Historical shareholding details of Portolan Capital Management, LLC holdings in Castle Biosciences Inc (CSTL)

Monthly changes of Portolan Capital Management, LLC shareholding in Castle Biosciences Inc over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Feb 28, 2025	Portolan Capital Management, Llc	176,085	0.62%

Dec 31, 2024	Portolan Capital Management, Llc	776,579	2.72%

Sep 30, 2024	Portolan Capital Management, Llc	1,255,628	4.48%

Jun 30, 2024	Portolan Capital Management, Llc	1,210,952	4.32%

Mar 31, 2024	Portolan Capital Management, Llc	1,043,410	3.76%
Mar 31, 2024	Portolan Capital Management, Llc	641,444	2.33%

Feb 29, 2024	Portolan Capital Management, Llc	641,444	2.34%

Jan 31, 2024	Portolan Capital Management, Llc	641,444	2.38%

Dec 31, 2023	Portolan Capital Management, Llc	728,653	2.64%
Dec 31, 2023	Portolan Capital Management, Llc	641,444	2.38%

Nov 30, 2023	Portolan Capital Management, Llc	641,444	2.38%

Oct 31, 2023	Portolan Capital Management, Llc	641,444	2.39%

Sep 30, 2023	Portolan Capital Management, Llc	253,028	0.94%
Sep 30, 2023	Portolan Capital Management, Llc	641,444	2.39%

Aug 31, 2023	Portolan Capital Management, Llc	641,444	2.39%

Jul 31, 2023	Portolan Capital Management, Llc	641,444	2.40%

Jun 30, 2023	Portolan Capital Management, Llc	431,474	1.61%
Jun 30, 2023	Portolan Capital Management, Llc	641,444	2.40%

May 31, 2023	Portolan Capital Management, Llc	641,444	2.40%

Mar 31, 2023	Portolan Capital Management, Llc	256,649	0.96%