Form 4: FOSTER VINCENT D reports multiple insider transactions in MAIN

Rhea-AI Filing Summary

FOSTER VINCENT D reported multiple insider transaction types in a Form 4 filing for MAIN. The filing lists transactions totaling 1,242 shares at a weighted average price of $62.27 per share. Following the reported transactions, holdings were 1,734,717 shares.

Insider Trade Summary

6 transactions reported

Mixed 6 txns

Insider FOSTER VINCENT D

Role Director

Type	Security	Shares	Price	Value
Other	Common Stock	11.528	$62.27	$717.85
Other	Common Stock	1,230.67	$62.27	$77K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,734,716.929 shares (Direct); Common Stock — 35,307.474 shares (Indirect, MS Trust I)

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. Family trust

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^*

FOSTER VINCENT D

(Last) (First) (Middle)

1300 POST OAK BLVD

8TH FLOOR

(Street)

HOUSTON TX 77056

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
01/15/2026

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

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

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

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	01/15/2026		J(1)	V	11.528	A	$62.27	1,734,716.9294	D
Common Stock	01/15/2026		J(1)	V	1,230.67	A	$62.27	1,735,947.5994	D
Common Stock								35,307.4742	I	MS Trust I(2)
Common Stock								34,557	I	MS Trust II(2)
Common Stock								34,557	I	MS Trust III(2)
Common Stock								33,300	I	MS Trust V(2)

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. Family trust

	/s/ Jason B. Beauvais, Attorney-in-Fact	02/13/2026
	** 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.

FAQ

What insider transaction did MAIN director Vincent D. Foster report?

Director Vincent D. Foster reported acquiring additional Main Street Capital common shares through a dividend reinvestment plan on January 15, 2026. The transactions were coded "J" and executed at $62.27 per share, increasing his reported direct beneficial ownership stake.

How many MAIN shares does Vincent D. Foster own directly after this filing?

After the reported dividend reinvestment transactions, Vincent D. Foster beneficially owns 1,735,947.5994 Main Street Capital common shares directly. This figure reflects his holdings following the January 15, 2026 transactions at $62.27 per share disclosed in the Form 4 filing.

Were Vincent D. Foster’s MAIN share acquisitions open-market purchases?

No, the filing states that Vincent D. Foster acquired the shares under a dividend reinvestment plan. The explanation specifies these were dividend reinvestment transactions exempt from Section 16 under Rule 16a-11, rather than open-market purchases on a stock exchange.

Does Vincent D. Foster have indirect ownership of MAIN shares through trusts?

Yes, the Form 4 reports indirect ownership in Main Street Capital shares through family trusts labeled MS Trust I, MS Trust II, MS Trust III, and MS Trust V. Each trust holds a separate block of common shares attributed as indirect beneficial ownership.

What is transaction code J in Vincent D. Foster’s MAIN Form 4?

The Form 4 labels the transactions with code "J" and describes them in the footnotes as acquisitions under a dividend reinvestment plan. This indicates the reported activity relates to dividend reinvestment, rather than standard open-market buying or selling of Main Street Capital stock.

At what price were the reported MAIN shares acquired in the dividend reinvestment?

The dividend reinvestment transactions for Main Street Capital shares were recorded at $62.27 per share. This price applies to the January 15, 2026 acquisitions reported by director Vincent D. Foster under the company’s dividend reinvestment plan described in the Form 4.