Vincent D. Foster - 15 Sep 2026 Form 4 Insider Report for Main Street Capital CORP (MAIN)

Reporting relationship: Director
Issuer ticker: MAIN
Reported as of: 15 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 20 Oct 2026, 16:30:13 UTC
Prior SEC filing: 15 Sep 2026
Source filing: View source filing
Reporting owner signature: /s/ Jason B. Beauvais, Attorney-in-Fact

Filing notes and source

Key filing fact

Vincent D. Foster filed Form 4 for Main Street Capital CORP (MAIN) on 20 Oct 2026.

Key facts

This page summarizes Vincent D. Foster's Form 4 filing for Main Street Capital CORP (MAIN).
10 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 20 Oct 2026, 16:30.

Change

Previous filing in this sequence was filed on 15 Sep 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001069725 Primary reporting owner

FOSTER VINCENT D

Relationship: Director
Address: 1300 POST OAK BLVD, 8TH FLOOR, HOUSTON
Signature: /s/ Jason B. Beauvais, Attorney-in-Fact
Signature date: 20 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MAIN transaction

Common Stock

Other

Transaction value
Shares: +14
Change %: +0%
Price: $56.37^*
Shares after: 1,677,691
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +1,114
Change %: +0.07%
Price: $56.37^*
Shares after: 1,678,805
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +16
Change %: +0%
Price: $55.10^*
Shares after: 1,678,821
Date: 28 Sep 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +1,297
Change %: +0.08%
Price: $55.10^*
Shares after: 1,680,118
Date: 28 Sep 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +85
Change %: +0.12%
Price: $56.37^*
Shares after: 71,257
Date: 15 Sep 2026
Ownership: MS Trust I
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +99
Change %: +0.14%
Price: $55.10^*
Shares after: 71,356
Date: 28 Sep 2026
Ownership: MS Trust I
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +165
Change %: +0.47%
Price: $56.37^*
Shares after: 35,428
Date: 15 Sep 2026
Ownership: MS Trust II
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +192
Change %: +0.54%
Price: $55.10^*
Shares after: 35,620
Date: 28 Sep 2026
Ownership: MS Trust II
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +85
Change %: +0.12%
Price: $56.37^*
Shares after: 70,506
Date: 15 Sep 2026
Ownership: MS Trust III
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +99
Change %: +0.14%
Price: $55.10^*
Shares after: 70,605
Date: 28 Sep 2026
Ownership: MS Trust III
Footnotes: F1, F2

MAIN holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 33,300
Date: 15 Sep 2026
Ownership: MS Trust V
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The reporting person acquired these shares under a dividend reinvestment plan, pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11.

Footnote F2

Family trust