June 28, 2011: Highmark and West Penn Allegheny Health System jointly announce plans to affiliate, with Highmark promising to invest $475 million in the financially ailing health system over four years, including a $50 million upfront payment.
Nov. 1, 2011: Highmark and WPAHS sign an affiliation agreement that immediately infuses an additional $100 million into the health system. The agreement calls for reopening the West Penn Hospital emergency department in Bloomfield, closed a year earlier as part of restructuring, and upgrading Forbes Regional Hospital in Monroeville.
Dec. 30, 2011: Auditing firm KPMG releases a report raising doubts about West Penn Allegheny's "ability to continue as a going concern," noting it had $51.8 million in operating revenue losses in the fiscal year ending June 30, 2011. While acknowledging Highmark's plans to acquire the region's second-largest health system, KPMG's report concluded that "there is no assurance that management's plans, as described, can be effectively implemented."
April 1, 2012: Highmark president and CEO Kenneth Melani is fired after his involvement in a domestic confrontation with the husband of his girlfriend.
May 2, 2012: Following intervention by Gov. Tom Corbett, UPMC and Highmark agree to extend their current contract, giving Highmark members continued in-network access to UPMC physicians and facilities through 2014.
June 4, 2012: Highmark board names physician and former assistant secretary of defense for health affairs William Winkenwerder Jr., 58, as its new president and CEO.
Sept. 28, 2012: West Penn Allegheny officials say they've called off merger talks with Highmark and announce plans to seek other suitors after they said Highmark had insisted that the health system file for bankruptcy to get out from under its near-$1 billion debt obligation.
Oct. 29, 2012: West Penn Allegheny reports an operating loss of $112.5 million for the 2012 fiscal year ending June 30, more than double the previous year's total.
Nov. 9, 2012: Allegheny County Common Pleas Judge Christine Ward grants Highmark's request for a preliminary injunction that blocks WPAHS from talking to other possible investment partners.
January 2013: Highmark reaches agreement with West Penn Allegheny bondholders that will pay them 87.5 cents on the dollar to retire the bonds.
April 29, 2013: Pennsylvania Insurance Department Commissioner Michael Consedine announces that Highmark-WPAHS affiliation has been conditionally approved, effective immediately.