This excerpt taken from the TLAB 8-K filed Feb 28, 2006.
Item 5.04 Temporary Suspension of Trading under Registrants Employee Benefits Plans
On February 22, 2006, the Registrant received notice from its plan administrator of an upcoming black-out period affecting the Tellabs Profit Sharing and Savings Plan and the Tellabs Retirement Plan (Plans). The Administrative Committee of the Plans notified Tellabs Board of Directors and Section 16 Officers that they would be unable to trade the Registrants securities during the upcoming black-out period. The letter sent by the Administrative Committee of the Plans to the Directors and Section 16 Officers on February 24, 2006, regarding the black-out period is furnished herewith as Exhibit 99.1.
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.