Apple CEO Tim Cook today moved up several spots in an annual ranking of the top chief executives in the U.S., climbing eights spots and breaking into the Top 10 for the first time.

Cook received an average approval rating of 94% from Apple employees — current and former — on Glassdoor, an online jobs and careers website, between April 2014 and April 2015. That was an increase of two percentage points, which in Glassdoor’s rating system is not statistically significant.

The rise in the rankings was, however. “Tim Cook is changing the regime at Apple, but only slightly,” said Scott Dobroski, a community expert at Glassdoor who analyzes his firm’s data. “He’s more transparent and open with the company and the world than was Steve Jobs. Apple employees seem to appreciate the subtle changes because people loved Jobs.”

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