Main Street Capital Corporation · NYSE:MAIN

Main Street Capital — IPO Roadshow (February 2021)

90 slides from Main Street Capital's IPO roadshow presentation, Feb 26, 2021

  1. Slide 1: Investor Presentation Fourth Quarter 2020

    Investor Presentation Fourth Quarter – 2020 MaMinainStSrtreeetCCaapiptailtaClorCporraptionration NYSNEY:SEM: MAAININ mmaaiinnstccaappitaitl.aclo.mcom Page 1

  2. Slide 2: Disclaimers

    Disclaimers Main Street Capital Corporation (MAIN) cautions that statements in this presentation that are forward-looking, and provide other than historical information, involve risks and uncertainties that may impact our future results of operations. The forward-looking statements in this presentat

  3. Slide 3: Corporate Overview and Investment Strategy

    Main Street Capital Corporation Corporate Overview and Investment Strategy 4th Quarter – 2020 Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 3

  4. Slide 4: MAIN is a Principal Investor in Private Debt and Equity

    MAIN is a Principal Investor in Private Debt and Equity Hybrid debt and equity investment strategy, internally managed operating structure and focus on Lower Middle Market differentiates MAIN from other investment firms Internally-managed Business Development Company (BDC) • • IPO in 2007 $4.3 billi

  5. Slide 5: MAIN is a Principal Investor in Private Debt and Equity

    MAIN is a Principal Investor in Private Debt and Equity Long-term focus on delivering our shareholders sustainable growth in net asset value and recurring dividends per share MAIN’s unique investment strategy, efficient operating structure and conservative capitalization are designed to provide sust

  6. Slide 6: MAIN is a Principal Investor in Private Debt and Equity

    MAIN is a Principal Investor in Private Debt and Equity Equity investments in LMM portfolio provide both the opportunity to grow net asset value (NAV) per share and generate recurring dividend income and periodic realized gains to support MAIN’s dividend growth Focus on LMM equity investments and ef

  7. Slide 7: MAIN Strategy Produces Differentiated Returns

    MAIN Strategy Produces Differentiated Returns Enhanced Value Proposition - Three Ways to Win are Better Than One 1. Sustain and Grow Dividends • Efficient operating structure provides operating leverage to grow distributable net investment income, and dividends paid, as investment portfolio and tota

  8. Slide 8: Historical Monthly Dividends, NAV and DNII Per Share

    Historical Monthly Dividends, Net Asset Value (“NAV”) and Distributable Net Investment Income (“DNII”)(1) Per Share $0.80 $26.00 MAIN’s unique focus on equity investments in the Lower Middle Market provides the opportunity for significant NAV per share growth MAIN’s efficient operating structure pro

  9. Slide 9: Lower Middle Market (LMM) Investment Strategy

    Lower Middle Market (LMM) Investment Strategy LMM investment strategy differentiates MAIN from its competitors and provides attractive risk-adjusted returns Investment Objectives • High cash yield from secured debt investments (10.9% weighted-average cash coupon as of December 31, 2020); plus Divide

  10. Slide 10: LMM Investment Opportunity

    LMM Investment Opportunity MAIN targets LMM investments in established, profitable companies Characteristics of LMM provide beneficial risk-reward investment opportunities Large and critical portion of U.S. economy •175,000+ domestic LMM businesses(1) LMM is under-served from a capital perspective a

  11. Slide 11: Private Loan Investment Strategy

    Private Loan Investment Strategy Investment Objectives Private Loan portfolio investments are primarily debt investments in privately held companies which have been originated through strategic relationships with other investment funds on a collaborative basis, and are often referred to in the debt

  12. Slide 12: Middle Market Debt Investment Strategy

    Middle Market Debt Investment Strategy Investment Objective •Generate cash yield to support MAIN monthly dividend MAIN maintains a portfolio of debt investments in Middle Market companies Investments in secured and/or rated debt investments •First lien, senior secured debt investments •Floating rate

  13. Slide 13: Asset Management Business

    Asset Management Business MAIN’s asset management business represents additional income diversification and the opportunity for greater shareholder returns MAIN’s internally managed operating structure provides MAIN’s shareholders the benefits of this asset management business In May 2012, MAIN(1) e

  14. Slide 14: MAIN Regulatory Framework

    MAIN Regulatory Framework Highly regulated structure provides significant advantages and protections to our shareholders, including investment transparency, tax efficiency and beneficial leverage Operates as a Business Development Company •Regulated by Securities and Exchange Commission - 1940 Act •

