M a r ve l l S e m i c o n d u c t o r 4 01(k ) R e t i r e m e n t P l a n

Table of Contents

How to Enroll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Choose Your Investment Strategy . . . . . . . . . . . . . . . . . . . . . . . . 2

Plan Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Managing Your Account . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Dear Valued Employee:

Have you ever thought...

“I’ll start thinking about retirement when I have more time.”

“I’m too young to think about retirement!”

“I hate looking at financial statements—and I don’t know the first thing about investing.”

“I’ll worry about retirement some other time.”

“My expenses are too high today; how can I possibly save for the future?”

“I’m too close to retirement—I can’t possibly start saving!”

The fact is, our lives go by fast, and before you know it, you’ll be facing retirement. Whether you feel you’re too busy to begin planning for the future, think you’re unable to save even a small amount due to other financial obligations, or feel that you have plenty of years ahead to build your retirement savings, the reality is that you need to begin planning and saving now.

Marvell Semiconductor, Inc. cares about your success—and wants to help you build a better future with the right tools. Together with our service provider, Schwab Retirement Plan Services, Inc., we offer you the Marvell Semiconductor 401(k) Retirement Plan (the “Plan”). This guide will help you get started, and it all begins with the enrollment process. For those of you already enrolled, use this guide to become reacquainted with the Plan’s tools and features that may help you keep your retirement planning on track.

If you have questions about the Plan’s features or how to enroll, connect with a Participant Services Representative at 1-800-724-7526, from 7:00 a.m. to 11:00 p.m. ET, Monday through Friday.

Take charge of your retirement savings goals by putting your Plan to work for you today.

Yours Truly, Marvell Benefits Department

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Follow these steps to start saving in the Plan.

Step 1: Register and enroll

Use any one of the three convenient options below to register and enroll:• Online—Log in to workplace.schwab.com.

• Mobile app—Download the Schwab Workplace Retirement app* at workplace.schwab.com/mobile.

To enroll online or via the mobile app, use the Register Now link to establish your login ID and password. Once you have successfully created your login credentials, follow the prompts to enroll.

• Phone—Call Participant Services at 1-800-724-7526.

Step 2: Decide how much to contribute

Your decision should be based on factors such as your age, your compensation, and the amount of income you may need when you retire. The U.S. Department of Labor suggests that you may need at least 70% of your preretirement income to maintain your same standard of living once you stop working.†

To help you determine what you may need to save annually to be able to fund your expected retirement spending goals, access the Retirement Savings Calculator at workplace.schwab.com. Go to Learning Center > Tools and Calculators.

Step 3: Select your investments

Choose the investment strategy that suits your approach to investing. For information on selecting your investments, review the “Choose Your Investment Strategy” section beginning on page 2.

Step 4: Designate your beneficiary

Your beneficiary designation lets Schwab Retirement Plan Services, Inc. and Marvell Semiconductor, Inc. know who should receive the balance of your account in the event of your death. That’s why it’s so important to designate a beneficiary(ies) and keep your election current. To enter your beneficiary designation, log in your account at workplace.schwab.com and go to My Profile > Beneficiaries.

*Requires a wireless signal or mobile connection. System availability and response times are subject to market conditions and mobile connection limitations.

†Source: U.S. Department of Labor. “Top 10 Ways to Prepare for Retirement.” September 2015.

How to Enroll

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Choose Your Investment Strategy

Whether you prefer to receive a savings and investment recommendation, select a target date fund, or choose your own investments, it’s important to have an investment strategy that is right for you. Use the information in this section to help determine which strategy best suits your preferred approach to selecting and managing the investments in your account.

If you’d like some help selecting and managing your investments:

Get a savings and investment recommendation

If you’re not sure how much to save and which funds to select, get a savings and investment recommendation from the Plan’s advice service.

Utilize the Plan’s point-in-time advice service provided by GuidedChoice®, 1 a third-party advisory service, to get a savings and investment recommendation that can help you work toward your goals; the service also provides annual portfolio rebalancing, based on your last interaction, to help you stay on the course you’ve set.

• Schedule an advice consultation at workplace.schwab.com or by calling Participant Services at 1-800-724-7526.

• If you prefer a self-service approach, access the GuidedChoice advice tool online at workplace.schwab.com. Go to Advice > Retirement Plan Advice to get started on your own.

Invest in a target date fund

If you lack the time or desire to actively manage and monitor your investments, a Schwab Managed Retirement Trust Fund2,3 might be right for you.

The Schwab Managed Retirement Trust Funds™ are managed by investment professionals and are adjusted to become more conservative as you near retirement.

• Choose the fund with the target maturity date that most closely matches your expected retirement date, as well as other factors important to your planning objectives, and leave the rest to the professionals.

