LEXICON PHARMACEUTICALS, INC. — Director's Dealing 2012

Oct 25, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: LEXICON PHARMACEUTICALS, INC./DE (LXRX)
CIK: 0001062822
Period of Report: 2012-10-23

Reporting Person: Artal International S.C.A. (Director, 10% Owner)
Reporting Person: Invus, L.P. (Director, 10% Owner)
Reporting Person: Invus Advisors, L.L.C. (Director, 10% Owner)
Reporting Person: Invus Public Equities, L.P. (Director, 10% Owner)
Reporting Person: Invus Public Equities Advisors, LLC (Director, 10% Owner)
Reporting Person: Artal International Management S.A. (Director, 10% Owner)
Reporting Person: Artal Group S.A. (Director, 10% Owner)
Reporting Person: WESTEND S.A. (Director, 10% Owner)
Reporting Person: Stichting Administratiekantoor Westend (Director, 10% Owner)
Reporting Person: Minne Pascal (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-10-23	Common Stock	P	3000000	$2.25	Acquired	283154744	Indirect

Footnotes

F1: On October 23, 2012, Invus, L.P. agreed to purchase 3,000,000 shares of Issuer common stock from the underwriters in a public offering of Issuer common stock. The purchase closed on October 23, 2012.

F2: 247,818,843 of the reported shares of Issuer common stock are owned directly by Invus, L.P., 29,782,609 of the reported shares of Issuer common stock are owned directly by Invus C.V. and 5,553,292 of the reported shares of Issuer common stock are owned directly by Invus Public Equities, L.P. Invus Advisors, L.L.C. is the general partner of Invus, L.P., and Invus Public Equities Advisors, LLC is the general partner of Invus Public Equities, L.P. Artal International S.C.A. is the managing member of each of Invus Advisors, L.L.C. and Invus Public Equities Advisors, LLC. Artal International Management S.A. is the managing partner of Artal International S.C.A., which is a wholly owned subsidiary of Artal Group S.A., which is a wholly owned subsidiary of Westend S.A., which is a wholly owned subsidiary of Stichting Administratiekantoor Westend (the "Stichting"). (Continued in footnote 3)

F3: Mr. Pascal Minne is the sole member of the board of the Stichting. Ulys, L.L.C. is the general partner of Invus C.V., and Mr. Raymond Debbane is the sole member of Ulys, L.L.C. Accordingly, each of the Reporting Persons may be deemed to be beneficial owners of some or all of the reported securities. Each of the Reporting Persons disclaims beneficial ownership of such securities, except to the extent of its or his pecuniary interest therein.