# EDGAR Filing Document

**Accession Number:** 0001396440
**File Stem:** 0001396440-26-000046
**Filing Date:** 2026-3
**Character Count:** 21240
**Document Hash:** 2ba4877e584193738ff88a16364a18d4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001396440-26-000046.hdr.sgml**: 20260331

**ACCESSION NUMBER**: 0001396440-26-000046

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 15

**CONFORMED PERIOD OF REPORT**: 20260327

**ITEM INFORMATION**: Entry into a Material Definitive Agreement

**ITEM INFORMATION**: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260331

**DATE AS OF CHANGE**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Main Street Capital CORP
- **CENTRAL INDEX KEY:** 0001396440

**ORGANIZATION NAME:**
- **EIN:** 412230745
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 814-00746
- **FILM NUMBER:** 26823418

**BUSINESS ADDRESS:**
- **STREET 1:** 1300 POST OAK BOULEVARD
- **STREET 2:** 8TH FLOOR
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77056
- **BUSINESS PHONE:** (713) 350-6000

**MAIL ADDRESS:**
- **STREET 1:** 1300 POST OAK BOULEVARD
- **STREET 2:** 8TH FLOOR
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77056

?xml version='1.0' encoding='ASCII'? main-20260327

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

__________________________________________________________________________

**FORM 8-K**

__________________________________________________________________________

**CURRENT REPORT**

**Pursuant to Section 13 OR 15(d) of**

**the Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported) March 27, 2026

__________________________________________________________________________

**Main Street Capital Corporation**

(Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Maryland** | **814-00746** | **41-2230745** |
| (State or other jurisdiction<br>of incorporation) | (Commission File Number) | (IRS Employer Identification No.) |

---

---

| | |
|:---|:---|
| **1300 Post Oak Boulevard, 8th Floor, Houston, Texas** | **77056** |
| (Address of principal executive offices) | (Zip Code) |

---

Registrant's telephone number, including area code: (**713) 350-6000**

Not Applicable

___________________________________________________________________________________

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

□ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

□ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

□ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

□ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **<u>Title of each class</u>** | **<u>Trading Symbol</u>** | **<u>Name of each exchange on which registered</u>** |
| Common Stock, par value $0.01 per share | MAIN | New York Stock Exchange |
|  |  | NYSE Texas |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company □

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. □

------

**Item 1.01**&nbsp;&nbsp;&nbsp;&nbsp;**Entry into a Material Definitive Agreement.**

On March 27, 2026, Main Street Capital Corporation ("Main Street") entered into an underwriting agreement (the "Underwriting Agreement") by and between Main Street and RBC Capital Markets, LLC, as representative of the underwriters named on Schedule A thereto, in connection with the issuance and sale of an additional $200,000,000 in aggregate principal amount (the "Offering") of Main Street's 6.95% notes due 2029 (the "New Notes"). The New Notes were issued as additional notes under the Sixth Supplemental Indenture, dated January 12, 2024, between Main Street and The Bank of New York Mellon Trust Company, N.A., as trustee (the "Trustee"), to the indenture, dated April 2, 2013, between Main Street and the Trustee (the "Base Indenture" and, together with the Sixth Supplemental Indenture, the "Indenture"), pursuant to which, on January 12, 2024, Main Street issued $350,000,000 in aggregate principal amount of its 6.95% notes due 2029 (the "Existing 2029 Notes" and, together with the New Notes, the "Notes"). The New Notes are treated as a single series with the Existing 2029 Notes under the Indenture and have the same terms as the Existing 2029 Notes, other than the issue date and offering price.

The New Notes will mature on March 1, 2029 unless previously redeemed or repurchased in accordance with their terms. The New Notes bear cash interest from March 1, 2026, at an annual rate of 6.95% payable semiannually on March 1 and September 1 of each year, beginning on September 1, 2026. The New Notes have the same CUSIP number and are fungible and rank equally with the Existing 2029 Notes. Including the New Notes, the outstanding aggregate principal amount of Main Street's 6.95% notes due 2029 is $550,000,000. The New Notes are direct unsecured obligations of Main Street and rank equally in right of payment with Main Street's existing and future unsecured indebtedness but effectively subordinated to all of Main Street's outstanding and future secured indebtedness, to the extent of the value of the assets securing such indebtedness, and structurally subordinated to the debt and other obligations of any of Main Street's subsidiaries, financing vehicles or similar facilities.

