 IRVINE, Calif.--BUSINESS WIRE--Montrose Environmental Group, Inc. the Company or Montrose NYSE: MEG announced today that certain of the Companys stockholders, including funds managed by Oaktree Capital Management, L.P. the Selling Stockholders, intend to offer for sale in an underwritten secondary offering 4,920,052 shares of the Companys common stock. The Selling Stockholders will also grant the underwriters a 30-day option to purchase up to an additional 738,012 shares of comm 