Effective December 17, 2018, Maria Cirino resigned from the board of directors of Carbon Black, Inc. and as a member of the compensation committee and nominating and corporate governance committee of the Board. On December 17, 2018, the Board appointed Jill Ward to the Board as a class I director to fill the vacancy created by Ms. Cirino’s resignation. The term of the company’s class I directors, including Ms. Ward, expires at the annual meeting of stockholders to be held in 2019 or upon the election and qualification of successor directors.