The values of the target fund will fluctuate up to and after the target date. There is no guarantee the funds will provide adequate income at or through retirement.

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If you prefer to select and manage your investments on your own:

Design your own portfolio from the Plan’s core fund lineup

If you are a knowledgeable investor, you may prefer to design your own investment portfolio from the Plan’s core fund lineup.

Your Plan’s core funds are listed on page 6 of this guide. These funds have been selected to provide you with a diverse range of investment choices to accommodate your retirement savings goals and time horizon. To learn more about the funds offered in the Plan, including fund profiles, log in to workplace.schwab.com. Go to Learning Center and click on the Fund Information link. Click on a fund name to view the fund’s fact sheet.

• Select the funds in which you’d like to invest from the Plan’s investment lineup and determine the percentage to allocate to each fund.

Access a wider array of investment options with a self-directed brokerage account

If you are an experienced investor with the time and interest to conduct your own research, the Schwab Personal Choice Retirement Account® (PCRA)4 may be your preferred option.

A PCRA is a brokerage account you manage yourself that provides access to more investment choices than are otherwise available in the Plan.

• You can open your PCRA after enrolling in the Plan. Complete the PCRA Application at workplace.schwab.com. Go to Manage Account > PCRA and select the link under Apply Now.

Whichever investment strategy you select, be sure to review your investment allocation at least annually, and whenever you experience a life event, to ensure that your strategy will continue to help you work toward your retirement savings goals.

Plan Highlights

Questions? Review the following pages to get answers to your retirement plan questions.

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Eligibility

401(k) Plan You are immediately eligible to begin saving in your Plan. You must complete the enrollment process within 30 days after you become eligible (date of hire or rehire). If you have not completed the enrollment process, or opted out of participating within that time, you will be automatically enrolled in the Plan at a pre-tax savings rate of 6%. Unless you elect otherwise, your contributions will be invested in the Schwab Managed Retirement Trust Fund2,3 aligned with the year you will reach age 65, as determined by the Plan.

Your Plan has automatic savings increases to help you set aside extra money—automatically. Your savings rate will increase 1% each year on April 1 until you reach 10%, unless you opt out of this feature.

If you would like to change your savings rate or investments, call Participant Services at 1-800-724-7526.

Your Contributions

Pre-Tax Contributions

Pre-tax 401(k) contributions are made to your account before taxes are deducted from your eligible pay. This reduces your current taxable income. You pay taxes on your contributions and any applicable earnings at the time of distribution.

Roth 401(k) Contributions

Your Plan allows you to make Roth 401(k) contributions. Roth 401(k) contributions are deducted from your pay after taxes. You will not pay taxes on any earnings when they are withdrawn—provided that the distribution occurs at least five years following the year you make your first Roth 401(k) contribution and you have reached age 59½, are deceased, or have become disabled.

Catch-Up Contributions

If you will be age 50 or older by year-end, you may be able to make additional pre-tax and/or Roth 401(k) catch-up contributions to your account.

Contribution Limits You may contribute up to 50% of your eligible pay in combined pre-tax and/or Roth 401(k) contributions each pay period.

Federal law limits the amount you can contribute in combined pre-tax and/or Roth 401(k) contributions and in catch-up contributions in a given year. The limit is set annually and can be found at workplace.schwab.com. Go to Manage Account > Contributions.

Changes You can change the amount you contribute to your account at any time. Visit workplace.schwab.com or call Participant Services at 1-800-724-7526 to make changes.

Rollovers You may roll over contributions from a previous employer’s qualified retirement plan or from an IRA into your account. Consolidating your retirement savings may make it more convenient to manage your investments. Plus, your savings may continue to grow tax-deferred.

Company Contributions

401(k) Match The Marvell Semiconductor, Inc. match is discretionary; refer to the company benefits website or the Summary Plan Description for details.

The employer contribution is paid on a pre-tax basis and may be taxable at withdrawal.

Vesting

Your Contributions Vesting is your ownership of your account. You are always 100% vested in your own contributions and any earnings, including any rollovers you make to your account.

Company Contributions

Company contributions to your account are also immediately 100% vested.

Marvell Semiconductor 401(k) Retirement Plan Highlights

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Choosing Your Funds

You direct the investments of your account and may choose from the core funds listed below. To learn more about the funds offered in the Plan, including fund profiles, log in to workplace.schwab.com. Go to Learning Center and click on the Fund Information link. Click on a fund name to view the fund’s fact sheet.

