Historical shareholding details of Portolan Capital Management, LLC holdings in Bio-Rad Laboratories Inc. - Ordinary Shares - Class A (BIO)

Monthly changes of Portolan Capital Management, LLC shareholding in Bio-Rad Laboratories Inc. - Ordinary Shares - Class A over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Mar 31, 2025	Portolan Capital Management, Llc	4,142	0.01%

Feb 28, 2025	Portolan Capital Management, Llc	4,142	0.01%

Dec 31, 2024	Portolan Capital Management, Llc	30,586	0.11%

Sep 30, 2024	Portolan Capital Management, Llc	21,900	0.08%

Jun 30, 2024	Portolan Capital Management, Llc	25,150	0.09%

Mar 31, 2024	Portolan Capital Management, Llc	90,992	0.33%
Mar 31, 2024	Portolan Capital Management, Llc	70,287	0.25%

Feb 29, 2024	Portolan Capital Management, Llc	70,287	0.25%

Jan 31, 2024	Portolan Capital Management, Llc	70,287	0.24%

Dec 31, 2023	Portolan Capital Management, Llc	57,274	0.20%
Dec 31, 2023	Portolan Capital Management, Llc	70,287	0.24%

Nov 30, 2023	Portolan Capital Management, Llc	70,287	0.24%

Oct 31, 2023	Portolan Capital Management, Llc	70,287	0.24%

Sep 30, 2023	Portolan Capital Management, Llc	42,486	0.15%
Sep 30, 2023	Portolan Capital Management, Llc	70,287	0.24%

Aug 31, 2023	Portolan Capital Management, Llc	70,287	0.24%

Jul 31, 2023	Portolan Capital Management, Llc	70,287	0.24%

Jun 30, 2023	Portolan Capital Management, Llc	65,039	0.22%
Jun 30, 2023	Portolan Capital Management, Llc	70,287	0.24%

May 31, 2023	Portolan Capital Management, Llc	70,287	0.24%

Mar 31, 2023	Portolan Capital Management, Llc	54,360	0.19%