144 0001489550 XXXXXXXX LIVE 0001633978 LUMENTUM HOLDINGS INC. 001-36861 1001 Ridder Park Drive San Jose CA 95131 (408) 546-5483 WUPEN YUEN Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004 500 473280.00 89700000 09/23/2026 NASDAQ Common 08/21/2025 Restricted Stock ISSUER N 500 08/21/2025 Not Applicable N WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/22/2026 500 467775.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/21/2026 500 479635.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/18/2026 500 460000.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/17/2026 500 466725.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/16/2026 500 428415.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/15/2026 500 420755.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/14/2026 500 431070.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/11/2026 500 472205.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/10/2026 500 480720.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/09/2026 500 489270.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/08/2026 500 447995.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/04/2026 500 430000.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/03/2026 500 435005.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/02/2026 500 432245.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 09/01/2026 500 450520.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 08/31/2026 500 447500.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 08/28/2026 500 470475.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 08/27/2026 500 479330.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 08/26/2026 500 441075.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 08/25/2026 500 428322.50 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 08/24/2026 500 412120.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 08/21/2026 500 449075.00 WUPEN YUEN 1001 Ridder Park Drive San Jose CA 95131 Common 08/20/2026 1500 1241730.00 09/23/2026 05/19/2026 /s/ Wupen Yuen