Sandisk's board of directors has approved an additional $14 billion stock repurchase program, bringing its total remaining repurchase authorization to $15.5 billion, approximately 8.6% of the company's current market capitalization. This move follows the company's strong fiscal fourth-quarter results, which saw revenue grow 372% year-over-year to $8.97 billion, a gross margin of 84.6%, and full-year net income of $11.4 billion.