Catalyst Pharmaceuticals, Inc.
US ˙ NasdaqCM ˙ US14888U1016

SecurityCPRX / Catalyst Pharmaceuticals, Inc.
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership51,892 shares
Latest Disclosed Value $ 1,284,846
Lazard Asset Management Llc reports 5.79% decrease in ownership of CPRX / Catalyst Pharmaceuticals, Inc.

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 51,892 shares of Catalyst Pharmaceuticals, Inc. (US:CPRX) valued at $1,284,846 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 55,079 shares of Catalyst Pharmaceuticals, Inc.. This represents a change in shares of -5.79% during the quarter. The current value of the position is $1,622,663 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 Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 51,892 -3,187 -5.79 1,285 -0.08 0.0011
2026-02-17 2025-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 55,079 5,755 11.67 1,286 32.34 0.0022
2025-11-14 2025-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 49,324 5,355 12.18 972 0.0013
2025-08-14 2025-06-30 13F CATALYST PHARMA Common Stock 14888U101 43,969 -129,257 -74.62 1 -100.00 0.0013
2025-05-15 2025-03-31 13F CATALYST PHARMA Common Stock 14888U101 173,226 47,883 38.20 4 100.00 0.0064
2025-02-14 2024-12-31 13F CATALYST PHARMA Common Stock 14888U101 125,343 46,318 58.61 3 100.00 0.0038
2024-11-14 2024-09-30 13F CATALYST PHARMA Common Stock 14888U101 79,025 56,144 245.37 2 0.0021
2024-08-14 2024-06-30 13F CATALYST PHARMA Common Stock 14888U101 22,881 -7,453 -24.57 0 0.0004
2024-07-09 2024-03-31 13F/A-1 CATALYST PHARMA Common Stock 14888U101 30,334 8,133 36.63 0 0.0006
2024-05-14 2024-03-31 13F CATALYST PHARMA Common Stock 14888U101 30,334 8,133 0 0.0006
2024-02-14 2023-12-31 13F CATALYST PHARMA Common Stock 14888U101 22,201 1,127 5.35 0 0.0005
2023-11-14 2023-09-30 13F CATALYST PHARMA Common Stock 14888U101 21,074 3,078 17.10 0 0.0003
2023-08-15 2023-06-30 13F CATALYST PHARMA Common Stock 14888U101 17,996 -5,182 -22.36 0 0.0003
2023-05-15 2023-03-31 13F CATALYST PHARMA Common Stock 14888U101 23,178 -16,980 -42.28 0 -100.00 0.0005
2023-02-15 2022-12-31 13F CATALYST PHARMA Common Stock 14888U101 40,158 17,032 73.65 746 152.03 0.0010
2022-11-14 2022-09-30 13F CATALYST PHARMA Common Stock 14888U101 23,126 418 1.84 296 86.16 0.0004
2022-08-09 2022-06-30 13F CATALYST PHARMA Common Stock 14888U101 22,708 -47,567 -67.69 159 -72.68 0.0002
2022-05-13 2022-03-31 13F CATALYST PHARMA Common Stock 14888U101 70,275 62,901 853.01 582 1,087.76 0.0007
2022-02-09 2021-12-31 13F CATALYST PHARMA Common Stock 14888U101 7,374 -1,441 -16.35 49 6.52 0.0001
2021-11-15 2021-09-30 13F CATALYST PHARMA Common Stock 14888U101 8,815 8,815 46 0.0001
2021-08-12 2021-06-30 13F CATALYST PHARMA Common Stock 14888U101 0 -21,583 -100.00 0 -100.00
2021-05-14 2021-03-31 13F CATALYST PHARMA Common Stock 14888U101 21,583 21,583 99 0.0001
2021-02-11 2020-12-31 13F CATALYST PHARMA Common Stock 14888U101 0 -18,161 -100.00 0 -100.00
2020-11-13 2020-09-30 13F CATALYST PHARMA Common Stock 14888U101 18,161 6,791 59.73 53 1.92 0.0001
2020-08-13 2020-06-30 13F CATALYST PHARMA Common Stock 14888U101 11,370 -1,360 -10.68 52 6.12 0.0001
2020-05-14 2020-03-31 13F CATALYST PHARMA Common Stock 14888U101 12,730 8,960 237.67 49 250.00 0.0001
2020-02-13 2019-12-31 13F CATALYST PHARMA Common Stock 14888U101 3,770 3,770 14 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.