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Noncontrolling Interests (Tables) | 9 Months Ended
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Sep. 30, 2025
Noncontrolling Interest [Abstract] |
Summary Ownership of Viant Technology LLC | The following table summarizes the ownership of Viant Technology LLC:
| As of September 30, 2025 |  | As of December 31, 2024
Owner | Units Owned |  | Ownership Percentage |  | Units Owned |  | Ownership Percentage
Viant Technology Inc. | 16,648,444 |  | 26.7 | % |  | 16,368,452 |  | 25.9 | %
Noncontrolling interests | 45,754,716 |  | 73.3 | % |  | 46,753,841 |  | 74.1 | %
Total | 62,403,160 |  | 100.0 | % |  | 63,122,293 |  | 100.0 | %
Summary of Effect of Changes in Ownership Interest in Viant Technology LLC on Equity | The following table presents the effect of changes in the Company’s ownership interest in Viant Technology LLC on the Company’s equity for the periods indicated:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Net income attributable to Viant Technology Inc. | $ | 996 |  |  | $ | 1,507 |  |  | $ | 96 |  |  | $ | 615 |
Transfers to noncontrolling interests: |  |  |  |  |  |  |
Decrease in the additional-paid-in-capital of Viant Technology Inc. resulting from ownership changes in Viant Technology LLC | (2,808) |  |  | (3,974) |  |  | (11,318) |  |  | (7,554) |
Change from net income attributable to Viant Technology Inc. and transfers to noncontrolling interests | $ | (1,812) |  |  | $ | (2,467) |  |  | $ | (11,222) |  |  | $ | (6,939) |

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- Definition The tabular disclosure of the effects of any changes in a parent's ownership interest in a subsidiary on the equity attributable to the parent if the ownership interests in a subsidiary changes during the period. The changes represented by this element did not result in the deconsolidation of the subsidiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4M -Publisher FASB -URI https://asc.fasb.org/1943274/2147481175/810-10-55-4M Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -SubTopic 10 -Topic 810 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-1A + Details
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