MAIN

EX-99.1

2 main-q32026xprexerxexx991.htm

EX-99.1

MAIN - Q3 2026 - Pre-ER - EX-99.1

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 Preliminary Estimate of Third Quarter 2026

Operating Results

Announces Third Quarter 2026 Earnings Release and Conference Call Schedule

HOUSTON – October 15, 2026 – Main Street Capital Corporation (NYSE: MAIN) (“Main

Street” or the “Company”) is pleased to announce its preliminary operating results for the third

quarter of 2026 and its third quarter 2026 earnings release and conference call schedule.

In commenting on the Company’s preliminary operating results for the third quarter of 2026,

Dwayne L. Hyzak, Main Street’s Chief Executive Officer, stated, “We are pleased with our

performance in the third quarter, which resulted in another quarter of strong operating results,

including distributable net investment income before taxes that was in line with our expectations

and prior guidance provided on our last conference call and an increase to our net asset value per

share for the seventeenth consecutive quarter. We look forward to sharing the full details of our

third quarter 2026 results in a few weeks.”

Preliminary Estimates of Third Quarter 2026 Results

Main Street’s preliminary estimate of third quarter 2026 net investment income (“NII”) is $0.87

to $0.91 per share, distributable net investment income (“DNII”)(1) is $0.94 to $0.98 per share

and DNII before taxes(2) is $0.96 to $1.00 per share.

Main Street’s preliminary estimate of net asset value (“NAV”) per share as of September 30,

2026 is $34.18 to $34.26, representing an increase of $0.26 to $0.34 per share, or 0.8% to 1.0%,

from the NAV per share of $33.92 as of June 30, 2026, with this increase after the impact of the

supplemental dividend paid in September 2026 of $0.30 per share. The estimated NAV per share

increase is primarily due to the net fair value appreciation on the investment portfolio, including

realized and unrealized activity, and the accretive impact of equity issuances, partially offset by

the total dividends per share paid in the third quarter in excess of NII per share and the net tax

provision. The net fair value appreciation on the investment portfolio is primarily the result of

net fair value appreciation on the lower middle market (“LMM”) investment portfolio, private

loan investment portfolio and other portfolio investments, partially offset by net fair value

depreciation on the middle market investment portfolio and fair value depreciation of the wholly-

owned external investment manager.

As a result of Main Street’s preliminary estimates of NII, net fair value appreciation and the net

tax provision as noted above, Main Street estimates that it generated an annualized return on

equity of over 14% for the third quarter.(3)

Main Street preliminarily estimates that investments on non-accrual status comprised 0.9% of the

total investment portfolio at fair value and 3.5% at cost as of September 30, 2026.

Additionally, during the quarter, Main Street Mezzanine Fund, LP, an investment fund wholly-

owned by the Company and licensed as a Small Business Investment Company (“SBIC”) by the

U.S. Small Business Administration (“SBA”), received approval from the SBA to increase the

borrowing capacity of its SBIC debentures by $75.0 million to $250.0 million. Combined with

Main Street’s other wholly-owned investment fund licensed as an SBIC, Main Street Capital III,

LP, this gives Main Street access to $425.0 million of the recently increased $475.0 million of

regulatory maximum SBIC debenture borrowing capacity for affiliated SBIC funds. Main Street

expects to maintain SBIC debentures under the SBIC program in the future, subject to periodic

repayments and borrowings, in an amount up to the regulatory maximum amount.

Investment Portfolio Activity

The Company’s third quarter 2026 operating activities include the following investment activity

in the LMM and private loan investment strategies:

•$61.5 million in total LMM portfolio investments, which after aggregate repayments,

return of invested equity capital and a decrease in cost basis due to a realized loss resulted

in a net decrease of $19.4 million in the total cost basis of the LMM investment portfolio;

and

•$162.0 million in total private loan portfolio investments, which after aggregate

repayments, return of invested equity capital and a decrease in cost basis due to realized

losses resulted in a net decrease of $1.8 million in the total cost basis of the private loan

investment portfolio.

Third Quarter 2026 Earnings Release and Conference Call Schedule

Main Street will release its third quarter 2026 results on Thursday

EX-99.1

2 main-q32026xplprxexx991.htm

EX-99.1

MAIN - Q3 2026 - PL PR - EX-99.1

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.

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