EXHIBIT 4.1 IMPAX LABORATORIES, INC. 3.50% CONVERTIBLE SENIOR SUBORDINATED DEBENTURES DUE 2012 PURCHASE AGREEMENTImpax Laboratories Inc • June 28th, 2005 • Pharmaceutical preparations • New York
EXHIBIT 4.3 REGISTRATION RIGHTS AGREEMENT dated as of June 27, 2005 (the "Agreement") between IMPAX Laboratories, Inc., a Delaware corporation (the "Company") and the undersigned initial purchasers (each, an "Initial Purchaser", and collectively, the...Registration Rights Agreement • June 28th, 2005 • Impax Laboratories Inc • Pharmaceutical preparations • New York
