Historical shareholding details of Wellington Management Company LLP holdings in Old Second Bancorporation Inc. (OSBC)

Monthly changes of Wellington Management Company LLP shareholding in Old Second Bancorporation Inc. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Dec 31, 2024	Wellington Management Company Llp	336,637	0.75%

Sep 30, 2024	Wellington Management Company Llp	322,537	0.72%

Jun 30, 2024	Wellington Management Company Llp	394,200	0.88%

Mar 31, 2024	Wellington Management Company Llp	387,800	0.86%

Dec 31, 2023	Wellington Management Company Llp	387,800	0.86%

Sep 30, 2023	Wellington Management Company Llp	257,600	0.58%

Jun 30, 2023	Wellington Management Company Llp	220,700	0.49%