  15. Slide 15: MAIN Corporate Structure – Internally Managed

    MAIN Corporate Structure – Internally Managed “Internally managed” structure means no external management fees or expenses ar providing operating leverage to MAIN’s business; MAIN targets total operating administrative less than 2% of assets (1) As of December 31, 2020, MAIN’s credit facility had $7

  16. Slide 16: MAIN Co-Founders and Executive Management Team

    MAIN Co-Founders and Executive Management Team • Co-founded MAIN; Joined Main Street group in 2002; affiliated with Main Street group since 1999 Director of acquisitions / integration with Quanta Services (NYSE: PWR) Manager with a Big 5 Accounting Firm’s audit and transaction services groups • • •

  17. Slide 17: Monthly Dividends Per Share – Sustainable Growth

    Monthly Dividends Per Share – Sustainable Growth Recurring monthly dividend has never been decreased and has shown meaningful (86%) growth since IPO Based upon the current annualized monthly dividends for the second quarter of 2021, the annual effective yield on MAIN’s stock is 6.7%(1) MAIN has also

  18. Slide 18: Investment Portfolio

    Main Street Capital Corporation Investment Portfolio 4th Quarter – 2020 Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 18

  19. Slide 19: Total Investment Portfolio

    Total Investment Portfolio Includes complementary LMM debt and equity investments, Private Loan debt investments and Middle Market debt investments Diversity provides structural protection to investment portfolio, revenue sources, income, cash flows and shareholder dividends Total investment portfol

  20. Slide 20: Total Portfolio by Industry

    (1) Total Portfolio by Industry (as a Percentage of Cost) Machinery, 6% Aerospace & Defense, 6% Health Care Providers & Services, 5% Commercial Services & Supplies, 5% Software, 5% IT Services, 4% Oil, Gas & Consumable Fuels, 3% Hotels, Restaurants & Leisure, 3% Food Products, 3% Media, 2% Diversifi

  21. Slide 21: Diversified Total Portfolio

    (1) Diversified Total Portfolio (as a Percentage of Cost) tion/ (1) Excluding MAIN’s Other Portfolio investments and the External Investment Manager, as described in MAIN’s public filings, which represent approximately 6% of the total portfolio (2) Based upon portfolio company headquarters and exclu

  22. Slide 22: LMM Investment Portfolio

    LMM Investment Portfolio 70 portfolio companies / $1,285.5 million in fair value •48% of total investment portfolio at fair value LMM Investment Portfolio consists of a diversified mix of secured debt and lower cost basis equity investments Debt yielding 11.6%(1) (66% of LMM portfolio at cost) • • •

  23. Slide 23: LMM Investment Portfolio

    LMM Investment Portfolio LMM Investment Portfolio is a pool of high quality, seasoned assets with attractive risk-adjusted return characteristics Median LMM portfolio credit statistics: • • • Senior leverage of 3.0x EBITDA through MAIN debt position 2.4x EBITDA to senior interest coverage Total leve

  24. Slide 24: LMM Portfolio by Industry

    LMM Portfolio by Industry (as a Percentage of Cost) Professional Services, 9% Energy Equipment & Services, 8% Software, 7% Leisure Equipment & Products, 5% Internet Software & Services, 4% Containers & Packaging, 3% Computers & Peripherals, 3% Commercial Services & Supplies, 3% Health Care Providers

  25. Slide 25: Diversified LMM Portfolio

    Diversified LMM Portfolio (as a Percentage of Cost) (1) Based upon portfolio company headquarters Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 25 Invested Capital by Transaction Type LBO/MBORecapitalization/ Refinancing 35% 54% 6% 5% Acquisition Growth Capital Invested Capital b

  26. Slide 26: LMM Portfolio Attributes Reflect Investment Strategy

    LMM Portfolio Attributes Reflect Investment Strategy High yielding secured debt investments coupled with significant equity participation = Attractive risk-adjusted returns Weighted-Average Effective Yield = 11.6% Average Fully Diluted Equity Ownership = 38% Main Street Capital Corporation NYSE: MAI

  27. Slide 27: Term and Total Interest Coupon of Existing LMM Debt Investments

    Term and Total Interest Coupon of Existing LMM Debt Investments 38% <10% Current Interest Interest Debt Investments generally have a 5-Year Original Term and ~2.5 Year Weighted-Average Remaining Duration;Weighted-Average Effective Yield of 11.6% on Debt Portfolio (1) Interest coupon excludes amortiz

