CATALYST PHARMACEUTICALS, INC. — Director's Dealing 2012

May 29, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CATALYST PHARMACEUTICAL PARTNERS, INC. (CPRX)
CIK: 0001369568
Period of Report: 2012-05-24

Reporting Person: Winship M Douglas (VP, Regulatory Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-24	Common Stock, par value $0.001 per share	P	12500	$0.80	Acquired	17294	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-24	Warrants to purchase common stock	$1.04	P	12500	Acquired	2017-05-30	Common Stock (12500)	Direct

Footnotes

F1: Securities were sold as units, each consisting of one share of the Issuer's common stock and one five-year warrant to purchase one share of the Issuer's common stock, at a price of $0.80 per unit.