X0305 4 2012-05-22 0 0001145404 CORNERSTONE THERAPEUTICS INC CRTX 0001469442 Stephan Robert C/O CHIESI FARMACEUTICI SPA VIA PALERMO 26/A PARMA L6 L643122 ITALY 1 0 0 0 Option to Purchase Common Stock (Right to Buy) 5.11 2012-05-22 4 A 0 15000 0.00 A 2022-05-22 Common Stock 15000 15000 D Shares subject to these options vest in 12 approximately equal monthly installments with the first installment vesting as of June 22, 2012. These options were granted pursuant to the terms of Cornerstone Therapeutics Inc. Amended and Restated Non-Employee Director Compensation and Reimbursement Policy, effective May 18, 2011. /s/ Andrew K.W. Powell, attorney in fact for Robert Stephan pursuant to a power of attorney 2012-05-23