  28. Slide 28: Private Loan Investment Portfolio

    Private Loan Investment Portfolio Private Loan Investment Portfolio provides a diversified mix of investments and sources of income to complement the LMM Investment Portfolio 63 investments / $740.4 million in fair value •27% of total investment portfolio at fair value Average investment size of $12

  29. Slide 29: Middle Market Investment Portfolio

    Middle Market Investment Portfolio Middle Market Investment Portfolio provides a diversified mix of investments and diverse sources of income to complement the LMM Investment Portfolio and a potential source of liquidity for MAIN’s future investment activities 42 investments / $445.6 million in fair

  30. Slide 30: Private Loan & Middle Market Portfolios by Industry

    Private Loan & Middle Market Portfolios by Industry (as a Percentage of Cost) Aerospace & Defense, 11% Internet Software & Services, 7% Communications Equipment, 6% Machinery, 5% Construction & Engineering, 5% Leisure Equipment & Products, 4% Diversified Financial Services, 3% Trading Companies & Di

  31. Slide 31: Diversified Private Loan & Middle Market Investments

    Diversified Private Loan & Middle Market Investments (as a Percentage of Cost) (1) Based upon portfolio company headquarters and excluding any MAIN investments headquartered outside the U.S., which represent approximately 2% of the combined Private Loan and Middle Market portfolios Main Street Capit

  32. Slide 32: Financial Overview

    Main Street Capital Corporation Financial Overview 4th Quarter – 2020 Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 32

  33. Slide 33: MAIN Financial Performance

    MAIN Financial Performance Year over Year Growth Year over Year Growth (9)% 14% 1% (11)% 8% 15% 13% 4% 10% 17% $260.0 $240.0 $220.0 $200.0 $180.0 $160.0 $140.0 $120.0 $100.0 $80.0 $60.0 $40.0 $20.0 $0.0 $180.0 $160.0 $140.0 $120.0 $100.0 $80.0 $60.0 $40.0 $20.0 $0.0 2015 2016 2017 2018 2019 2020 201

  34. Slide 34: Long-Term Portfolio and DNII Per Share Growth

    Long-Term Portfolio and DNII(1) Per Share Growth MAIN has grown Portfolio Investments and DNII per share ($ in millions, except per share data) $2.76 $2.66 $2,800 $2,600 $2,400 $2,200 $2,000 $1,800 $1,600 $1,400 $1,200 $1,000 $800 $600 $400 $200 $0 $2.80 $2.60 $2.40 $2.20 $2.00 $1.80 $1.60 $1.40 $1.

  35. Slide 35: Efficient and Leverageable Operating Structure

    Efficient and Leverageable Operating Structure MAIN’s internally managed operating structure provides significant operating leverage and greater returns for our shareholders “Internally managed” structure means no external management fees or expenses are paid Alignment of interest between management

  36. Slide 36: MAIN Maintains a Significant Operating Cost Advantage

    MAIN Maintains a Significant Operating Cost Advantage Operating Expenses as a Percentage of Total Assets(1) 4.0% 3.5% 3.0% 2.5% 2.0% 1.5% 1.0% 0.5% 0.0% (1) (2) (3) (4) Total operating expenses excluding interest expense For the year ended December 31, 2020 For the year ended December 31, 2020, excl

  37. Slide 37: MAIN Income Statement Summary

    MAIN Income Statement Summary Total Investment Income $ 60,649 $56,150 $ 52,007 $ 51,954 $ 62,504 3% Expenses: Interest Expense G&A Expense (13,122) (5,477) (12,441) (4,327) (11,898) (5,998) (12,489) (6,442) (12,761) (7,488) 3% (37)% Distributable Net Investment Income (DNII)(3) DNII Margin % 42,050

  38. Slide 38: MAIN Per Share Change in Net Asset Value

    MAIN Per Share Change in Net Asset Value (NAV) Beginning NAV Distributable Net Investment Income(4) Share-Based Compensation Expense Net Realized Loss Net Unrealized Appreciation (Depreciation) $ 24.20 $ 23.91 $ 20.73 $ 20.85 $ 21.52 0.66 (0.04) (0.01) (0.37) 0.61 (0.04) (0.34) (3.01) 0.52 (0.04) (0