Fund Name Ticker Asset Category

Morley Stable Value Cl 20-II‡ N/A Stable ValueMetropolitan West Total Return Bond Plan MWTSX Intermediate-Term BondPutnam Equity Income Y PEIYX Large ValueVanguard Institutional Index I VINIX Large BlendAmerican Funds Growth Fund of Amer R6 RGAGX Large GrowthMFS Mid Cap Value R5 MVCKX Mid-Cap ValueVanguard Mid Cap Index I VMCIX Mid-Cap BlendDreyfus/The Boston Co Sm/Md Cp Gr Y DBMYX Mid-Cap GrowthNorthern Small Cap Value NOSGX Small ValueVanguard Small Cap Index I VSCIX Small BlendWells Fargo Small Company Growth Inst WSCGX Small GrowthThornburg International Value R6 TGIRX Foreign Large GrowthMFS Global Equity R5 MWEMX World StockSchwab Mngd Ret Trust 2010 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2015 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2020 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2025 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2030 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2035 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2040 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2045 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2050 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2055 Cl IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust 2060 CL IV2,3 N/A Target Retirement FundSchwab Mngd Ret Trust Income Cl IV2,3 N/A Target Retirement Fund

‡This investment option is a collective trust fund and is not a registered investment company product.

A note about risk: Marvell Semiconductor, Inc. has made available different investments in the hope of meeting the various savings and investment goals for all participants. As you make your investment choices, keep in mind that there is risk involved. The funds differ in growth potential and risk. Pursuant to Department of Labor Regulation 2550.404c-1(b)(2)(i)(B)(1)(i), this Retirement Plan is intended to qualify as an ERISA 404(c) Plan that relieves plan fiduciaries of liability for any investment losses that result from investment directions made by plan participants.

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Changing Your Investments

You may transfer existing assets among investment choices at any time, subject to prospectus requirements.

Withdrawals

Your Plan is designed to help you save for retirement; therefore, the Internal Revenue Service places restrictions on when money may be withdrawn from your account. Although you may access your retirement savings while employed by Marvell Semiconductor, Inc., there may be tax consequences. The following withdrawals are allowed under certain circumstances.

Retirement You can withdraw money from your account when you reach the early retirement age of 59½ or the normal retirement age of 65.

In-Service In-service withdrawals are allowed after age 59½ from pre-tax and Roth 401(k) contribution sources. In-service withdrawals are allowed from all contribution sources at age 70½. You may withdraw from rollover assets at any time.

Loans You may borrow money from your account. The loan amount is based on the vested value of your account.

You may borrow up to the lesser of 50% of the vested account balance or $50,000, reduced by your highest outstanding loan balance over the previous 12 months, if any. The minimum loan amount is $1,000.

General loans must be repaid within five years. Residential loans must be repaid within 10 years.

Loan repayments are deducted from your paycheck per standard biweekly payroll cycles. The interest rate on your loan will be the prime rate at the time the loan is initiated plus 1%.

Each loan will be charged a one-time set-up fee of $75. All of your principal and interest loan payments are credited to your account and are invested in the same manner as your regular contributions. You can contact Participant Services at 1-800-724-7526 for more information and to apply for a loan.

After your loan request is received and approved, a check for the requested loan amount will be mailed to you in approximately four business days.

A maximum of two outstanding loans are allowed at a time.

Hardship Withdrawal

You may be eligible to withdraw a portion of your account balance if you experience a hardship. According to the federal government, you may qualify for a hardship withdrawal if you need to:

• Prevent eviction from or foreclosure of your primary residence;• Repair damage to your primary residence;• Purchase a primary residence;• Pay for postsecondary education for you or an immediate family member;• Pay for uninsured medical expenses; or• Cover funeral expenses.

Hardship withdrawals are subject to ordinary income tax and may be subject to a 10% federal penalty. Residents of certain states may also be subject to state penalties.

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Withdrawals (Continued)

Termination You may receive all of your vested contributions and any earnings upon termination of your employment.

If your vested account balance is less than $1,000 it will be paid to you. This is called a single-sum cash distribution.

If your vested account balance is between $1,000 and $5,000, Schwab Retirement Plan Services, Inc. will contact you and provide you with information on the options available to you. If you do not respond to Schwab Retirement Plan Services, Inc., the balance will be rolled over to a Charles Schwab Bank IRA, and the funds will be deposited to an FDIC-insured money market deposit account.

If your vested account balance, including rollovers, is greater than $5,000, your balance will remain in the Plan until you request a distribution.

Rollover funds in the Charles Schwab Bank IRA are invested in an FDIC-insured money market deposit account at Charles Schwab Bank. Funds are insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 when aggregated with all other deposits held by the IRA owner in individual retirement accounts or self-directed employee benefit accounts at Schwab Bank. Any account balances in Roth 401(k) sources will be rolled over into a Roth IRA, and the five-year qualification period will start over. Trust, custody, and deposit products and services are available through Charles Schwab Bank.

Disability If you become permanently disabled, you are allowed to withdraw your vested account balance.

