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Board of Directors

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Nav Sooch

Chairman

Navdeep S. Sooch co-founded Silicon Laboratories in August 1996 and served as Chief Executive Officer until 2003 and Chairman of the Board since our inception. From March 1985 until founding Silicon Laboratories, Mr. Sooch held various positions at Crystal Semiconductor/Cirrus Logic, a designer and manufacturer of integrated circuits, including Vice President of Engineering, Product Planning Manager of Strategic Marketing and Design Engineer. From May 1982 to March 1985, Mr. Sooch was a Design Engineer with AT&T Bell Labs. Mr. Sooch holds a B.S. in electrical engineering from the University of Michigan, Dearbonr and an M.S. in electrical engineering from Stanford University.

Member of the Nominating and Governance Committee since 2010
Member of the Compensation Committee since 2010

Holdings: 731,791 shares     View Transactions

Date	Type	Shares Traded	Price Range
05/26/11	Option Execute	30,000	24.30
05/25/11	Option Execute	20,000	24.30
05/17/11	Option Execute	62,334	15.10
04/21/11	Acquisition (Non Open Market)	5,303	0.00
04/22/10	Acquisition (Non Open Market)	4,383	0.00
04/05/10	Automatic Sell	62,589	49.10 - 49.69
04/05/10	Option Execute	12,589	15.10
03/25/10	Automatic Sell	2,824	49.03
03/25/10	Option Execute	2,824	15.10
03/23/10	Automatic Sell	34,587	49.02
03/23/10	Option Execute	34,587	15.10
08/28/09	Automatic Sell	100,000	44.57 - 44.80
08/28/09	Option Execute	50,000	15.10
06/26/09	Automatic Sell	2,800	39.08
06/10/09	Automatic Sell	2,200	39.05
06/01/09	Automatic Sell	5,000	34.48
04/23/09	Acquisition (Non Open Market)	8,082	0.00
02/09/09	Disposition (Non Open Market)	4,571	n/a
11/03/08	Disposition (Non Open Market)	19,250	n/a
10/25/07	Automatic Sell	36,035	45.06
09/14/07	Automatic Sell	50,000	40.09 - 40.10

Necip Sayiner

President and Chief Executive Officer

Dr. Sayiner joined Silicon Laboratories as President and CEO in September 2005. He was responsible for driving the diversification strategy that led the company to transform its business to become a broad-based highly-profitable enterprise. His discipline around new product development has resulted in several years of record new product introductions and better than industry growth rates. Prior to joining Silicon Laboratories, Dr. Sayiner was vice president and general manager of the enterprise and networking division at Agere Systems. He also served as the vice president and general manager of the networking IC division and held several senior design management roles in the storage division. Dr. Sayiner holds a bachelor's degree in electrical engineering and physics from Bosphorus University in Turkey. He holds a master's degree in electrical engineering from Southern Illinois University and a doctorate in electrical engineering from the University of Pennsylvania.

