X0204 3 2012-02-07 0 0001344413 Alexza Pharmaceuticals Inc. ALXA 0001539739 Occitan Capital Management Inc. WALKER HOUSE 87 MARY STREET, GEORGE TOWN GRAND CAYMAN E9 KY1-9005 CAYMAN ISLANDS 0 0 1 1 See remarks 0001509544 OCCITAN MASTER FUND L.P. WALKER HOUSE, 87 MARY STREET GEORGE TOWN GRAND CAYMAN E9 KY1-9005 CAYMAN ISLANDS 0 0 1 1 See remarks Common Stock, par value $0.0001 3548208 I See notes Call Option (right to buy) 1 2012-02-07 2012-03-16 Common Stock 4314700 I See notes Call Option (right to buy) 2 2012-02-07 2012-06-15 Common Stock 1020000 I See notes Call Option (right to buy) 1 2012-02-07 2012-06-15 Common Stock 2666500 I See notes Call Option (obligation to sell) 6 2012-02-07 2012-06-15 Common Stock 4700000 I See notes Call Option (right to buy) 6 2012-02-07 2012-06-15 Common Stock 4700000 I See notes The securities reported herein are directly beneficially owned by Occitan Master Fund L.P. and may be deemed to be indirectly beneficially owned by Occitan Capital Management Inc. as General Partner of Occitan Master Fund L.P. Each reporting person listed herein disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that such person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. The reporting persons herein may be deemed to be members of a "group" for purposes of the Securities Exchange Act of 1934, as amended. Each reporting person disclaims beneficial ownership of any securities deemed to be owned by the group that are not directly owned by such reporting person. This report shall not be deemed an admission that such reporting person is a member of a group or the beneficial owner of any securities not directly owned by such reporting person. Name: Occitan Master Fund L.P. Address: Walker House, 87 Mary Street, George Town, Grand Cayman, Cayman Islands, KY1-9005 Designated Filer: Occitan Capital Management Inc. Issuer & Ticker: Alexza Pharmaceuticals Inc. [ALXA] Date of Event Requiring Statement: 02/07/2012 Name: Occitan Capital Management Inc. Address: Walker House, 87 Mary Street, George Town, Grand Cayman, Cayman Islands, KY1-9005 Designated Filer: Occitan Capital Management Inc. Issuer & Ticker: Alexza Pharmaceuticals Inc. [ALXA] Date of Event Requiring Statement: 02/07/2012 By: Occitan Master Fund L.P. By: Occitan Capital Management Inc., /s/ Pearse Griffith, Director 2012-02-07 By: Occitan Capital Management Inc., /s/ Pearse Griffith, Director 2012-02-07