Catalyst Pharmaceuticals, Inc.
US ˙ NASDAQCM ˙ US14888U1016 ˙ Medical Devices
DIESES SYMBOL IST NICHT MEHR AKTIV

SecurityCPRX / Catalyst Pharmaceuticals, Inc.
InstitutionState Of Wisconsin Investment Board
Latest Disclosed Ownership64,944 shares
Latest Disclosed Value $ 2,041,190
State Of Wisconsin Investment Board reports 44.63% decrease in ownership of CPRX / Catalyst Pharmaceuticals, Inc.

On August 14, 2026 - State Of Wisconsin Investment Board filed a 13F-HR form disclosing ownership of 64,944 shares of Catalyst Pharmaceuticals, Inc. (US:CPRX) valued at $2,041,190 USD as of June 30, 2026. The entity filed a previous 13F-HR on May 15, 2026 disclosing 117,296 shares of Catalyst Pharmaceuticals, Inc.. This represents a change in shares of -44.63% during the quarter. The current value of the position is $2,045,087 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-08-14 2026-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 64,944 -52,352 -44.63 2,041 -29.72 0.0041
2026-05-15 2026-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 117,296 -4,123 -3.40 2,904 2.51 0.0066
2026-02-17 2025-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 121,419 49,391 68.57 2,834 99.79 0.0063
2025-11-14 2025-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 72,028 -25,443 -26.10 1,419 -32.96 0.0033
2025-08-14 2025-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 97,471 -35,135 -26.50 2,115 -34.21 0.0052
2025-05-15 2025-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 132,606 -49,171 -27.05 3,216 -15.24 0.0083
2025-02-14 2024-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 181,777 -21,693 -10.66 3,794 -6.21 0.0097
2024-11-14 2024-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 203,470 -32,493 -13.77 4,045 10.64 0.0102
2024-08-14 2024-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 235,963 25,561 12.15 3,655 9.01 0.0097
2024-05-14 2024-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 210,402 57,371 37.49 3,354 30.37 0.0088
2024-02-12 2023-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 153,031 68,203 80.40 2,572 159.54 0.0073
2023-11-14 2023-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 84,828 -1,846 -2.13 992 -14.86 0.0031
2023-08-14 2023-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 86,674 -4,527 -4.96 1,165 -23.02 0.0033
2023-05-15 2023-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 91,201 -6,779 -6.92 1,512 -17.01 0.0045
2023-02-14 2022-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 97,980 -1,520 -1.53 1,822 42.68 0.0059
2022-11-14 2022-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 99,500 -5,430 -5.17 1,277 73.51 0.0041
2022-08-15 2022-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 104,930 -27,470 -20.75 736 -32.97 0.0019
2022-05-13 2022-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 132,400 -39,300 -22.89 1,098 -5.51 0.0023
2022-02-11 2021-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 171,700 39,300 29.68 1,162 65.53 0.0022
2021-11-12 2021-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 132,400 0 0.00 702 -7.75 0.0015
2021-08-12 2021-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 132,400 0 0.00 761 24.75 0.0016
2021-05-17 2021-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 132,400 0 0.00 610 38.01 0.0013
2021-02-03 2020-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 132,400 -16,500 -11.08 442 0.00 0.0010
2020-11-16 2020-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 148,900 0 0.00 442 -35.76 0.0011
2020-08-12 2020-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 148,900 0 0.00 688 20.07 0.0019
2020-05-06 2020-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 148,900 4,200 2.90 573 5.52 0.0019
2020-02-14 2019-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 144,700 0 0.00 543 -29.30 0.0014
2019-11-12 2019-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 144,700 13,500 10.29 768 52.38 0.0021
2019-08-14 2019-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 131,200 2,900 2.26 504 -22.94 0.0014
2019-05-13 2019-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 128,300 29,300 29.60 654 244.21 0.0019
2019-02-11 2018-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 99,000 45,000 83.33 190 -6.86 0.0006
2018-11-14 2018-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 54,000 0 0.00 204 21.43 0.0006
2018-08-03 2018-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 54,000 0 0.00 168 30.23 0.0005
2018-05-07 2018-03-31 13F CATALYST PHARMACEUTICALS COM 14888U101 54,000 0 0.00 129 -38.86 0.0004
2018-02-08 2017-12-31 13F CATALYST PHARMACEUTICALS COM 14888U101 54,000 0 0.00 211 55.15 0.0006
2017-11-01 2017-09-30 13F CATALYST PHARMACEUTICALS COM 14888U101 54,000 0 0.00 136 -8.72 0.0004
2017-08-03 2017-06-30 13F CATALYST PHARMACEUTICALS COM 14888U101 54,000 54,000 149 0.0005
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.