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Investments | 3 Months Ended
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Mar. 31, 2025
Schedule of Investments [Abstract] |
Investments | Investments Control and Affiliate Investments As required by the 1940 Act, the Company classifies its investments by level of control. “Control investments” are defined in the 1940 Act as investments in those companies that the Company is deemed to “control”. Under the 1940 Act, the Company is generally deemed to “control” a company in which it has invested if it owns 25% or more of the voting securities of such company or has greater than 50% representation on its board. “Affiliate investments” are investments in those companies that are “affiliated companies” of the Company, as defined in the 1940 Act, which are not control investments. The Company is deemed to be an “affiliate” of a company in which it has invested if it owns 5% or more, but generally less than 25%, of the voting securities of such company. “Non-control/non-affiliate investments” are investments that are neither control investments nor affiliate investments. For purposes of determining the classification of its investments, the Company has included consideration of any voting securities or board appointment rights held by the Adviser Funds. The following table summarizes the Company’s realized gains and losses and changes in unrealized appreciation and depreciation on control and affiliate investments for the three months ended March 31, 2025 and 2024.
(in thousands) |  | For the Three Months Ended March 31, 2025 |  |
Portfolio Company(1) |  | Type |  | Fair Value as of March 31, 2025 |  | Interest & Dividend Income |  | Fee Income |  | Net Change in Unrealized Appreciation (Depreciation) |  | Realized Gain (Loss) |  |  |  |  |  |  |  |
Control Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Coronado Aesthetics, LLC |  | Control |  | $ | 47 |  |  | $ | — |  |  | $ | — |  |  | $ | (22) |  |  | $ | — |  |  |  |  |  |  |  |  |
Gibraltar Acquisition LLC(2) |  | Control |  | 58,900 |  |  | 1,567 |  |  | 39 |  |  | (941) |  |  | — |  |  |  |  |  |  |  |  |
Hercules Adviser LLC(3) |  | Control |  | 45,017 |  |  | 1,900 |  |  | — |  |  | 2,827 |  |  | — |  |  |  |  |  |  |  |  |
Tectura Corporation |  | Control |  | 11,770 |  |  | 170 |  |  | — |  |  | 113 |  |  | — |  |  |  |  |  |  |  |  |
Total Control Investments |  | $ | 115,734 |  |  | $ | 3,637 |  |  | $ | 39 |  |  | $ | 1,977 |  |  | $ | — |  |  |  |  |  |  |  |  |
(in thousands) |  | For the Three Months Ended March 31, 2024 |  |
Portfolio Company(1) |  | Type |  | Fair Value as of March 31, 2024 |  | Interest & Dividend Income |  | Fee Income |  | Net Change in Unrealized Appreciation (Depreciation) |  | Realized Gain (Loss) |  |  |  |  |  |  |  |
Control Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Coronado Aesthetics, LLC |  | Control |  | $ | 283 |  |  | $ | — |  |  | $ | — |  |  | $ | 21 |  |  | $ | — |  |  |  |  |  |  |  |  |
Gibraltar Acquisition, LLC(2) |  | Control |  | 57,931 |  |  | 1,033 |  |  | 36 |  |  | (4,621) |  |  | — |  |  |  |  |  |  |  |  |
Hercules Adviser LLC(3) |  | Control |  | 41,884 |  |  | 1,752 |  |  | — |  |  | 1,171 |  |  | — |  |  |  |  |  |  |  |  |
Tectura Corporation |  | Control |  | 12,117 |  |  | 172 |  |  | — |  |  | 600 |  |  | — |  |  |  |  |  |  |  |  |
Total Control Investments |  | $ | 112,215 |  |  | $ | 2,957 |  |  | $ | 36 |  |  | $ | (2,829) |  |  | $ | — |  |  |  |  |  |  |  |  |