  39. Slide 39: MAIN Balance Sheet Summary

    MAIN Balance Sheet Summary LMM Portfolio Investments Middle Market Portfolio Investments $ 1,206,865 522,083 $ 1,168,150 418,442 $ 1,188,006 410,501 $ 1,228,060 441,292 $ 1,285,521 445,610 Private Loan Investments 692,117 629,094 653,824 743,684 740,371 Other Portfolio Investments External Investmen

  40. Slide 40: MAIN Liquidity and Capitalization

    MAIN Liquidity and Capitalization Cash and Cash Equivalents $ 55,246 $ 54,188 $ 68,539 $ 27,121 $ 31,919 Availability Under Credit Facility (1) 405,000 463,000 425,000 487,000 511,000 Remaining SBIC Debentures Capacity 35,200 20,200 35,200 45,200 40,200 Total Liquidity $ 495,446 $ 537,388 $ 528,739

  41. Slide 41: Stable, Long-Term Leverage – Significant Unused Capacity

    Stable, Long-Term Leverage – Significant Unused Capacity Facility MAIN maintains a conservative capital structure, with limited overall leverage and low cost, long-term debt Capital structure is designed to correlate to and complement the expected duration and fixed/floating rate nature of investmen

  42. Slide 42: Long-term Maturity of Debt Obligations

    Long-term Maturity of Debt Obligations MAIN’s conservative capital structure provides long-term access to attractively-priced and structured debt facilities $400 $350 $300 • Allows for investments in assets with long-term holding periods / illiquid positions and greater yields and overall returns Pr

  43. Slide 43: Interest Rate Impact and Sensitivity

    Interest Rate Impact and Sensitivity The following table illustrates the approximate annual changes in the components of MAIN’s net investment income due to hypothetical increases (decreases) in interest rates(1)(2) (dollars in thousands): While MAIN’s financial results are subject to significant im

  44. Slide 44: Significant Management Ownership / Investment

    Significant Management Ownership / Investment Significant equity ownership by MAIN’s management team, coupled with internally managed structure, provides alignment of interest between MAIN’s management and our shareholders Management (1) 3,334,330 $107,565,486 (1) (2) Includes members of MAIN’s exec

  45. Slide 45: MAIN Total Return Performance Since IPO

    MAIN Total Return Performance Since IPO COVID Pandemic Recessionary Period Notes: (1) (2) Assumes dividends reinvested on date paid The Main Street Peer Group includes all BDCs that have been publicly-traded for at least one year and that have total assets greater than $500 million based on individu

  46. Slide 46: Executive Summary

    Executive Summary Unique focus on under-served Lower Middle Market • • • Inefficient asset class with less competition Unique market opportunity with attractive risk-adjusted returns Generally first lien, senior secured debt investments plus meaningful equity participation Invest in complementary in

  47. Slide 47: Non-GAAP Information

    Non-GAAP Information Distributable net investment income is net investment income, as determined in accordance with U.S. generally accepted accounting principles, or U.S. GAAP, excluding the impact of share-based compensation expense which is non-cash in nature. MAIN believes presenting distributabl

  48. Slide 48: MAIN Corporate Data

    MAIN Corporate Data Please visit our website at www.mainstcapital.com for additional information Board of Directors Board of Directors (cont.) Research Coverage Corporate Headquarters Investor Relation Contacts Valerie L. Banner SVP, Governance & Risk Exterran Corporation Stephen B. Solcher Executiv

  49. Slide 49: Debt Capital Markets Presentation Fourth Quarter 2020

    Debt Capital Markets Presentation Fourth Quarter – 2020 MaMinainStSrtreeetCCaapiptailtaClorCporraptionration NYSNEY:SEM: MAAININ mmaaiinnstccaappitaitl.aclo.mcom Page 1

  50. Slide 50: Disclaimers

    Disclaimers Main Street Capital Corporation (MAIN) cautions that statements in this presentation that are forward-looking, and provide other than historical information, involve risks and uncertainties that may impact our future results of operations. The forward-looking statements in this presentat

  51. Slide 51: Main Street Capital Corporation 4th Quarter – 2020

    Main Street Capital Corporation 4th Quarter – 2020 Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 3

  52. Slide 52: MAIN is a Principal Investor in Private Debt and Equity

    MAIN is a Principal Investor in Private Debt and Equity Hybrid debt and equity investment strategy, internally managed operating structure and focus on Lower Middle Market differentiates MAIN from other investment firms Conservative capital structure with S&P rating of BBB-/Stable outlook Internally

