Historical shareholding details of PRIMECAP Management Company holdings in Amentum Holdings Inc. (AMTM)

Monthly changes of PRIMECAP Management Company shareholding in Amentum Holdings Inc. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Jun 30, 2025	Primecap Management Company	12,030,656	4.94%

Mar 31, 2025	Primecap Management Company	10,061,589	4.14%

Dec 31, 2024	Primecap Management Company	6,414,379	2.64%

Sep 30, 2024	Primecap Management Company	5,271,282	2.17%