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Top Insider Sales: Aug, 3, 2012 (MPWR, KALU, RT, CLNE, RAX, ACAS, USNA, AGN, CYBX, CSCD)

|Includes: ACAS, AGN, CLNE, CSCD, CYBX, KALU, Monolithic Power Systems, Inc. (MPWR), RAX, RT, USNA

Contextuall scans the SEC databases on a daily basis, always trying to identify companies that are being dragged down by significant insider selling.

Many investors believe that there is a correlation between high levels of insider buying and superior stock market performance. After all, it is a massive vote of confidence if managers in charge of a company are willing to use their own cash to buy the shares of their employers.

If, on the other hand, insiders start dumping the shares of their employers, it could signal trouble ahead.

The top insider sales reported on 12/30/1899 are listed below.

Click on any of the links to go directly to the SEC filings, or do background checks on the individuals involved. All links will open in a new browser window.

Find more data on insider buying and selling

1. Monolithic Power Systems Inc. (NASDAQ:MPWR): Total value of insider selling reported at $269,724

Insiders Involved:

Michael Hsing (NYSE:CEO)
View SEC Filing
Google Michael Hsing

Meera Rao (NASDAQ:CFO)
View SEC Filing
Google Meera Rao

Maurice Sciammas (Sr. V.P.of Sales and Marketing)
View SEC Filing
Google Maurice Sciammas

Description: Designs, develops, manufactures, and markets analog and mixed-signal semiconductors. (Click here for Monolithic Power Systems Inc. website)

2. Kaiser Aluminum Corporation (NASDAQ:KALU): Total value of insider selling reported at $137,198

Insiders Involved:

Pete Bunin (SVP - Operations)
View SEC Filing
Google Pete Bunin

Jack Hockema (President & CEO)
View SEC Filing
Google Jack Hockema

Description: Produces and sells semi-fabricated specialty aluminum products primarily in the United States and Canada. (Click here for Kaiser Aluminum Corporation website)

3. Ruby Tuesday, Inc. (NYSE:RT): Total value of insider selling reported at $121,663

Insiders Involved:

Robert Leboeuf (SVP-Chief People Officer)
View SEC Filing
Google Robert Leboeuf

Scarlett May (SVP-Chief Legal Officer & Sec.)
View SEC Filing
Google Scarlett May

Description: Develops, operates, and franchises casual dining restaurants in the United States, Puerto Rico, Guam, and internationally. (Click here for Ruby Tuesday, Inc. website)

4. Clean Energy Fuels Corp. (NASDAQ:CLNE): Total value of insider selling reported at $102,360

Insiders Involved:

J. Peter Grace (SVP, Sales and Finance)
View SEC Filing
Google J. Peter Grace

Description: Provides natural gas as an alternative fuel for vehicle fleets in the United States and Canada. (Click here for Clean Energy Fuels Corp. website)

5. Rackspace Hosting, Inc. (NYSE:RAX): Total value of insider selling reported at $97,961

Insiders Involved:

Lew Moorman (President, Cloud)
View SEC Filing
Google Lew Moorman

Description: Operates in the hosting and cloud computing industry. (Click here for Rackspace Hosting, Inc. website)

6. American Capital, Ltd. (NASDAQ:ACAS): Total value of insider selling reported at $97,703

Insiders Involved:

Darin Winn (Senior Vice President)
View SEC Filing
Google Darin Winn

Description: American Capital, Ltd. is a private equity and venture capital firm specializing in management and employee buyouts, mezzanine, acquisition, recapitalization, middle market, and growth capital investments. (Click here for American Capital, Ltd. website)

7. USANA Health Sciences Inc. (NYSE:USNA): Total value of insider selling reported at $94,680

Insiders Involved:

Deborah Woo (President of Asia Pacific)
View SEC Filing
Google Deborah Woo

Description: Develops, manufactures, distributes, and sells nutritional and personal care products worldwide. (Click here for USANA Health Sciences Inc. website)

8. Allergan Inc. (NYSE:AGN): Total value of insider selling reported at $90,000

Insiders Involved:

Trevor Jones (Director)
View SEC Filing
Google Trevor Jones

Description: Operates as a multi-specialty healthcare company primarily in the United States, Europe, Latin America, and the Asia Pacific. (Click here for Allergan Inc. website)

9. Cyberonics Inc. (NASDAQ:CYBX): Total value of insider selling reported at $86,620

Insiders Involved:

David Wise (SR VP & Chief Admin Officer)
View SEC Filing
Google David Wise

Description: Engages in the design, development, manufacture, sale, and marketing of implantable medical devices that provide vagus nerve stimulation (VNS) therapy for the treatment of refractory epilepsy and treatment-resistant depression. (Click here for Cyberonics Inc. website)

10. Cascade Microtech Inc. (NASDAQ:CSCD): Total value of insider selling reported at $80,047

Insiders Involved:

Eric Strid (Chief Technology Officer)
View SEC Filing
Google Eric Strid

Description: Designs, develops, manufactures, and markets wafer probing and test socket solutions for the electrical measurement and testing of high performance chips. (Click here for Cascade Microtech Inc. website)

Disclosure: I have no positions in any stocks mentioned, and no plans to initiate any positions within the next 72 hours.