Jan. 10: Aetna announces plans to reorganize into two main business units.
Feb. 1: Aetna restates its 1998 and 1999 earnings after an SEC probe and announces it will take a $17 million charge for the fourth quarter of 1999.
Feb. 8: Aetna announces a sharp drop in 1999 net income; its stock plummets.
Feb. 25: Aetna's chairman and chief executive officer, Richard Huber, resigns amid mounting investor criticism. He is replaced by longtime board member William Donaldson.
March 1: Aetna confirms receiving a $10 billion joint takeover bid by ING Group and WellPoint Health Networks. Donaldson hires a turnaround specialist as a temporary adviser to the company.
March 12: Aetna rejects the ING/WellPoint bid and announces plans to split into two separate, publicly traded entities.
April 11: Aetna reaches a landmark settlement with the Texas attorney general, agreeing to making several changes in the way it does business.
May 18: Aetna's president, Michael Cardillo, retires.
May 30: ING makes a renewed offer to buy Aetna's financial and international businesses.
July 18: Aetna's stock price tumbles again after it warns of a second-quarter earnings shortfall.
July 20: Aetna agrees to sell its noncore businesses to ING for $7.7 billion.
Aug. 4: Aetna reports sharply lower second-quarter earnings.
Sept. 9: Aetna names John Rowe, M.D., president and CEO.
Sept. 15: Rowe officially begins his duties.
Sept. 26: Aetna pays $82.5 million to settle a class-action lawsuit accusing it of misleading investors.
Nov. 1: Aetna announces disappointing third-quarter results.
Nov. 30: Aetna shareholders approve the sale of the company's noncore business units to ING.
Dec. 13: Aetna completes the sale of its noncore business units to ING and spins off its domestic healthcare business to shareholders.
Dec. 18: Aetna announces that it will cut 5,000 jobs, or 13% of its work force.
Dec. 19: Aetna abandons its controversial "all products" policy and signs a deal with the California Medical Association to make several reforms.
Dec. 31: Aetna officially drops 340,000, or 55%, of its Medicare HMO enrollees.