Dividend reinvestment boosts Main Street Capital (NYSE: MAIN) director stake

Rhea-AI Filing Summary

Main Street Capital director Brian E. Lane increased his holdings through dividend reinvestment transactions. On March 13 and March 27, 2026, he received a total of 515.023 shares of common stock at prices between $51.53 and $54.89 per share under a dividend reinvestment plan.

These transactions are coded as "other" and were carried out pursuant to a dividend reinvestment plan exempt from Section 16 under Rule 16a-11, rather than as open-market purchases or sales. Following the latest transaction, Lane directly holds about 49,889.7688 shares of Main Street Capital common stock.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Lane Brian E.

Role Director

Type	Security	Shares	Price	Value
Other	Common Stock	75.932	$52.92	$4K
Other	Common Stock	207.583	$51.53	$11K
Other	Common Stock	63.411	$54.66	$3K
Other	Common Stock	168.097	$54.89	$9K

Holdings After Transaction: Common Stock — 49,682.186 shares (Direct)

Footnotes (1)

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Key Figures

Total shares from restructuring transactions: 515.023 shares Post-transaction direct holdings (latest): 49,889.7688 shares March 27, 2026 DRIP tranche 1: 75.9320 shares at $52.9200 +3 more

6 metrics

Total shares from restructuring transactions 515.023 shares Dividend reinvestment plan transactions classified as restructuringShares

Post-transaction direct holdings (latest) 49,889.7688 shares Direct common stock held after March 27, 2026 transaction

March 27, 2026 DRIP tranche 1 75.9320 shares at $52.9200 Common stock received under dividend reinvestment plan

March 27, 2026 DRIP tranche 2 207.5830 shares at $51.5300 Common stock received under dividend reinvestment plan

March 13, 2026 DRIP tranche 1 63.4110 shares at $54.6600 Common stock received under dividend reinvestment plan

March 13, 2026 DRIP tranche 2 168.0970 shares at $54.8900 Common stock received under dividend reinvestment plan

Key Terms

dividend reinvestment plan, Section 16, Rule 16a-11, Form 4

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

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

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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^*

Lane Brian E.

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

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	03/13/2026		J(1)	V	63.411	A	$54.66	49,438.1568	D
Common Stock	03/13/2026		J(1)	V	168.097	A	$54.89	49,606.2538	D
Common Stock	03/27/2026		J(1)	V	75.932	A	$52.92	49,682.1858	D
Common Stock	03/27/2026		J(1)	V	207.583	A	$51.53	49,889.7688	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	04/03/2026
	** 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 did Main Street Capital (MAIN) director Brian E. Lane report in this Form 4?

Brian E. Lane reported receiving additional Main Street Capital common shares through a dividend reinvestment plan. The Form 4 shows multiple “other” transactions that increased his direct holdings without open-market buying or selling activity.

How many Main Street Capital (MAIN) shares did Brian E. Lane receive?

Brian E. Lane received a total of 515.023 Main Street Capital common shares. These shares came from several dividend reinvestment transactions, each adding small fractional amounts, rather than from a single large trade in the open market.

At what prices were the dividend reinvestment shares for MAIN recorded?

The dividend reinvestment transactions for Main Street Capital were recorded at prices between $51.53 and $54.89 per share. Each transaction reflects the market-based price used by the plan when reinvesting cash dividends into additional common shares.

What is Brian E. Lane’s Main Street Capital (MAIN) ownership after these transactions?

After the reported dividend reinvestment transactions, Brian E. Lane directly holds about 49,889.7688 shares of Main Street Capital common stock. This figure reflects his updated direct ownership position as shown in the Form 4’s post-transaction balance fields.

Were these MAIN transactions open‑market buys or sells by the director?

No, these transactions were not open‑market buys or sells. The Form 4 identifies them as “other” transactions and the footnote explains the shares were acquired automatically under a dividend reinvestment plan exempt from Section 16 under Rule 16a‑11.

What does Rule 16a-11 mean for these Main Street Capital (MAIN) transactions?

Rule 16a-11 exempts certain dividend reinvestment transactions from standard Section 16 reporting treatment. In this case, it clarifies that Lane’s additional Main Street Capital shares were acquired automatically via a dividend reinvestment plan rather than through discretionary market trading.