Heather Bresch

Last year’s scandal over Mylan’s 500% price hike of the EpiPen, a potentially lifesaving allergy treatment, tarnished Bresch’s reputation, but it didn’t hurt her business as much as some expected. The company grew revenue 18%, to more than $11 billion in 2016, and forecasts growth of up to 13% this year, in part thanks to its acquisition of Swedish drugmaker Meda. But the EpiPen debacle took its toll in other ways: The company coughed up a $465 million settlement fine, prompting profits to drop 43%.

For more on Bresch, read Fortune’s 2015 feature, “Why Wall Street Loves to Hate Mylan’s CEO" and "Why the CEO Behind the EpiPen Controversy Remains One of Fortune’s Most Powerful Women."