Main Street Capital director adds shares via DRIP

Main Street Capital Corp director John Earl Jackson reported acquiring a total of 1,112.757 shares of common stock through a series of dividend reinvestment transactions exempt under Rule 16a-11.

Rhea-AI Filing Summary

Main Street Capital Corp director John Earl Jackson reported acquiring a total of 1,112.757 shares of common stock through a series of dividend reinvestment transactions exempt under Rule 16a-11. These acquisitions occurred on June 15, June 29, and July 15, 2026, with most shares held directly and small amounts held indirectly through his wife.

Insider Trade Summary

Other: 1,112.757 shares

Other 8 txns

Insider JACKSON JOHN EARL

Role Director

Type	Security	Shares	Price	Value
Other	Common Stock F1	97.312	$53.09	$5K
Other	Common Stock F1	247.144	$53.41	$13K
Other	Common Stock F1	10	$53.47	$534.70
Other	Common Stock F1	113.987	$51.01	$6K
Other	Common Stock F1	288.148	$51.56	$15K
Other	Common Stock F1	96.389	$52.02	$5K
Other	Common Stock F1	249.777	$51.29	$13K
Other	Common Stock F1	10	$52.18	$521.80

Holdings After Transaction: Common Stock — 85,495.3089 shares (Direct); Common Stock — 2,046 shares (Indirect, By Wife)

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

Total shares acquired via DRIP: 1,112.757 shares Largest single DRIP lot: 288.1480 shares at $51.5600 Indirect DRIP holdings by wife: 10.0000 shares at $52.1800; 10.0000 shares at $53.4700 +1 more

4 metrics

Total shares acquired via DRIP 1,112.757 shares Aggregate restructuringShares across J-code dividend reinvestment transactions

Largest single DRIP lot 288.1480 shares at $51.5600 Common stock acquired on 2026-06-29 in a J-code transaction

Indirect DRIP holdings by wife 10.0000 shares at $52.1800; 10.0000 shares at $53.4700 Common stock reported as indirectly owned "By Wife" on 2026-06-15 and 2026-07-15

Sample DRIP transaction 247.1440 shares at $53.4100 Common stock acquired directly on 2026-07-15 under dividend reinvestment

Key Terms

dividend reinvestment plan, Rule 16a-11, indirect ownership, Section 16

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.

Rule 16a-11 regulatory

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

indirect ownership financial

"Common Stock transaction listed as indirect ownership "By Wife""

Section 16 regulatory

"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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider activity did MAIN director John Earl Jackson report?

John Earl Jackson reported acquiring 1,112.757 shares of Main Street Capital common stock. These shares were obtained through dividend reinvestment transactions on several dates in June and July 2026 under a dividend reinvestment plan.

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

He acquired a total of 1,112.757 shares of Main Street Capital common stock. The transactions reflect automatic dividend reinvestment rather than open-market purchases, as disclosed under Rule 16a-11.

On what dates did John Earl Jackson’s MAIN dividend reinvestment transactions occur?

The dividend reinvestment acquisitions occurred on June 15, 2026, June 29, 2026, and July 15, 2026. Each date includes multiple line items reflecting separate reinvestments at different per-share prices.

Were any of John Earl Jackson’s MAIN shares held indirectly?

Yes. Two transactions of 10.0000 shares each are reported as held indirectly "By Wife". These indirect holdings are separate from Jackson’s directly held Main Street Capital shares.

What were the reported per-share prices for John Earl Jackson’s MAIN dividend reinvestments?

Reported per-share prices for the dividend reinvestment transactions include $51.01, $51.29, $51.56, $52.02, $52.18, $53.09, $53.41, and $53.47. Each transaction line ties a specific price to a specific share amount.

Were John Earl Jackson’s MAIN dividend reinvestment transactions exempt from Section 16?

Yes. The filing states the shares were acquired under a dividend reinvestment plan, in transactions described as exempt from Section 16 under Rule 16a-11, which governs certain dividend or interest reinvestment programs.

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

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Accepted by SEC EDGAR 08/14/2026 - 04:30 PM EDT 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^*

JACKSON JOHN EARL

(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)
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	96.389	A	$52.02	84,498.9409	D
Common Stock	06/15/2026		J(1)	V	249.777	A	$51.29	84,748.7179	D
Common Stock	06/29/2026		J(1)	V	113.987	A	$51.01	84,862.7049	D
Common Stock	06/29/2026		J(1)	V	288.148	A	$51.56	85,150.8529	D
Common Stock	07/15/2026		J(1)	V	97.312	A	$53.09	85,248.1649	D
Common Stock	07/15/2026		J(1)	V	247.144	A	$53.41	85,495.3089	D
Common Stock	06/15/2026		J(1)	V	10	A	$52.18	2,036	I	By Wife
Common Stock	07/15/2026		J(1)	V	10	A	$53.47	2,046	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	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)