Limbach LMB

Michael M. McCann has served as the President and Chief Executive Officer and a Director of the Company since March 2023. Prior to his appointment as President and Chief Executive Officer and a Director of the Company, Mr. McCann served as the Company's Executive Vice President and Chief Operating Officer since November 2019, after having been appointed Co-Chief Operating Officer, effective January 2019. Mr. McCann joined the Company in 2010 as Vice President and Branch Manager of Harper Limbach's Tampa business unit. After growing the Tampa business for almost three years, Mr. McCann became President of Harper Limbach. His duties included all aspects of the Company's construction operations, with primary responsibilities including oversight of risk management, sharing of best practices, and development of operational talent. Mr. McCann has a Bachelor of Science in Mechanical Engineering from Worcester Polytechnic Institute and a Master of Business Administration degree from Drexel University.

Jayme L. Brooks. Ms. Brooks has served as the Executive Vice President and Chief Financial Officer of the Company since October 2019. Ms. Brooks served as Executive Vice President and Chief Financial Officer of Capstone Turbine Corporation, a publicly traded manufacturer of microturbine energy systems, from April 2019 until September 2019, and as its Chief Financial Officer and Chief Accounting Officer from April 2015 to April 2019. Previously, Ms. Books also served as Vice President of Financial Planning and Analysis, Interim Chief Accounting Officer and Director of Financial Reporting of Capstone Turbine Corporation. Previously, she served as Vice President and Controller of Computer Patent Annuities North America LLC, a company providing solutions for intellectual property management, including renewal services, software tools and portfolio management. Ms. Brooks holds a Bachelor of Arts degree in Business Economics from the University of California at Santa Barbara and a Master of Business Administration degree from the Fuqua School of Business at Duke University. Ms. Brooks is a Certified Public Accountant (active) licensed in California.

Jay A. Sharp. Mr. Sharp has served as the Company's Executive Vice President, Sales since January 2026. Prior to this appointment, Mr. Sharp served as the Regional President of the Northeast and Midwest regions of the Company since January 2025. Previously, Mr. Sharp served as the President of the following entities: Limbach Company LLC, Limbach Company LP, Jake Marshall, LLC and Limbach Facility & Project Solutions LLC since January 2023. Prior to his appointment as President to certain of the Company's entities, Mr. Sharp served as the Company's Executive Vice President, Regional Manager since March 2020, in which he had oversight for the Midwest region of the Company. Mr. Sharp also ran the Company's Ohio business unit from August 2005 to March 2020 and served in various capacities at Limbach from 1990 to 2006. Mr. Sharp received his bachelor's degree in 1988 from Messiah College through a partnership with Temple University in Philadelphia PA, and completed Columbia University's Senior Executive Management program in 2013. Mr. Sharp has played an active role in the construction industry serving on the Board of Directors of MCACO and has been a Labor Management Trustee for Local 24 from 2011 through 2021.

Nicholas S. Angerosa. Mr. Angerosa has served as the Company's Executive Vice President, National Customer Solutions since January 2026. Prior to his appointment, Mr. Angerosa served as the Regional President of the Southeast region of the Company since January 2025. Previously, Mr. Angerosa served as President of Harper Limbach since July 2020, which includes the following entities: Harper Limbach LLC and Harper Limbach Construction LLC. Prior to his appointment as President of Harper Limbach, Mr. Angerosa served as the Company's Senior Vice President and Branch Manager from May 2018 to July 2020, in which he oversaw the Tampa business unit. Before joining Harper Limbach, Mr. Angerosa worked as a Project Manager and Division Manager with The Poole & Kent Company of Florida, a specialty mechanical and general contractor, from October 1996 to May 2012.

