[Form 4] Main Street Capital Corporation Insider Trading Activity

Rhea-AI Filing Summary

Reporting person Jon Kevin Griffin, a director of Main Street Capital Corporation (MAIN), reported purchases on 08/15/2025 executed under a dividend reinvestment plan. The Form 4 shows two non-derivative acquisitions: 15.769 shares at $67.15 and 178.87 shares at $66.10, both marked as acquisitions through a dividend reinvestment transaction exempt under Rule 16a-11. The filing lists beneficial ownership following the transactions as 68,847.61 and 69,026.48 shares, respectively, held directly. The form is signed by an attorney-in-fact, Jason B. Beauvais, dated 09/02/2025.

Insights

Financial Analyst

TL;DR: Routine dividend reinvestment purchases by a director; immaterial to company valuation but shows ongoing insider participation.

The reported transactions are small, automatic acquisitions via the issuer's dividend reinvestment plan on 08/15/2025: 15.769 shares at $67.15 and 178.87 shares at $66.10. These purchases are exempt under Rule 16a-11 and are recorded as direct beneficial ownership. This disclosure is standard for insiders participating in a DRIP and does not indicate a discretionary open-market purchase or a change in executive views. For investors, the activity confirms continued insider reinvestment of dividends but is unlikely to be material given the absolute share counts relative to typical market floats.

Corporate Governance Expert

TL;DR: Proper disclosure of dividend reinvestment acquisitions; governance process appears followed with attorney-in-fact signature.

The Form 4 documents compliance with Section 16 reporting by a director, specifying the Rule 16a-11 exemption for dividend reinvestment plan transactions. The form shows the transactions were reported and signed by an authorized attorney-in-fact on 09/02/2025, which aligns with procedural requirements for timely electronic filings. There are no indications of unexpected or large insider trades, related-party transfers, or changes in control. From a governance perspective, the filing is routine and complete as presented.

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^*

Griffin Jon Kevin

(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)
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	15.769	A	$67.15	68,847.61	D
Common Stock	08/15/2025		J(1)	V	178.87	A	$66.1	69,026.48	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 transactions did MAIN director Jon Kevin Griffin report on the Form 4?

The Form 4 reports two dividend reinvestment acquisitions on 08/15/2025: 15.769 shares at $67.15 and 178.87 shares at $66.10.

Were these purchases made under a dividend reinvestment plan (DRIP)?

Yes. The filing states the shares were acquired under a dividend reinvestment plan and are exempt under Rule 16a-11.

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

The Form 4 lists beneficial ownership following the transactions as 68,847.61 and 69,026.48 shares (direct holdings) for the respective line items.

Who signed the Form 4 and when was it signed?

The form was signed by attorney-in-fact Jason B. Beauvais on 09/02/2025.

Does this Form 4 indicate any derivative or exercised options activity?

No. Table II for derivative securities contains no reported transactions; only non-derivative common stock acquisitions are shown.