Mark Cuban Cuban said he was talking to Humana about “putting together direct-to-employer programs” that would bypass traditional layers in the drug supply chain.

The drugmakers will offer Zepbound and Wegovy to companies starting Jan. 1 through Waltz Health, a firm that helps employers purchase cheaper medications.

Little is known about Quallent Pharmaceuticals, a Cigna unit, which is based in the Cayman Islands and lists dozens of drugs on its website.

The company’s shares closed down 17% Thursday, their worst one-day drop since 2008.

The plan to eventually phase out rebates more broadly portends a seismic shift in the flow of billions of dollars among drugmakers, insurers and employers.

A UnitedHealth Group Inc. shareholder has filed a proposal to require an independent board chair distinct from the chief executive officer, roles that were combined when Stephen Hemsley returned to lead the company this year.

The main lobbying group that represents so-called pharmacy benefit managers, the Pharmaceutical Care Management Association, has drafted proposals to bring to the Centers for Medicare and Medicaid Services.

The US Justice Department’s criminal division is digging into UnitedHealth Group Inc.’s prescription management services as well as how it reimburses its own doctors under an ongoing probe into the firm’s operations, according to people familiar with the matter.