Marvell Technology Investor Presentation — December 2019

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Marvell Technology Group Ltd

Third Quarter of Fiscal Year 2020

December 3, 2019Discussion of Non-GAAP Financial Measures

Non- GAAP financial measures exclude the effect of share- based compensation expense, amortization of the inventory fair value adj ustment associated with the Aquantia acquisition, amortization of acquired

intangible assets, acquisition and divestiture- related costs, restructuring and other related charges, resolution of legal matters, and certain expenses and benefits that are driven primarily by discrete events

that management does not consider to be directly related to Marvell’s core business.

Marvell uses a non- GAAP tax rate to compute the non- GAAP tax provision. This non- GAAP tax rate is based on Marvell's estimated annual GAAP income tax forecast, adjusted to account for items excluded

from GAAP income in calculating Marvell's non- GAAP income, as well as the effects of significant non- recurring and period specif ic tax items which vary in size and frequency. Marvell's non- GAAP tax rate is

determined on an annual basis and may be adjusted during the year to take into account events that may materially affect the non-GAAP tax rate such as tax law changes; significant changes in Marvell's

geographic mix of revenue and expenses; or changes to Marvell's corporate structure. For the third quarter of fiscal 2020, a non- GAAP tax rate of 4.5% has been applied to the non- GAAP financial results.

Marvell believes that the presentation of non- GAAP financial measures provide important supplemental information to management and investors regarding financial and business trends relating to Marvell’s

financial condition and results of operations. While Marvell uses non- GAAP financial measures as a tool to enhance its understanding of certain aspects of its financial performance, Marvell does not consider