  53. Slide 53: Investment Portfolio – By Type of Investment

    Investment(1) Investment Portfolio – By Type of Total Investment Portfolio $2,684.9 million Total Debt Investments $1,807.1 million Debt Investments, 67.3%, $1,807.1m First Lien Debt, 95.6%, $1,728.0m Other Portfolio, 3.6%, $96.6m Equity, 29.1%, $781.2m Junior Debt, 4.4%, $79.1m (1) Fair value as of

  54. Slide 54: Unique Investment Strategy

    Unique Investment Strategy MAIN’s investment strategy differentiates MAIN from its competitors and provides highly attractive risk-adjusted returns Business Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 6 Asset Management •Monetizing value of MAIN’s intangible assets •Significant

  55. Slide 55: Portfolio Highlights

    Portfolio Highlights(1) The benefits of MAIN’s unique investment strategy has resulted in a high quality, diversified and mature investment portfolio floating rates(2) 8.7%(3) including $96.6 million of Other Portfolio • 96% of debt investments are first lien(2) floating rates(2) investments of 9.5%

  56. Slide 56: Business Development Company (BDC) Background

    Business Development Company (BDC) Background Created by Congress in 1980 through the Small Business Investment Incentive Act of 1980 to facilitate the flow of capital to small and mid-sized U.S. businesses Highly regulated by the Securities and Exchange Commission under the Investment Company Act o

  57. Slide 57: MAIN Capital Structure

    MAIN Capital Structure Cash $ 31,919 Debt at parent(1) Credit Facility 5.20% Notes due 2024(2) 4.50% Notes due 2022(2) 269,000 450,000 185,000 9.9% 16.5% 6.8% Debt at subsidiaries SBIC Debentures(2) 309,800 11.4% Book value of equity 1,514,767 55.5% Debt / Capitalization 0.44x Debt / Book equity 0.8

  58. Slide 58: Conservative Leverage

    Conservative Leverage Total Assets $ 2,250,232 $ 519,132 $ 2,769,364 Debt Capital: Revolving Credit Facility(2) SBIC Debentures 269,000 - 269,000 - 303,972 303,972 Notes Payable(3) 635,653 - 635,653 Total Debt 904,653 303,972 1,208,625 Net Asset Value (NAV) 1,304,261 210,506 1,514,767 Ke y Le ve ra

  59. Slide 59: Conservative Leverage - Regulatory

    Conservative Leverage - Regulatory Passage of the Small Business Credit Availability Act in December 2017 provides the opportunity for BDCs to obtain board or shareholder approval to access additional leverage by lowering the required asset coverage to 1.50x (from 2.00x) MAIN has historically operat

  60. Slide 60: Conservative Leverage - Excess Collateral Improves Over Time

    Conservative Leverage - Excess Collateral Improves Over Time MAIN’s conservative use of leverage and use of equity to fund its growth results in significant excess collateral that provides protection to lenders Total Assets Excluding SBIC Assets Add: Equity Value of SBIC Entities (2) Total Collatera

  61. Slide 61: Key Credit Highlights

    Key Credit Highlights • Core executive management team has been together as a team for 15+ years • Extensive investment expertise and relationships • Significant management equity ownership • Meaningful operating cost advantage through efficient internally managed structure • Significant benefits th

  62. Slide 62: MAIN Co-Founders and Executive Management Team

    MAIN Co-Founders and Executive Management Team • Co-founded MAIN; Joined Main Street group in 2002; affiliated with Main Street group since 1999 Director of acquisitions / integration with Quanta Services (NYSE: PWR) Manager with a Big 5 Accounting Firm’s audit and transaction services groups • • •

  63. Slide 63: Significant Management Ownership / Investment

    Significant Management Ownership / Investment Significant equity ownership by MAIN’s management team, coupled with internally managed structure, provides alignment of interest between MAIN’s management and our stakeholders Management (1) 3,334,330 $107,565,486 (1) (2) Includes members of MAIN’s exec

  64. Slide 64: Efficient and Leverageable Operating Structure

    Efficient and Leverageable Operating Structure MAIN’s internally managed operating structure provides significant operating leverage and greater returns for our stakeholders “Internally managed” structure means no external management fees or expenses are paid Alignment of interest between management

