MSC INCOME FUND, INC. 8-K

What Happened On June 11, 2026, Main Street Capital Corporation — which wholly owns MSC Income Fund’s investment adviser and administrator, MSC Adviser I, LLC — posted an updated investor presentation on its corporate website in connection with its analysts’ and investors’ day. The presentation includes certain updated information about MSC Income Fund, Inc. (MSIF) and was disclosed under Item 7.01 (Regulation FD Disclosure) of the Form 8-K filed the same day. The presentation will remain available at https://www.mainstcapital.com/investors through at least July 14, 2026.

Key Details

• Date posted: June 11, 2026.
• Posted by: Main Street Capital Corporation (wholly owns MSC Adviser I, LLC).
• Availability: On Main Street’s investor website until at least July 14, 2026 — https://www.mainstcapital.com/investors.
• Filing: Disclosed in MSC Income Fund’s Form 8-K under Item 7.01 (Regulation FD Disclosure).

Why It Matters This filing notifies investors that updated, potentially material information about MSC Income Fund was made public via an investor presentation and was broadly disclosed under Regulation FD. Retail investors can review the presentation on Main Street’s website to see the specific updates about the Fund; the Form 8-K does not itself provide the presentation content or new financial results.