Death In the event of your death, your account balance will be paid to your beneficiaries.

Need More Information?

Visit workplace.schwab.com or call Participant Services at 1-800-724-7526.

Disclaimer The above highlights section is only a brief overview of your Plan’s features and does not constitute a legally binding document. A more detailed Summary Plan Description is available from your Human Resources Department. Please review it carefully for additional information about the specific provisions of your Plan.

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Managing Your AccountUse any of these convenient options to access and manage your account .

WebYou can manage your account and access a variety of retirement planning tools and calculators at workplace.schwab.com .Access to electronic services may be limited or unavailable during periods of peak demand, market volatility, systems upgrades, maintenance, or for other reasons.

Mobile appThe Schwab Workplace Retirement app gives you on-the-go access to your account . You can review your account balance, monitor your personal performance, make contribution elections, read the latest market news, and securely access the Plan’s full website . Download the app at workplace.schwab.com/mobile .Requires a wireless signal or mobile connection. System availability and response times are subject to market conditions and mobile connection limitations.

Participant ServicesYou can manage your account 24 hours a day by phone at 1-800-724-7526 . If you need to speak with someone, Participant Services Representatives are available from 7:00 a .m . to 11:00 p .m . ET, Monday through Friday .

1 Retirement plan investment advice is formulated and provided by GuidedChoice Asset Management, Inc.® (“GuidedChoice”), which is not affiliated with or an agent of Charles Schwab & Co., Inc. (CS&Co.), a federally registered investment advisor; Schwab Retirement Plan Services, Inc. (SRPS); or any of their affiliates. The GuidedChoice service is available to participants enrolled in plans that use the recordkeeping and related services of SRPS. Participant access to the GuidedChoice service is facilitated through CS&Co. Neither CS&Co., SRPS, nor their affiliates supervise, make recommendations with respect to, or take responsibility for monitoring the advice provided to participants by GuidedChoice. Advice Consultants are not employees of GuidedChoice and act solely as facilitators to participants accessing the GuidedChoice service. GuidedChoice advice is limited to the fund investment options available under your Plan as selected by your Plan Sponsor or other fiduciary. GuidedChoice services include automatic rebalancing of participant accounts to maintain the asset allocations as recommended by GuidedChoice. Accounts will be rebalanced annually unless you opt out of this service.

2 The Schwab Managed Retirement Trust Funds™ and Schwab Institutional Trust Funds® are collective trust funds maintained by Charles Schwab Bank (“Schwab Bank”), as trustee of the Funds. They are available for investment only by eligible retirement plans and entities. Schwab Bank Collective Trust Funds (“Funds”) are not insured by FDIC or any other type of deposit insurance; are not deposits or other obligations of, and are not guaranteed by, Schwab Bank or any of its affiliates; and involve investment risks, including possible loss of principal invested. The Funds are not mutual funds and are exempt from registration and regulation under the Investment Company Act of 1940 (“1940 Act”), and their units are not registered under the Securities Act of 1933, or applicable securities laws of any state or other jurisdiction. Unit holders of the Funds are not entitled to the protections of the 1940 Act. The decision to invest in the Funds should be carefully considered. The Funds’ unit values will fluctuate and may be worth more or less when redeemed, so unit holders may lose money. The Funds are not sold by prospectus and are not available for investment by the public; Fund prices are not quoted in newspapers.

3 Diversification and asset allocation strategies do not ensure a profit and cannot protect against losses in a declining market. The Funds are subject to market volatility and risks associated with the underlying investments. Risks include exposure to international and emerging markets, small company and sector equity securities, and fixed income securities subject to changes in inflation, interest rates, market valuations, liquidity, prepayments, and early redemption. The funds are built for investors who expect to start gradual withdrawals of fund assets on the target date, to begin covering expenses in retirement. The principal value of the funds is not guaranteed at any time, and will continue to fluctuate up to and after the target date.

4 Schwab Personal Choice Retirement Account® (PCRA) is offered through Charles Schwab & Co., Inc. (Member SIPC), a registered broker-dealer, as part of the Plan, with Plan recordkeeping services provided by Schwab Retirement Plan Services, Inc.

Schwab Retirement Plan Services, Inc. provides recordkeeping and related services with respect to retirement plans and has provided this communication to you as part of the recordkeeping services it provides to the Plan. Trust, custody and deposit products and services are available through Charles Schwab Bank. This information is not intended to be a substitute for specific individualized tax, legal, or investment planning advice. Where specific advice is necessary or appropriate, you should consult with a qualified tax advisor, CPA, financial planner, or investment manager.

CC0891546 (0916-2944) GDE27583MRV-08 (12/16) 00188118

Schwab Retirement Plan Services, Inc. 4150 Kinross Lakes Pkwy Richfield, OH 44286