Sard Verbinnen & Co is handling media for Aetna's $37B deal announced today to acquire Humana of Louisville.

The transaction forges the second largest managed care company in the US and the top handler of patients in the Medicare Advantage program.

The combined company chalks up $115B in annual revenues, of which 56 percent flows from government-sponsored programs.

Shareholders of the Hartford insurer will control 74 percent of the fortified company.

Aetna CEO Mark Bertolini has pledged a commitment to Louisville, where Humana was founded about 50 years, pledging to base the Medicare, Medicaid and TRICARE businesses in the Kentucky city.

SVB's Meghan Gavigan and Patrick Scanlan work the media for the merger, while Aetna's Tom Cowhey deals with the investment community.

Humana relies on Joele Frank's Barrett Golden, Michael Freitag and Joe Snodgrass for media support.