2023 Annual Report

Our Business

We are a holding company and through wholly-owned subsidiaries, including Mortgage Guaranty Insurance Corporation, we provide private mortgage insurance, other mortgage credit risk management solutions, and ancillary services.

Financial Summary

	2021		2022			2023
Net income ($ millions)	$	635.0	$	865.3	$	712.9
Diluted income per share ($)	$	1.85	$	2.79	$	2.49
Adjusted net operating income (1) ($ millions)	$	658.6	$	904.8	$	724.4
Adjusted net operating income per diluted share (1) ($)	$	1.91	$	2.91	$	2.53

1. We believe that use of the Non-GAAP measures of adjusted net operating income and adjusted net operating income per diluted share facilitate the evaluation of the company's core financial performance thereby providing relevant information. For a description of how we calculate these measures and for a reconciliation of these measure to their nearest comparable GAAP measures, see "Explanation and Reconciliation of our use of Non-GAAP Financial Measures" in Management's Discussion and Analysis of Financial Condition and Results of Operations.

MGIC Investment Corporation 2023 Annual Report | 1

To Our Shareholders:

I am pleased that we delivered another year of excellent financial results while returning meaningful capital to our shareholders.

We are often asked what differentiates us. First and foremost, it is our people. Our performance is a testament to the dedication and hard work of our team. Additionally, the breadth of customers and the relationships we have cultivated with them for over 65 years remain a key driver of our long-term success. We continue to demonstrate an unwavering commitment to deliver quality offerings and solutions to our customers in order to meet their evolving needs so that together we can help borrowers achieve their dream of affordable and sustainable homeownership sooner. We take pride in knowing what we do everyday matters and has an impact on families and communities.

Below are a few highlights from 2023:

• Earned $713 million of net income ($2.49 per diluted share) for the year and produced an annualized 15.4% retuon equity.
• Wrote $46 billion of new insurance written (NIW). Underwriting standards remain solid and our NIW continues to have strong credit characteristics.
• At the end of the year, insurance in force (IIF) stood at $294 billion and annual persistency increased to approximately 86%, up from approximately 82% year over year.
• Maintained financial strength and capital flexibility while returning approximately $465 million of capital to our shareholders through a combination of common stock repurchases and common stock dividends.
• Increased book value per outstanding share by 18%.
• Expanded our reinsurance program by securing additional quota share and excess of loss reinsurance. These transactions reduce the volatility of losses in adverse economic environments and provide diversification and flexibility to our sources of capital.
• Published our fourth annual Corporate Sustainability Report detailing how we strive to do right by our shareholders, customers, borrowers, community, co-workers, and the environment.

Our company has a rich history, and we are proud of the critical role we play in supporting the housing market. We have navigated through many dynamic economic cycles, uncertainties, and complexities, demonstrating resilience and adaptability. We embrace and build on our past and our ability to continuously adapt and evolve has been instrumental in our long-term success.

In closing, as we celebrate our success and achievements, I want to express my appreciation and gratitude to our shareholders, customers, and business partners for your ongoing trust, confidence, and support in MGIC. Looking ahead, we are keenly focused on the new year and beyond. With our solid foundation, talented and dedicated team, financial strength, and capital flexibility, we are well-positioned to continue to execute our business strategies in 2024 and we look forward to the new opportunities the year will bring.

Respectfully,

Tim Mattke

Chief Executive Officer

MGIC Investment Corporation 2023 Annual Report | 2

From left:

Steve Thompson, Executive Vice President and Chief Risk Officer Nathan Colson, Executive Vice President and Chief Financial Officer Tim Mattke, Chief Executive Officer

Sal Miosi, President and Chief Operating Officer

Paula Maggio, Executive Vice President, General Counsel and Secretary

MGIC Investment Corporation 2023 Annual Report | 3

MGIC Investment Corporation and Subsidiaries

Management's Discussion and Analysis of Financial Condition and Results of Operations

We have reproduced below the "Management's Discussion and Analysis of Financial Condition and Results of Operations," "Risk Factors" and "Financial Statements and Supplementary Data" that appeared in our Annual Report on Form 10-K for the year ended December 31, 2023, filed with the Securities and Exchange Commission on February 21, 2024. Except for certain cross-references, we have not changed what appears below in those sections from what was in our Form 10-K. As a result, those sections are not updated to reflect any events or changes in circumstances that have occurred since our Annual Report on Form 10-K was filed with the SEC.

