Board dynamics are changing as boards become more active. For CEOs, working effectively with this new breed may require new, more inclusive approaches.

As the US population continues to diversify, companies will need to appoint more women and minorities to management and board roles.

A new survey from PwC looks at board composition, with a focus on the number of women on boards in nine key industries in the US.

CEO succession planning is a critical process, and one of the top responsibilities of boards and CEOs. It is also a major challenge for many companies. When Masayoshi Son, founder and CEO of Japanese telecoms conglomerate SoftBank said he wanted to retire, the CEO search began. Five years later, in 2015, Nikesh Arora was appointed to the top job. This summer Son changed his mind, saying he will stay for another 5-10 years.

American activist investor William Ackman, known for ousting board members and executives deemed underperforming, is taking aim at Chipotle Mexican Grill. The fast food chain’s stock has fallen nearly 40% following a wave of food safety issues. Ackman, whose hedge fund is buying a 9.9% stake in the company, believes he can save it. This could involve reshuffling its longstanding board and replacing its two Co-Chief Executives.