v3.26.1
Summary of Significant Accounting Policies - Additional Information (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
Equipment
Loan
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Equipment
Dec. 31, 2024
USD ($)
Loan
Disclosure Of Summary Of Significant Accounting Policies [Line Items]        
Fair value of companies investment percentage 98.70%      
Market index of investment securities $ 0      
Maturity period description original maturity of three months or less      
Total cash, cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows $ 19,631,000 $ 8,386,000 $ 19,110,000 $ 9,627,000
Cash and cash equivalents 19,631,000 [1],[2]   19,110,000 [3],[4]  
Restricted cash 0   $ 0  
Interest income 900,000 $ 1,500,000    
Dividend income $ 4,600,000      
Debt security payment due 90 days      
Number of portfolio companies loans | Loan 4     3
Number of portfolio companies equipment financing | Equipment 1   1  
Non accrual cost $ 41,200,000   $ 20,700,000  
Fair value $ 24,400,000   $ 15,200,000  
Fair value of debt investment portfolio 1.10%   0.70%  
Investment percentage 16.00% 15.90%    
Percentage of net tax- exempt income 90.00%      
Uncertain tax position $ 0   $ 0  
Nondeductible federal excise tax 4.00%      
Ordinary income percentage 98.00%      
Capital gain net income percentage 98.20%      
Excise tax 4.00%      
Control Investments        
Disclosure Of Summary Of Significant Accounting Policies [Line Items]        
Dividend income $ 3,700,000      
Affiliate Investments        
Disclosure Of Summary Of Significant Accounting Policies [Line Items]        
Dividend income 900,000 $ 800,000    
Goldman Sachs Financial Square Government Institutional Fund        
Disclosure Of Summary Of Significant Accounting Policies [Line Items]        
Cash and cash equivalents $ 500,000   $ 100,000  
Minimum        
Disclosure Of Summary Of Significant Accounting Policies [Line Items]        
Cash and cash equivalents interest rate 3.00%      
Investment percentage 90.00%      
Maximum        
Disclosure Of Summary Of Significant Accounting Policies [Line Items]        
Cash and cash equivalents interest rate 6.00%      
[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 March 31, 2026, Trinity Capital Inc. (the “Company”) had eleven foreign domiciled portfolio companies, four of which are based in Canada and seven of which are based in Europe. As of March 31, 2026, these foreign domiciled portfolio investments represented 15.4% 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] 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.
[4] All portfolio companies are located in North America or Europe. As of December 31, 2025, Trinity Capital Inc. (the “Company”) had ten foreign domiciled portfolio companies, four of which are based in Canada and six of which are based in Europe. As of December 31, 2025, these foreign domiciled portfolio investments represented 15.2% 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.