144 0001548472 XXXXXXXX LIVE 0000797721 VIASAT, INC. 000-21767 6155 El Camino Real Carlsbad CA 92009 760-476-2200 SHAWN DUFFY Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

50000 1643950.00 134262856 09/15/2025 NASDAQ Common 11/26/2018 Restricted stock vesting under a registered plan Issuer N 3057 11/26/2018 Services Rendered Common 12/19/2019 Restricted stock vesting under a registered plan Issuer N 1479 12/19/2019 Services Rendered Common 11/23/2021 Restricted stock vesting under a registered plan Issuer N 1418 11/23/2021 Services Rendered Common 11/10/2012 Restricted stock vesting under a registered plan Issuer N 625 11/10/2012 Services Rendered Common 11/10/2013 Restricted stock vesting under a registered plan Issuer N 625 11/10/2013 Services Rendered Common 01/02/2019 Restricted stock vesting under a registered plan Issuer N 112 01/02/2019 Services Rendered Common 11/22/2017 Exercise of options under a registered plan Issuer N 1430 11/22/2017 Services Rendered Common 11/19/2020 Restricted stock vesting under a registered plan Issuer N 1479 11/19/2020 Services Rendered Common 12/31/2020 Restricted stock vesting under a registered plan Issuer N 223 12/31/2020 Services Rendered Common 07/03/2017 Restricted stock vesting under a registered plan Issuer N 90 07/03/2017 Services Rendered Common 07/02/2018 Restricted stock vesting under a registered plan Issuer N 93 07/02/2018 Services Rendered Common 12/17/2021 Restricted stock vesting under a registered plan Issuer N 2901 12/17/2021 Services Rendered Common 11/19/2024 Restricted stock vesting under a registered plan Issuer N 1479 11/19/2024 Services Rendered Common 11/17/2021 Restricted stock vesting under a registered plan Issuer N 1183 11/17/2021 Services Rendered Common 12/21/2015 Restricted stock vesting under a registered plan Issuer N 1170 12/21/2015 Services Rendered Common 11/14/2016 Restricted stock vesting under a registered plan Issuer N 1846 11/14/2016 Services Rendered Common 06/05/2018 Restricted stock vesting under a registered plan Issuer N 4143 06/05/2018 Services Rendered Common 07/01/2019 Restricted stock vesting under a registered plan Issuer N 112 07/01/2019 Services Rendered Common 01/06/2017 Exercise of options under a registered plan Issuer N 87 01/06/2017 Services Rendered Common 12/19/2018 Restricted stock vesting under a registered plan Issuer N 1183 12/19/2018 Services Rendered Common 11/20/2014 Restricted stock vesting under a registered plan Issuer N 937 11/20/2014 Services Rendered Common 11/12/2015 Restricted stock vesting under a registered plan Issuer N 2470 11/12/2015 Services Rendered Common 11/17/2020 Restricted stock vesting under a registered plan Issuer N 1183 11/17/2020 Services Rendered Common 12/17/2020 Restricted stock vesting under a registered plan Issuer N 2060 12/17/2020 Services Rendered Common 06/30/2021 Restricted stock vesting under a registered plan Issuer N 167 06/30/2021 Services Rendered Common 01/04/2016 Restricted stock vesting under a registered plan Issuer N 87 01/04/2016 Services Rendered Common 12/19/2017 Restricted stock vesting under a registered plan Issuer N 1339 12/19/2017 Services Rendered Common 01/02/2018 Restricted stock vesting under a registered plan Issuer N 93 01/02/2018 Services Rendered Common 11/17/2019 Restricted stock vesting under a registered plan Issuer N 1183 11/17/2019 Services Rendered Common 12/20/2016 Restricted stock vesting under a registered plan Issuer N 1430 12/20/2016 Services Rendered Common 11/13/2017 Restricted stock vesting under a registered plan Issuer N 910 11/13/2017 Services Rendered Common 06/30/2020 Restricted stock vesting under a registered plan Issuer N 176 06/30/2020 Services Rendered Common 12/10/2014 Restricted stock vesting under a registered plan Issuer N 911 12/10/2014 Services Rendered Common 12/31/2019 Restricted stock vesting under a registered plan Issuer N 205 12/31/2019 Services Rendered Common 12/31/2019 Restricted stock vesting under a registered plan Issuer N 92 12/31/2019 Services Rendered Common 11/19/2022 Restricted stock vesting under a registered plan Issuer N 1479 11/19/2022 Services Rendered Common 11/15/2022 Restricted stock vesting under a registered plan Issuer N 1863 11/15/2022 Services Rendered Common 11/21/2016 Restricted stock vesting under a registered plan Issuer N 1170 11/21/2016 Services Rendered Common 11/22/2017 Restricted stock vesting under a registered plan Issuer N 1170 11/22/2017 Services Rendered Common 07/05/2016 Restricted stock vesting under a registered plan Issuer N 2111 07/05/2016 Services Rendered Y Shares under the lot date 7/5/2016 reflect lots 11/17/2020 & 11/10/2013 are Restricted Stock Vesting under a Registered Plan. The shares being represented in this section could not be reflected in Table 1. 09/15/2025 /s/ Shawn Lynn Duffy