Prior to February 1, 2029 (one month prior to the maturity date of the Notes) (the "Par Call Date"), Main Street may redeem the Notes at its option, in whole or in part, at any time or from time to time, at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of: (1) (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the Notes matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate, as defined in the Indenture, plus 45 basis points less (b) interest accrued to the date of redemption, and (2) 100% of the principal amount of the Notes to be redeemed, plus, in either case, accrued and unpaid interest thereon to the redemption date. On or after the Par Call Date, Main Street may redeem the Notes, in whole or in part, at any time and from time to time, at a redemption price equal to 100% of the principal amount of the Notes being redeemed plus accrued and unpaid interest thereon to the redemption date. In addition, on the occurrence of a "change of control repurchase event," as defined in the Indenture, holders of the Notes will have the right, at their option, to require Main Street to repurchase for cash some or all of the Notes at a repurchase price equal to 100% of the principal amount of the Notes being repurchased, plus accrued and unpaid interest to, but not including, the repurchase date.

The Indenture contains certain covenants, including covenants requiring Main Street to comply with the asset coverage requirements of Section 18(a)(1)(A), as modified by Section 61(a) of the Investment Company Act of 1940, as amended, whether or not it is subject to those requirements (but giving effect to exemptive relief granted to Main Street by the Securities and Exchange Commission (the "SEC")), and to provide financial information to the holders of the Notes and the Trustee if Main Street is no longer subject to the reporting requirements under the Securities Exchange Act of 1934, as amended. These covenants are subject to important limitations and exceptions that are described in the Indenture.

The New Notes were issued and sold in a public offering that was made pursuant to Main Street's effective shelf registration statement on Form N-2 (Registration No. 333-285405) previously filed with the SEC, as supplemented by a preliminary prospectus supplement dated March 27, 2026 and a final prospectus supplement dated March 27, 2026. The Offering closed and the New Notes were delivered and paid for on March 31, 2026. The net proceeds received by Main Street were approximately $202.8 million, after deducting the underwriting discounts and estimated offering expenses payable by Main Street.

Main Street intends to initially use the net proceeds from the Offering to repay outstanding indebtedness, including amounts outstanding under its credit facilities.

The foregoing description of the Underwriting Agreement, the New Notes and the Indenture does not purport to be complete and is qualified in its entirety by reference to (i) the full text of the Underwriting Agreement filed with this Current Report on Form 8-K as Exhibit 1.1, which is incorporated herein by reference, (ii) the full text of the <u>[Sixth Supplemental Indenture and the accompanying Form of 6.95% Notes due 2029, which are filed as Exhibits 4.1 and 4.2 to](https://www.sec.gov/ix?doc=/Archives/edgar/data/0001396440/000139644024000036/main-20240110.htm)</u>

------

<u>[Main Street's Current Report on Form 8-K filed on January 12, 2024 (File No. 814-00746)](https://www.sec.gov/ix?doc=/Archives/edgar/data/0001396440/000139644024000036/main-20240110.htm)</u> and incorporated herein by reference, and (iii) the full text of the <u>[Base Indenture, a form of which is filed as Exhibit (d)(6) to Main Street's Post-Effective Amendment No. 2 to its Registration Statement on Form N-2 filed on March 28, 2013 (Reg. No. 333-183555)](https://www.sec.gov/Archives/edgar/data/1396440/000110465913025446/a13-8927_2ex99dd6.htm)</u>, which is incorporated herein by reference.

This Current Report on Form 8-K shall not constitute an offer to sell or a solicitation of an offer to buy any securities, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or other jurisdiction.

**Item 2.03&nbsp;&nbsp;&nbsp;&nbsp;Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.**

The information contained in Item 1.01 of this Current Report on Form 8-K is incorporated by reference in this Item 2.03.

