February 5, 2001 Enron executives get bonus checks for millions of dollars.
Arthur Andersen auditors internally question the LJM partnerships.
February 12, 2001 Skilling is named CEO.
Arthur Andersen tells the Enron board of directors audit committee that they have no concerns.
March 7, 2001 Lay and other Enron officials meet with the energy task force of Vice President Dick Cheney.
April 17, 2001 Enron announces a first quarter profit of $536 million.
Lay and other Enron officials meet with Vice President Dick Cheney.
May 5, 2001 Enron's stock price closes below $59.78, a critical point for one of the partnerships.
May 17, 2001 The energy task force issues its report, which endorses some of Enron's proposals.
May 18, 2001 Chief executive of Enron Xcelerator Lou Pai sells 1.1 million Enron shares over the next 21 days.
May 22, 2001 Jordan Mintz sends a memorandum to Jeffrey Skilling for his sign-off on LJM paperwork.
June 6, 2001 Enron general counsel Jim Derrick sells 160,000 Enron shares over the next ten days.
June 21, 2001 Skilling is hit in the face with a pie during a visit to California.
July 13, 2001 Chief executive of Enron Broadband Services Ken Rice sells 386,000 Enron shares.
July 23, 2001 Enron's stock price closes below $47, a critical point for the Raptor partnerships.
July 27, 2001 Director Robert Belfer sells 100,000 Enron shares.
August 7, 2001 Officials from a German Enron subsidiary meet with the Dick Cheney energy task force.
August 14, 2001 Citing "personal reasons," Skilling resigns as CEO. Lay replaces him, stating "Absolutely no accounting issue, no trading issue, no reserve issue, no previously unknown problem issues" are involved.
August 15, 2001 Sherron Watkins, a vice president for corporate development, puts a one-page letter in Lay's suggestion box, questioning Enron's accounting practices.
August 16, 2001 Lay discusses Skilling's departure with employees.
Lay exercises 25,000 share options at $20.78 ($519,000 total value); the stock closes at $36.25. One of Lay's lawyers states later that some of the stock was used to repay an Enron line of credit.
August 21, 2001 Lay emails employees, stating "one of my highest priorities is to restore investor confidence in Enron. This should result in a significantly higher stock price."
He exercises 68,620 share options at $21.56 ($1,479,477 total value); the stock closes at $36.88. One of Lay's lawyers states later that Lay never sold the shares, which are now practically worthless.
David B. Duncan, the lead partner on the Enron account for Arthur Andersen, meets with three other AA officials to discuss the Watkins call. A memo states they "agreed to consult our firm's legal adviser about what actions to take."
August 22, 2001 Watkins meets with Lay, giving him a seven-page letter stating that Enron may be an "elaborate accounting hoax," and advises him not to involve Vinson & Elkins, Enron's law firm, because of potential conflicts of interest.
V&E is asked if an inquiry is necessary, but told not to bother "second-guessing the accounting advice and treatment."
September 17, 2001 Jeffrey Skilling sells 500,000 Enron shares.
September 21, 2001 Director Robert Belfer sells 109,000 Enron shares.
September 26, 2001 Lay tells employees that Enron's accounting practices are "legal and totally appropriate," that Enron stock is "an incredible bargain," that he and other executives have bought Enron stock in the last two months, and that "the third quarter is looking great" in an online forum.
October 9, 2001 Arthur Andersen hires the Davis Polk & Wardwell law firm to prepare a defense for the company.
October 12, 2001 An Arthur Andersen lawyer in Chicago, Nancy Temple, emails an Andersen partner in Houston, Michael Odom, reminding him of the Andersen document retention and destruction policy. He forwards the email to a co-worker.
October 15, 2001 Vinson & Elkins deliver a report which states that Arthur Andersen approved of Enron's accounting procedures, and that Enron did nothing wrong.
October 16, 2001 Enron announces a third quarter loss of $618 million.
The Enron 401(k) retirement plan is frozen for administrative changes.
The Arthur Andersen partner in charge of the Enron account, David B. Duncan tells the audit managers to comply with the Andersen document retention policy, and observes them doing so by shredding documents.
October 23, 2001 Lay reassures investors in a conference call, asserting there was no conflict of interest with the Raptor partnerships and that the directors on the board "continue to have the highest faith and confidence" in Fastow.
David B. Duncan organizes a meeting of the Enron account group to speed up the document destruction, according to testimony by Arthur Andersen managing director Dorsey Lee Baskin Jr.