(1)In accordance with Rules 3-09, 4-08(g), and Rule 10-01(b)(1) of Regulation S-X, (“Rule 3-09”, “Rule 4-08(g)”, and “Rule 10-01(b)(1)”, respectively), the Company must determine if its unconsolidated subsidiaries are considered “significant subsidiaries”. As of March 31, 2025 and March 31, 2024, there were no unconsolidated subsidiaries that are considered “significant subsidiaries”. (2)Gibraltar Acquisition LLC is a wholly-owned subsidiary, which is the holding company for their wholly-owned affiliated portfolio companies, Gibraltar Business Capital, LLC and Gibraltar Equipment Finance, LLC. The subsidiary has no significant assets or liabilities, other than their equity and debt investments and equity interest in Gibraltar Business Capital, LLC and Gibraltar Equipment Finance, LLC, respectively. (3)Hercules Adviser LLC is owned by Hercules Capital Management LLC and presented with Hercules Partner Holdings, LLC which are both wholly owned by the Company. Please refer to “Note 1 - Description of Business” for additional disclosure. Portfolio Composition The following table shows the fair value of the Company’s portfolio of investments by asset class as of March 31, 2025 and December 31, 2024:
(in thousands) | March 31, 2025 |  | December 31, 2024
| Investments at Fair Value |  | Percentage of Total Portfolio |  | Investments at Fair Value |  | Percentage of Total Portfolio
Senior Secured Debt | $ | 3,674,498 |  |  | 93.6 | % |  | $ | 3,419,044 |  |  | 93.4 | %
Unsecured Debt | 64,736 |  |  | 1.7 | % |  | 75,557 |  |  | 2.1 | %
Preferred Stock | 52,662 |  |  | 1.3 | % |  | 53,802 |  |  | 1.5 | %
Common Stock | 94,088 |  |  | 2.4 | % |  | 74,855 |  |  | 2.0 | %
Warrants | 31,473 |  |  | 0.8 | % |  | 30,500 |  |  | 0.8 | %
Investment Funds & Vehicles | 6,993 |  |  | 0.2 | % |  | 6,220 |  |  | 0.2 | %
Total | $ | 3,924,450 |  |  | 100.0 | % |  | $ | 3,659,978 |  |  | 100.0 | %
A summary of the Company’s investment portfolio, at value, by geographic location as of March 31, 2025 and December 31, 2024 is shown as follows:
(in thousands) | March 31, 2025 |  | December 31, 2024
| Investments at Fair Value |  | Percentage of Total Portfolio |  | Investments at Fair Value |  | Percentage of Total Portfolio
United States | $ | 3,489,550 |  |  | 88.9 | % |  | $ | 3,288,737 |  |  | 89.9 | %
Netherlands | 132,889 |  |  | 3.4 | % |  | 59,157 |  |  | 1.6 | %
United Kingdom | 119,905 |  |  | 3.1 | % |  | 142,183 |  |  | 3.9 | %
Switzerland | 56,421 |  |  | 1.5 | % |  | — |  |  | 0.0 | %
Germany | 49,417 |  |  | 1.3 | % |  | 49,255 |  |  | 1.3 | %
Israel | 44,321 |  |  | 1.1 | % |  | 88,066 |  |  | 2.4 | %
Canada | 16,229 |  |  | 0.4 | % |  | 16,251 |  |  | 0.4 | %
Denmark | 9,111 |  |  | 0.2 | % |  | 9,284 |  |  | 0.3 | %
Ireland | 4,647 |  |  | 0.1 | % |  | 4,649 |  |  | 0.1 | %
Singapore | 1,590 |  |  | 0.0 | % |  | 1,996 |  |  | 0.1 | %
Other | 370 |  |  | 0.0 | % |  | 400 |  |  | 0.0 | %
Total | $ | 3,924,450 |  |  | 100.0 | % |  | $ | 3,659,978 |  |  | 100.0 | %
The following table shows the fair value of the Company’s portfolio by industry sector as of March 31, 2025 and December 31, 2024:
(in thousands) | March 31, 2025 |  | December 31, 2024
| Investments at Fair Value |  | Percentage of Total Portfolio |  | Investments at Fair Value |  | Percentage of Total Portfolio
Software | $ | 1,262,813 |  |  | 32.2 | % |  | $ | 1,081,100 |  |  | 29.5 | %
Drug Discovery & Development | 1,119,941 |  |  | 28.5 | % |  | 1,080,390 |  |  | 29.5 | %
Healthcare Services, Other | 625,556 |  |  | 15.9 | % |  | 610,184 |  |  | 16.7 | %
Consumer & Business Services | 374,561 |  |  | 9.6 | % |  | 372,641 |  |  | 10.2 | %
