Main Street Capital funds $162M in private loans in Q3

As of September 30, 2026, first lien senior secured debt represented 92.6% of private-loan portfolio cost across 86 companies.

Rhea-AI Filing Summary

Main Street Capital Corporation reported that during the third quarter of 2026 it originated new or increased commitments in its private loan portfolio totaling $157.2 million and funded portfolio investments with a cost basis totaling $162.0 million. As of September 30, 2026, the portfolio had approximately $2.1 billion in investments at cost across 86 unique companies; 92.6% of cost was in first lien senior secured debt and 7.4% in equity investments or other securities.

Notable activity included financing for a medium-voltage cable distributor: a $30.0 million term loan, $16.9 million revolver, $18.8 million delayed draw term loan and $1.1 million in equity. Main Street also listed $35.2 million in term-loan, $6.4 million revolver, $12.8 million delayed-draw and $1.6 million equity financing for a power-systems integration provider, and $17.9 million in term-loan, $5.3 million revolver and $1.6 million equity financing for an industrial mixing equipment manufacturer.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Figures

New or increased private loan commitments: $157.2 million Funded private loan investments at cost basis: $162.0 million Private loan investments at cost: Approximately $2.1 billion +3 more

6 metrics

New or increased private loan commitments $157.2 million Third quarter of 2026

Funded private loan investments at cost basis $162.0 million Third quarter of 2026

Private loan investments at cost Approximately $2.1 billion As of September 30, 2026

Unique companies 86 companies Private loan portfolio as of September 30, 2026

First lien senior secured debt 92.6% Share of private loan portfolio cost as of September 30, 2026

Equity investments or other securities 7.4% Share of private loan portfolio cost as of September 30, 2026

Key Terms

first lien senior secured, delayed draw term loan, revolver, cost basis

4 terms

first lien senior secured financial

"92.6% invested in first lien senior secured debt investments"

Debt described as "first lien senior secured" has the top priority claim on a borrower’s specified assets and must be repaid before other debts if the borrower defaults. Think of it as being first in line with a lien acting like a mortgage on particular assets; because it’s backed by collateral and ranks ahead of other creditors, it generally carries lower risk and affects how investors assess potential recovery and interest rates.

delayed draw term loan financial

"$18.8 million in a first lien senior secured delayed draw term loan"

A delayed draw term loan is a financing agreement that lets a borrower take one or more lump-sum loans from a lender at agreed future dates within a set time window instead of receiving all funds up front. It matters to investors because it changes when and how much debt a company will carry, affecting cash flexibility, interest costs and risk exposure—think of it like an approved credit line you only tap when you need cash for a project.

revolver financial

"$16.9 million in a first lien senior secured revolver"

A revolver is a revolving credit facility — a line of borrowing a company can draw, repay and draw again as needed, similar to a corporate credit card for short-term cash needs. It matters to investors because it provides liquidity and flexibility to cover expenses, smooth cash flow swings, or bridge financing gaps; the size, cost and covenants of the revolver affect a company’s interest costs, financial health and default risk.

cost basis financial

"funded total investments across its private loan portfolio with a cost basis totaling"

The cost basis is the original amount you paid to buy a stock, bond, or other investment, plus any fees or adjustments that change that original cost over time (for example, reinvested dividends or stock splits). It matters because profit or loss — and the taxes you owe when you sell — are calculated by comparing the sale price to this purchase amount; think of it like the purchase price of a house used to determine your gain when you sell.

FAQ

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

How much did MAIN commit and fund in its private loan portfolio in the third quarter of 2026?

Main Street originated new or increased private loan commitments totaling $157.2 million and funded private loan investments with a cost basis totaling $162.0 million during the third quarter of 2026.

How large was MAIN's private loan portfolio at September 30, 2026?

Main Street's private loan portfolio included approximately $2.1 billion in investments at cost across 86 unique companies as of September 30, 2026. First lien senior secured debt represented 92.6% of portfolio cost, while equity investments or other securities represented 7.4%.