INTRODUCTION

As used below, "we" and "our" refer to MGIC Investment Corporation's consolidated operations or to MGIC Investment Corporation, as a separate entity, as the context requires. References to "we" and "our" in the context of debt obligations refer to MGIC Investment Corporation. See the "Glossary of terms and acronyms" for definitions and descriptions of terms used throughout this annual report. The Risk Factors discuss trends and uncertainties affecting us and are an integral part of the MD&A.

The following is a discussion and analysis of the financial conditions and results of operations for the years ended December 31, 2023 and 2022, including comparisons between 2023 and 2022. Comparisons between 2022 and 2021 have been omitted from this Annual Report, but can be found in "Item 7 - Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report on Form 10-K for the year ended December 31, 2022 filed with the SEC.

Forward Looking and Other Statements

As discussed under "Forward Looking Statements and Risk Factors" in this Annual Report, actual results may differ materially from the results contemplated by forward looking statements. We are not undertaking any obligation to update any forward looking statements or other statements we may make in the following discussion or elsewhere in this document even though these statements may be affected by events or circumstances occurring after the forward looking statements or other statements were made. Therefore, no reader of this document should rely on these statements being current as of any time other than the time at which this document was filed with the Securities and Exchange Commission.

MGIC Investment Corporation 2023 Annual Report | 4

OVERVIEW

This Overview of the MD&A highlights selected information and may not contain all of the information that is important to readers of this Annual Report. Hence, this Overview is qualified by the information that appears elsewhere in this Annual Report, including the other portions of the MD&A.

Through MGIC, the principal subsidiary of MGIC Investment Corporation, we serve lenders throughout the United States helping families achieve homeownership sooner by making affordable low-down-payment mortgages a reality through the use of private mortgage insurance. At December 31, 2023 MGIC had $293.5 billion of primary IIF.

Summary of financial results of MGIC Investment Corporation

1. See "Explanation and Reconciliation of our use of Non-GAAP Financial Measures."

SUMMARY OF 2023 FINANCIAL RESULTS

Net income for 2023 was $712.9 million (2022: $865.3 million) and diluted income per share was $2.49 (2022: $2.79). The decrease in net income is primarily due to an increase in losses incurred and a decrease in net premiums earned. This was partially offset by an increase in investment income, net of expenses, a decrease in loss on debt extinguishment, and a decrease in our provision for income taxes. Diluted income per share decreased primarily due to a decrease in net income, partially offset by a decrease in the number of diluted weighted average shares outstanding.

Adjusted net operating income for 2023 was $724.4 million (2022: $904.8 million) and adjusted net operating

income per diluted share was $2.53 (2022: $2.91). The decrease in adjusted net operating income in 2023 compared to 2022 is primarily due to a decrease in net income. The decrease in 2023 adjusted net operating income per diluted share compared to 2022 is primarily due to a decrease in adjusted net operating income, partially offset by a decrease in the number of diluted weighted average shares outstanding.

Premiums earned for 2023 were $952.6 million, compared with $1,007.1 million for the same period last year. The decrease in premiums earned compared with the prior year is primarily due to an increase in ceded premiums that was the result of a decrease in the profit commission earned on our QSR Transactions.

Net investment income in 2023 was $214.7 million, compared with $167.5 million in the prior year. The increase in net investment income was due to an increase of 80 basis points in the average investment yield.

Losses incurred, net were $(20.9) million, compared with $(254.6) million for the prior year. While new delinquency notices added $187.7 million to losses incurred in 2023, our re-estimation of loss reserves on previously received delinquency notices resulted in favorable development of $208.5 million. In 2022, new

MGIC Investment Corporation 2023 Annual Report | 5

MGIC Investment Corporation and Subsidiaries

delinquency notices added approximately $149.6 million to losses incurred, offset by re-estimation of loss reserves on previously received delinquency notices resulted in favorable development of $404.1 million. The favorable development for both periods primarily resulted from a decrease in the expected claim rate on previously received delinquencies. Home price appreciation experienced in recent years has allowed some borrowers to cure their delinquencies through the sale of their property.

We did not record a loss on debt extinguishment in 2023. In 2022, we recorded a loss on debt extinguishment of $40.2 million, related to the repurchase of a portion of our 9% Debentures, the redemption of our 5.75% Senior Notes, and the repayment of the outstanding principal balance of our FHLB advance. See Note 7 - "Debt" to our consolidated financial statements for a discussion of the 9% Debenture conversion in 2023.

