On May 22, 2018, ORBCOMM Inc. announced that Robert Costantini has resigned from his position as Executive Vice President and Chief Financial Officer of the company effective May 17, 2018. Mr. Costantini's resignation was not the result of any dispute or disagreement with the company on any matter relating to the company's operations, policies, practices or financial statements, including its controls or other financial related matters. In connection with Mr. Costantini's resignation, the Company has initiated a search for a new Chief Financial Officer and until one is appointed, Constantine Dean Milcos, age 52, has been appointed as Interim Chief Financial Officer effective immediately.

Mr. Milcos has served as the Company's Senior Vice President and Chief Accounting Officer since September 25, 2013 and will continue in that role while also serving as Interim Chief Financial Officer. Prior to joining the Company, Mr. Milcos served in various accounting roles at Medco Health Solutions.