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Access your KLA-Tencor shareholder account from the KLA-Tencor Investor Relations Web site. Account access is available to shareholders of record through Computershare.

First Class, Registered & Certified Mail
Computershare
P.O. Box 43023
Providence, RI 02940-3023

Overnight Courier
Computershare
Blue HIlls Office Park
150 Royal1 Street
MS 45-01-46
Canton, MA 02021

Shareholder Services: 1-800-730-6001