Equity Commonwealth and Monmouth Real Estate Investment Corporation have entered into a definitive merger agreement by which Equity Commonwealth will acquire Monmouth in an all-stock transaction, valued at approximately $3.4 billion, including the assumption of debt. The combined company is expected to have a pro forma equity market capitalization of approximately $5.5 billion.

Monmouth’s portfolio is comprised of 120 properties totaling 24.5 million square feet. Equity Commonwealth and Monmouth shareholders are expected to own approximately 65% and 35%, respectively, of the pro forma company following the close of the transaction.

“The transaction provides Equity Commonwealth with a high-quality, net-leased industrial business with stable cash flows while preserving EQC’s balance sheet capacity for future acquisitions,” said Sam Zell, chairman of the board of Equity Commonwealth.

“Monmouth provides an attractive and scalable platform,” said David Helfand, president, chief executive officer and trustee of Equity Commonwealth. “With significant cash and balance sheet capacity, we have the ability to grow the platform and create long-term value for shareholders.”

“Following a strategic alternatives process, our Board unanimously determined that the merger with Equity Commonwealth is the best outcome to maximize value for Monmouth stockholders,” said Michael P. Landy, President and CEO of Monmouth. “Our stockholders will benefit from Equity Commonwealth’s preeminent leadership team, which has an exceptional track record of delivering shareholder value, its strong balance sheet and its focused strategy to build on Monmouth’s over 50 years of success creating a market leading industrial REIT.”

Goldman Sachs & Co. LLC is acting as financial advisor and Fried, Frank, Harris, Shriver and Jacobson LLP is serving as legal advisor to Equity Commonwealth. J.P. Morgan Securities LLC and CS Capital Advisors LLC are acting as financial advisors and Stroock & Stroock & Lavan LLP is serving as legal advisor to Monmouth.