Form 4: JACKSON JOHN EARL reports multiple insider transactions in MAIN

Rhea-AI Filing Summary

JACKSON JOHN EARL reported multiple insider transaction types in a Form 4 filing for MAIN. The filing lists transactions totaling 273 shares at a weighted average price of $63.62 per share. Following the reported transactions, holdings were 80,710 shares.

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

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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^*

JACKSON JOHN EARL

(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	75.952	A	$62.27	80,709.5289	D
Common Stock	01/15/2026		J(1)	V	188.609	A	$64.2	80,898.1379	D
Common Stock	01/15/2026		J(1)	V	8	A	$62.895	1,990	I	By Wife

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	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 did MAIN director John Earl Jackson report on this Form 4?

Director John Earl Jackson reported three transactions in Main Street Capital (MAIN) common stock on January 15, 2026. All were part of a dividend reinvestment plan, increasing both his directly held and indirectly held share positions.

How many MAIN shares did John Earl Jackson acquire directly through dividend reinvestment?

The Form 4 shows Jackson acquired 75.952 Main Street Capital shares at $62.27 and 188.609 shares at $64.20, both recorded as direct ownership. These transactions were executed under a dividend reinvestment plan.

What indirect MAIN share ownership did John Earl Jackson report?

Jackson reported an additional 8 Main Street Capital shares at $62.895 held indirectly "By Wife." This reflects beneficial ownership through his spouse, as disclosed in the Form 4’s non-derivative securities table.

What is the significance of the dividend reinvestment plan in this MAIN Form 4?

The filing states Jackson acquired these shares under a dividend reinvestment plan. This means cash dividends were automatically used to buy additional Main Street Capital shares, in a transaction exempt from Section 16 under Rule 16a-11.

Does this MAIN Form 4 involve derivative securities for John Earl Jackson?

No derivative positions are reported for Jackson in this Form 4. The derivative securities table is present but contains no entries, indicating only common stock transactions via the dividend reinvestment plan were disclosed for this date.

What is John Earl Jackson’s role at Main Street Capital (MAIN)?

The Form 4 identifies John Earl Jackson as a director of Main Street Capital Corp. He is not listed as an officer or 10% owner in this filing, and the form is filed for one reporting person only.