144 0001770310 XXXXXXXX LIVE 0001043604 JUNIPER NETWORKS INC 001-34501 1133 INNOVATION WAY SUNNYVALE CA 94089 4087452000 DelSanto Anne Director Common Ameriprise Financial

2865 Ameriprise Financial Center Minneapolis MN 55474

900 24957.00 321360120 10/02/2023 NYSE Common 05/19/2022 Stock Award Juniper Networks N 900 05/19/2022 Stock Award N Anne DelSanto

15 Taylor Avenue Unit 1516 Plymouth MA 02360

Common 09/01/2023 900 26298.00 Anne DelSanto

15 Taylor Avenue Unit 1516 Plymouth MA 02360

Common 08/01/2023 900 25182.00 Anne DelSanto

15 Taylor Avenue Unit 1516 Plymouth MA 02360

Common 07/03/2023 900 28089.00 Sale made as part of 10B5-1 plan 10/02/2023 11/29/2022 Anne DelSanto by Alexander Meginnes