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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
317771	Tellabs Inc	TLAB	Telephone & Telegraph Apparatus (3661)	363831568

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1012910	J Michael Birck	One Tellabs Center 1415 W. Diehl Road Naperville IL 60563	Chairman Of The Board	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2010-02-19	100,000	$6.93	14,511,000	No	4	S	Indirect	By Partnership

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	By Partnership

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	16,558,171	Direct
Common Stock	1,081	Indirect	By Managed Account
Common Stock	2,248,870	Indirect	By Spouse

Footnotes

The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Oak Street Investments, L. P. on August 31, 2009.
This transaction was executed in multiple trades at prices ranging from $6.88 to $7.01. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
Held by Oak Street - Mr. Birck disclaims beneficial ownership of the shares held by Oak Street except to the extent of his pecuniary interest therein.
Held through the Tellabs 401(k) Plan.
Held by spouse - Mr. Birck disclaims beneficial ownership of these shares.