New Mountain Guardian III BDC, L.L.C. Stock: price and management transactions · United States · SEC (Form 4)

About New Mountain Guardian III BDC, L.L.C.

New Mountain Guardian III BDC, L.L.C. was a U.S.-based investment vehicle organized as a Delaware limited liability company and designed to operate as a business development company (BDC) under the Investment Company Act of 1940. The company was formed on May 22, 2019, and filed a Form 10 registration statement to support its intended BDC election. Its legal setup followed the standard Delaware framework commonly used by U.S. private credit and investment platforms. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1781870/000110465919063405/a19-22672_1ex3d2.htm)) From an operating perspective, the fund’s stated objective was to generate current income and capital appreciation by investing in or originating first-lien and unitranche leveraged loans. The target portfolio focused on high-quality businesses in non-cyclical industry niches, reflecting a “defensive growth” credit strategy rather than an equity-style growth mandate. Investment management was intended to be handled by New Mountain Finance Advisers BDC, L.L.C., a subsidiary of New Mountain Capital, a U.S. alternative asset manager known for private credit and proprietary research-driven investing. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1781870/000104746919005224/a2239543z10-12ga.htm)) For investors, New Mountain Guardian III BDC, L.L.C. should be viewed as a private credit platform rather than a traditional operating company. Its competitive positioning was based on New Mountain Capital’s underwriting discipline, origination capabilities, and focus on lending to private middle-market borrowers. In the U.S. direct lending ecosystem, that places the company in competition with other BDCs and private credit funds seeking attractive risk-adjusted yields in senior secured and unitranche structures. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1781870/000104746919005224/a2239543z10-12ga.htm)) A major recent development was the company’s merger into New Mountain Private Credit Fund. On October 11, 2024, the two funds entered into an Agreement and Plan of Merger, and the transaction closed on December 17, 2024, with New Mountain Guardian III BDC, L.L.C. merging into the surviving fund. This is the key recent event to highlight, because it materially changes the company’s standalone status and explains why subsequent SEC insider transaction references must be interpreted in a pre-merger context. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1781870/000162828024052092/newmountainguardianiiibdcl.htm)) In short, the company was a U.S. private credit BDC vehicle associated with New Mountain Capital, built around first-lien and unitranche lending to defensive businesses, and tied to the broader U.S. SEC reporting and capital markets framework. It was not a consumer brand or industrial platform; its value proposition was credit selection, income generation, and disciplined underwriting, until its December 2024 merger concluded its standalone lifecycle. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1781870/000162828024052092/newmountainguardianiiibdcl.htm))