Holdings: 246,121 shares     View Transactions

Date	Type	Shares Traded	Price Range
01/25/12	Automatic Sell	42,408	48.14
01/25/12	Option Execute	33,708	32.27
01/24/12	Automatic Sell	34,100	46.48
01/24/12	Option Execute	27,500	32.27
01/18/12	Automatic Sell	32,935	43.54 - 44.82
01/18/12	Option Execute	25,000	32.27
04/27/11	Automatic Sell	4,300	45.75
02/17/11	Automatic Sell	2,150	46.74
02/15/11	Acquisition (Non Open Market)	30,528	0.00
02/15/11	Disposition (Non Open Market)	31,134	45.73
01/20/11	Automatic Sell	2,000	47.53
12/15/10	Automatic Sell	2,250	46.39
12/08/10	Disposition (Non Open Market)	3,063	46.42
11/17/10	Automatic Sell	2,250	40.94
10/22/10	Automatic Sell	2,250	38.29
10/15/10	Automatic Sell	2,250	38.29
09/14/10	Disposition (Non Open Market)	10,934	35.93
08/18/10	Automatic Sell	2,250	39.90
07/21/10	Automatic Sell	2,250	42.45
06/16/10	Automatic Sell	2,250	45.78
05/19/10	Automatic Sell	2,250	45.23
04/21/10	Automatic Sell	2,250	50.54
04/15/10	Automatic Sell	55,000	52.52
04/15/10	Option Execute	45,000	32.27
04/07/10	Automatic Sell	48,000	50.33
04/07/10	Option Execute	40,000	32.27
03/17/10	Automatic Sell	2,250	47.71
02/17/10	Automatic Sell	2,250	45.75
02/15/10	Disposition (Non Open Market)	7,528	45.24
02/15/10	Acquisition (Non Open Market)	99,050	0.00
01/20/10	Automatic Sell	2,250	44.76
01/04/10	Automatic Sell	97,000	48.05
01/04/10	Option Execute	85,000	32.27
12/15/09	Automatic Sell	2,250	45.27
12/08/09	Disposition (Non Open Market)	3,063	44.75
12/07/09	Disposition (Non Open Market)	3,644	44.63
11/17/09	Automatic Sell	2,250	43.91
10/20/09	Automatic Sell	2,250	44.78
09/15/09	Automatic Sell	2,250	48.13
09/14/09	Disposition (Non Open Market)	10,934	48.01
09/08/09	Automatic Sell	30,000	47.54
09/08/09	Option Execute	30,000	32.27
08/28/09	Automatic Sell	30,500	44.74
08/28/09	Option Execute	25,000	32.27
08/18/09	Automatic Sell	2,250	41.33
07/21/09	Automatic Sell	2,250	38.63
07/01/09	Automatic Sell	3,500	39.15
06/09/09	Automatic Sell	2,250	37.80
05/26/09	Automatic Sell	2,250	32.85
04/29/09	Automatic Sell	15,750	32.85

Dave Welland

Silicon Laboratories Fellow

Mr. Welland co-founded Silicon Laboratories in August 1996 and served as Vice President and director since the company's inception. From November 1991 until founding Silicon Laboratories, Mr. Welland held various positions at Crystal Semiconductor/Cirrus Logic, including Senior Design Engineer. Mr. Welland holds a B.S. in electrical engineering from the Massachusetts Institute of Technology.

William Bock

Elected 2000
William (Bill) Bock retired from Silicon Labs management team in 2011 after serving for five years Senior Vice President of Finance and Administration and Chief Financial Officer. Bill previously served on the Silicon Laboratories' Board of Directors following the IPO before joining the management team. Prior to joining Silicon Laboratories, Bill was a partner at venture capital firms CenterPoint Ventures and Verity Ventures. From 1997 to 1999, Bill served as President and Chief Executive Officer of DAZEL Corporation, a provider of electronic information delivery systems. After DAZEL's acquisition by Hewlett-Packard, Bill then served as Vice President for HP until 2001. Bill served as Executive Vice President and Chief Operating Officer of Tivoli Systems, a client server software company, which he helped take public in 1995, and was later acquired by IBM in 1996. Prior to joining Tivoli, Bill successfully completed an IPO at Convex Computer Corporation as CFO in 1986, and then became the Senior Vice President of Sales in 1991. Prior to Convex, Bill spent nine years in various finance roles at Texas Instruments including the Vice President and Controller of the Data Systems Group. Bill holds a bachelor's degree in Computer Science from Iowa State University and a master's degree in industrial administration from Carnegie Mellon University.

Holdings: 70,818 shares     View Transactions

Date	Type	Shares Traded	Price Range
11/15/11	Automatic Sell	9,533	42.20
11/08/11	Disposition (Non Open Market)	5,467	42.58
10/26/11	Automatic Sell	7,963	40.00
05/19/11	Automatic Sell	7,293	45.19
02/15/11	Acquisition (Non Open Market)	15,153	0.00
02/15/11	Disposition (Non Open Market)	5,570	45.73
11/15/10	Automatic Sell	9,533	41.43
11/08/10	Disposition (Non Open Market)	5,467	41.77
08/18/10	Automatic Sell	3,982	40.00
06/22/10	Automatic Sell	3,428	44.81
03/23/10	Automatic Sell	35,000	49.00
03/23/10	Option Execute	35,000	32.98
02/15/10	Disposition (Non Open Market)	1,431	45.24
02/15/10	Acquisition (Non Open Market)	31,742	0.00
12/07/09	Disposition (Non Open Market)	911	44.63
11/12/09	Automatic Sell	10,225	43.52
11/09/09	Automatic Sell	18,000	43.00
11/09/09	Option Execute	18,000	32.98
11/08/09	Disposition (Non Open Market)	4,775	41.90
07/29/09	Automatic Sell	35,000	41.00 - 43.00
07/29/09	Option Execute	35,000	31.23 - 32.98
04/29/09	Automatic Sell	11,039	32.41
02/15/09	Acquisition (Non Open Market)	32,480	0.00
12/07/08	Disposition (Non Open Market)	661	17.76
11/08/08	Disposition (Non Open Market)	3,967	24.29
05/08/08	Automatic Sell	3,178	35.05
02/15/08	Acquisition (Non Open Market)	10,000	0.00
12/07/07	Acquisition (Non Open Market)	10,000	0.00
12/07/07	Disposition (Non Open Market)	1,822	38.20
11/13/07	Automatic Sell	10,430	38.99
11/08/07	Disposition (Non Open Market)	4,570	39.56
10/01/07	Automatic Sell	20,000	42.40
10/01/07	Option Execute	20,000	30.15 - 31.77
09/18/07	Automatic Sell	20,000	41.00
09/18/07	Option Execute	20,000	31.00

