FOR IMMEDIATE RELEASE
June 27, 2012

Chairman's Letter to Shareholders

Dear Stockholders, Customers, Employees and Friends,

As Tellabs CEO Rob Pullen committed in his April 20 message, I am providing an update on his health.

Rob has been continuing treatment for cancer, and he recently had surgery. He remains in the hospital in stable condition and is under continuing care for his recovery.

We all wish Rob a quick and full recovery.

During Rob's recovery, Tellabs Board of Directors has appointed Dan Kelly as acting president and CEO.

Sincerely,

Michael J. Birck
Chairman
Tellabs

MEDIA CONTACTS:

George Stenitzer
+1.630.798.3800

Marta Kwiatek
+1.630.798.2524

INVESTOR CONTACT:

Tom Scottino
+1.630.798.3602

(View media contact list.)


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