Historical shareholding details of Wellington Management Company LLP holdings in MBX Biosciences Inc. (MBX)

Monthly changes of Wellington Management Company LLP shareholding in MBX Biosciences Inc. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Mar 31, 2025	Wellington Management Company Llp	278,253	0.83%

Feb 28, 2025	Wellington Management Company Llp	278,253	0.83%

Jan 31, 2025	Wellington Management Company Llp	287,179	0.86%

Dec 31, 2024	Wellington Management Company Llp	2,909,639	8.71%
Dec 31, 2024	Wellington Management Company Llp	228,727	0.68%

Nov 30, 2024	Wellington Management Company Llp	228,727	0.68%

Oct 31, 2024	Wellington Management Company Llp	120,275	0.36%

Sep 30, 2024	Wellington Management Company Llp	2,937,853	8.79%
Sep 30, 2024	Wellington Management Company Llp	120,275	0.36%