Main Street Capital (MAIN) insider adds shares via dividend reinvestment

Rhea-AI Filing Summary

Main Street Capital CORP officer David L. Magdol reported multiple acquisitions of common stock through a dividend reinvestment plan. On June 15, 2026 and June 29, 2026, and July 15, 2026, he acquired an aggregate of 335.3232 shares via dividend reinvestment transactions, at per-share prices ranging from $51.01 to $53.50. These transactions are described as exempt from Section 16 under Rule 16a-11.

Insider Trade Summary

Net Buyer: 335.3232 shares

Net Buy 5 txns

Insider Magdol David L.

Role PRESIDENT, CIO AND SMD

Type	Security	Shares	Price	Value
Other	Common Stock F1	66.6139	$53.50	$4K
Other	Common Stock F1	63.947	$53.09	$3K
Other	Common Stock F1	74.904	$51.01	$4K
Other	Common Stock F1	66.5183	$52.30	$3K
Other	Common Stock F1	63.34	$52.02	$3K

Holdings After Transaction: Common Stock — 441,023.3272 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 July 15, 2026 (lot 1): 66.6139 shares at $53.5000 per share Shares acquired July 15, 2026 (lot 2): 63.9470 shares at $53.0900 per share Shares acquired June 29, 2026: 74.9040 shares at $51.0100 per share +3 more

6 metrics

Shares acquired July 15, 2026 (lot 1) 66.6139 shares at $53.5000 per share Common Stock acquired via dividend reinvestment transaction

Shares acquired July 15, 2026 (lot 2) 63.9470 shares at $53.0900 per share Common Stock acquired via dividend reinvestment transaction

Shares acquired June 29, 2026 74.9040 shares at $51.0100 per share Common Stock acquired via dividend reinvestment transaction

Shares acquired June 15, 2026 (lot 1) 66.5183 shares at $52.3000 per share Common Stock acquired via dividend reinvestment transaction

Shares acquired June 15, 2026 (lot 2) 63.3400 shares at $52.0200 per share Common Stock acquired via dividend reinvestment transaction

Total restructuring shares 335.3232 shares Aggregate shares from restructuring-type (J code) acquisitions

Key Terms

dividend reinvestment plan, Section 16, Rule 16a-11, Other acquisition or disposition

4 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

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

Other acquisition or disposition financial

"transaction code "J" described as Other acquisition or disposition"

FAQ

What insider activity did MAIN report for David L. Magdol on this Form 4?

David L. Magdol reported acquiring 335.3232 shares of Main Street Capital common stock through a dividend reinvestment plan on June 15, June 29, and July 15, 2026, in transactions exempt under Rule 16a-11.

On what dates did MAIN’s David L. Magdol acquire shares under the dividend reinvestment plan?

The acquisitions occurred on June 15, 2026, June 29, 2026, and July 15, 2026. Each transaction involved common stock credited through a dividend reinvestment plan at specified per-share prices.

How many MAIN shares did David L. Magdol acquire in each reported Form 4 transaction?

He acquired 66.6139 and 63.9470 shares on July 15, 2026; 74.9040 shares on June 29, 2026; and 66.5183 and 63.3400 shares on June 15, 2026, all through the dividend reinvestment plan.

What prices were paid per share for MAIN stock in Magdol’s dividend reinvestment transactions?

Per-share prices ranged from $51.01 to $53.50. Individual transactions were reported at $51.01, $52.02, $52.30, $53.09, and $53.50 for the common stock credited under the plan.

Were David L. Magdol’s MAIN transactions part of a dividend reinvestment plan and exempt under Rule 16a-11?

Yes. The footnote states he acquired these shares under a dividend reinvestment plan, in dividend reinvestment transactions exempt from Section 16 under Rule 16a-11, clarifying their regulatory treatment.

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/14/2026 - 04:34 PM Accepted by SEC EDGAR 08/14/2026 - 04:30 PM 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)
06/15/2026

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	06/15/2026		J(1)	V	66.5183	A	$52.3	440,754.5223	D
Common Stock	06/15/2026		J(1)	V	63.34	A	$52.02	440,817.8623	D
Common Stock	06/29/2026		J(1)	V	74.904	A	$51.01	440,892.7663	D
Common Stock	07/15/2026		J(1)	V	66.6139	A	$53.5	440,959.3802	D
Common Stock	07/15/2026		J(1)	V	63.947	A	$53.09	441,023.3272	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	08/14/2026
	** 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)