H. Berry Cash

Mr. Cash has served as a director of Silicon Laboratories since June 1997. He has served as general partner of InterWest Partners, a venture capital firm, since 1986. Mr. Cash currently serves on the Board of Directors of the following public companies: i2 Technologies, a provider of intelligent e-business and marketplace solutions; Ciena Corporation, a designer and manufacturer of dense wavelength division multiplexing systems for fiber optic networks; Argonaut Group Inc., a specialty insurance company; First Acceptance Corp, a provider of low-cost auto insurance; and Staktek, Inc., a semiconductor assembly company. Mr. Cash holds a B.S. in electrical engineering from Texas A&M University and a M.B.A. from Western Michigan University.

Member of the Nominating and Governance Committee
Member of the Compensation Committee

Holdings: 163,342 shares     View Transactions

Date	Type	Shares Traded	Price Range
11/18/11	Sell	500	43.14
07/28/11	Sell	370	36.32
05/19/11	Sell	26,200	44.76
05/18/11	Sell	75,000	45.02
05/17/11	Sell	15,000	43.51
04/21/11	Acquisition (Non Open Market)	3,535	0.00
02/11/11	Option Execute	10,000	22.63 - 23.70
08/12/10	Sell	10,000	39.21
04/22/10	Acquisition (Non Open Market)	2,922	0.00
08/14/09	Sell	1,500	41.28
04/23/09	Acquisition (Non Open Market)	5,388	0.00
02/09/09	Sell	2,200	25.02
11/06/08	Sell	500	25.34
05/06/08	Sell	20,000	33.80
10/30/07	Sell	5,000	43.03
08/31/07	Sell	10,000	35.33
08/22/07	Sell	1,300	35.00

Robert Ted Enloe III

Mr. Enloe is currently the president and chief executive officer of Optisoft, Inc., a leading provider of intelligent traffic signal platforms. Mr. Enloe formerly served as vice chairman and member of the office of chief executive of Compaq Computer Corporation. He also served as president of Lomas Financial Corporation and Liberté Investors for more than 15 years. Mr. Enloe is currently a director of Leggett & Platt, Inc. and previously served as a director of the Federal Reserve Bank of Dallas. Mr. Enloe serves on the Board of Directors of Live Nation, the world's leading live entertainment company. Mr. Enloe holds a B.S. in engineering from Louisiana Polytechnic University and a J.D. from Southern Methodist University.

Chair of the Audit Committee
Chair of the Nominating and Governance Committee

Holdings: 3,535 shares     View Transactions

Date	Type	Shares Traded	Price Range
11/28/11	Sell	2,922	41.75
11/14/11	Sell	5,388	42.92
04/21/11	Acquisition (Non Open Market)	3,535	0.00
04/22/10	Acquisition (Non Open Market)	2,922	0.00
04/23/09	Acquisition (Non Open Market)	5,388	0.00

Kris Onken

Ms. Onken recently retired as CFO from Logitech, a multi-billion dollar maker of electronics peripherals. Ms. Onken's 35 year career includes senior finance roles at Fujitsu PC and Sun Microsystems. She currently serves on the Board of Directors for Singapore-based Biosensors International. Ms. Onken's experience managing financial and administrative functions at large multi-national companies and her background in corporate governance and Board committee leadership make her an ideal fit for Silicon Laboratories' Board of Directors.

