[Form 4] Main Street Capital Corporation Insider Trading Activity

Rhea-AI Filing Summary

Main Street Capital Corporation (MAIN) director Brian E. Lane acquired additional common stock through the company's dividend reinvestment plan on 07/15/2025. The Form 4 reports two dividend reinvestment transactions: 51.254 shares acquired at $63.57 per share and 136.54 shares acquired at $63.50 per share. The filings list beneficial ownership amounts following the transactions of 47,385.7128 shares and 47,522.2528 shares, respectively. The reporting person is identified as a director and the transactions are described as exempt under Rule 16a-11 because they resulted from a dividend reinvestment.

The form is signed by an attorney-in-fact on 08/14/2025. No other types of transactions, derivative positions, or amendments are reported in the provided content.

Positive

• Insider reinvestment through the dividend reinvestment plan is disclosed, showing transparent compliance with Section 16 reporting requirements

Negative

• None.

Insights

Financial Analyst

TL;DR: Director reinvested dividends to acquire small incremental share amounts; transactions are routine and disclosed under Section 16.

The Form 4 documents two dividend reinvestment purchases on 07/15/2025 totaling 187.794 shares cumulatively added across two reported entries (51.254 and 136.54 shares) at approximately $63.50 per share and resulting in reported beneficial holdings near 47.5k shares. These purchases are reported under a Rule 16a-11 exempt reinvestment process, indicating automated reinvestment rather than discretionary open-market trades. For investors, this is a routine insider activity that updates beneficial ownership but contains no new operational or financial information about MAIN.

Corporate Governance Expert

TL;DR: Disclosure aligns with Section 16 requirements; signature by attorney-in-fact and Rule 16a-11 citation are properly noted.

The filing identifies Brian E. Lane as a director and shows dividend reinvestment transactions exempt under Rule 16a-11. The presence of an attorney-in-fact signature dated 08/14/2025 is disclosed. The Form 4 reports direct beneficial ownership amounts following the transactions. This is a routine compliance disclosure rather than a governance event; no departures, new grants, or derivative exercises are reported in the provided content.

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^*

Lane Brian E.

(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)
07/15/2025

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	07/15/2025		J(1)	V	51.254	A	$63.57	47,385.7128	D
Common Stock	07/15/2025		J(1)	V	136.54	A	$63.5	47,522.2528	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	08/14/2025
	** 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 transactions did Brian E. Lane report on the MAIN Form 4?

He reported two dividend reinvestment acquisitions on 07/15/2025: 51.254 shares at $63.57 and 136.54 shares at $63.50.

How many shares did the reporting person beneficially own after the transactions?

The Form 4 shows beneficial ownership amounts of 47,385.7128 and 47,522.2528 shares following the reported transactions.

Why were these transactions exempt from Section 16 reporting requirements?

The filings state the shares were acquired under a dividend reinvestment plan and are exempt under Rule 16a-11.

When were the transactions executed and when was the Form 4 signed?

Transactions occurred on 07/15/2025 and the Form 4 was signed by an attorney-in-fact on 08/14/2025.

What relationship does the reporting person have to MAIN?

Brian E. Lane is identified as a director of Main Street Capital Corporation.