  65. Slide 65: MAIN Maintains a Significant Operating Cost Advantage

    MAIN Maintains a Significant Operating Cost Advantage Operating Expenses as a Percentage of Total Assets(1) 4.0% 3.5% 3.0% 2.5% 2.0% 1.5% 1.0% 0.5% 0.0% (1) (2) (3) (4) Total operating expenses excluding interest expense For the year ended December 31, 2020 For the year ended December 31, 2020, excl

  66. Slide 66: Stable, Long-Term Leverage – Significant Unused Capacity

    Stable, Long-Term Leverage – Significant Unused Capacity Facility MAIN maintains a conservative capital structure, with limited overall leverage and low cost, long-term debt Capital structure is designed to correlate to and complement the expected duration and fixed/floating rate nature of investmen

  67. Slide 67: Long-term Maturity of Debt Obligations

    Long-term Maturity of Debt Obligations MAIN’s conservative capital structure provides long-term access to attractively-priced and structured debt facilities $400 $350 $300 • Allows for investments in assets with long-term holding periods / illiquid positions and greater yields and overall returns Pr

  68. Slide 68: Interest Rate Impact and Sensitivity

    Interest Rate Impact and Sensitivity The following table illustrates the approximate annual changes in the components of MAIN’s net investment income due to hypothetical increases (decreases) in interest rates(1)(2) (dollars in thousands): While MAIN’s financial results are subject to significant im

  69. Slide 69: At-The-Market (ATM) Equity Program

    At-The-Market (ATM) Equity Program Provides permanent capital to match indefinite or long-term holding period for LMM investments ATM Equity Program provides efficient, low cost capital Facilitates maintenance of conservative leverage position • Provides permanent capital to match growth of LMM inve

  70. Slide 70: Lower Middle Market (LMM) Investment Strategy

    Lower Middle Market (LMM) Investment Strategy LMM investment strategy differentiates MAIN from its competitors and provides attractive risk-adjusted returns Investment Objectives • High cash yield from secured debt investments (10.9% weighted-average cash coupon as of December 31, 2020); plus Divide

  71. Slide 71: LMM Investment Opportunity

    LMM Investment Opportunity MAIN targets LMM investments in established, profitable companies Characteristics of LMM provide beneficial risk-reward investment opportunities Large and critical portion of U.S. economy •175,000+ domestic LMM businesses(1) LMM is under-served from a capital perspective a

  72. Slide 72: Private Loan Investment Strategy

    Private Loan Investment Strategy Investment Objectives Private Loan portfolio investments are primarily debt investments in privately held companies which have been originated through strategic relationships with other investment funds on a collaborative basis, and are often referred to in the debt

  73. Slide 73: Middle Market Debt Investment Strategy

    Middle Market Debt Investment Strategy Investment Objective •Generate cash yield to support MAIN monthly dividend MAIN maintains a portfolio of debt investments in Middle Market companies Investments in secured and/or rated debt investments •First lien, senior secured debt investments •Floating rate

  74. Slide 74: Asset Management Business

    Asset Management Business MAIN’s asset management business represents additional income diversification and the opportunity for greater stakeholder returns MAIN’s internally managed operating structure provides MAIN’s stakeholders the benefits of this asset management business In May 2012, MAIN(1) e

  75. Slide 75: Total Investment Portfolio

    Total Investment Portfolio Includes complementary LMM debt and equity investments, Private Loan debt investments and Middle Market debt investments Diversity provides structural protection to investment portfolio, revenue sources, income, cash flows Total investment portfolio at fair value consists

  76. Slide 76: Portfolio Snapshot – Significant Diversification

    Portfolio Snapshot – Significant Diversification (1) Excludes the External Investment Manager, as described in MAIN’s public filings Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 28 12/31/201712/31/201812/31/201912/31/2020 Number of Portfolio Companies Lower Middle Market70696970

  77. Slide 77: Portfolio Snapshot – Significant Diversification (cont.)

    Portfolio Snapshot – Significant Diversification (cont.) (1) Excludes the External Investment Manager, as described in MAIN’s public filings Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 29 12/31/2017 12/31/2018 12/31/2019 12/31/2020 $ Invested - Fair Value Lower Middle Market $

  78. Slide 78: Portfolio Snapshot – Significant Diversification (cont.)

    Portfolio Snapshot – Significant Diversification (cont.) Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 30 12/31/201712/31/201812/31/201912/31/2020 % of Total $ Invested in Debt that is First Lien (Cost Basis) Lower Middle Market$511.0$670.5$647.4$712.6 % of Lower Middle Market98.

