Sundar Pichai, James Gorman, and Sheryl Sandberg have all worked for McKinsey. Here's why the consultancy is a CEO factory.

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• Many Fortune 500 CEOs have previously worked at McKinsey.
• These include Google's Sundar Pichai and ex-Meta COO Sheryl Sandberg.
• The firm has become known as a CEO factory, but has sparked controversy in the past, too.

McKinsey is back in the headlines.

The Wall Street Journal reported on Wednesday that the Department of Justice is conducting a criminal investigation into the management consultancy...