By Jonathan Moreland, founder of Insider Insights and author of Profit From Legal Insider Trading.

NEW YORK ( TheStreet) -- Which insiders are selling and buying chunks of stocks?

Below are lists of the top 10 open-market insider purchases and sales filed at the Securities and Exchange Commission Monday, August 15, 2011 as ranked by dollar value. Company executives and directors are in the best position to assess the attractiveness of their firms' shares, and here is how many of them are voting their wallets! Please note, however, that these are factual lists, not buy and sell recommendations. Dollar value is only one metric to assess the importance of an insider transaction.

Mueller Industries (MLI) Leucadia National BO 584,851 $23,759,178
Valeant Pharmaceuticals (VRX) Pearson J Michael CEO 155,642 $6,010,770
Equity One (EQY) Katzman Chaim CB,DIR
BO
220,681 $3,827,579
Transdigm Group (TDG) Small Robert J DIR 34,783 $3,032,694
Western Asset Claymore Inflation Linked Opp Fd (WIW) Cascade Investment BO 209,483 $2,685,132
Federal Mogul (FDML) Icahn Carl C CB,DIR
BO
113,722 $1,916,443
Overseas Shipholding Group (OSG) Fribourg Charles DIR 102,850 $1,870,032
Red Lion Hotels (RLH) Columbia Pacific Opp Fund BO 173,267 $1,120,582
Merck & Co (MRK) Frazier Kenneth C PR,CEO
DIR
32,000 $1,016,838
City Holding (CHCO) Elliot John R DIR 27,300 $827,747
Source: www.InsiderInsights.com
Exide Technologies (XIDE) Gendell Jeffrey L Et Al BO 875,000 $4,410,724
Riverbed Technology (RVBD) McCanne Steven CTO,DIR 100,000 $2,356,810
Western Refining (WNR) Foster Paul L CB,DIR
BO
127,500 $2,116,849
Amazon.Com (AMZN) Piacentini Diego VP 10,000 $2,019,846
Amazon.Com (AMZN) Jassy Andrew R VP 7,750 $1,565,965
Amazon.Com (AMZN) Wilson L Michelle VP 7,500 $1,521,413
Western Refining (WNR) Franklin Mountain Investments BO 85,000 $1,411,234
Luminex (LMNX) Loewenbaum G Walter II DIR 45,000 $950,378
Magnum Hunter Resources (MHR) Ormand Ronald D VP,CFO
DIR
200,000 $896,000
Amazon.Com (AMZN) Szkutak Thomas J VP,CFO 4,000 $808,001
Source: www.InsiderInsights.com

Key to Titles: A=Assistant, AI=Affiliated Investor, AO=Accounting Officer, BD=Business Development, BO=Beneficial Owner, CAO=Chief Accounting Officer, CB=Chairman, CCO=Chief Compliance Officer, CEO=Chief Executive Officer, CFO=Chief Financial Officer, CIO=Chief Information Officer, CO=Compliance Officer, COO=Chief Operating Officer, CT=Controller, CTO=Chief Technology Officer, DIR=Director, EVP=Executive Vice President, F=Founder, FO=Financial Officer, GC=General Counsel, HR=Human Resources, IO=Information Officer, IR=Investor Relations, LO=Legal Officer, MD=Managing Director, O=Officer, OO=Operating Officer, PR=President, PT=Partner, REL=Relative of an insider, SEC=Secretary, SH=Shareholder, SO=Sales Officer, TO=Technology Officer, TR=Treasurer, TT=Trustee, VCB=Vice Chairman, VP=Vice President, X=Ex Officer or other title displayed.
Jonathan Moreland is the founder of InsiderInsights.com, which produces a weekly newsletter and offers professional screening and alerting tools to analyze a proprietary, real-time insider data feed. He is also the principal of Insider Asset Management, a registered investment advisor in New York. Mr. Moreland has been analyzing insider data professionally for two decades and has been a contributor to TheStreet.com since 2001. A fundamental analyst with an MBA in finance, Mr. Moreland long ago identified insider data as an excellent first screen to determine where to focus his research efforts. He is quoted frequently in the media for his insider analysis and stock recommendations stemming from it. He is also author of Profit From Legal Insider Trading.

Under no circumstances does the information in this column represent a recommendation to buy or sell stocks. While he cannot provide investment advice or recommendations, Moreland appreciates your feedback; click here to send him an email.

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