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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
932111	Micrel Inc	MCRL	Semiconductors & Related Devices (3674)	942526744

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1276261	Guy James Gandenberger		Vp Ww Operations And Foundry	No	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
Common Stock	Acquisiton	2011-02-02	10,000	$8.65	18,788	No	4	M	Direct
Common Stock	Disposition	2011-02-02	10,000	$13.35	8,788	No	4	S	Direct
Common Stock	Acquisiton	2011-02-02	10,400	$6.74	19,188	No	4	M	Direct
Common Stock	Disposition	2011-02-02	10,400	$13.35	8,788	No	4	S	Direct
Common Stock	Acquisiton	2011-02-03	18,400	$8.65	27,188	No	4	M	Direct
Common Stock	Disposition	2011-02-03	18,400	$13.33	8,788	No	4	S	Direct
Common Stock	Acquisiton	2011-02-04	20,000	$9.78	28,788	No	4	M	Direct
Common Stock	Disposition	2011-02-04	20,000	$13.20	8,788	No	4	S	Direct
Common Stock	Acquisiton	2011-02-04	10,800	$8.65	19,588	No	4	M	Direct
Common Stock	Disposition	2011-02-04	10,800	$13.20	8,788	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Non-qual Stock Options	Disposition	2011-02-02	10,000	$8.65	10,000	$8.65
Common Stock	Non-qual Stock Options	Disposition	2011-02-02	10,400	$6.74	10,400	$6.74
Common Stock	Non-qual Stock Options	Disposition	2011-02-03	18,400	$8.65	18,400	$8.65
Common Stock	Incentive Stock Options	Disposition	2011-02-04	12,281	$9.78	12,281	$9.78
Common Stock	Non-qual Stock Options	Disposition	2011-02-04	7,719	$9.78	7,719	$9.78
Common Stock	Non-qual Stock Options	Disposition	2011-02-04	10,800	$8.65	10,800	$8.65

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
390,999	2008-11-29	2017-11-29	No	4	M	Direct
380,599	2009-02-21	2018-02-21	No	4	M	Direct
362,199	2008-11-29	2017-11-29	No	4	M	Direct
349,918	2006-03-09	2015-03-09	No	4	M	Direct
342,199	2006-03-09	2015-03-09	No	4	M	Direct
331,399	2008-11-29	2017-11-29	No	4	M	Direct

Footnotes

Pursuant to the terms of the 2003 Incentive Award Plan, this option was granted on 11/29/2007 and vested annually at 20% per year over 5 years.
Pursuant to the terms of the 2003 Incetive Award Plan, this option was granted on 2/21/2008 and vested annually at 20% per year.
Pursuant to the terms of the 2003 Incentive Award Plan, this option was granted on 03/09/2005 and vested annually at 20% per year over 5 years.
This cashless exercise and sale of employee stock options is made pursuant to a domestic relations order under which the reporting person will exercise and sell optons to purchase approximately 235,100 shares of Micrel common stock.