Joshua S. Horowitz has served as Chairman of the Board since June 2024 and has been a Director since March 2020. Mr. Horowitz is an experienced investor, board leader and capital allocator with more than 20 years of experience investing in and advising public and private companies. Since January 2012, he has served as a portfolio manager and Managing Director at various Palm entities, initially with Palm Ventures LLC and currently with Palm Management (US) LLC, where he manages the Palm Global Small Cap Master Fund. In this role, he has led investments across multiple sectors, with a focus on long-term value creation, disciplined capital allocation, and strategic transformation. Earlier in his career, Mr. Horowitz served as Director of Research at Berggruen Holdings, a multi-billion-dollar family office, and as a research analyst at Crossway Partners LP, a value-oriented investment partnership. He previously served as a Director of The Lincoln General Insurance Company from October 2011 to September 2015; 1347 Capital Corp. (Nasdaq: TFSC) from July 2014 to July 2016; and 1347 Property Insurance Holdings, Inc. (Nasdaq: PIH) from April 2015 to April 2018. From June 2018 until its sale in January 2019, he served as Interim Chairman of the Board of Directors of Birner Dental Management Services, Inc. (OTC: BDMS), at the time the only publicly traded dental service organization in the United States, with 67 offices and more than 500 employees. He also served as a member of the Board of Directors of NeuroMetrix, Inc. (Nasdaq: NURO), where in 2025 he played a leadership role in the strategic process that resulted in the successful sale of NeuroMetrix to electroCore, Inc. (Nasdaq: ECOR). Since December 2023, he has served as Chairman of the Board of BK Technologies Corporation (NYSE: BKTI). He also currently serves on the Boards of Barnwell Industries, Inc. (NYSE: BRN) and Kingsway Financial Services Inc. (NYSE: KFS). Mr. Horowitz holds a B.S. in Management, magna cum laude, from Binghamton University and also studied at the Bath School of Management in the United Kingdom. He has earned a National Association of Corporate Directors (NACD) CERT Certificate in Cyber-Risk Oversight, issued by Carnegie Mellon University.

Laurel J. Krzeminski has served as a Director of the Company since June 2018. Ms. Krzeminski previously served as the chief financial officer of Granite Construction Incorporated (NYSE: GVA) (Granite) from November 2010 until her retirement in July 2018. During her tenure at Granite, she also served as executive vice president since December 2015, senior vice president from January 2013 to December 2015, vice president from July 2008 to December 2012, interim chief financial officer from June 2010 to October 2010 and corporate controller from July 2008 to May 2010. From 1993 to 2007, Ms. Krzeminski held various corporate and operational finance positions with The Gillette Company (Gillette) (acquired by the Procter & Gamble Company in 2005), including finance director for the Duracell and Braun North American business units, and director of Gillette's Sarbanes-Oxley Section 404 compliance program and as Gillette's director of corporate financial reporting. Ms. Krzeminski's experience also includes several years in public accounting with an international accounting firm. Ms. Krzeminski is currently a member of the board of directors of Terracon. She received a B.S. in Business Administration-Accounting from San Diego State University.

Linda G. Alvarado has served as a Director of the Company since August 2021. Ms. Alvarado brings extensive experience in the construction industry, most notably as a founder, President and CEO of Alvarado Construction, Inc., a commercial general contractor, development, design/build, and construction management company in the United States and internationally. Ms. Alvarado is also an owner of the Colorado Rockies Major League Baseball Club and serves as President of Palo Alto, Inc., and the Alvarado Restaurant Entities, which own and operate YUM! Brands restaurants in multiple states. Previously, Ms. Alvarado served as a director of several public companies across diverse industries, including 3M, Cypress AMAX Minerals, Lennox International, Pitney Bowes, Pepsi Bottling Group, Qwest Communications International, and the United Banks of Colorado. In addition to her professional experience, Ms. Alvarado has received numerous recognitions for her leadership and contributions to business and the community. She was named by Hispanic Business Magazine and Latino Leaders Magazine as One of the Most Influential Hispanics in America and was voted by viewers as The Most Inspiring Latino in America for the American Latino Television Awards. She was also featured in the 2016 and 2017 Georgia Pacific Company BRAWNY Media Campaign Celebrating Woman's History Month. Ms. Alvarado, along with U.S. Attorney General Janet Reno and Maya Angelou, was presented the Sara Lee Corporation Frontrunner award for exemplary achievements and leadership. Ms. Alvarado was a founding member and past Chairman of the Denver Hispanic Chamber of Commerce and a Presidential Appointee as a Commissioner of the White House Initiative for Hispanic Excellence in Education. She is actively involved in supporting numerous charitable organizations and is also one of the founding trustees of the Colorado Latino Community Foundation, the Rose Community Foundation, and the Taco Bell Foundation.

Michael F. McNally has served as a Director of the Company since September 2017. Mr. McNally has also served as a director of Granite since 2016 and is the current independent chair of the board of directors. Mr. McNally retired in December 2014 as president and CEO of Skanska USA Inc. (Skanska), one of the largest construction companies in the United States and a subsidiary of one of the world's largest construction companies, Skanska AB, a position he had held since 2008. Prior to his tenure at Skanska, Mr. McNally held various management positions over a 38-year career with Fluor, Marshall Contractors, Mobil Oil and J. Ray McDermott. From 2016 to 2019 he was chair of the US Green Building Council and from 2020 to 2023 he was vice chair of the University of Rhode Island board of trustees. Mr. McNally holds a Bachelor of Science degree in Civil Engineering from the University of Notre Dame and a Master of Business Administration degree from the University of Rhode Island. He is a NACD Board Leadership Fellow, NACD Director Certified and holds a NACD CERT Certificate in Cyber-Security Oversight, issued by Carnegie Mellon University.

