     |           | 108,333 |   |     | $              | 7.47 |      |     |                  |     | 9.9 |

<div align='center'>F-77</div>

#### QT IMAGING HOLDINGS, INC.

### Notes to Condensed Consolidated Financial Statements
<div align='center'>(Unaudited)</div>

2024 Equity Incentive Plan

On January 1, 2025, an additional 446,137shares of common stock were added to the 2024 Equity Incentive Plan.

The following table summarizes information regarding activity in the 2024 Equity Incentive Plan during the nine months ended September 30, 2025:

|                                           |     | Number of 
 Options   |           |         |     | Weighted-      
 Average        
 Exercise Price |      |     | Weighted-Average 
 Remaining        
 Contractual      
 Life (years)     |     |     |
|:------------------------------------------|:----|:----------|----------:|--------:|:----|:---------------|-----:|:----|:-----------------|:----|----:|
| Outstanding, January 1, 2025(