Reinout Oussoren, the Interim Co-Chief Executive Officer of Northern Power Systems Corp. and NPS Corp’s US subsidiary Northern Power Systems Inc. provided the Board of Directors with a notice of his resignation from his position as Interim Co-Chief Executive Officer of NPS Corp. and NPS Inc., effective June 6, 2019. Oussoren continues to serve as an officer and director of Northern Power Systems SRL (“NPS SRL”), NPS Inc.’s wholly-owned operating subsidiary in Italy.