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: HUCKEL HUBERT E MD (Director)

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	125000	$0.80	Acquired	1304134	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-24	Warrants to purchase common stock	$1.04	P	125000	Acquired	2017-05-30	Common Stock (125000)	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Options to purchase common stock	$1.07	2016-12-16	Common Stock (824608)	824608	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.

F2: Securities are held in a Grantor Retained Annuity Trust, the Trustee of which is Dr. Huckel.