  79. Slide 79: Total Portfolio by Industry

    (1) Total Portfolio by Industry (as a Percentage of Cost) Machinery, 6% Aerospace & Defense, 6% Health Care Providers & Services, 5% Commercial Services & Supplies, 5% Software, 5% IT Services, 4% Oil, Gas & Consumable Fuels, 3% Hotels, Restaurants & Leisure, 3% Food Products, 3% Media, 2% Diversifi

  80. Slide 80: Diversified Total Portfolio

    (1) Diversified Total Portfolio (as a Percentage of Cost) tion/ (1) Excluding MAIN’s Other Portfolio investments and the External Investment Manager, as described in MAIN’s public filings, which represent approximately 6% of the total portfolio (2) Based upon portfolio company headquarters and exclu

  81. Slide 81: LMM Investment Portfolio

    LMM Investment Portfolio 70 portfolio companies / $1,285.5 million in fair value •48% of total investment portfolio at fair value LMM Investment Portfolio consists of a diversified mix of secured debt and lower cost basis equity investments Debt yielding 11.6%(1) (66% of LMM portfolio at cost) • • •

  82. Slide 82: LMM Investment Portfolio

    LMM Investment Portfolio LMM Investment Portfolio is a pool of high quality, seasoned assets with attractive risk-adjusted return characteristics Median LMM portfolio credit statistics: • • • Senior leverage of 3.0x EBITDA through MAIN debt position 2.4x EBITDA to senior interest coverage Total leve

  83. Slide 83: Private Loan Investment Portfolio

    Private Loan Investment Portfolio Private Loan Investment Portfolio provides a diversified mix of investments and sources of income to complement the LMM Investment Portfolio 63 investments / $740.4 million in fair value •27% of total investment portfolio at fair value Average investment size of $12

  84. Slide 84: Middle Market Investment Portfolio

    Middle Market Investment Portfolio Middle Market Investment Portfolio provides a diversified mix of investments and diverse sources of income to complement the LMM Investment Portfolio and a potential source of liquidity for MAIN’s future investment activities 42 investments / $445.6 million in fair

  85. Slide 85: Non-GAAP Information

    Non-GAAP Information Distributable net investment income is net investment income, as determined in accordance with U.S. generally accepted accounting principles, or U.S. GAAP, excluding the impact of share-based compensation expense which is non-cash in nature. MAIN believes presenting distributabl

  86. Slide 86: Appendix

    Main Street Capital Corporation Appendix Main Street Capital Corporation NYSE: MAIN mainstcapital.com Page 38

  87. Slide 87: MAIN Income Statement Summary

    MAIN Income Statement Summary Total Investment Income $ 60,649 $56,150 $ 52,007 $ 51,954 $ 62,504 3% Expenses: Interest Expense G&A Expense (13,122) (5,477) (12,441) (4,327) (11,898) (5,998) (12,489) (6,442) (12,761) (7,488) 3% (37)% Distributable Net Investment Income (DNII)(3) DNII Margin % 42,050

  88. Slide 88: MAIN Per Share Change in Net Asset Value

    MAIN Per Share Change in Net Asset Value (NAV) Beginning NAV Distributable Net Investment Income(4) Share-Based Compensation Expense Net Realized Loss Net Unrealized Appreciation (Depreciation) $ 24.20 $ 23.91 $ 20.73 $ 20.85 $ 21.52 0.66 (0.04) (0.01) (0.37) 0.61 (0.04) (0.34) (3.01) 0.52 (0.04) (0

  89. Slide 89: MAIN Balance Sheet Summary

    MAIN Balance Sheet Summary LMM Portfolio Investments Middle Market Portfolio Investments $ 1,206,865 522,083 $ 1,168,150 418,442 $ 1,188,006 410,501 $ 1,228,060 441,292 $ 1,285,521 445,610 Private Loan Investments 692,117 629,094 653,824 743,684 740,371 Other Portfolio Investments External Investmen

  90. Slide 90: MAIN Corporate Data

    MAIN Corporate Data Please visit our website at www.mainstcapital.com for additional information Board of Directors Board of Directors (cont.) Research Coverage Corporate Headquarters Investor Relation Contacts Valerie L. Banner SVP, Governance & Risk Exterran Corporation Stephen B. Solcher Executiv

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