On June 29, 2018, Eric Larson announced his intention to resign as Vice President and Chief Accounting Officer of Northern Power System Corp. Mr. Larson's resignation will be effective July 27, 2018. Mr. Larson confirmed that his resignation is for personal reasons and did not result from a disagreement with the Company on any matter relating to the Company's operations, policies or practices, including its controls or financial related matters.

On June 29, 2018, the Board of Directors of the Company appointed Ciel R. Caldwell, the Company's President and Chief Operating Officer, as interim Chief Financial Officer, effective as of the date of Mr. Larson's resignation. Ms. Caldwell will continue to serve in the capacity as President and Chief Operating Officer of the Company while she serves as interim Chief Financial Officer. Ms. Caldwell previously has served as the Company's Chief Financial Officer from February 2013 until May 2016.

From May 2016 to August 2016, Ms. Caldwell served as the Company's Senior Vice President for Operations and Finance. Ms. Caldwell joined the Company in February of 2011. Ms. Caldwell began her career at PricewaterhouseCoopers and holds a B.S. in Accounting from Babson College.