Main Street insider acquires 118 shares via dividend plan

Main Street Capital’s president and CIO reported acquiring additional common shares via a dividend reinvestment plan.

Rhea-AI Filing Summary

Main Street Capital CORP (MAIN) officer David L. Magdol reported acquiring a total of 118.3017 shares of common stock on August 14, 2026. The filing states these shares were obtained through a dividend reinvestment plan in transactions exempt from Section 16 under Rule 16a-11, and no Rule 10b5-1 plan is reported.

Insider Trade Summary

Other: 118.3017 shares

Other 2 txns

Insider Magdol David L.

Role PRESIDENT, CIO AND SMD

Type	Security	Shares	Price	Value
Other	Common Stock F1	60.6977	$59.00	$4K
Other	Common Stock F1	57.604	$59.23	$3K

Holdings After Transaction: Common Stock — 441,141.6289 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares acquired (lot 1): 60.6977 shares Shares acquired (lot 2): 57.6040 shares Total shares acquired via DRIP: 118.3017 shares +2 more

5 metrics

Shares acquired (lot 1) 60.6977 shares Common stock credited under dividend reinvestment plan on August 14, 2026 at $59.00 per share

Shares acquired (lot 2) 57.6040 shares Common stock credited under dividend reinvestment plan on August 14, 2026 at $59.23 per share

Total shares acquired via DRIP 118.3017 shares Sum of dividend reinvestment transactions reported for August 14, 2026

Price per share (lot 1) $59.00 Per-share price for 60.6977 reinvested shares on August 14, 2026

Price per share (lot 2) $59.23 Per-share price for 57.6040 reinvested shares on August 14, 2026

Key Terms

dividend reinvestment plan, Section 16, Rule 16a-11

3 terms

dividend reinvestment plan financial

"The reporting person acquired these shares under a dividend reinvestment plan"

A dividend reinvestment plan lets shareholders automatically use cash dividends to buy more shares of the same company instead of receiving the money. It matters to investors because it turns regular payouts into a steady way to grow ownership and take advantage of compound returns—like having your savings automatically buy additional slices of a pie over time—while often reducing transaction costs and smoothing purchase timing.

Section 16 regulatory

"dividend reinvestment transaction exempt from Section 16 under Rule 16a-11"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

Rule 16a-11 regulatory

"dividend reinvestment transaction exempt from Section 16 under Rule 16a-11"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did MAIN report for David L. Magdol on August 14, 2026?

David L. Magdol reported acquiring 118.3017 shares of Main Street Capital CORP common stock on August 14, 2026 through a dividend reinvestment plan in Section 16-exempt transactions under Rule 16a-11.

At what prices were the MAIN shares credited under the dividend reinvestment plan?

The dividend reinvestment plan credited 60.6977 shares at $59.00 per share and 57.6040 shares at $59.23 per share, all on August 14, 2026, to David L. Magdol’s account.

How many MAIN shares did David L. Magdol acquire in total through the August 14, 2026 DRIP?

In total, David L. Magdol acquired 118.3017 shares of Main Street Capital CORP common stock through the dividend reinvestment plan on August 14, 2026, across two credited transactions.

Were the August 14, 2026 MAIN transactions made under a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 checkbox is not marked, and the only footnote explains that the shares were acquired under a dividend reinvestment plan exempt from Section 16 under Rule 16a-11.

What exemption from Section 16 applies to these MAIN dividend reinvestment transactions?

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

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/15/2026 - 04:30 PM EDT Accepted by SEC EDGAR 09/15/2026 - 04:30 PM EDT Learn about SEC filing dates

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)
08/14/2026

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	08/14/2026		J(1)	V	60.6977	A	$59	441,084.0249	D
Common Stock	08/14/2026		J(1)	V	57.604	A	$59.23	441,141.6289	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	09/15/2026
	** 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)