Our provision for income taxes decreased to $189.3 million in 2023 compared to $224.7 million in 2022 primarily due to a decrease in income before tax. Our effective tax rate for 2023 was 21.0% compared to 20.6% for 2022.

BUSINESS ENVIRONMENT

Economic conditions

Home purchases decreased in 2023, compared to 2022, due to higher interest rates and higher home prices. Higher interest rates also resulted in decreased refinance activity during 2023. This led to a decrease in our NIW, to $46.1 billion in 2023 compared to $76.4 billion in 2022.

The level of interest rates and home prices may change in the future. For information about the possible effects of such changes, see our risk factors titled "If the volume of low down payment home mortgage originations declines, the amount of insurance that we write could decline," "Downturns in the domestic economy or declines in home prices may result in more homeowners defaulting and our losses increasing, with a corresponding decrease in our returns," and "Changes in interest rates, house prices or mortgage insurance cancellation requirements may change the length of time that our policies remain in force."

Mortgage insurance market

The strong credit quality of our insurance portfolio reflects several years of favorable housing fundamentals and in our view, generally favorable risk characteristics on our recently insured loans. Our insurance in force was relatively flat during the year as a result of a lower NIW, offset by increased annual persistency.

The percentage of our NIW with DTI ratios over 45% and LTVs over 95% will fluctuate based on the mortgage conditions that could include the percentage of NIW from purchase transactions, changes in home prices, changes in mortgage rates, and GSE activities. Refer to "Mortgage Insurance Portfolio" for information on our NIW mix during 2023.

Competition

PMI

The private mortgage insurance industry is highly competitive and is expected to remain so. We believe that we currently compete with other private mortgage insurers based on premium rates, underwriting requirements, financial strength (including based on credit or financial strength ratings), customer relationships, name recognition, reputation, strength of management teams and field organizations, the ancillary products and services provided to lenders, and the effective use of technology and innovation in the delivery and servicing of our mortgage insurance products.

Pricing practices

In recent years, the industry has materially reduced its use of standard rate cards, which were fairly consistent among competitors, and correspondingly increased its use of (i) "risk-based pricing systems" that use a spectrum of filed rates to allow for formulaic, risk-based pricing based on multiple attributes that may be quickly adjusted within certain parameters, and (ii) customized rate plans. We monitor various competitive and economic factors while seeking to balance both profitability and market share considerations in developing our pricing strategies.

For information about competition in the private mortgage insurance industry, see our risk factor titled "Competition or changes in our relationships with our customers could reduce our revenues, reduce our premium yields and/or increase our losses" in Risk Factors.

MGIC Investment Corporation 2023 Annual Report | 6

MGIC Investment Corporation and Subsidiaries

GSE Risk Share Transactions

In 2018, the GSEs initiated secondary mortgage market programs with loan level mortgage default coverage provided by various (re)insurers that are not mortgage insurers governed by PMIERs, and that are not selected by the lenders. These programs, which currently account for a small percentage of the low down payment market, compete with traditional private mortgage insurance and, due to differences in policy terms, they may offer premium rates that are below prevalent single premium lender-paid mortgage insurance ("LPMI") rates. We participate in these programs from time to time.

The GSEs (and other investors) have also used other forms of credit enhancement that did not involve traditional private mortgage insurance, such as engaging in credit-linked note transactions executed in the capital markets, or using other forms of debt issuances or securitizations that transfer credit risk directly to other investors, including competitors and an affiliate of MGIC; using other risk mitigation techniques in conjunction with reduced levels of private mortgage insurance coverage; or accepting credit risk without credit enhancement.

Government programs

PMI also competes against government mortgage insurance programs such as the FHA, VA, and USDA, primarily for lower FICO score business. The combined market share of primary mortgage insurance written by government programs continues to exceed that written by PMI in both 2023 and 2022.

Refer to "Mortgage Insurance Portfolio" for additional discussion on market share and our operating measures including NIW, IIF and RIF.

PMIERs

We operate under the requirements of the PMIERs of the GSEs in order to insure loans delivered to or purchased by them. The PMIERs include financial requirements as well as business, quality control and certain transactional approval requirements. The financial requirements of the PMIERs require a mortgage insurer's "Available Assets" (generally only the most liquid assets of an insurer) to equal or exceed its "Minimum Required Assets" (which are based on an insurer's book of risk in force, calculated from tables of factors with several risk dimensions, reduced for credit given for risk ceded under reinsurance transactions, and subject to a floor amount). Based on our application of PMIERs, MGIC's Available Assets under PMIERs totaled $5.8 billion, an excess of $2.4 billion over its Minimum Required Assets at December 31, 2023.