Electronics & Computer Hardware | 167,370 |  |  | 4.3 | % |  | 162,888 |  |  | 4.5 | %
Diversified Financial Services | 117,366 |  |  | 3.0 | % |  | 113,491 |  |  | 3.1 | %
Medical Devices & Equipment | 75,238 |  |  | 1.9 | % |  | 74,962 |  |  | 2.0 | %
Space Technologies | 49,527 |  |  | 1.3 | % |  | 45,700 |  |  | 1.2 | %
Biotechnology Tools | 34,819 |  |  | 0.9 | % |  | 35,434 |  |  | 1.0 | %
Communications & Networking | 27,601 |  |  | 0.7 | % |  | 27,700 |  |  | 0.8 | %
Information Services | 24,923 |  |  | 0.6 | % |  | 24,356 |  |  | 0.7 | %
Sustainable and Renewable Technology | 22,396 |  |  | 0.6 | % |  | 27,696 |  |  | 0.8 | %
Manufacturing Technology | 20,653 |  |  | 0.5 | % |  | 1,162 |  |  | 0.0 | %
Consumer & Business Products | 1,139 |  |  | 0.0 | % |  | 1,497 |  |  | 0.0 | %
Semiconductors | 425 |  |  | 0.0 | % |  | 704 |  |  | 0.0 | %
Media/Content/Info | 114 |  |  | 0.0 | % |  | 63 |  |  | 0.0 | %
Drug Delivery | 8 |  |  | 0.0 | % |  | 10 |  |  | 0.0 | %
Total | $ | 3,924,450 |  |  | 100.0 | % |  | $ | 3,659,978 |  |  | 100.0 | %
No single portfolio investment represents more than 10% of the fair value of the Company’s total investments as of March 31, 2025 or December 31, 2024. Concentrations of Credit Risk The Company’s customers are primarily privately held companies and public companies which are active in the “Software”, “Drug Discovery & Development”, “Healthcare Services, Other”, and “Consumer & Business Services” sectors. These sectors are characterized by high margins, high growth rates, consolidation and product and market extension opportunities. Value for companies in these sectors is often vested in intangible assets and intellectual property. Industry and sector concentrations vary as new loans are recorded and loans are paid off. Investment income, consisting of interest, fees, and recognition of gains on equity and warrant or other equity interests, can fluctuate materially when a loan is paid off or a related warrant or equity interest is sold. Investment income recognized in any given year can be highly concentrated among several portfolio companies. As of March 31, 2025 and December 31, 2024, the Company’s ten largest portfolio companies represented approximately 30.4% and 31.6% of the total fair value of the Company’s investments in portfolio companies, respectively. As of March 31, 2025 and December 31, 2024, the Company had six and six portfolio companies, respectively, that represented 5% or more of the Company’s net assets. As of March 31, 2025, the Company had four equity investments representing 61.3% of the total fair value of the Company's equity investments, and each represented 5% or more of the total fair value of the Company’s equity investments. As of December 31, 2024, the Company had three equity investments which represented approximately 49.7% of the total fair value of the Company’s equity investments, and each represented 5% or more of the total fair value of the Company’s equity investments. Investment Collateral In the majority of cases, the Company collateralizes its investments by obtaining a first priority security interest in a portfolio company’s assets, which may include its intellectual property. In other cases, the Company may obtain a negative pledge covering a company’s intellectual property. The Company's investments were collateralized as follows as of March 31, 2025 and December 31, 2024:
| Percentage of debt investments (at fair value), as of
| March 31, 2025 |  | December 31, 2024
Senior Secured First Lien |  |  |