October 24, 2001 Andrew Fastow is forced to leave Enron.
October 25, 2001 Enron sends an email to all employees and to Arthur Andersen stating that all pertinent documents should be preserved.
Lay meets with Dynegy chairman Chuck Watson.
October 28, 2001 Lay talks to Paul H. O'Neill, Secretary of the Treasury. O'Neill tells Peter Fisher, Treasury Under-secretary to look into Enron. Fisher talks with Enron president Greg Whalley repeatedly over the next few days. Whalley, according to Fisher, implies that he would like Fisher to ask Enron's creditors to extend its credit. Fisher doesn't.
October 29, 2001 Lay asks Donald L. Evans, Secretary of Commerce, for help with an upcoming credit rating review by Moody's Investors Service. Evans does nothing, and Moody's downgrades Enron's rating.
October 31, 2001 Enron announces that the S.E.C. inquiry is now a formal investigation.
November 8, 2001 Enron announces it overstated profits by $586 million over five years.
Lay calls O'Neill again, comparing Enron to Long Term Capital.
The S.E.C. subpoenas Arthur Andersen officials.
November 9, 2001 Dynegy announces it will acquire Enron for $9 billion.
Nancy Temple leaves a voice message for David B. Duncan ordering the preservation of all Enron documents. His assistant sends an email to other assistants to "stop the shredding".
November 19, 2001 Enron announces the payment of a $690 million note is nearly due as a result of the descent of its credit rating.
November 28, 2001 Dynegy retracts its acquisition offer.
November 29, 2001 The S.E.C. begins investigating Arthur Andersen.
January 10, 2002 Arthur Andersen states that it destroyed Enron documents. Congressional investigators state the destruction occurred from September to November.
January 14, 2002 Arthur Andersen releases communications documents detailing Nancy Temple's involvement in the document destruction.
January 15, 2002 Arthur Andersen announces that it fired David B. Duncan and put three partners on administrative leave.
January 20, 2002 On Meet the Press, Arthur Andersen CEO Joseph Berardino states the document retention policy was "not to shred documents, not to eliminate documents if you have a reasonable basis to anticipate investigation."
January 22, 2002 Enron executive Maureen Castaneda states that Enron has been shredding documents in its Houston headquarters the previous week.
May 3, 2002 Enron proposes to set up a new company temporarily called OpCo Energy Company. If approved, OpCo will have Enron's core assets, including 15,000 miles of pipeline assets, 75,000 miles of distribution assets, 6,700 megawatts of generation, and 12,000 employees. 
February 19, 2003 A grassroots movement in Portland, Oregon submits enough signatures to qualify a measure for an election to decide whether to begin the process of converting Enron subsidiary Portland General Electric (PGE) into a PUD.
March 17, 2003 Merrill Lynch, its four former executives and SEC agree to settle the Enron security fraud case for $80 million. It is one of the five largest penalties inposed on security-related civil cases. 
March 19, 2003 Enron Board of Directors approves to keep its three pipeline companies, Transwestern Pipeline Company, Citrus Corp., and Northern Plains Natural Gas Company, as subsidiaries of the new company temporarily called PipeCo. 
July 11, 2003 Enron files its bankruptcy reorganization plan.
November 5, 2003 Voters in the Portland, Oregon metro area defeat a measure that would begin the process of converting Enron subsidiary PGE into a PUD, after both local utility companies, Portland General Electric and PacifiCorp, spend $1.9 million dollars on advertisements to defeat the measure.
November 18, 2003 Enron announced that it was selling its subsidiary PGE to a group of investors headed by former Oregon governor Neil Goldschmidt and funded by Texas Pacific Group for $2.35 billion. Goldschmidt had been a visible opponent of the measure to convert PGE to a Public Utility District.
January 9, 2004 Former Assistant Treasurer Lea Fastow failed to respond to a plea agreement by the deadline. The offer would have allowed her to plead guilty in federal court to lesser charges and serve five months in return for her testimony. Her trial was scheduled to start February 10.
January 14, 2004 Andrew Fastow and his wife Lea Fastow, both accept a plea agreement. Andrew Fastow will serve a ten-year prison sentence and forfeit $23.8 million. Lea Fastow will serve a five-month prison sentence and a year of supervised release, including five months of house arrest. Both will provide testimony against other Enron corporate officers.