MAIN · NYSE · CIK 0001396440

Main Street Capital CORP

Main Street Capital CORP’s most recent SEC filing in our snapshot is a Form 497AD filed on Oct 27, 2026. Its EDGAR record lists 115 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
—
Net income, FY2025
$493.4M
Form 4 filings on record, past 12 months
115

Company overview

Legal name (as filed)
Main Street Capital CORP
Ticker
MAIN
SEC Central Index Key (CIK)
0001396440
Industry (SIC)
—
Business address
HOUSTON, TX
State or country of incorporation
MD
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#1335 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from Main Street Capital CORP’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
n/aFY2021n/aFY2022n/aFY2023n/aFY2024n/aFY2025
Net income
$330.8MFY2021$241.6MFY2022$428.4MFY2023$508.1MFY2024$493.4MFY2025
MAIN annual results
ItemFY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024		FY2025
ended Dec 31, 2025
Revenue—————
Net income$330.8M$241.6M$428.4M$508.1M$493.4M
Diluted EPS$2.65$3.29$4.04$3.93$3.95
Total assets$3.7B$4.2B$4.4B$5.1B$5.7B
Cash and equivalents$32.6M$49.1M$60.1M$78.3M$42.0M

XBRL tags used: netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

MAIN latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Feb 27, 202610-KAnnual report· period Dec 31, 2025Document · Index
Aug 7, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Oct 15, 20268-KResults of operations· period Oct 15, 2026Document · Index
Mar 23, 2026DEF 14ADefinitive proxy statement· period Mar 23, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about Main Street Capital CORP, by form type:

4 ×318-K ×3497AD ×2144 ×1FWP ×1424B2 ×140-17G ×1
MAIN recent filings
FiledFormWhat it isOriginal
Oct 27, 2026497AD497ADDocument · Index
Oct 27, 2026FWPFWPDocument · Index
Oct 27, 2026424B2Prospectus (pricing supplement)Document · Index
Oct 26, 2026497AD497ADDocument · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 20, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Oct 16, 202640-17G40-17GDocument · Index
Oct 15, 20268-KResults of operations· period Oct 15, 2026Document · Index
Oct 8, 20268-KResults of operations· period Oct 8, 2026Document · Index
Sep 15, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Sep 15, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Sep 15, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Sep 15, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Sep 15, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Sep 15, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Sep 15, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Sep 15, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Sep 15, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Sep 3, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 2, 2026Document · Index
Aug 24, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 21, 2026Document · Index
Aug 21, 2026144Notice of proposed sale of securitiesDocument · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 13, 2026Document · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 15, 2026Document · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 15, 2026Document · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 15, 2026Document · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 15, 2026Document · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 15, 2026Document · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 15, 2026Document · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 15, 2026Document · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 15, 2026Document · Index
Aug 14, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 15, 2026Document · Index
Aug 12, 20268-KMaterial agreement· period Aug 11, 2026Document · Index

Insider filing activity

115 Form 4 filings appear in Main Street Capital CORP’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0001396440 and XBRL company facts. Main Street Capital CORP on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.