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

NEW YORK ( TheStreet) -- It is a victory for common sense. Tracking the trading behavior of company executives, directors and large shareholders in the stocks of firms they're registered in as "insiders" has proven to be profitable, according to both academic studies and (more importantly) the experience of professional investors.

Below are lists of the top 10 mainly open-market insider purchases and sales filed at the Securities and Exchange Commission Tuesday, August 28, 2012 as ranked by dollar value. Please note, however, that these are only factual lists, not buy and sell recommendations. Dollar value is only one metric to assess the importance of an insider transaction, and, frankly, often not even the most important metric that determines if an insider transaction is significant.

At, we find new investment ideas just about every day using these and more intricate insider screens to determine where we should focus our subsequent fundamental and technical analysis. And while stocks don't (or shouldn't) move up or down based on insider activity alone, insiders tend to be good indicators of when real stock-moving events like earnings surprises, corporate actions, and new products may be in the offing.

So use these regular Top Insider Trades columns as the initial research tools they are meant to be, and click the links in the tables to analyze a company's or insider's full insider history. Also feel free to contact us with any questions on our proprietary insider data, and how it is best analyzed.
Sirius Xm Radio (SIRI) Liberty Media BO 40,460,804 102,200,032
Home Loan Servicing (HLSS) Erbey William C DIR 51,000 801,269
Choice Hotels International (CHH) Alexander Stiles Barbara DIR 8,000 256,000
Sonus Networks (SONS) Empire Capital Mgt BO 122,421 232,600
Opko Health (OPK) Frost Phillip MD et al CEO,CB,BO 42,500 190,811
Sonic Foundry (SOFO) Burish Mark D DIR 20,000 145,000
Halozyme Therapeutics (HALO) Kelley Kenneth J DIR 20,000 113,974
Procera Networks (PKT) Losty Mary DIR 5,000 112,224
Dynegy (DYN) Litespeed Management BO 240,651 111,327
Fifth Street Finance (FSC) Tannenbaum Leonard M CEO,DIR 10,000 104,750
Source: Insider Insights
Google (GOOG) Schmidt Eric E CB,DIR 103,193 69,304,428
Estee Lauder (EL) Lauder Ronald S CB,BO 701,460 42,060,896
ZAGG (ZAGG) Pedersen Robert G II CB,CEO,BO 1,250,061 8,626,173
Campbell Soup (CPB) Weber Charlotte C DIR 231,834 8,152,350
Saks (SKS) Inmobiliaria Carso SA BO 395,000 4,643,361
Pennsylvania REIT (PEI) Pasquerilla Mark E DIR 100,000 1,566,000
Apollo Comml RE Finance (ARI) Athene BO 85,301 1,488,707
Aruba Networks (ARUN) Orr Dominic P PR,CEO,DIR 72,600 1,455,267
Evolution Petroleum (EPM) Peninsula Capital Mgt DIR 146,965 1,184,538
Lsb Industries (LXU) Golsen Jack E CB,CEO,BO 24,352 933,656
Source: Insider Insights

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, 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 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.