Main Street Capital (NYSE: MAIN) director boosts stake through dividend reinvestment

Rhea-AI Filing Summary

Main Street Capital Corp reported that one of its directors acquired additional shares of common stock through a dividend reinvestment plan. On 11/14/2025, the director received 11.7942 shares at a price of $58.9 per share, bringing direct beneficial ownership to 1,730,773.1346 shares. A second dividend reinvestment on the same date added 1,259.1508 shares at $58.9, increasing direct beneficial ownership to 1,732,032.2854 shares.

The director also reports indirect beneficial ownership of 35,307.4742 shares in MS Trust I, 34,557 shares in MS Trust II, 34,557 shares in MS Trust III, and 33,300 shares in MS Trust V, all described as family trusts. The filing notes that these acquisitions were made under a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

FOSTER VINCENT D

(Last) (First) (Middle)

1300 POST OAK BLVD

8TH FLOOR

(Street)

HOUSTON TX 77056

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Main Street Capital CORP [ MAIN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/14/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/14/2025		J(1)	V	11.7942	A	$58.9	1,730,773.1346	D
Common Stock	11/14/2025		J(1)	V	1,259.1508	A	$58.9	1,732,032.2854	D
Common Stock								35,307.4742	I	MS Trust I(2)
Common Stock								34,557	I	MS Trust II(2)
Common Stock								34,557	I	MS Trust III(2)
Common Stock								33,300	I	MS Trust V(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. Family trust

	/s/ Jason B. Beauvais, Attorney-in-Fact	12/05/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did MAIN report in this Form 4 filing?

The filing shows that a director of Main Street Capital Corp (MAIN) acquired additional common stock on 11/14/2025 through a dividend reinvestment plan, rather than an open-market purchase.

How many Main Street Capital (MAIN) shares does the director now own directly?

After the reported dividend reinvestment transactions, the director directly beneficially owns 1,732,032.2854 shares of Main Street Capital common stock.

At what price were the MAIN shares acquired under the dividend reinvestment plan?

The Form 4 discloses that the director acquired the common stock under a dividend reinvestment plan at a price of $58.9 per share on 11/14/2025.

What is the nature of the transaction reported for Main Street Capital (MAIN)?

The explanation states that the reporting person acquired these shares under a dividend reinvestment plan, in a dividend reinvestment transaction that is exempt from Section 16 under Rule 16a-11.

What indirect holdings in MAIN does the director report through family trusts?

The director reports indirect beneficial ownership of 35,307.4742 shares in MS Trust I, 34,557 shares in MS Trust II, 34,557 shares in MS Trust III, and 33,300 shares in MS Trust V, each described as a family trust.

Does this Main Street Capital (MAIN) Form 4 involve derivative securities?

The Form 4 includes a section for derivative securities, but in this report there are no derivative securities listed as acquired, disposed of, or beneficially owned.