Executive Management

Angus Pacala co-founded Ouster in June 2015 and has served as our Chief Executive Officer and director since then. Previously, Mr. Pacala was Director of Engineering at Quanergy, Inc. from November 2012 to February 2015. Prior to this appointment, Mr. Pacala was Battery Engineer at Amprius, Inc. from June 2011 to October 2012. Mr. Pacala holds a Bachelor of Science degree in mechanical engineering and a Master of Science degree in mechanical engineering from Stanford University. We believe that Mr. Pacala is qualified to serve as a member of our Board due to his extensive technical background and his history as Ouster’s co-founder.

March Frichtl has served as Ouster’s Chief Technology Officer since he co-founded Ouster in June 2015. Previously, Mr. Frichtl was a Technologies Development Engineer at Apple, Inc. from April 2015 to May 2015 and an Engineer at Quanergy, Inc. from July 2013 to April 2015. Mr. Frichtl holds a Bachelor of Science degree in engineering physics and a Master of Science degree in mechanical engineering from Stanford University.

Darien Spencer has served as Ouster’s Chief Operating Officer since July 2017. Previously, Mr. Spencer was Executive Vice President of Operations and Chief Procurement Officer at Enphase Energy, an energy technology company, from August 2013 to April 2017. Prior to that, Mr. Spencer was General Manager of Business Units and Automation at Jabil Circuit, a product solutions company, from August 2012 to August 2013, Co-Founder and Chief Operating and Procurement Officer at Optisolar / Novasolar Corporation from January 2007 to November 2012 and Senior Vice President of Asia Operations at Maxtor Corporation, a hard disk drive manufacturer, and Seagate Technology after the latter acquired Maxtor Corporation in May 2006, from January 2005 to January 2007.

Ken Gianella has served as Ouster’s Chief Financial Officer since May 2025. Prior to joining the Company, Mr. Gianella served as Chief Financial Officer and as Chief Operating Officer at Quantum Corporation (Nasdaq: QMCO), an end-to-end data management solutions provider for AI and unstructured data.  Prior to that, he held multiple leadership and finance roles at energy, water, and smart city technology companies including Itron, Inc. (Nasdaq: ITRI), Silver Spring Networks (Nasdaq: SSNI), and Sensity Systems, Inc., and various senior finance roles at KLA-Tencor Corporation (Nasdaq: KLAC), a semiconductor process control and yield management company   Mr. Gianella holds a Master of Business Administration from University of Pittsburgh and a Bachelor of Science in Business Administration from Duquesne University.

Megan Chung has served as Ouster’s General Counsel since February 2023. She previously served as Ouster’s Deputy General Counsel since July 2021. Prior to joining Ouster, Ms. Chung served as a Partner at the law firm of Kilpatrick Townsend & Stockton LLP from 2014 to July 2021, including as Office Managing Partner for the firm’s San Diego office from October 2019 to July 2021. Ms. Chung’s practice focused on complex and technical intellectual property counseling, litigation, and portfolio management. Ms. Chung received her J.D. from the University of California, Davis School of Law and her B.A. and M.A. from Stanford University.

Cyrille Jacquemet has served as Ouster's Senior Vice President of Global Sales since August 2023. Cyrille has been a strategic sales leader at Ouster since 2018 and brings significant global commercial experience into his new role. Prior to joining Ouster, Cyrille had a fifteen-year career building and guiding sales organizations for dozens of technology companies in the U.S. and Europe. He previously served as the CEO and founder of Business Crescendo, a business development consulting firm focused on international expansion where he supported go-to-market strategies, building strategic partnerships, sales prospecting and customer engagement. He received his Master’s degree in Optical Physics from Institut d'Optique Graduate School in Paris.