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Fair Value of Financial Instruments - Summary of Company's Assets Measured at Fair Value by Investment Type on a Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Cash and cash equivalents | $ 26,251 | [1],[2],[3] | $ 9,627 | [4],[5],[6]
Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 1,962,131 |  | 1,710,169 |
Fair Value, Recurring |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 1,978,330 |  | 1,725,570 |
Cash and cash equivalents | 26,251 |  | 9,627 |
Derivative Instruments | (317) |  |  |
Total Investments including cash and cash equivalents and derivative instruments | 2,004,264 |  | 1,735,197 |
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Cash and cash equivalents | 26,251 |  | 9,627 |
Total Investments including cash and cash equivalents and derivative instruments | 26,251 |  | 9,627 |
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Derivative Instruments | 317 |  |  |
Total Investments including cash and cash equivalents and derivative instruments | 317 |  |  |
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 1,962,131 |  | 1,710,169 |
Total Investments including cash and cash equivalents and derivative instruments | 1,962,131 |  | 1,710,169 |
Fair Value, Recurring | Measured at Net Asset Value |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 16,199 |  | 15,401 |
Total Investments including cash and cash equivalents and derivative instruments | 16,199 |  | 15,401 |
Fair Value, Recurring | Secured Loans |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 1,491,803 |  | 1,286,668 |
Fair Value, Recurring | Secured Loans | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 1,491,803 |  | 1,286,668 |
Fair Value, Recurring | Equipment Financing |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 342,620 |  | 315,463 |
Fair Value, Recurring | Equipment Financing | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 342,620 |  | 315,463 |
Fair Value, Recurring | Warrants |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 63,660 |  | 51,454 |
Fair Value, Recurring | Warrants | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 63,660 |  | 51,454 |
Fair Value, Recurring | Equity |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 80,247 |  | 71,985 |
Fair Value, Recurring | Equity | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | 64,048 |  | 56,584 |
Fair Value, Recurring | Equity | Measured at Net Asset Value |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total Investments at fair value | $ 16,199 |  | $ 15,401 |
[1] | All debt investments are income producing unless otherwise noted. All equity and warrant investments are non-income producing unless otherwise noted. Equipment financed under our equipment financing investments relates to operational equipment essential to revenue production for the portfolio company in the industry noted.
[2] | All portfolio companies are located in North America or Europe. As of June 30, 2025, Trinity Capital Inc. (the "Company") had eight foreign domiciled portfolio companies, four of which are based in Canada and four of which are based in Europe. In total, these foreign domiciled portfolio investments represent 13.8% of total net asset value based on fair value. The Company generally acquires its investments in private transactions exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”). These investments are generally subject to certain limitations on resale and may be deemed to be “restricted securities” under the Securities Act.
[3] | Except as noted, all investments were valued at fair value as determined in good faith by the Company’s Board of Directors (the “Board”) using Level 3 inputs.
[4] | All debt investments are income producing unless otherwise noted. All equity and warrant investments are non-income producing unless otherwise noted. Equipment financed under our equipment financing investments relates to operational equipment essential to revenue production for the portfolio company in the industry noted.
[5] | All portfolio companies are located in North America or Europe. As of December 31, 2024, Trinity Capital Inc. (the “Company”) had five foreign domiciled portfolio companies, two of which are based in Canada and three of which are based in Europe. In total, these foreign domiciled portfolio investments represent 6.3% of total net asset value based on fair value. The Company generally acquires its investments in private transactions exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”). These investments are generally subject to certain limitations on resale and may be deemed to be “restricted securities” under the Securities Act.
[6] | Except as noted, all investments were valued at fair value as determined in good faith by the Company’s Board of Directors (the “Board”) using Level 3 inputs.

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