Cigna Corp. is buying HealthSpring for $3.8 billion, as the global health insurer expands its reach into the senior and Medicare markets.

The Virginia State Corporate Commission (SCC) approved a rehabilitation plan for Roanoke-based Shenandoah Life Insurance Co., which includes its acquisition by United Prosperity Life.

The Stanton Taylor Agency is affiliating with Hampton Roads, Va.-based TowneBank insurance agency, as the company continues to expand into Eastern North Carolina.

Guggenheim Partners, a diversified financial services firm, is buying EquiTrust Life Insurance Co. from its parent, FBL Financial Group.

The Allstate Corp. has closed its acquisition of Esurance and Answer Financial from White Mountains Insurance Group for about $1 billion.

Arthur J. Gallagher & Co. is acquiring S. A. Freerks & Associates, a St. Louis-based managing general agent and wholesale insurance broker.

A Hartford, Conn.-based health insurer announced the completion of two previously announced acquisitions of a Medicare supplement business and an independent account-based health plan administrator.

The Hilb Group, a Glen Allen, Va.-based middle-market insurance brokerage, is expanding its New York presence, where it will focus on selling disability and life insurance products for the medical and dental communities.

Pennsylvania-based Harleysville Mutual Insurance Co. and Harleysville Group are merging with Nationwide Mutual Insurance Co.

Selective Insurance Group is buying an excess and surplus lines subsidiary of Montpelier Re U.S. Holdings to provide it access to a nationally licensed platform that will improve its efficiency.