BUSINESS OUTLOOK FOR 2024

Our outlook for 2024 should be viewed against the backdrop of the business environment discussed above.

NIW

Our NIW is affected by total mortgage originations, the percentage of total mortgage originations using private mortgage insurance (the "PMI penetration rate"), and our market share within the PMI industry. As of January 2024, the total average mortgage origination forecasts from Fannie Mae and the MBA indicate mortgage originations of $2.0 trillion in 2024, compared to an estimated $1.6 trillion in 2023. Both purchase originations and refinance transactions are forecasted to increase in 2024 when compared to 2023. We are expecting NIW to increase slightly in 2024 compared to 2023.

The widespread use of risk based pricing systems by the PMI industry makes it more difficult to compare our rates to those offered by our competitors. We may not be aware of industry rate changes until we observe that our volume of NIW has changed. In addition, business under customized rate plans is awarded by certain customers for only limited periods of time. As a result, our NIW may fluctuate more than it had in the past.

IIF

Our IIF decreased 0.6% in 2023 and is expected to remain relatively flat in 2024. Our book of IIF is an important driver of our future revenues, and its growth is driven by our ability to generate NIW and the retention of our IIF, as measured by our annual persistency. Interest rates influence both our NIW and persistency. Generally speaking, in a rising rate environment, total mortgage originations may decline; however, we would also expect policy cancellation rates to decline, and in tuincrease annual persistency, although the impact generally lags the change in interest rates. In 2024, we expect interest rates to remain elevated compared to recent years and the rate of growth in home prices to continue to moderate.

MGIC Investment Corporation 2023 Annual Report | 7

MGIC Investment Corporation and Subsidiaries

Results of operations

Premiums

Our direct premiums written and earned are impacted by our IIF during the period and our in force premium yield, both of which are expected to be relatively flat in 2024 when compared to 2023. Premiums earned are also impacted by the amount of accelerated premiums from single premium policy cancellations, which generally decrease as refinance activity decreases. Our unearned premium decreased to $157.8 million at December 31, 2023 from $195.3 million at December 31, 2022.

Our net premiums written and earned are primarily impacted by the changes in the direct premiums written and earned noted above and by the amount of premiums we cede under our quota share and excess of loss reinsurance transactions. The amount of premiums we cede in 2024 will be affected by any changes in our reinsurance coverage. Premiums we cede under our quota share transactions are also impacted by the profit commission we receive. The amount of profit commission is variable year-to-year and is dependent on the amount of losses incurred ceded. In 2023, compared to 2022, the increase in ceded losses incurred decreased the profit commission we received, resulting in higher ceded premiums. Increases in ceded losses incurred will benefit our losses incurred line, but will result in lower profit commission and higher ceded premiums.

Factors that affect the amount of premiums we eafrom our IIF are further discussed in our "Consolidated Results of Operations - Premium yield."

Investment income

Net investment income is a material contributor to our results of operations. We expect net investment income in 2024 to increase in comparison to 2023, primarily due to higher average investment yields. The amount of investment income will be impacted by the change in the yield we can eaon investments and the level of invested assets. The level of invested assets will primarily be impacted by the amount of cash we expect to use in financing activities relative to our cash from operations. The magnitude of any change in our invested asset level will be subject to the timing of our financing activities.

Losses

Losses incurred, net is impacted by the level of new delinquency notices. Generally, on our primary business, the highest claim frequency years have been the third and fourth year after loan origination. As of December 31, 2023, 67% of our primary RIF was written subsequent to December 31, 2020, 84% of our primary RIF was written subsequent to December 31, 2019, and 89% of our primary RIF was written subsequent to December 31, 2018. The patteof claim frequency can be affected by many factors, including annual persistency and deteriorating economic conditions.

Our claims paid activity slowed at the start of the COVID-19 pandemic primarily due to forbearance and foreclosure moratoriums put in place, and it has not yet appreciably increased from those suppressed levels. Home price appreciation experienced in recent years has allowed some borrowers to cure their delinquencies through the sale of their property. In addition, an increase in third party property sales prior to claim settlement, has resulted in a decrease in the average claim paid on the claims we do receive. We expect net losses and LAE paid to increase; however, the magnitude and timing of the increases are uncertain.