All assets including intellectual property | 69.0 | % |  | 67.1 | %
All assets with negative pledge on intellectual property | 13.8 | % |  | 14.2 | %
“Last-out” with security interest in all of the assets | 8.1 | % |  | 9.7 | %
Total senior secured first lien position | 90.9 | % |  | 91.0 | %
Second lien | 7.4 | % |  | 6.8 | %
Unsecured | 1.7 | % |  | 2.2 | %
Total debt investments at fair value | 100.0 | % |  | 100.0 | %
Derivative Instruments The Company enters into forward currency contracts from time to time to help mitigate the impact that an adverse change in foreign exchange rates would have on the value of the Company’s investments denominated in foreign currencies. The following is a summary of the fair value and location of the Company’s derivative instruments in the Consolidated Statements of Assets and Liabilities held as of March 31, 2025 and December 31, 2024:
(in thousands) |  | Fair Value
Derivative Instrument | Statement Location |  | March 31, 2025 |  | December 31, 2024
Foreign currency forward contract | Other assets |  | $ | — |  |  | $ | 538 |
Foreign currency forward contract | Accounts payable and accrued liabilities |  | 301 |  |  | — |
| Total |  | $ | 301 |  |  | $ | 538 |
Net realized and unrealized gains and losses on derivative instruments recorded by the Company during the three months ended March 31, 2025 and 2024 are in the following locations in the Consolidated Statements of Operations:
(in thousands) |  |  | Three Months Ended March 31, |  |
Derivative Instrument | Statement Location |  | 2025 |  | 2024 |  |  |  |
Foreign currency forward contract | Net change in unrealized appreciation (depreciation) - Non-control / Non-affiliate investments |  | $ | (840) |  |  | $ | 229 |  |  |  |  |
| Total |  | $ | (840) |  |  | $ | 229 |  |  |  |  |
Investment Income The Company’s investment portfolio generates interest, fee, and dividend income. The composition of the Company’s interest income and fee income is as follows:
(in thousands) | Three Months Ended March 31, |  |
| 2025 |  | 2024 |  |  |  |
Contractual interest income | $ | 87,817 |  |  | $ | 90,714 |  |  |  |  |
Exit fee interest income | 10,228 |  |  | 11,880 |  |  |  |  |
PIK interest income | 13,473 |  |  | 9,897 |  |  |  |  |
Dividend income | 2,400 |  |  | 1,600 |  |  |  |  |
Other investment income(1) | 1,654 |  |  | 1,688 |  |  |  |  |
Total interest and dividend income | $ | 115,572 |  |  | $ | 115,779 |  |  |  |  |
Recurring fee income | $ | 2,680 |  |  | $ | 2,455 |  |  |  |  |
Fee income - expired commitments | 317 |  |  | 647 |  |  |  |  |
Accelerated fee income - early repayments | 942 |  |  | 2,672 |  |  |  |  |
Total fee income | $ | 3,939 |  |  | $ | 5,774 |  |  |  |  |
(1)Other investment income includes OID interest income and interest recorded on other assets. As of March 31, 2025 and December 31, 2024, unamortized capitalized fee income was recorded as follows:
(in millions) | March 31, 2025 |  | December 31, 2024
Offset against debt investment cost | $ | 37.2 |  |  | $ | 36.9 |
Deferred obligation contingent on funding or other milestone | 10.2 |  |  | 9.1 |
Total Unamortized Fee Income | $ | 47.4 |  |  | $ | 46.0 |
As of March 31, 2025 and December 31, 2024, loan exit fees receivable were recorded as follows:
(in millions) | March 31, 2025 |  | December 31, 2024
Included within debt investment cost | $ | 41.5 |  |  | $ | 39.2 |
Deferred receivable related to expired commitments | 2.9 |  |  | 3.0 |
Total Exit Fees Receivable | $ | 44.4 |  |  | $ | 42.2 |

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