On September 25, 2018, L. William Krause informed the board of directors of Coherent, Inc. that, in accordance with the mandatory retirement age guideline in Coherent's Governance Guidelines, he intended to retire from Coherent's Board at the end of his current term and not stand for reelection at Coherent's annual meeting of stockholders to be held in early 2019. Effective as of September 28, 2018, Coherent's Board increased the size of the Board by one director from eight to nine directors, and, following the recommendation of its governance and nominating committee, appointed Michael McMullen to the Board. At this time, Coherent's Board has not appointed Mr. McMullen to any committee of the Board. Michael McMullen has served as Chief Executive Officer of Agilent Technologies, Inc., since March 2015 and as President of Agilent since September 2014.