**Item 9.01**&nbsp;&nbsp;&nbsp;&nbsp;**Financial Statements and Exhibits.**

(d) Exhibits

---

| | |
|:---|:---|
| <u>[1.1](main-march 2026xunderwritin.htm)</u> | <u>[Underwriting Agreement, dated](main-march 2026xunderwritin.htm)[March 27, 2026](main-march 2026xunderwritin.htm)[, between Main Street Capital Corporation and](main-march 2026xunderwritin.htm)[RBC Capital Markets, LLC](main-march 2026xunderwritin.htm)[,](main-march 2026xunderwritin.htm)[as representative of the underwriters named](main-march 2026xunderwritin.htm)[on](main-march 2026xunderwritin.htm)[Schedule A thereto](main-march 2026xunderwritin.htm)</u> |
| <u>[5.1](main-mar 2026xex51legalityo.htm)</u> | <u>[Opinion of Dechert LLP, dated March 31, 2026](main-mar 2026xex51legalityo.htm)</u> |
| 23.1 | Consent of Dechert LLP (included in Exhibit 5.1) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

---

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
| | **Main Street Capital Corporation** | **Main Street Capital Corporation** |
| Date: March 31, 2026 | By: | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/s/ Jason B. Beauvais* |
|  |  | Name:&nbsp;&nbsp;&nbsp;&nbsp;Jason B. Beauvais |
|  |  | Title:&nbsp;&nbsp;&nbsp;&nbsp; General Counsel |

---

## Exhibit 1.1

<u>1900 K Street, NWWashington, DC 20006-1110+1 202 261 3300 Main+1 202 261 3333 Faxwww.dechert.com</u>

![image_1.jpg](image_1.jpg)

**Exhibit 5.1**

March 31, 2026

Main Street Capital Corporation1300 Post Oak Boulevard, Suite 800Houston, TX 77056

Ladies and Gentlemen:

We have acted as counsel to Main Street Capital Corporation, a Maryland corporation

(the "***Company***"), in connection with the preparation and filing of a registration statement on

Form N-2 (File No. 333-285405) (as amended as of the date hereof, the "***Registration***

***Statement***") filed by the Company with the U.S. Securities and Exchange Commission (the

"***Commission***") under the Securities Act of 1933, as amended (the "***Securities Act***"), which

became effective immediately upon its filing on February 28, 2025, and the final prospectus

supplement, dated March 27, 2026 (including the base prospectus filed therewith, the

"***Prospectus***"), filed with the Commission on March 31, 2026 pursuant to Rule 424 under the

Securities Act, relating to the proposed issuance by the Company of an additional $200,000,000

aggregate principal amount of 6.95% notes due 2029 (the "***Notes***"), to be sold to underwriters

pursuant to an underwriting agreement, dated as of March 27, 2026, which is substantially in the

form filed as Exhibit 1.1 to the Company's Current Report on Form 8-K filed with the

Commission on March 31, 2026 (the "***Underwriting Agreement***"). All of the Notes are to be sold

by the Company as described in the Registration Statement and related Prospectus. This opinion

letter is being furnished to the Company in accordance with the requirements of Item 25 of

Form N-2 under the Securities Act, and we express no opinion herein as to any matter other than

as to the legality of the Notes.

The Notes will be issued pursuant to the indenture, incorporated by reference as an

exhibit to the Registration Statement, entered into between the Company and The Bank of New

York Mellon Trust Company, N.A., as trustee (the "***Trustee***"), on April 2, 2013, as supplemented

by a sixth supplemental indenture, filed as Exhibit 4.1 to the Company's Current Report on Form

8-K filed with the Commission on January 12, 2024 (collectively, the "***Indenture***").

As counsel to the Company, we have participated in the preparation of the Registration

Statement and the Prospectus and have examined the originals or copies of the following:

Main Street Capital Corporation

March 31, 2026

(i)The Articles of Amendment and Restatement of the Company, certified as of the

date hereof by an officer of the Company;

(ii)The Amended and Restated Bylaws of the Company, certified as of the date

hereof by an officer of the Company;

(iii)A Certificate of Good Standing with respect to the Company issued by the State

Department of Assessments and Taxation of the State of Maryland as of a recent

date;

(iv)The resolutions of the board of directors of the Company, or a duly authorized

committee thereof, relating to, among other things, (a) the authorization and

approval of the preparation and filing of the Registration Statement, (b) the

authorization, execution and delivery of the Indenture; and (c) the authorization,

issuance and sale of the Notes, certified as of the date hereof by an officer of the

Company;

(v)The Underwriting Agreement;

(vi)The Indenture; and

(vii)A specimen copy of the form of the Notes to be issued pursuant to the Indenture

in the form attached to the Indenture.