Member of the Audit Committee

Holdings: 10,845 shares     View Transactions

Date	Type	Shares Traded	Price Range
11/30/11	Sell	1,000	42.79
04/21/11	Acquisition (Non Open Market)	3,535	0.00
04/22/10	Acquisition (Non Open Market)	2,922	0.00
04/23/09	Acquisition (Non Open Market)	5,388	0.00

Larry G Walker PhD

Mr. Walker's 25-year history in the high-tech industry began at Hewlett Packard where he rose from IC designer to the manager of a design group working on a CMOS chip design for handheld computers. At Hewlett Packard, Mr. Walker was also part of the team researching the design of analog chips in CMOS. In 1981, Mr. Walker joined Digital Equipment Corporation where he served in several positions including vice president of manufacturing technology, vice president of network engineering and vice president and general manager of the network products business where he successfully drove revenue growth rates up to mid-double-digits. Mr. Walker co-founded and served as chief executive officer of C-Port Corporation, a pioneer in the network processor industry, which was acquired by Motorola for $430 million in 2000. Following the acquisition, he served as vice president of strategy for Motorola's Network and Computing Systems Group and then vice president and general manager of the Network and Computing Systems Group until 2002. Mr. Walker has been awarded five patents and has been published in numerous industry publications. He also serves as a director of McData Corporation, Propagate Networks, Massachusetts Telecommunications Council and Hopkins School (Connecticut). Mr. Walker received a bachelor's degree in electrical engineering from Princeton University, and he received a master's degree in electrical engineering and a PhD from the Massachusetts Institute of Technology (MIT).

Member of the Audit Committee
Member of the Nominating and Governance Committee
Chair of the Compensation Committee

Holdings: 5,359 shares     View Transactions

Date	Type	Shares Traded	Price Range
11/10/11	Sell	3,000	42.15
11/10/11	Option Execute	3,000	26.19
04/21/11	Acquisition (Non Open Market)	3,535	0.00
05/10/10	Sell	3,592	46.44
04/22/10	Acquisition (Non Open Market)	2,922	0.00
04/23/09	Acquisition (Non Open Market)	5,388	0.00

William Wood

Mr. Wood has served as a director of Silicon Laboratories since March 1997. Since 1984, Mr. Wood has been a general partner, and for certain funds created since 1996, a special limited partner, of various funds associated with Austin Ventures, a venture capital firm. Since 1996, Mr. Wood has also served as general partner of Silverton Partners, an investment firm. Mr. Wood holds a B.A. in history from Brown University and an M.B.A. from Harvard University.

Member of the Audit Committee
Member of the Compensation Committee

Holdings: 127,621 shares     View Transactions

Date	Type	Shares Traded	Price Range
06/20/11	Option Execute	5,000	22.63
04/21/11	Acquisition (Non Open Market)	3,535	0.00
02/07/11	Option Execute	5,000	23.70
04/22/10	Acquisition (Non Open Market)	2,922	0.00
04/06/10	Automatic Sell	23,500	50.03
04/05/10	Automatic Sell	26,500	50.00
01/15/10	Automatic Sell	5,000	45.57
01/15/10	Option Execute	5,000	31.00
12/15/09	Automatic Sell	5,000	45.25
12/15/09	Option Execute	5,000	31.00
11/16/09	Automatic Sell	5,000	43.26
11/16/09	Option Execute	5,000	31.00
10/15/09	Automatic Sell	5,000	47.34
10/15/09	Option Execute	5,000	31.00
09/15/09	Automatic Sell	5,000	48.11
09/15/09	Option Execute	5,000	31.00
08/28/09	Automatic Sell	25,000	45.00
08/17/09	Automatic Sell	5,000	40.70
08/17/09	Option Execute	5,000	31.00
07/22/09	Automatic Sell	25,000	40.00
06/01/09	Automatic Sell	25,000	35.00
05/05/09	Automatic Sell	25,000	33.78
04/23/09	Acquisition (Non Open Market)	5,388	0.00
05/07/08	Automatic Sell	15,275	35.01
05/06/08	Automatic Sell	9,725	35.00
05/01/08	Automatic Sell	25,000	33.50
10/25/07	Automatic Sell	25,000	45.00
09/14/07	Automatic Sell	25,000	40.00