Main Street Capital has completed a $39.3 million investment in Midstream Valve Partners to facilitate a minority recapitalisation of the Texas-based business.
Main Street partnered with the company's founder on the transaction.
The investment combines first-lien senior secured term debt with a direct minority equity investment.
Energy-infrastructure supply chain
Founded in 2019 and headquartered in Tomball, Texas, Midstream Valve Partners distributes valves, actuators and related flow-control equipment.
Its customers include midstream pipeline operators, engineering, procurement and construction firms, fabricators and distributors serving energy infrastructure, pipelines and refining.
The transaction therefore provides exposure to the supply chain supporting physical energy infrastructure rather than direct ownership of commodity production.
Debt and equity in one transaction
The structure is particularly relevant to investors following private credit because Main Street is providing both secured debt and minority equity.
Hybrid structures can allow capital providers to participate at different points in a company's capital structure while providing businesses with financing tailored to a specific transaction.
For lower-middle-market companies, these arrangements can be used for recapitalisations, acquisitions, growth investment or ownership transitions.
For family offices and institutional investors, the transaction illustrates the breadth of the private-credit opportunity set beyond conventional corporate lending.
The underlying credit analysis remains critical: security, leverage, cash generation, industry exposure and the borrower's ability to service debt all remain central to risk assessment.
Main Street Capital Corporation announcement, 18 August 2026.