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

Reporting relationship: Director
Issuer ticker: MAIN
Reported as of: 15 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 14 Aug 2026, 16:30:08 UTC
Prior SEC filing: 20 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Jason B. Beauvais, Attorney-in-Fact

Key filing fact

Vincent D. Foster filed Form 4 for Main Street Capital CORP (MAIN) on 14 Aug 2026.

Key facts

This page summarizes Vincent D. Foster's Form 4 filing for Main Street Capital CORP (MAIN).
15 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 14 Aug 2026, 16:30.

Change

Previous filing in this sequence was filed on 20 May 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: 14 Aug 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: $52.02^*
Shares after: 1,672,871
Date: 15 Jun 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +1,161
Change %: +0.07%
Price: $52.02^*
Shares after: 1,674,032
Date: 15 Jun 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +17
Change %: +0%
Price: $51.01^*
Shares after: 1,674,049
Date: 29 Jun 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +1,373
Change %: +0.08%
Price: $51.01^*
Shares after: 1,675,422
Date: 29 Jun 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +14
Change %: +0%
Price: $53.09^*
Shares after: 1,675,436
Date: 15 Jul 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +1,172
Change %: +0.07%
Price: $53.09^*
Shares after: 1,676,609
Date: 15 Jul 2026
Ownership: Direct
Footnotes: F1

MAIN transaction

Common Stock

Other

Transaction value
Shares: +89
Change %: +0.13%
Price: $52.02^*
Shares after: 70,896
Date: 15 Jun 2026
Ownership: MS Trust I
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +105
Change %: +0.15%
Price: $51.01^*
Shares after: 71,001
Date: 29 Jun 2026
Ownership: MS Trust I
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +90
Change %: +0.13%
Price: $53.09^*
Shares after: 71,091
Date: 15 Jul 2026
Ownership: MS Trust I
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +173
Change %: +0.5%
Price: $52.02^*
Shares after: 34,730
Date: 15 Jun 2026
Ownership: MS Trust II
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +203
Change %: +0.59%
Price: $51.01^*
Shares after: 34,933
Date: 29 Jun 2026
Ownership: MS Trust II
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +174
Change %: +0.5%
Price: $53.09^*
Shares after: 35,106
Date: 15 Jul 2026
Ownership: MS Trust II
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +89
Change %: +0.13%
Price: $52.02^*
Shares after: 70,146
Date: 15 Jun 2026
Ownership: MS Trust III
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +105
Change %: +0.15%
Price: $51.01^*
Shares after: 70,251
Date: 29 Jun 2026
Ownership: MS Trust III
Footnotes: F1, F2

MAIN transaction

Common Stock

Other

Transaction value
Shares: +90
Change %: +0.13%
Price: $53.09^*
Shares after: 70,340
Date: 15 Jul 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 Jun 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