Exhibit 99.1 Contact Keith E. Pratt EVP & Chief Financial Officer 925-606-9200 PRESS RELEASE FOR RELEASE February 21, 2024 McGrath Announces Results for Fourth Quarter 2023 and Announces 33rd Annual Dividend Increase Livermore, CA - February 21, 2024 – McGrath RentCorp (“McGrath” or the “Company”) (Nasdaq: MGRC), a leading business-to-business rental company in North America, today announced total revenues from continuing operations for the quarter ended December 31, 2023 of $221.6 million, an increase of 2 ...