Main Street Capital (NYSE: MAIN) officer plans multimillion-dollar Rule 144 stock sale

Rhea-AI Filing Summary

Main Street Capital Corp (MAIN) received a Rule 144 notice that officer Jesse E. Morris intends to sell up to 35,000 shares of common stock. The shares are proposed to be sold through Raymond James & Associates, Inc. on the NYSE, with an indicated aggregate market value of about $2,040,150.

The securities to be sold were acquired via restricted stock vesting on 04/01/2025, identified as compensation from the issuer. The notice sets a Rule 144 sale period running through 08/21/2026, and is signed by Jason B. Beauvais as Attorney-in-Fact for the seller.

Key Figures

Shares proposed to be sold: 35,000 shares of common stock Aggregate market value of shares: $2,040,150 Acquisition date of shares: 04/01/2025 +1 more

4 metrics

Shares proposed to be sold 35,000 shares of common stock Maximum number of MAIN shares covered by the Rule 144 notice

Aggregate market value of shares $2,040,150 Estimated value of 35,000 MAIN shares covered by the notice

Acquisition date of shares 04/01/2025 Shares acquired via restricted stock vesting as compensation

Rule 144 sale period end date 08/21/2026 End of period for proposed sales under this Form 144

Key Terms

Rule 144, restricted stock vesting, Attorney-in-Fact

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock vesting financial

"Acquired via restricted stock vesting on 4/1/2025"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Attorney-in-Fact regulatory

"Signature | /s/ Jason B. Beauvais, Attorney-in-Fact"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does this Form 144 filing mean for MAIN shareholders?

An officer of Main Street Capital Corp, Jesse E. Morris, has filed a Rule 144 notice to sell up to 35,000 shares of MAIN common stock. This is a disclosure of a potential insider sale, not an issuance of new shares by the company.

How many MAIN shares are covered by Jesse E. Morris’s planned sale?

The notice covers up to 35,000 shares of Main Street Capital Corp common stock. These shares were acquired via restricted stock vesting on 04/01/2025 as compensation from the issuer.

What is the approximate value of the MAIN shares in this Form 144?

The filing lists an aggregate market value of about $2,040,150 for the 35,000 shares of MAIN common stock proposed to be sold under Rule 144.

Over what period may the MAIN shares be sold under this Rule 144 notice?

The Rule 144 notice specifies a sale period running through 08/21/2026 for the proposed sale of up to 35,000 MAIN common shares, subject to Rule 144 conditions.

Through which broker are the MAIN shares expected to be sold?

The Form 144 lists Raymond James & Associates, Inc., located in St. Petersburg, Florida, as the broker for the potential sale of 35,000 Main Street Capital Corp common shares on the NYSE.

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

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Available on EDGAR 08/21/2026 - 05:06 PM Accepted by SEC EDGAR 08/21/2026 - 05:05 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001596070
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MAIN STREET CAPITAL CORP
SEC File Number	814-00746
Address of Issuer	1300 POST OAK BOULEVARD 8TH FLOOR HOUSTON TEXAS 77056
Phone	713-350-6000
Name of Person for Whose Account the Securities are To Be Sold	Jesse E. Morris
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Raymond James & Associates, Inc. 880 Carillon Parkway St. Petersburg FL 33716	35000	2040150	93508461	08/21/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	04/01/2025	Acquired via restricted stock vesting on 4/1/2025	Issuer			35000	04/01/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/21/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jason B. Beauvais, Attorney-in-Fact
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)