Alliancebernstein L.p. reports 1.01% increase in ownership of CPRX / Catalyst Pharmaceuticals, Inc.

催化劑製藥公司

US ˙ NasdaqCM ˙ US14888U1016

Security	CPRX / Catalyst Pharmaceuticals, Inc.
Institution	Alliancebernstein L.p.
Latest Disclosed Ownership	119,820 shares
Latest Disclosed Value	$ 2,796,599

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 119,820 shares of Catalyst Pharmaceuticals, Inc. (US:CPRX) valued at $2,966,743 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 118,620 shares of Catalyst Pharmaceuticals, Inc.. This represents a change in shares of 1.01% during the quarter. The current value of the position is $3,749,168 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)

File Date	Effective Date	Form	Security	Class	ID	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-15	2026-03-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	119,820	1,200	1.01	2,797	1.01	0.0009
2026-02-17	2025-12-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	118,620	-4,685	-3.80	2,769	13.96	0.0009
2025-11-14	2025-09-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	123,305	75	0.06	2,429	-9.16	0.0008
2025-08-14	2025-06-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	123,230	3,100	2.58	2,674	-8.20	0.0009
2025-05-15	2025-03-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	120,130	4,610	3.99	2,913	20.87	0.0011
2025-02-12	2024-12-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	115,520	-4,522	-3.77	2,411	1.01	0.0008
2024-11-14	2024-09-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	120,042	-5,700	-4.53	2,386	22.55	0.0008
2024-08-14	2024-06-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	125,742	8,590	7.33	1,948	4.28	0.0007
2024-05-14	2024-03-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	117,152	0	0.00	1,867	-5.18	0.0007
2024-02-14	2023-12-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	117,152	4,100	3.63	1,969	49.05	0.0008
2023-11-14	2023-09-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	113,052	-186,030	-62.20	1,322	-67.13	0.0006
2023-08-15	2023-06-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	299,082	162,460	118.91	4,020	77.44	0.0016
2023-05-15	2023-03-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	136,622	-14,131	-9.37	2,265	-19.22	0.0010
2023-02-15	2022-12-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	150,753	-3,946	-2.55	2,804	41.26	0.0013
2022-11-15	2022-09-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	154,699	-363,012	-70.12	1,985	-45.30	0.0010
2022-08-15	2022-06-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	517,711	383,311	285.20	3,629	225.76	0.0017
2022-05-13	2022-03-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	134,400	500	0.37	1,114	22.82	0.0004
2022-02-14	2021-12-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	133,900	0	0.00	907	27.75	0.0003
2021-11-10	2021-09-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	133,900	-8,048	-5.67	710	-12.99	0.0003
2021-07-30	2021-06-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	141,948	0	0.00	816	24.77	0.0003
2021-05-06	2021-03-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	141,948	-14,839	-9.46	654	24.81	0.0003
2021-02-08	2020-12-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	156,787	7,987	5.37	524	18.55	0.0002
2020-11-12	2020-09-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	148,800	0	0.00	442	-35.66	0.0002
2020-08-13	2020-06-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	148,800	0	0.00	687	19.90	0.0004
2020-05-14	2020-03-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	148,800	0	0.00	573	2.69	0.0004
2020-02-18	2019-12-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	148,800	0	0.00	558	-29.37	0.0003
2019-11-14	2019-09-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	148,800	0	0.00	790	38.35	0.0005
2019-08-14	2019-06-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	148,800	59,700	67.00	571	25.77	0.0004
2019-05-14	2019-03-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	89,100	42,600	91.61	454	410.11	0.0003
2019-02-13	2018-12-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	46,500	10,100	27.75	89	-35.51	0.0001
2018-11-08	2018-09-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	36,400	7,200	24.66	138	51.65	0.0001
2018-08-13	2018-06-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	29,200	11,500	64.97	91	116.67	0.0001
2018-05-14	2018-03-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	17,700	7,300	70.19	42	2.44	0.0000
2018-02-13	2017-12-31	13F	CATALYST PHARMACEUTICALS	COM	14888U101	10,400	-1,400	-11.86	41	36.67	0.0000
2017-11-13	2017-09-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	11,800	0	0.00	30	-9.09	0.0000
2017-08-10	2017-06-30	13F	CATALYST PHARMACEUTICALS	COM	14888U101	11,800	11,436	3,141.76	33	3,200.00	0.0000
2014-05-13	2014-03-31	13F	CATALYST PHARMACEUTICAL PARTNERS	COM	14888U101	364	0	0.00	1	0.00	0.0000
2014-02-13	2013-12-31	13F	CATALYST PHARMACEUTICAL PARTNERS	COM	14888U101	364	0	0.00	1	0.00	0.0000
2013-11-14	2013-09-30	13F	CATALYST PHARMACEUTICAL PARTNERS	COM	14888U101	364	364		1		0.0000

Legend

Shares: The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value: The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price: The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class: This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred

Allocation (%): The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation: The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%): The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis: The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss: This is the market value of the position as of the effective date minus the cost basis.