David R. Gaboury joined the Board in June 2024 following his tenure as board chair, CEO and president of Terracon Consultants, Inc. (Terracon), a 5,000+ employee-owned geo-engineering company. Mr. Gaboury joined Terracon in 1997, becoming CEO in 2002, and substantially grew the firm's annual revenue from approximately $75 million to $750 million during his tenure. Prior to joining Terracon, he spent 15 years with Woodward Clyde Group Inc. where he served as COO and president of Woodward Clyde Consultants during the final five years of his tenure. Mr. Gaboury currently holds the position of chair emeritus at Terracon. He also serves as a member of the board of directors of Smith Seckman Reid, Inc. (lead director), RS&H, Inc. (board chair) and Weston Solutions, Inc. Further, he serves as a board member of a private company named Hall's Culligan, a 1,000-person water distribution company. Mr. Gaboury's previous leadership roles include chair of the board of directors of Olathe Medical Center, trustee chair of Olathe Medical Services, board member of the Construction Industry Round Table, and president of ASFE/The Geoprofessional Business Association. In 2013, Mr. Gaboury was selected as an Ernst & Young Entrepreneur of the Year award winner. Mr. Gaboury received a Bachelor of Science degree in Civil Engineering from the University of Massachusetts Amherst and a Master of Science degree in Civil Engineering from the Massachusetts Institute of Technology. He is also a graduate of the Harvard Business School Advanced Management Program and is a licensed professional engineer.

On May 18, 2026, Limbach Holdings, Inc. announced that it has appointed Michael J. Reed to serve as the Company's Executive Vice President and Chief Operating Officer, effective as of May 18, 2026. Mr. Reed, 56, joined the Company in 2019 as Vice President, Branch Manager. He subsequently served as Vice President of Operational Risk Management, where he helped strengthen operational processes and risk management initiatives across the organization. In 2024, Mr. Reed was promoted to Senior Vice President, Integrations Leader, where he oversaw the successful integration of acquisitions in support of the Company's acquisition and expansion strategy. In May 2025, Mr. Reed was promoted to Senior Vice President, Midwest Regional Manager, where he oversaw performance and strategic growth initiatives across the Midwest region. Prior to joining the Company, Mr. Reed served in various operational and leadership roles within the mechanical services and construction industry.

Effective as of January 1, 2026, Limbach Holdings, Inc. appointed Terence P. Dugan to serve as a director of the Company, to fill a newly created seat on the Board. Mr. Dugan brings more than four decades of operating, strategic, and transaction experience in the HVAC and building systems solutions industry, directly aligned with the Company's current focus on profitable growth, cash flow generation, and long-term shareholder value creation. Throughout his career, he has served a broad national customer base including mission critical building owners, MEP contractors, and construction engineers, providing him with a deep understanding of the end-markets that drive sustainable demand and recurring revenue. Mr. Dugan held senior leadership roles at Trane Technologies plc (Trane) and its predecessor, Ingersoll Rand, where he led commercial and strategic initiatives serving owner direct customers across North America. Most recently, he served as Vice President and North America Commercial Business Leader, as well as Vice President of Business Development for M&A. In these roles, he was directly responsible for driving organic growth, evaluating and executing strategic acquisitions, and strengthening Trane's competitive positioning, contributing to sustained revenue expansion and margin improvement. From 2018 to 2024, Mr. Dugan served on the Joint Venture board of Mitsubishi Electric Trane HVAC U.S. as Ingersoll Rand's and Trane Technologies' Lead Director, and was a member of its compensation committee, where he helped align executive incentives with performance and profitability. Today, Mr. Dugan advises small and mid-sized HVAC businesses on growth strategy, operational execution, and value creation, and consults with private equity firms and investment banking advisors focused on HVAC manufacturing, mechanical systems, and building services. Insight into both operating excellence and capital allocation makes him particularly well-suited to support the Company's strategic priorities and enhance shareholder returns. Mr. Dugan holds a bachelor's degree in mechanical engineering from Vanderbilt University and an MBA from the Ross School of Business at the University of Michigan.