Catalyst Pharmaceuticals, Inc.
US ˙ NasdaqCM ˙ US14888U1016

SecurityCPRX / Catalyst Pharmaceuticals, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership36,024 shares
Latest Disclosed Value $ 891,954
Citigroup Inc reports 30.32% decrease in ownership of CPRX / Catalyst Pharmaceuticals, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 36,024 shares of Catalyst Pharmaceuticals, Inc. (US:CPRX) valued at $891,954 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 51,697 shares of Catalyst Pharmaceuticals, Inc.. This represents a change in shares of -30.32% during the quarter. The current value of the position is $1,126,831 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)
2026-05-11 2026-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 36,024 -15,673 -30.32 892 -26.12 0.0002
2026-02-13 2025-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 51,697 1,446 2.88 1,207 21.94 0.0005
2025-11-10 2025-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 50,251 -77,509 -60.67 990 -64.32 0.0004
2025-08-11 2025-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 127,760 -124,628 -49.38 2,772 -54.71 0.0014
2025-05-12 2025-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 252,388 32,654 14.86 6,120 33.48 0.0031
2025-02-12 2024-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 219,734 64,240 41.31 4,586 48.33 0.0027
2024-11-12 2024-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 155,494 40,383 35.08 3,091 73.36 0.0018
2024-08-12 2024-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 115,111 -375,593 -76.54 1,783 -77.20 0.0011
2024-05-10 2024-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 490,704 284,860 138.39 7,822 126.04 0.0051
2024-02-09 2023-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 205,844 -52,482 -20.32 3,460 14.61 0.0024
2023-12-06 2023-09-30 13F/A-1 CATALYST PHARMACEUTICALS COM 14888U101 258,326 -28,081 -9.80 3,020 -21.56 0.0023
2023-11-09 2023-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 258,326 -28,081 3,020 0.0009
2023-08-10 2023-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 286,407 -145,897 -33.75 3,849 -46.30 0.0025
2023-05-11 2023-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 432,304 143,137 49.50 7,168 33.27 0.0050
2023-02-09 2022-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 289,167 -135,470 -31.90 5,379 -1.28 0.0043
2022-11-10 2022-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 424,637 216,408 103.93 5,448 273.15 0.0039
2022-08-10 2022-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 208,229 149,302 253.37 1,460 198.57 0.0011
2022-05-12 2022-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 58,927 -152,908 -72.18 489 -65.90 0.0003
2022-02-10 2021-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 211,835 79,539 60.12 1,434 104.56 0.0008
2021-11-10 2021-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 132,296 -162,208 -55.08 701 -58.59 0.0004
2021-08-10 2021-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 294,504 -378,729 -56.26 1,693 -45.44 0.0010
2021-05-13 2021-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 673,233 652,727 3,183.10 3,103 4,463.24 0.0020
2021-02-11 2020-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 20,506 12,796 165.97 68 195.65 0.0000
2020-11-12 2020-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 7,710 -111,168 -93.51 23 -95.81 0.0000
2020-08-12 2020-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 118,878 -32,951 -21.70 549 -6.15 0.0004
2020-05-12 2020-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 151,829 -49,301 -24.51 585 -22.41 0.0005
2020-02-12 2019-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 201,130 111,656 124.79 754 58.74 0.0005
2019-11-08 2019-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 89,474 62,542 232.22 475 361.17 0.0004
2019-08-12 2019-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 26,932 787 3.01 103 -23.13 0.0001
2019-05-13 2019-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 26,145 833 3.29 134 173.47 0.0001
2019-02-12 2018-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 25,312 -1,165 -4.40 49 -51.00 0.0000
2018-11-13 2018-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 26,477 4,287 19.32 100 44.93 0.0001
2018-08-10 2018-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 22,190 -16,940 -43.29 69 -26.60 0.0001
2018-05-11 2018-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 39,130 31,928 443.32 94 235.71 0.0001
2018-02-12 2017-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 7,202 7,067 5,234.81 28 0.0000
2017-11-13 2017-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 135 -45 -25.00 0 0.0000
2017-08-11 2017-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 180 -3,908 -95.60 0 -100.00
2017-05-12 2017-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 4,088 0 0.00 8 100.00 0.0000
2017-02-10 2016-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 4,088 0 0.00 4 0.00 0.0000
2016-11-10 2016-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 4,088 -7,350 -64.26 4 -50.00 0.0000
2016-08-12 2016-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 11,438 -62,174 -84.46 8 -90.70 0.0000
2016-05-13 2016-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 73,612 50,896 224.05 86 53.57 0.0001
2016-02-12 2015-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 22,716 22,704 189,200.00 56 0.0001
2015-11-13 2015-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 12 -967 -98.77 0 -100.00
2015-08-13 2015-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 979 951 3,396.43 4 0.0000
2015-05-14 2015-03-31 13F CATALYST PHARM PARTNERS COM 14888U101 28 28 0.00 0 0.0000
2015-02-17 2014-12-31 13F CATALYST PHARM PARTNERS COM 14888U101 0 -10,096 -100.00 0 -100.00
2014-11-14 2014-09-30 13F CATALYST PHARM PARTNERS COM 14888U101 10,096 6,558 185.36 34 277.78 0.0000
2014-08-14 2014-06-30 13F CATALYST PHARM PARTNERS COM 14888U101 3,538 3,038 607.60 9 800.00 0.0000
2014-02-14 2013-12-31 13F CATALYST PHARM PARTNERS COM 14888U101 500 0 0.00 1 -50.00 0.0000
2013-11-14 2013-09-30 13F CATALYST PHARM PARTNERS COM 14888U101 500 500 2 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.