Safety Insurance Group merger with Mapfre advances as HSR waiting period ends

Safety Insurance Group, Inc. announced on Monday that the Hart-Scott-Rodino Antitrust Improvements Act waiting period for its proposed merger with MAPFRE U.S.A. Corp. has ended. This clearance is a crucial step towards finalizing the acquisition. The company's shares are currently trading at $103.51, close to its 52-week high of $103.80, indicating investor confidence in the deal.

Over the last six months, the stock has risen by 44%, driven by the progress of the merger. The merger agreement, initially disclosed on July 23, 2026, involves Safety Insurance Group acquiring MAPFRE U.S.A. Corp. and Splash Merger Sub, Inc., a subsidiary of Mapfre. Following the agreement, Safety Insurance Group will operate as a wholly owned subsidiary of MAPFRE.

The transaction is valued at $1.52 billion and provides a dividend yield of 3.56%. Despite the merger's completion, other regulatory clearances must still be obtained before the transaction can be finalized. A definitive proxy statement outlining the deal was filed with the Securities and Exchange Commission on September 14, 2026.

Safety Insurance Group also recently amended its revolving credit agreement with Citizens Bank, N.A. and other lenders, increasing the aggregate amount from $50 million to $100 million, with an extended maturity date of June 9, 2031. This financial move underscores the company's strategic financial planning. The information presented in this article is derived from a press release included in Safety Insurance Group's SEC filing.