Main Street Capital (NYSE: MAIN) EVP reports stock grant and tax withholding

Rhea-AI Filing Summary

Main Street Capital executive Jason B. Beauvais, EVP, General Counsel and Secretary, reported several routine share transactions in the company’s common stock. On April 1, 2026, he received 33,550 shares as a stock grant under the 2022 Equity and Incentive Plan at no cash cost to him.

On the same date, 13,004 shares were withheld at $52.96 per share to cover tax liabilities upon vesting of restricted shares, a non–open-market, tax-withholding disposition. Earlier, on March 13 and March 27, 2026, he recorded small dividend reinvestment transactions of about 100.8 and 120.7 shares under a dividend reinvestment plan.

After these transactions, Beauvais directly owns about 202,806 shares of Main Street Capital common stock. The filing reflects compensation and administrative share movements rather than open-market buying or selling.

Insights

Equity compensation analyst

Routine equity grant and tax withholding, no open‑market trading.

Jason B. Beauvais received 33,550 Main Street Capital shares as equity compensation under the 2022 Equity and Incentive Plan. This aligns with standard executive pay practices, with no cash outlay by the executive at grant.

To satisfy tax obligations on vesting restricted shares, the company withheld 13,004 shares at $52.96 each. Footnotes specify this was approved under Rule 16b-3, so it is a mechanistic tax event, not an open-market sale. Two small dividend reinvestment entries modestly increased holdings.

Following all transactions, Beauvais directly holds about 202,806 shares. With no open-market buys or sells and no derivative exercises reported, the activity appears routine and compensation-driven, offering limited insight into his view of Main Street Capital’s valuation.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Beauvais Jason B

Role EVP, GC, SECRETARY

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	33,550	$0.00	--
Tax Withholding	Common Stock	13,004	$52.96	$689K
Other	Common Stock	120.698	$52.92	$6K
Other	Common Stock	100.795	$54.66	$6K

Holdings After Transaction: Common Stock — 215,809.854 shares (Direct)

Footnotes (1)

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. Shares issued under the Main Street Capital Corporation 2022 Equity and Incentive Plan. Shares withheld for payment of tax liability upon vesting of restricted shares granted under the Main Street Capital Corporation 2022 Equity and Incentive Plan. This withholding transaction was approved by the Compensation Committee of Main Street's Board of Directors in accordance with Rule 16b-3(d)(1) of the Securities Exchange Act of 1934 (the "Act"), and as such, the sale is exempt from section 16(b) of the Act pursuant to Rule 16b-3(e) promulgated thereunder.

Key Figures

Equity grant: 33,550 shares Tax withholding shares: 13,004 shares at $52.96 Dividend reinvestment 1: 100.795 shares at $54.66 +2 more

5 metrics

Equity grant 33,550 shares Common stock granted on April 1, 2026 under 2022 Equity and Incentive Plan

Tax withholding shares 13,004 shares at $52.96 Shares withheld on April 1, 2026 to cover tax liability on vesting

Dividend reinvestment 1 100.795 shares at $54.66 Dividend reinvestment transaction on March 13, 2026

Dividend reinvestment 2 120.698 shares at $52.92 Dividend reinvestment transaction on March 27, 2026

Post-transaction holdings 202,805.8539 shares Directly owned Main Street Capital common stock after latest transaction

Key Terms

dividend reinvestment plan, restricted shares, Rule 16a-11, Rule 16b-3, +1 more

5 terms

dividend reinvestment plan financial

"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."

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.

restricted shares financial

"Shares withheld for payment of tax liability upon vesting of restricted shares granted under the Main Street Capital Corporation 2022 Equity and Incentive Plan."

Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

Rule 16a-11 regulatory

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

Rule 16b-3 regulatory

"approved by the Compensation Committee of Main Street's Board of Directors in accordance with Rule 16b-3(d)(1) of the Securities Exchange Act of 1934"

Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.

Equity and Incentive Plan financial

"Shares issued under the Main Street Capital Corporation 2022 Equity and Incentive Plan."

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^*

Beauvais Jason B

(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)
	EVP, GC, SECRETARY

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

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	100.795	A	$54.66	182,139.1559	D
Common Stock	03/27/2026		J(1)	V	120.698	A	$52.92	182,259.8539	D
Common Stock	04/01/2026		A(2)		33,550	A	$0	215,809.8539	D
Common Stock	04/01/2026		F(3)		13,004	D	$52.96	202,805.8539	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.

2. Shares issued under the Main Street Capital Corporation 2022 Equity and Incentive Plan.

3. Shares withheld for payment of tax liability upon vesting of restricted shares granted under the Main Street Capital Corporation 2022 Equity and Incentive Plan. This withholding transaction was approved by the Compensation Committee of Main Street's Board of Directors in accordance with Rule 16b-3(d)(1) of the Securities Exchange Act of 1934 (the "Act"), and as such, the sale is exempt from section 16(b) of the Act pursuant to Rule 16b-3(e) promulgated thereunder.

	/s/ Jason B. Beauvais	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) executive Jason Beauvais report in this Form 4?

He reported a grant of 33,550 Main Street Capital common shares, tax withholding of 13,004 shares on vesting restricted stock, and two small dividend reinvestment transactions. These are routine compensation and administrative events, not open-market stock purchases or sales.

How many Main Street Capital (MAIN) shares did Jason Beauvais receive as compensation?

He received 33,550 shares of Main Street Capital common stock as a grant under the 2022 Equity and Incentive Plan. The grant carried a reported price of $0.00 per share, reflecting stock-based compensation rather than a market purchase.

Why were 13,004 Main Street Capital (MAIN) shares disposed of in this filing?

The 13,004 shares were withheld at $52.96 per share to cover tax liabilities when restricted shares vested. This tax-withholding disposition was approved by the board’s Compensation Committee and is exempt under Rule 16b-3, so it is not an open-market sale.

What are the small J-code transactions in the Main Street Capital (MAIN) Form 4?

The J-code transactions represent dividend reinvestment activity. Beauvais acquired about 100.8 and 120.7 Main Street Capital shares through a dividend reinvestment plan, which automatically uses cash dividends to buy additional shares under an exempt Section 16 transaction.

How many Main Street Capital (MAIN) shares does Jason Beauvais own after these transactions?

After the reported grant, tax withholding, and dividend reinvestment entries, Jason Beauvais directly owns approximately 202,805.8539 shares of Main Street Capital common stock, as disclosed in the post-transaction holdings column of the Form 4.

Does this Main Street Capital (MAIN) Form 4 show any open-market insider buying or selling?

No. The filing shows an equity grant, tax-withholding disposition, and dividend reinvestment transactions. All are administrative or compensation-related and are exempt under specific SEC rules, so they do not represent discretionary open-market buys or sells.