Limbach Holdings, Inc.

PROPOSAL 1

ELECTION OF DIRECTORS

Our Board currently consists of seven directors and is divided into three classes. The term of each directorship is three years, so that one class of directors is elected each year. All directors are elected for three-year terms and until their successors are elected and qualified, or, if sooner, until the director’s death, resignation or removal.

At the virtual Annual Meeting, our stockholders will vote to elect three current Class A directors, Joshua S. Horowitz, Linda G. Alvarado and Terence P. Dugan. The Class A directors will have a term expiring at the 2029 Annual Meeting of Stockholders. Information concerning each nominee for director is set forth below under “Directors and Executive Officers.”

Directors are elected by a plurality of the votes cast. The three nominees for director receiving the most votes cast “FOR” such director (from the holders of shares present virtually or represented by proxy and entitled to vote on the election of directors) will be elected. Shares represented by executed proxies will be voted, if authority to do so is not withheld, for the election of the three nominees named below. Broker non-votes, if applicable, will have no effect on the outcome of this proposal. If any nominee becomes unavailable for election as a result of an unexpected occurrence, your shares will be voted for the election of a substitute nominee proposed by us. Each person nominated for election has agreed to serve if elected. Our management has no reason to believe that any nominee will be unable to serve.

OUR BOARD UNANIMOUSLY RECOMMENDS A VOTE “FOR” THE ELECTION OF EACH OF JOSHUA S. HOROWITZ, LINDA G. ALVARADO AND TERENCE P. DUGAN AS CLASS A MEMBERS OF OUR BOARD.