Companies of all sizes should be prepared for a "tremendous amount of activity in the space in 2021."

Activism against M&A reached an all-time high this year, with more first-time and nontraditional activists agitating for change.

Recount shows activist investor won seat by slim margin.

Recount shows activist investor won seat by slim margin.

Activists nominees receive less than 25% of shareholders' votes.

Activists nominees receive less than 25% of shareholders' votes.

The company's move sets the stage for a proxy fight with the activist investor.

The company's move sets the stage for a proxy fight with the activist investor.