X0306 4 2020-04-14 0 0001058057 MARVELL TECHNOLOGY GROUP LTD MRVL 0001452385 Hu Jean X. 5488 MARVELL LANE SANTA CLARA CA 95054 0 1 0 0 Chief Financial Officer Common Shares 2020-04-14 4 S 0 15000 25.31 D 74856 D Common Shares 2020-04-15 4 M 0 3105 0.00 A 77961 D Common Shares 2020-04-15 4 F 0 1540 25.15 D 76421 D Common Shares 2020-04-15 4 M 0 3866 0.00 A 80287 D Common Shares 2020-04-15 4 F 0 1917 25.15 D 78370 D Common Shares 2020-04-15 4 M 0 15287 0.00 A 93657 D Common Shares 2020-04-15 4 F 0 7580 25.15 D 86077 D Common Shares 2020-04-15 4 M 0 52941 0.00 A 139018 D Common Shares 2020-04-15 4 F 0 26249 25.15 D 112769 D Common Shares 2020-04-15 4 M 0 44184 0.00 A 156953 D Common Shares 2020-04-15 4 F 0 21907 25.15 D 135046 D Restricted Stock Units 2020-04-15 4 M 0 3105 0.00 D Common Shares 3105 12419 D Restricted Stock Units 2020-04-15 4 M 0 3866 0.00 D Common Shares 3866 30930 D Restricted Stock Units 2020-04-15 4 M 0 15287 0.00 D Common Shares 15287 0 D Restricted Stock Units 2020-04-15 4 M 0 52941 0.00 D Common Shares 52941 0 D Restricted Stock Units 2020-04-15 4 M 0 44184 0.00 D Common Shares 44184 0 D Restricted Stock Units 2020-04-15 4 A 0 47714 0.00 A Common Shares 47714 47714 D The sales reported in this Form 4 consisted of common shares the reporting person previously acquired in the open market. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.31 to $25.32, inclusive. The reporting person undertakes to provide Marvell Technology Group Ltd. ("Marvell"), any security holder of Marvell, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4. Surrender of shares in payment of tax withholding due as a result of the vesting of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one Marvell common share upon vesting. The remaining RSUs vest quarterly on each of 07/15/2020, 10/15/2020, 01/15/2021, and 04/15/2021. The remaining RSUs vest quarterly on each of 07/15/2020, 10/15/2020, 01/15/2021, 04/15/2021, 07/15/2021, 10/15/2021, 01/15/2022 and 04/15/2022. This grant is fully vested. This grant is fully vested. This grant is fully vested. Reflects the number of shares earned in respect of performance based restricted stock units originally granted on April 15, 2017. The achievement levels of the relative TSR performance metrics applicable to the award and the number of shares earned based on such results were certified on April 15, 2020. The RSUs will vest in equal quarterly installments over three years, and were granted as part of the annual grant process. /s/ Jean Hu by Blair Walters as Attorney-in-Fact 2020-04-17