Main Street Capital (NYSE: MAIN) insider adds via DRIP shares

Rhea-AI Filing Summary

Main Street Capital Corp.'s President, CIO and Senior Managing Director David L. Magdol reported small automatic share acquisitions through a dividend reinvestment plan. On December 15, 2025, he acquired 55.0695 shares of common stock at $60.3105 per share and 50.16 shares at $62.05 per share. On December 29, 2025, he acquired an additional 60.502 shares at $60.77 per share. Following the latest transaction, he directly beneficially owned about 404,686.1692 shares of Main Street Capital common stock. The filing notes these acquisitions were made under a dividend reinvestment plan in a transaction type that is exempt from Section 16 under Rule 16a-11, meaning dividends were automatically used to purchase additional shares.

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^*

Magdol David L.

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	PRESIDENT, CIO AND SMD

3. Date of Earliest Transaction (Month/Day/Year)
12/15/2025

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	12/15/2025		J(1)	V	55.0695	A	$60.3105	404,575.5072	D
Common Stock	12/15/2025		J(1)	V	50.16	A	$62.05	404,625.6672	D
Common Stock	12/29/2025		J(1)	V	60.502	A	$60.77	404,686.1692	D

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.

	/s/ Jason B. Beauvais, Attorney-in-Fact	01/13/2026
	** 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.
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FAQ

What insider transaction did MAIN’s David L. Magdol report on this Form 4?

David L. Magdol, President, CIO and Senior Managing Director of Main Street Capital Corp., reported acquiring small amounts of common stock through a dividend reinvestment plan on December 15, 2025 and December 29, 2025.

How many Main Street Capital (MAIN) shares did David L. Magdol acquire under the dividend reinvestment plan?

He acquired 55.0695 shares at $60.3105 and 50.16 shares at $62.05 on December 15, 2025, and 60.502 shares at $60.77 on December 29, 2025 under the dividend reinvestment plan.

How many MAIN shares does David L. Magdol own after these dividend reinvestment transactions?

After the December 29, 2025 transaction, David L. Magdol directly beneficially owned about 404,686.1692 shares of Main Street Capital common stock.

What is the nature of the transactions reported by David L. Magdol in MAIN stock?

The transactions are coded as J and, according to the explanation, represent shares acquired under a dividend reinvestment plan, where cash dividends are automatically used to buy additional shares.

Are David L. Magdol’s Main Street Capital dividend reinvestment transactions exempt from Section 16 reporting rules?

The explanation states that the shares were acquired under a dividend reinvestment plan in a transaction exempt from Section 16 under Rule 16a-11, which covers certain dividend reinvestment arrangements.

Does David L. Magdol hold his MAIN shares directly or indirectly after these transactions?

The filing lists his ownership of 404,686.1692 Main Street Capital common shares as Direct (D) beneficial ownership, with no indirect ownership nature specified.