ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

Holdings History for CATALYST PHARMACEUTICALS, INC. - COMMON STOCK (CPRX)

Symbol: CPRX on Nasdaq
Investment type: Equity / COMMON STOCK

Shares, Excluding Options vs Price

Value, Excluding Options

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
31 Dec 2025	0.02%	+0%	$37,745,635	1,617,208	+312,434	+24%	$23.34	Q4 2025
30 Sep 2025	0.02%	+0%	$25,704,048	1,304,774	+81,151	+6.6%	$19.70	Q3 2025
30 Jun 2025	0.02%	+0%	$26,552,619	1,223,623	+188,594	+18%	$21.70	Q2 2025
31 Mar 2025	0.02%	+0.01%	$25,099,453	1,035,029	+336,877		$24.25	Q1 2025
31 Dec 2024	0.01%	+0.01%	$14,570,432	698,152	+396,506	+131%	$20.87	Q4 2024
30 Sep 2024	0.01%	+0.01%	$5,996,722	301,646	+301,646	NEW	$19.88	Q3 2024
30 Jun 2024		-0%	$0	0	-12,921	-100%	$24.44	Q2 2024
31 Mar 2024	0%	+0%	$206,000	12,921	+12,921	NEW	$15.94	Q1 2024
31 Dec 2023		-0%	$0	0	-144,699	-100%	$24.44	Q4 2023
30 Sep 2023	0%	+0%	$1,692,000	144,699	+82,744	+134%	$11.69	Q3 2023
30 Jun 2023	0%	-0%	$833,000	61,955	-105,832	-63%	$13.45	Q2 2023
31 Mar 2023	0%	+0%	$2,782,000	167,787	+167,787	NEW	$16.58	Q1 2023
30 Sep 2022		-0%	$0	0	-19,548	-100%	$24.44	Q3 2022
30 Jun 2022	0%	-0%	$137,000	19,548	-295,603	-94%	$7.01	Q2 2022
31 Mar 2022	0%	+0%	$2,613,000	315,151	+139,102	+79%	$8.29	Q1 2022
31 Dec 2021	0%	+0%	$1,192,000	176,049	+145,249	+472%	$6.77	Q4 2021
30 Sep 2021	0%	+0%	$163,000	30,800	+30,800	NEW	$5.29	Q3 2021
31 Mar 2021		-0%	$0	0	-295,292	-100%	$24.44	Q1 2021
31 Dec 2020	0%	+0%	$986,000	295,292	+295,292	NEW	$3.34	Q4 2020
30 Sep 2020		-0%	$0	0	-63,400	-100%	$24.44	Q3 2020
30 Jun 2020	0%	+0%	$293,000	63,400	+63,400	NEW	$4.62	Q2 2020
31 Mar 2020		-0.01%	$0	0	-731,259	-100%	$24.44	Q1 2020
31 Dec 2019	0.01%	+0.01%	$2,742,000	731,259	+731,259	NEW	$3.75	Q4 2019

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.