Main Street Capital (NYSE: MAIN) logs dividend reinvestment share transactions

Rhea-AI Filing Summary

Main Street Capital’s president and chief investment officer, David L. Magdol, reported routine dividend reinvestment activity in the company’s common stock. On May 15, 2026, he had two Form 4 transactions coded as “other,” tied to a dividend reinvestment plan exempt from Section 16 under Rule 16a-11.

The transactions covered a combined 133.0127 shares of common stock through the plan. Following these transactions, Magdol’s directly held position was about 440,623.3340 shares of Main Street Capital common stock, indicating a small incremental change relative to his overall holdings.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Magdol David L.

Role PRESIDENT, CIO AND SMD

Type	Security	Shares	Price	Value
Other	Common Stock	68.343	$50.65	$3K
Other	Common Stock	64.67	$50.69	$3K

Holdings After Transaction: Common Stock — 440,623.334 shares (Direct, null)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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 TEXAS 77056

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

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

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

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

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	05/15/2026		J(1)	V	68.3427	A	$50.65	440,623.334	D
Common Stock	05/15/2026		J(1)	V	64.67	A	$50.69	440,688.004	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	05/28/2026
	** 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.
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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider activity did Main Street Capital (MAIN) report for David L. Magdol?

David L. Magdol reported routine transactions under a dividend reinvestment plan. Two “other” transactions on May 15, 2026 involved a combined 133.0127 shares of Main Street Capital common stock, reflecting automatic reinvestment of dividends rather than open-market trading.

How many Main Street Capital (MAIN) shares were involved in Magdol’s latest Form 4?

The Form 4 shows 133.0127 shares of Main Street Capital common stock involved. These came from two dividend reinvestment plan transactions, one for 64.6700 shares and another for 68.3427 shares, both recorded as “other” transactions under SEC code J.

What is David L. Magdol’s Main Street Capital (MAIN) holding after these transactions?

After the reported dividend reinvestment plan transactions, David L. Magdol directly held 440,623.3340 shares of Main Street Capital common stock. This figure comes from the final post-transaction balance disclosed for his non-derivative, directly owned shares on the Form 4.

Were Magdol’s Main Street Capital (MAIN) transactions open-market buys or sells?

The transactions were not open-market buys or sells. They are coded “J” as other acquisitions or dispositions and described in a footnote as shares acquired through a dividend reinvestment plan, which is exempt from Section 16 under Rule 16a-11.

At what prices were the dividend reinvestment shares recorded for Main Street Capital (MAIN)?

The dividend reinvestment plan entries were recorded at $50.6900 and $50.6500 per share. These per-share amounts apply to the 64.6700 and 68.3427 common shares, respectively, as disclosed for Magdol’s May 15, 2026 Form 4 transactions.