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Committee Composition

= Chair of the Board = Chair = Member = Independent Director = Financial Expert

	Audit	Nominating and Governance	Compensation
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. 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. 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. 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. 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). 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. 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

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