York Space Systems YSS

On August 5, 2026, York Space Systems Inc. announced the appointment of Brian D. Frantz, its Chief Accounting Officer, as Interim Chief Financial Officer, effective August 14, 2026. Mr. Frantz has served as our Chief Accounting Officer since September 2025. From April 2017 to February 2025, Mr. Frantz served as Senior Vice President, Chief Accounting Officer and Treasurer of Summit Materials, Inc., a public company specializing in the production of aggregates and cement. Mr. Frantz served as Interim Chief Financial Officer of Intrepid Potash, Inc., a public company focused on delivering potassium, magnesium, sulfur, salt, and water products, from August 2014 to June 2015. He also served as Intrepid Potash, Inc.'s Controller and Chief Accounting Officer from July 2010 to February 2012, Vice President-Finance from February 2012 to August 2014 and Senior Vice President and Chief Accounting Officer from July 2015 to April 2017. From October 2008 to July 2010, Mr. Frantz served as Chief Financial Officer of Honnen Equipment Company, a private company specializing in selling and leasing construction equipment. Prior to that, Mr. Frantz served as Chief Financial Officer of DWF Wholesale Florists Company, a national wholesale florist and held various positions at RE/MAX International, Inc., a private company engaged in the franchising of real estate brokerage businesses, most recently as Senior Vice President and Chief Financial Officer. Mr. Frantz began his career with Arthur Andersen LLP.

On April 10, 2026, the Board of Directors of York Space Systems Inc appointed Janine A. Davidson as a member of the Board, effective immediately. Dr. Davidson, age 59, has served as president of the Metropolitan State University of Denver since July of 2017. From March 2016 through January 2017, she served as the 32nd undersecretary of the United States Navy. Dr. Davidson's prior professional experience includes: Senior Fellow, Defense Policy at the Council on Foreign Relations from January 2014 through March 2016, adjunct Professor at Georgetown University from January 2015 through May 2015, Assistant Professor at George Mason University from August 2012 to January 2014, and various civilian policy positions in the Department of Defense from April 2009 through March 2012. Dr. Davidson began her career as an Air Force Officer, global cargo pilot and aviation and aerobatics flight instructor with the U.S. Air Force Academy. Currently, Dr. Davidson serves on the board of directors of UMB Financial Corporation (Nasdaq: UMBF), a financial investment management company that provides services for individuals and institutions. Dr. Davidson also serves on the Kansas City Federal Reserve's Advisory Counsel and is a fellow in the National Academy of Public Administration and a life member of the Council on Foreign Relations. Dr. Davidson earned a Bachelor of Science in Architectural Engineering at the University of Colorado, Boulder, and a Master of Arts and Ph.D. in international studies from the University of South Carolina.

Andrew Boyd has served as our director since the completion of our IPO. Since March 2025, Mr. Boyd has been an Operating Partner at AE Industrial Partners. Mr. Boyd currently serves as a director and the Chief Executive Officer of REDLattice, Inc. and on the board of directors of Censys, Inc. He also currently holds positions as a CBS News Contributor, a consultant for Faze 2 Strategy, a Senior Advisor for Trellix and a Senior Advisor for Beacon Global Strategies. Mr. Boyd was an Adjunct Professor at John Hopkins University from September 2023 until December 2024. Prior to that, Mr. Boyd spent thirteen years at the U.S. Central Intelligence Agency in various roles, including Director of the Center for Cyber Intelligence from January 2020 to July 2023, Chief of Operations in the Counterterrorism Mission Center from August 2018 to January 2020, and Chief of Station from June 2017 to August 2018. Before that, Mr. Boyd spent over eleven years as a Foreign Service Officer for the U.S. Department of State and five years as an Intelligence Officer for the U.S. Air Force. Mr. Boyd graduated with a B.S. in history from the United States Air Force Academy, and received a Master of Arts in International Relations and Affairs from the Catholic University of America and a Master of Science in Strategic Policy from the National War College.

Kirk Konert has served as our director since the completion of our IPO. Since December 2023, Mr. Konert has been a Managing Partner at AE Industrial Partners. Prior to that, Mr. Konert was a Partner at AE Industrial Partners from October 2019 to December 2023, and a Principal from August 2014 to October 2019. Mr. Konert currently serves on the board of directors of BigBear.ai (NYSE: BBAI), Calca Solutions, Redwire Corporation (NYSE: RDW), Firefly Aerospace Inc. (NASDAQ: FLY), and ThayerMahan. Mr. Konert was a Senior Associate at Sun Capital Partners from July 2011 to July 2014 and was an analyst with Wells Fargo Securities' Industrial Group from June 2009 to June 2011. Mr. Konert earned a BA in Economics at Davidson College.

Tyler Letarte has served as our director since the completion of our IPO. Since December 2023, Mr. Letarte has been a Principal at AE Industrial Partners. Prior to that, Mr. Letarte was a Vice President at AE Industrial Partners from October 2020 to December 2023, a Senior Associate from July 2019 to October 2020, and an Associate from July 2018 to July 2019. Prior to that, Mr. Letarte was an Investment Banking Associate from January 2016 to June 2018 at Moelis & Company, and an Investment Banking Analyst from April 2014 to January 2016. Mr. Letarte was also an Investment Banking Analyst at J.P. Morgan from June 2013 to April 2014. Mr. Letarte earned a BBA in Finance from Villanova University.

