$MAIN·8-K

Main Street Capital CORP · Apr 9, 5:06 PM ET

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Main Street Capital CORP 8-K

Research Summary

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Main Street Capital Files 8-K for $150M Series A Senior Notes Offering

What Happened
Main Street Capital Corporation (MAIN) announced on April 8–9, 2026 that it entered a Master Note Purchase Agreement to issue $150,000,000 of 6.93% Series A Senior Notes due April 15, 2031. Interest is fixed at 6.93% annually, payable semiannually on April 15 and October 15, beginning October 15, 2026. The issuance was completed in a private placement under Section 4(a)(2) of the Securities Act, and the notes are general unsecured obligations that rank pari passu with Main Street’s other unsecured, unsubordinated debt.

Key Details

  • Principal: $150,000,000 of 6.93% Series A Senior Notes due April 15, 2031.
  • Interest/payments: 6.93% fixed rate; payments semiannually on April 15 and October 15, first payment Oct 15, 2026.
  • Redemption/prepayment: Main Street may redeem at par plus accrued interest (and if applicable, a make-whole premium); must offer prepayment at par in certain change-in-control events.
  • Terms/covenants: Notes are unsecured and pari passu with other unsecured debt; the purchase agreement includes customary affirmative/negative covenants (e.g., reporting, maintaining BDC status, minimum asset coverage and consolidated net worth). Interest rate can increase if certain credit or coverage events occur (e.g., Below Investment Grade, Secured Debt Ratio, Unsecured Debt Coverage events).
  • Use of proceeds: To repay outstanding debt (including corporate and special purpose vehicle revolvers), make investments per strategy, invest idle funds/marketable securities, pay operating expenses and for general corporate purposes.

Why It Matters
This transaction increases Main Street’s unsecured long-term debt by $150M at a fixed 6.93% rate, which will affect interest expense and leverage. Proceeds are targeted to pay down revolver balances and fund investments, which could change the company’s liquidity profile and capital structure. Investors should note the notes are unsecured (no specific collateral), rank equally with other unsecured debt, and include covenants and triggers that can raise the interest rate if certain credit or coverage metrics deteriorate.