Historical shareholding details of PRIMECAP Management Company holdings in Waters Corp. (WAT)

Monthly changes of PRIMECAP Management Company shareholding in Waters Corp. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Sep 30, 2025	Primecap Management Company	48,567	0.08%

Jun 30, 2025	Primecap Management Company	49,047	0.08%

Mar 31, 2025	Primecap Management Company	68,901	0.12%

Dec 31, 2024	Primecap Management Company	69,041	0.12%

Sep 30, 2024	Primecap Management Company	98,459	0.17%

Jun 30, 2024	Primecap Management Company	98,859	0.17%

Mar 31, 2024	Primecap Management Company	92,159	0.16%

Dec 31, 2023	Primecap Management Company	92,259	0.16%

Sep 30, 2023	Primecap Management Company	97,659	0.17%

Jun 30, 2023	Primecap Management Company	88,044	0.15%

Mar 31, 2023	Primecap Management Company	77,844	0.13%