Underwriting and operating expenses, net

We expect underwriting and operating expenses, net to be modestly lower in 2024 compared to 2023.

Income taxes

We expect our 2024 effective tax rate to be approximately 21%.

CAPITAL

MGIC dividend payments to our holding company

The ability of MGIC to pay dividends is restricted by insurance regulation. Amounts in excess of prescribed limits are deemed "extraordinary" and may not be paid if disapproved by the OCI. A dividend is extraordinary when the proposed dividend amount, plus dividends paid in the twelve months preceding the dividend payment date exceed the ordinary dividend level. In 2024, MGIC can pay $64 million of ordinary dividends without OCI approval, before taking into consideration dividends paid in the preceding twelve months. In 2023 and 2022, MGIC paid a cash and/or investment security dividend of $600 million and $800 million, respectively, to our holding company. Future dividend payments from MGIC to the holding company will continue to be determined in consultation with the board.

MGIC Investment Corporation 2023 Annual Report | 8

MGIC Investment Corporation and Subsidiaries

Dividends to shareholders

In the first and second quarters of 2023, we paid quarterly cash dividends of $0.10 per share to shareholders which totaled $58.8 million. In the third and fourth quarters of 2023, we paid quarterly cash dividends of $0.115 per share which totaled $65.3 million. On January 23, 2024, the Board of Directors declared a quarterly cash dividend to holders of the company's common stock of $0.115 per share payable on March 5, 2024, to shareholders of record at the close of business on February 15, 2024. We expect to continue to make dividend payments to shareholders in 2024.

Share repurchase programs

Repurchases may be made from time to time on the open market (including through 10b5-1 plans) or through privately negotiated transactions. The repurchase programs may be suspended for periods or discontinued at any time. We repurchased approximately 21.7 million shares in 2023 using approximately $340.6 million of holding company resources. In 2022, we repurchased approximately 27.8 million shares of our common stock using approximately $385.7 million of holding company resources. In 2024, we expect share repurchase programs will remain our primary means of returning capital to shareholders.

The following table shows details of our share repurchase programs.

As of December 31, 2023, we had approximately 272.5 million shares of common stock outstanding which was a decrease of 7.2% from December 31, 2022.

GSEs

We must comply with a GSE's PMIERs to be eligible to insure loans delivered to or purchased by that GSE. The PMIERs include financial requirements, as well as business, quality control and certain transaction approval requirements. The PMIERs provide that the GSEs may amend any provision of the PMIERs or impose additional requirements with an effective date specified by the GSEs. If MGIC ceases to be eligible to insure loans purchased by one or both of the GSEs, it would significantly reduce the volume of our NIW, the substantial majority of which is for loans delivered to or purchased by the GSEs.

The financial requirements of the PMIERs require a mortgage insurer's "Available Assets" (generally only the most liquid assets of an insurer) to equal or exceed its "Minimum Required Assets" (which are based on an insurer's book of risk in force and are calculated from tables of factors with several risk dimensions, reduced for credit given for risk ceded under reinsurance transactions, and subject to a floor amount). Based on our interpretation of the PMIERs as of December 31, 2023, MGIC's Available Assets totaled $5.8 billion, or $2.4 billion in excess of its Minimum Required Assets.

The PMIERs generally require us to hold significantly more Minimum Required Assets for delinquent loans than for performing loans and the Minimum Required Assets required to be held increases as the number of payments missed on a delinquent loan increases.

Our reinsurance transactions enable us to eahigher returns on our Minimum Required Assets than we would without them because they generally reduce the Minimum Required Assets we must hold under PMIERs. However, reinsurance may not always be available to us, or available only on terms, or costs, that we find unacceptable.

The calculated credit for XOL Transactions under PMIERs is generally based on the PMIERs requirement of the covered loans and the attachment and detachment point of the coverage. PMIERs credit is generally not given for the reinsured risk above the PMIERs requirement. Our existing reinsurance transactions are subject to periodic review by the GSEs and there is a risk we will not receive our current level of credit in future periods for the risk ceded under them. In addition, we may not receive the same level of credit under future transactions that we receive under existing transactions. If MGIC is not allowed certain levels of credit under the PMIERs, under certain circumstances, MGIC may terminate the reinsurance transactions without penalties.

MGIC Investment Corporation 2023 Annual Report | 9