With respect to such examination and our opinion expressed herein, we have assumed,

without any independent investigation or verification, (i) the genuineness of all signatures of

persons signing all documents submitted to us for examination in connection with which this

opinion is rendered, (ii) the legal capacity of all natural persons, (iii) the authenticity of all

documents submitted to us as originals, (iv) the conformity to original documents of all

documents submitted to us as conformed or reproduced copies and the authenticity of the

originals of such copied documents, (v) the legal power and authority of all persons signing on

behalf of the parties to all such documents (other than the Company), (vi) the due authorization,

execution and delivery of all documents by the parties thereto (other than the Company), (vii) that

all certificates issued by public officials have been properly issued, (viii) that the Indenture will

be a valid and legally binding obligation of the parties thereto (other than the Company), (ix) the

accuracy and completeness of all corporate records made available to us by the Company, and

(x) that at the time of issuance of the Notes, after giving effect to such issuance, the Company

will be in compliance with Section 18(a)(1)(A) of the Investment Company Act of 1940, as

amended (the "***1940 Act***"), giving effect to Section 61(a) of the 1940 Act.

Main Street Capital Corporation

March 31, 2026

As to certain matters of fact relevant to the opinions in this opinion letter, we have relied

upon certificates and/or representations of officers of the Company. We have also relied on

certificates and confirmations of public officials. We have not independently established the facts,

or in the case of certificates or confirmations of public officials, the other statements, so relied

upon.

This opinion letter is limited to the contract laws of the State of New York, and, to the

extent relevant to the opinion expressed herein, the applicable provisions of the Maryland General

Corporation Law, in each case as in effect on the date hereof, and we express no opinion with

respect to any other laws of such jurisdictions or the laws of any other jurisdictions. Without

limiting the preceding sentence, we express no opinion with respect to the "blue sky" or other

securities laws or regulations of the State of Maryland or any other jurisdiction or as to any state

securities or broker dealer laws or regulations thereunder relating to the offer, issuance and sale of

the Notes. This opinion letter has been prepared, and should be interpreted, in accordance with

customary practice followed in the preparation of opinion letters by lawyers who regularly give,

and such customary practice followed by lawyers who on behalf of their clients regularly advise

opinion recipients regarding, opinion letters of this kind.

Based upon and subject to the limitations, exceptions, qualifications and assumptions set

forth in this opinion letter, we are of the opinion that, when the Notes are duly executed and

delivered by duly authorized officers of the Company and duly authenticated by the Trustee, all in

accordance with the provisions of the Indenture, and delivered to the underwriters against

payment therefor in accordance with the terms of the Underwriting Agreement, the Notes will

constitute valid and legally binding obligations of the Company, enforceable against the

Company in accordance with their terms, except as such enforceability may be limited by

applicable bankruptcy, insolvency, reorganization, receivership, moratorium, fraudulent

conveyance, and other similar laws affecting the rights and remedies of creditors generally and by

general principles of equity (including without limitation the availability of specific performance

or injunctive relief and the application of concepts of materiality, reasonableness, good faith and

fair dealing), regardless of whether considered in a proceeding at law or in equity.

The opinions expressed in this opinion letter (a) are strictly limited to the matters stated in

this opinion letter, and without limiting the foregoing, no other opinions are to be implied and (b)

are only as of the date of this opinion letter, and we are under no obligation, and do not undertake,

to advise the Company or any other person or entity either of any change of law or fact that

occurs, or of any fact that comes to our attention, after the date of this opinion letter, even though

such change or such fact may affect the legal analysis or a legal conclusion in this opinion letter.

We hereby consent to the filing of this opinion as an exhibit to the Company's Current

Report on Form 8-K filed with the Commission on March 31, 2026 and to the reference to our

Main Street Capital Corporation

March 31, 2026

firm in the "Legal Matters" section in the Prospectus. We do not admit by giving this consent that

we are in the category of persons whose consent is required under Section 7 of the Securities Act

or the rules and regulations of the Commission thereunder.

Very truly yours,

/s/ Dechert LLP