Main Street Capital Corporation: preliminary results for Sep 30, 2026 quarter

What happened

• On Oct 15, 2026, Main Street Capital Corporation reported that it issued a press release announcing certain preliminary estimates of its financial condition and results of operations for its fiscal quarter ended Sep 30, 2026.
• The press release is attached to the Form 8-K as Exhibit 99.1 and is incorporated by reference; information on the company’s website referred to in the press release is not incorporated by reference.

Key details

• Press release date: Oct 15, 2026.
• Fiscal quarter covered: quarter ended Sep 30, 2026.
• Exhibit: press release filed as Exhibit 99.1.
• Filing signed by Jason B. Beauvais, General Counsel, dated Oct 15, 2026.

Why it may matter

• The Form 8-K reports Item 2.02 (results of operations and financial condition), which covers preliminary estimates of the company’s financial condition and results for the quarter ended Sep 30, 2026.
• This filing does not show why the insider traded or why the company acted.