[Form 4] Main Street Capital Corporation Insider Trading Activity

Rhea-AI Filing Summary

Main Street Capital reporting person Dwayne L. Hyzak (a director and CEO) acquired 320.365 shares of Main Street Capital common stock on 08/15/2025 under the issuer's dividend reinvestment plan at an implied price of $67.15 per share. Following the transaction, the reporting person beneficially owns 449,675.6076 shares. The filing states the shares were acquired pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11. The Form 4 was signed by an attorney-in-fact on behalf of the reporting person on 09/02/2025.

Positive

• Insider increased ownership by 320.365 shares, aligning executive interests with shareholders
• Acquisition executed through DRIP, indicating a structured reinvestment of dividends rather than opportunistic trading

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Insider increased ownership via dividend reinvestment; routine, non-disclosable market-moving impact.

The filing documents a small, routine acquisition of 320.365 shares by the CEO/director through the company's dividend reinvestment plan. This method is common for insiders electing to reinvest cash dividends into additional shares and is reported to satisfy Section 16 transparency. The transaction is exempt under Rule 16a-11, indicating it was automatic and not opportunistic trading. The change modestly increases insider alignment with shareholders but is not material relative to institutional holdings or outstanding shares based solely on this filing.

Securities Analyst

TL;DR: Small-scale acquisition via DRIP; no immediate valuation or liquidity implications evident from the Form 4 alone.

The acquisition price shown, $67.15 per share, reflects the dividend reinvestment price on the transaction date. A post-transaction beneficial ownership of 449,675.6076 shares is disclosed, but the filing does not state total outstanding shares or percent ownership, so materiality cannot be quantified here. Because the purchase arises from dividend reinvestment and is Rule 16a-11 exempt, it represents a passive increase in holdings rather than an active market purchase, limiting near-term market-significance.

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
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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^*

Hyzak Dwayne 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)

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

3. Date of Earliest Transaction (Month/Day/Year)
08/15/2025

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	08/15/2025		J(1)	V	320.365	A	$67.15	449,675.6076	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	09/02/2025
	** 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 change in holdings did MAIN reporting person Dwayne L. Hyzak report?

The reporting person acquired 320.365 shares, bringing beneficial ownership to 449,675.6076 shares.

How and when were the MAIN shares acquired?

The shares were acquired on 08/15/2025 under the issuer's dividend reinvestment plan and are exempt under Rule 16a-11.

At what price were the MAIN shares reported acquired?

The transaction lists an implied price of $67.15 per share.

What is Dwayne L. Hyzak's role at MAIN as reported on the Form 4?

The filing identifies him as a Director and CEO, SMD of Main Street Capital.

Who signed the Form 4 and when?

The Form 4 was signed by Jason B. Beauvais, Attorney-in-Fact on 09/02/2025.