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

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Available on EDGAR 10/08/2026 - 09:30 AM Accepted by SEC EDGAR 10/08/2026 - 09:30 AM Learn about SEC filing dates

0001396440false00013964402026-10-082026-10-08

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) October 8, 2026

__________________________________________________________________________

Main Street Capital Corporation

(Exact name of registrant as specified in its charter)

Maryland	814-00746	41-2230745
(State or other jurisdiction 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:

o	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o	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:

Title of each class	Trading Symbol	Name of each exchange on which registered
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 o

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. o

Item 2.02Results of Operations and Financial Condition.

On October 8, 2026, the Registrant issued a press release. A copy of such press release is attached hereto as Exhibit 99.1

and is incorporated herein by reference.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed

“filed” for purposes of Section 18 of the Securities Exchange Act of 1934 and shall not be deemed incorporated by

reference into any filing made under the Securities Act of 1933, except as expressly set forth by specific reference in such

filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

99.1	Press release dated October 8, 2026
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
Date: October 8, 2026	By:	/s/ Jason B. Beauvais
		Name:    Jason B. Beauvais
		Title:      General Counsel

Exhibit 99.1

	NEWS RELEASE
	Contacts: Main Street Capital Corporation Dwayne L. Hyzak, CEO, dhyzak@mainstcapital.com Ryan R. Nelson, CFO, rnelson@mainstcapital.com 713-350-6000 Dennard Lascar Investor Relations Ken Dennard / ken@dennardlascar.com Zach Vaughan / zvaughan@dennardlascar.com 713-529-6600

Main Street Announces Third Quarter 2026 Private Loan Portfolio Activity

HOUSTON – October 8, 2026 – Main Street Capital Corporation (NYSE: MAIN) (“Main

Street”) is pleased to announce the following recent activity in its private loan portfolio. During

the third quarter of 2026, Main Street originated new or increased commitments in its private

loan portfolio totaling $157.2 million and funded total investments across its private loan

portfolio with a cost basis totaling $162.0 million.

The following represent notable new private loan commitments and investments during the third

quarter of 2026:

•$30.0 million in a first lien senior secured term loan, $16.9 million in a first lien senior

secured revolver, $18.8 million in a first lien senior secured delayed draw term loan and

$1.1 million in equity to a distributor of medium-voltage cables and accessories;

•$35.2 million in a first lien senior secured term loan, $6.4 million in a first lien senior

secured revolver, $12.8 million in a first lien senior secured delayed draw term loan and

$1.6 million in equity to a provider of manufacturer representation and power systems

integration services; and

•$17.9 million in a first lien senior secured term loan, $5.3 million in a first lien senior

secured revolver and $1.6 million in equity to a manufacturer of industrial mixing

equipment.

As of September 30, 2026, Main Street’s private loan portfolio included total investments at cost

of approximately $2.1 billion across 86 unique companies. The private loan portfolio, as a

percentage of cost, included 92.6% invested in first lien senior secured debt investments and

7.4% invested in equity investments or other securities.

ABOUT MAIN STREET CAPITAL CORPORATION

Main Street (www.mainstcapital.com) is a principal investment firm that primarily provides

customized long-term debt and equity capital solutions to lower middle market companies and

debt capital to private companies owned by or in the process of being acquired by a private

equity fund. Main Street’s portfolio investments are typically made to support management

buyouts, recapitalizations, growth financings, refinancings and acquisitions of companies that

operate in diverse industry sectors. Main Street seeks to partner with entrepreneurs, business

owners and management teams and generally provides customized “one-stop” debt and equity

financing solutions within its lower middle market investment strategy. Main Street seeks to

partner with private equity fund sponsors and primarily invests in secured debt investments in its

private loan investment strategy. Main Street’s lower middle market portfolio companies

generally have annual revenues between $10 million and $150 million. Main Street’s private

loan portfolio companies generally have annual revenues between $25 million and $500 million.

Main Street, through its wholly-owned portfolio company MSC Adviser I, LLC dba Main Street

Capital Partners (“MSCP Adviser”), also maintains an asset management business through which

it manages investments for external parties. MSCP Adviser is registered as an investment adviser

under the Investment Advisers Act of 1940, as amended.

Filing Exhibits & Attachments

4 documents

Press Releases

• EX-99.1 EX-99.1 37.0 KB

Other Documents

• EX-101 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT 1.8 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT 22.0 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT 12.8 KB