X0306 4 2015-05-04 0 0000768251 ALTERA CORP ALTR 0001540025 WATERS JEFFREY 101 INNOVATION DRIVE SAN JOSE CA 95134 0 1 0 0 SVP & GM, Business Unit Performance Restricted Stock Unit (5) 2015-05-04 4 A 0 19560.0 0.0 A Common Stock 19560 19560 D Restricted Stock Unit (RSU) 2015-05-04 4 A 0 22821.0 0.0 A Common Stock 22821 85445 D Each Restricted Stock Unit ("RSU") represents a contingent right to receive at settlement one share of Altera common stock at no cost. The performance restricted stock units ("PRSUs") were granted under Altera's 2005 Equity Incentive Plan. The exact number of PRSUs (Calculated Shares) that may be earned will be determined by comparing Altera's total shareholder return ("TSR") to the TSR of the Philadelphia Semiconductor Total Return Index (the "Index") immediately preceding and at the end of the three-year period commencing May 4, 2015 and ending May 4, 2018 (the "Performance Period"). Each 1% difference between Altera's TSR and the Index TSR at the end of the Performance Period will result in a 2% upwards or downwards adjustment to the payout percentage. The number of performance stock units shown in columns 5 and 7 is equal to the maximum number of PRSUs that may be earned. The minimum number of PRSUs that may be earned is zero. Subject to the Reporting Person's continuing employment and the provisions set forth in the PRSU award agreement, 100% of the Calculated Shares will vest on May 31, 2018. Subject to the Reporting Person's continuing employment and the provisions in the Altera's standard form of RSU award agreement, the shares shall vest at a rate of 25% annually. Shares will be delivered to the reporting person on such vest date. Jeffrey W Waters 2015-05-06