Company: QSEA
Filing Date: 2025-03-12
Form Type: S-1/A
Source: 0001829126-25-001750
Chunk: 153

Company: Quartzsea Acquisition Corp
Filing Date: 2025-03-12
Form: S-1/A
Chunk 153
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8 | % |     |                     | 105.0 | % |

<div align='center'>96</div>

In addition, the table below shows material probable transactions or sources of dilution and the extent of such dilution that non-redeeming public shareholders could experience in connection with the closing of this offering. The table below assumes: Scenario A) 25% of the maximum number of our public shares are redeemed, Scenario B) 50% of the maximum number of our public shares are redeemed, Scenario C) 75% of maximum number of our public shares are redeemed, and Scenario D) 100% of maximum number of our public shares are redeemed.

<div align='center'>As of November 30, 2024</div>

|                                                                                             |     | Without Over-Allotment Option 
 Exercised                     
 Scenario A                    
 25% of maximum redemptions    |      |     | Scenario B                 
 50% of maximum redemptions |      |     | Scenario C                 
 75% of maximum redemptions |      |     | Scenario D          
 maximum redemptions |       |   |
|:--------------------------------------------------------------------------------------------|:----|:------------------------------|-----:|:----|:---------------------------|-----:|:----|:---------------------------|-----:|:----|:--------------------|------:|:--|
| Offering price of $8.33 included in the units (adjusted to include the value of the rights) |     | $                             | 8.33 |     | $                          | 8.33 |     | $                          | 8.33 |     | $                   |  8.33 |   |
| Pro forma net tangible book value per share, as adjusted*                                   |     | $                             | 5.41 |     | $                          | 4.36 |     | $                          | 2.68 |     | $                   | (0.40 | ) |
| Dilution to public shareholders                                                             |     | $                             | 2.92 |     | $                          | 3.97 |     | $                          | 5.65 |     | $                   |  8.73 |   |

| * | The pro forma net tangible book value per share after the offering is calculated as follows: |

| Numerator:                                                                    |     |   |             |   |     |   |             |   |     |   |             |   |     |   |             |   |
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