Devjyoti Rudra has served as our Chief Supply Chain Officer since September 2023. Prior to that, Mr. Rudra was a Vice President at AE Industrial Partners from November 2022 to September 2023. Mr. Rudra also previously served as Chief Executive Officer at Sydrogen Energy, a manufacturer of fuel cell components, from July 2021 to May 2022, and as a Managing Director at GE Aviation (NYSE: GE) from April 2015 to July 2021. Mr. Rudra also served in various roles at United Technologies from July 2000 to April 2015. Mr. Rudra earned a BE in Mechanical Engineering from the University of Delhi, an MSE in Aerospace Engineering and an MBA in General Management from The University of Michigan.

Dirk Wallinger has served as our Chief Executive Officer and President since founding the Company in January 2012 and as our director since the completion of our IPO. Prior to founding the Company, Mr. Wallinger strategized, designed and deployed numerous elements in the space vertical at Orbital Sciences, General Dynamics, Goodrich Corp. and Lockheed Martin (NYSE: LMT). Mr. Wallinger also serves on the Advisory Board of the Colorado Space Business Roundtable, the Advisory Board of the SmallSat Alliance, and as a Mentor for Starburst Aerospace Accelerator. Mr. Wallinger earned a BS, Summa Cum Laude, in Mechanical Engineering from The University of Arizona.

Monica Palko has served as our Chief Legal and Administrative Officer since August 2021. Prior to that, Ms. Palko served as the Vice President and General Counsel, Space at Lockheed Martin (NYSE: LMT) from April 2018 to September 2020. Ms. Palko also previously served as Deputy Chief Counsel, Platforms & Services at BAE Systems (OTCMKTS: BAESY) from January 2013 to April 2018, as Vice President - Corporate Responsibility at ITT Defense & Information Solutions from March 2010 to January 2012, and as a Trial Attorney at the U.S. Department of Justice from October 1998 to May 2003. Ms. Palko earned a JD from The George Washington University of Law School and a BA in English from Hendrix College.

Tamra Erwin has served as our director since the completion of our IPO. Ms. Erwin has been a member of the boards of directors of Xerox Holding Corporation (NASDAQ: XRX) since April 2024, Skylo Technologies since March 2024, F5, Inc. (NASDAQ: FFIV) since October 2023, and Deere & Company (NYSE: DE) since April 2020. Additionally, Ms. Erwin is also a member of the advisory council of Dublin-based Aptiv (NYSE: APTV), an advisor to the CEO of Cohesity, a Senior Fellow of Mission Possible Partnership, and a Champion of Journey to Lead, a nonprofit that works to advance diversity at the top of the private sector. Between June 2023 and April 2025, Ms. Erwin was an operating partner with UK-based infrastructure investment group Digital Gravity. Prior to that, Ms. Erwin held various positions at Verizon Communications, Inc. (NYSE: VZ), including as Executive Vice President and Chief Executive Officer of Verizon Business from April 2019 to September 2022, Executive Vice President and Chief Operating Officer of Verizon Wireless from August 2016 to March 2019, and Senior Vice President and Group President, Wireline P&L Operations from February 2015 to August 2016. Ms. Erwin completed the Stanford Executive Program in Business Administration and Management at the Stanford University Graduate School of Business and holds a degree in Business from Pacific Union College.

General (RET) James McConville has served as our director since the completion of our IPO. Since September 2023, General McConville has been an Operating Partner at AE Industrial Partners, and has served on the board of Redwire Corporation (NYSE: RDW) since October 2025 and on the board of BETA Technologies, Inc. (NYSE: BETA) since October 2024. From August 2019 through August 2023, General McConville served as the 40th Chief of Staff of the United States Army, leading an organization of 1.2 million personnel, an annual budget of $185 billion and operations in over 140 countries around the globe. He led combat organizations from the platoon to the division level and was the longest serving commander of the famed 101st Airborne Division (AASLT). Additionally, General McConville is a Senior Fellow at the Belfer Center at Harvard University and a member of the Georgia Tech Research Institute External Advisory Council. General McConville earned a BS from the United States Military Academy at West Point and a Master of Science in Aerospace, Aeronautical and Astronautical Engineering from the Georgia Institute of Technology.

Reggie Brothers has served as our director since the completion of our IPO. Dr. Brothers has served as a director of Leonardo DRS, Inc. (NASDAQ: DRS) since January 2023 and member of its Audit Committee, a Principal of MIT Lincoln Laboratory since July 2023 and an Operating Partner of AE Industrial Partners since October of 2022. Previously, Dr. Brothers served as CEO and director of BigBear.ai (NYSE: BBAI) from June 2020 to October 2022, Chief Technology Officer at Peraton Corporation from January 2018 to June 2020, and Principal at The Chertoff Group from January 2017 to January 2018. From April 2014 to February 2017, Dr. Brothers served as the Under Secretary for Science and Technology at the Department of Homeland Security. Dr. Brothers received an undergraduate degree from Tufts University, a Master's degree from Southern Methodist University and a PhD from Massachusetts Institute of Technology.