Michael Dell returns as Dell CEO (2007)
Dell, which had lost the top PC spot and faced shrinking profits, brought founder Michael Dell back as CEO, replacing Kevin Rollins.
Investors reacted positively to the familiar hand at the tiller, and Dell began a long turnaround that ended with the company going private in 2013.
Founder-return stories became a familiar pattern in tech, with mixed results; Steve Jobs's 1997 return to Apple is the celebrated case.
MongoDB is betting a familiar leader steadies the company during an unsettled transition, the same logic that brought Michael Dell back in 2007.
