An Aetna spokeswoman declined to comment on the lawsuit.
U.S. District Judge John D. Bates, who blocked Aetna's merger with Humana in January, first made the accusation that Aetna used its participation on the exchanges as a form of leverage to close its merger.
He claimed in his written opinion that Aetna leadership made good on repeated threats to the U.S. Justice Department and then-HHS Secretary Sylvia Mathews Burwell to curtail its participation in the exchanges if the merger were blocked. The shareholder lawsuit filed this week cited Bates' opinion as proof that Aetna misrepresented its reasons for exiting the ACA marketplaces.
In August 2016, Aetna said it would pull out of exchanges in 11 states and remain in just four states, forcing hundreds of thousands of plan members to find a new insurer. The insurer announced the decision just a month after the Justice Department sued to block its merger with insurer Humana. Aetna leadership said the move was purely a "business decision" made because the company was losing money on the plans.
At the time, Aetna's retreat came as a surprise. The company just months before told investors it was on track to break even on the exchanges in 2016. But during the second quarter of 2016, Aetna announced it had lost $200 million from the plans and said it expected to incur a pre-tax loss of $350 million for the year.
Bates' opinion laid out transcripts of emails, phone calls and depositions that he said showed Aetna's decision was not based on financial losses.
For example, Aetna CEO Mark Bertolini told Burwell over the phone in June 2016 that were she to be contacted by the Justice Department regarding the merger, he would "appreciate a good word for all that we've done with you," according to the opinion. In July, Bertolini wrote a letter to the Justice Department stating he would immediately reduce Aetna's exchange footprint in 2017 and withdraw from at least five states, or possibly the public exchange business altogether, if the Justice Department sought to block the deal, court documents showed.
"The inescapable conclusion from these contemporaneous emails and documents is that the Aetna team making recommendations to Bertolini did not view withdrawing from the 17 complaint counties as a business decision," Bates' opinion stated.
An edited version of this story can also be found in Modern Healthcare's July 31 print edition.