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

SecurityCPRX / Catalyst Pharmaceuticals, Inc.
InstitutionPRDSX - T. Rowe Price QM U.S. Small-Cap Growth Equity Fund
Latest Disclosed Ownership503,086 shares
Latest Disclosed Value $ 12,456,409
PRDSX - T. Rowe Price QM U.S. Small-Cap Growth Equity Fund ownership in CPRX / Catalyst Pharmaceuticals, Inc.

On May 28, 2026 - PRDSX - T. Rowe Price QM U.S. Small-Cap Growth Equity Fund filed a NPORT-P form disclosing ownership of 503,086 shares of Catalyst Pharmaceuticals, Inc. (US:CPRX) valued at $12,456,409 USD as of March 31, 2026. The entity filed a previous NPORT-P on February 26, 2026 disclosing 503,086 shares of Catalyst Pharmaceuticals, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $15,842,178 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)
2026-05-28 2026-03-31 NP CATALYST PHARMACEUTICALS EC US14888U1016 503,086 0 0.00 12,456 6.08 0.1514
2026-02-26 2025-12-31 NP CATALYST PHARMACEUTICALS EC US14888U1016 503,086 0 0.00 11,742 18.49 0.1408
2025-11-25 2025-09-30 NP CATALYST PHARMACEUTICALS EC US14888U1016 503,086 0 0.00 9,911 -9.22 0.1173
2025-08-26 2025-06-30 NP CATALYST PHARMACEUTICALS EC US14888U1016 503,086 -189,800 -27.39 10,917 -35.03 0.1369
2025-05-30 2025-03-31 NP CATALYST PHARMACEUTICALS EC US14888U1016 692,886 -206,700 -22.98 16,802 -10.50 0.2234
2025-02-27 2024-12-31 NP CATALYST PHARMACEUTICALS EC US14888U1016 899,586 0 0.00 18,774 4.98 0.2211
2024-11-26 2024-09-30 NP CATALYST PHARMACEUTICALS EC US14888U1016 899,586 929 0.10 17,884 28.47 0.2056
2024-08-27 2024-06-30 NP CATALYST PHARMACEUTICALS EC US14888U1016 898,657 8,157 0.92 13,920 -1.93 0.1684
2024-05-29 2024-03-31 NP CATALYST PHARMACEUTICALS EC US14888U1016 890,500 15,500 1.77 14,195 -3.49 0.1677
2024-02-26 2023-12-31 NP CATALYST PHARMACEUTICALS EC US14888U1016 875,000 23,900 2.81 14,709 47.83 0.1887
2023-11-28 2023-09-30 NP CATALYST PHARMACEUTICALS EC US14888U1016 851,100 50,600 6.32 9,949 -7.52 0.1402
2023-08-28 2023-06-30 NP CATALYST PHARMACEUTICALS EC US14888U1016 800,500 58,300 7.86 10,759 -12.57 0.1408
2023-05-26 2023-03-31 NP CATALYST PHARMACEUTICALS EC US14888U1016 742,200 45,700 6.56 12,306 -5.01 0.1717
2023-02-24 2022-12-31 NP CATALYST PHARMACEUTICALS EC US14888U1016 696,500 696,500 12,955 0.1949
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.