"Effective June 21, 2013, the Compensation Committee of the Board of Directors of Apple Inc. approved the amendment of the restricted stock units awarded on August 24, 2011 to Timothy D. Cook, the Company's Chief Executive Officer. The amendment does not change the original grant date fair value of Mr. Cook's award as originally reported in the Company's Proxy Statement filed with the SEC on January 9, 2012. It does, however, align Mr. Cook's potential realizable compensation from the award with Company performance, and reflects the Committee's intent to have a portion of future equity awards be performance-based for the Company's executive officers, and for Mr. Cook to lead by example."
A recent Apple filing with the Securities and Exchange Commission revealed that Apple has made changes to Tim Cook's restricted stock unit award -- making it the main driver of Cook's compensation as CEO. The filing states: