Board Committees

William D. Porteous has served as one of our directors since August 2021. Mr. Porteous served as one of the directors of Legacy Spire from May 2014 through the Closing. Since August 2000, Mr. Porteous has been with RRE Ventures, LLC, a venture capital firm, where he currently serves as a General Partner and the firm’s Chief Operating Officer. Over the course of his career, Mr. Porteous has served on the board of directors of more than 20 companies. In addition to Spire, Mr. Porteous currently serves as Chairman of the Board of Directors of BlackSky Technology Inc., (NYSE: BKSY) as well as Nanit, Paperless Post, Pattern, Pilot Fiber, Ursa, and Wave. Mr. Porteous has also served as Co-Chairman and Founder at the Dockery Farms Foundation, a non-profit dedicated to preserving the historic property and heritage of Dockery Farms. Mr. Porteous served as an Adjunct Professor at Columbia University from January 2003 to May 2018. Mr. Porteous holds a B.A. in English from Stanford University, an M.B.A. from the Harvard Business School, and an M.Sc. in Economics and Industrial Relations from the London School of Economics and Political Science.

Joan Amble has served as one of our directors since August 2022. She has an extensive career in finance, most recently serving as Executive Vice President, Finance, and Comptroller for American Express. Prior to holding senior leadership positions at American Express, Ms. Amble spent more than a decade at General Electric, most recently serving as Chief Operating Officer and Chief Financial Officer for GE Capital markets, overseeing securitizations, debt placement, and syndication, as well as structured equity transactions. She has extensive experience in corporate governance, having served on the Board of Directors of Broadcom Corp, Brown-Forman, Sirius XM Holdings Inc., and as an independent advisor to the Executive Committee of the U.S. affiliate of Societe Generate S.A. Ms. Amble currently serves on the Board of Directors of Zurich Insurance Group AG and Booz Allen Hamilton Holding Corp. Until May 2023, she was a board member, audit committee chair and member of the nomination and governance committee at BuzzFeed, Inc. She is currently the president of JCA Consulting, LLC. Throughout her career, Ms. Amble has been a tremendous advocate for the professional development of women in business. She is the co-founder of W.O.M.E.N in America, a leadership program launched in the fall of 2009.

Dirk Hoke has served as one of our directors since November 2021. Mr. Hoke is currently the Chief Executive Officer of VOITH Group, a global operating technology company. Mr. Hoke was the Chief Executive Officer of Volocopter GmbH, the pioneer of Urban Air Mobility, until February 2025. In December 2024, Volocopter GmbH began provisional insolvency proceedings and was subsequently acquired by Diamond Aircraft Industries in March 2025. Prior to joining us, Mr. Hoke served as the Chief Executive Officer of the Airbus Defence and Space division of Airbus SE and served as a member of the Airbus Executive Committee from January 2016 to August 2021. Before joining Airbus, he worked at Siemens AG, where he held various executive-level positions including General Manager for the Transrapid Propulsion and Power Supply, President of Siemens Transportation Systems China, the first Chief Executive Officer of Siemens Africa and the Chief Executive Officer of Industrial Solutions, Customer Services and Large Drives in Germany from May 2005 to December 2015. Mr. Hoke currently serves on the Board of Directors of SolarEdge Technologies, Inc. He holds a degree in Mechanical Engineering from the Technical University of Brunswick, Germany and is an Alumni of the Young Global Leader Program of the World Economic Forum.

Stephen Messer has served as one of our directors since August 2021. Mr. Messer served as one of the directors of Legacy Spire from May 2014 through the Closing. Mr. Messer has served as Member at Zephir Worldwide LLC, a venture capital firm, since 2012. Mr. Messer has served as Vice Chairman and Co-Founder at Collective[i], a foundation AI model for Commerce, since January 2008 and as President and Co-Founder of World Evolved Services, LLC, a venture capital firm, since January 2006. Prior to this, Mr. Messer served as Chief Executive Officer and Co-Founder at LinkShare Corporation, an affiliate marketing service company acquired by Rakuten, Inc., from 1996 to 2005. Mr. Messer currently serves on the board of directors of several private companies and on the advisory boards for multiple venture capital firms. Mr. Messer holds a B.A. in Government and Law, History from Lafayette College and a J.D. from Benjamin N. Cardozo School of Law, Yeshiva University.

William D. Porteous has served as one of our directors since August 2021. Mr. Porteous served as one of the directors of Legacy Spire from May 2014 through the Closing. Since August 2000, Mr. Porteous has been with RRE Ventures, LLC, a venture capital firm, where he currently serves as a General Partner and the firm’s Chief Operating Officer. Over the course of his career, Mr. Porteous has served on the board of directors of more than 20 companies. In addition to Spire, Mr. Porteous currently serves as Chairman of the Board of Directors of BlackSky Technology Inc., (NYSE: BKSY) as well as Nanit, Paperless Post, Pattern, Pilot Fiber, Ursa, and Wave. Mr. Porteous has also served as Co-Chairman and Founder at the Dockery Farms Foundation, a non-profit dedicated to preserving the historic property and heritage of Dockery Farms. Mr. Porteous served as an Adjunct Professor at Columbia University from January 2003 to May 2018. Mr. Porteous holds a B.A. in English from Stanford University, an M.B.A. from the Harvard Business School, and an M.Sc. in Economics and Industrial Relations from the London School of Economics and Political Science.

William D. Porteous has served as one of our directors since August 2021. Mr. Porteous served as one of the directors of Legacy Spire from May 2014 through the Closing. Since August 2000, Mr. Porteous has been with RRE Ventures, LLC, a venture capital firm, where he currently serves as a General Partner and the firm’s Chief Operating Officer. Over the course of his career, Mr. Porteous has served on the board of directors of more than 20 companies. In addition to Spire, Mr. Porteous currently serves as Chairman of the Board of Directors of BlackSky Technology Inc., (NYSE: BKSY) as well as Nanit, Paperless Post, Pattern, Pilot Fiber, Ursa, and Wave. Mr. Porteous has also served as Co-Chairman and Founder at the Dockery Farms Foundation, a non-profit dedicated to preserving the historic property and heritage of Dockery Farms. Mr. Porteous served as an Adjunct Professor at Columbia University from January 2003 to May 2018. Mr. Porteous holds a B.A. in English from Stanford University, an M.B.A. from the Harvard Business School, and an M.Sc. in Economics and Industrial Relations from the London School of Economics and Political Science.

Stephen Messer has served as one of our directors since August 2021. Mr. Messer served as one of the directors of Legacy Spire from May 2014 through the Closing. Mr. Messer has served as Member at Zephir Worldwide LLC, a venture capital firm, since 2012. Mr. Messer has served as Vice Chairman and Co-Founder at Collective[i], a foundation AI model for Commerce, since January 2008 and as President and Co-Founder of World Evolved Services, LLC, a venture capital firm, since January 2006. Prior to this, Mr. Messer served as Chief Executive Officer and Co-Founder at LinkShare Corporation, an affiliate marketing service company acquired by Rakuten, Inc., from 1996 to 2005. Mr. Messer currently serves on the board of directors of several private companies and on the advisory boards for multiple venture capital firms. Mr. Messer holds a B.A. in Government and Law, History from Lafayette College and a J.D. from Benjamin N. Cardozo School of Law, Yeshiva University.