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MSC Income Fund Completes $12.7M Investment to Support UBM–Mystic Merger

Reported by Citybiz
Jan 6, 2026· 2 min read
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Key Takeaways
  • • MSC Income Fund (NYSE: MSIF) deployed $12.7 million into UBM ParentCo to facilitate the merger of United Business Mail with Mystic Logistics Holdings, restructuring its portfolio exposure in the marketing mail logistics sector.
  • • The investment structure combines first lien senior secured term debt and direct minority equity, positioning MSC as both a lender and equity participant in the combined UBM entity following the transaction.
  • • MSC achieved a complete exit from its original Mystic investment—a $2.5 million first lien term loan and $0.7 million equity stake initiated in August 2014—by rolling proceeds into the new UBM structure via co-investment partnership with Main Street Capital Corporation (NYSE: MAIN).
  • • The merged entity combines UBM's marketing mail commingle and postage optimization services with Mystic's consolidation and logistics capabilities, creating a vertically integrated provider positioned to serve large-scale mailers with end-to-end delivery performance solutions.
Summary
MSC Income Fund completed a $12.7 million portfolio investment in UBM ParentCo (United Business Mail) to support the merger with Mystic Logistics Holdings, an existing MSC portfolio company. The transaction reflects a strategic consolidation within the marketing mail logistics sector, with MSC partnering alongside existing management teams and Main Street Capital Corporation to structure the deal. The new investment comprises a combination of first lien senior secured term debt and direct minority equity, establishing MSC as both a creditor and equity holder in the combined entity.

The merger pairs two complementary service providers. UBM operates as a leading marketing mail commingle specialist, leveraging a nationwide logistics network and technology-driven processes to optimize postage, transportation, and delivery performance for large-scale mailers. Mystic brings expertise in marketing mail consolidation and logistics, with particular strength in precision date-driven in-home delivery performance through transportation planning and mail flow optimization. The combined platform is designed to offer clients integrated solutions spanning cost efficiency, speed-to-market improvements, and delivery visibility across marketing mail programs.

From an investment continuity perspective, MSC fully exited its original Mystic position through the merger transaction. The Fund's initial Mystic investment, structured in August 2014 as a co-investment with Main Street Capital, consisted of a $2.5 million first lien senior secured term loan and a $0.7 million direct equity stake. Rather than harvesting proceeds, MSC redeployed capital into the UBM merger vehicle, maintaining exposure to the underlying logistics and mail services business while achieving a structural upgrade through the combination of two market participants. This approach reflects typical middle-market private credit strategy, where fund managers use exit events to reinvest in higher-conviction consolidation opportunities within existing portfolio sectors.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Citybiz MSC Income Fund Completes $12.7M Investment to Support UBM–Mystic Merger