McGrath RentCorp (NASDAQ:MGRC) shares are trading lower on Wednesday after the company announced the termination of its merger with WillScot Holdings Corporation (NASDAQ:WSC). In January, WillScot Mobile Mini inked a deal to acquire McGrath RentCorp for $3.8 billion. That time, McGrath’s shareholders were offered for each of their shares either $123.00 in cash or 2.8211 shares of WillScot Mobile Mini common shares. Today, WillScot and McGrath mutually agreed to terminate the transaction after jointly determining that there was no commercially viable way to meet the necessary regulatory require…