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 Friday, Aug. 2, 2013 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.
Lyondellbasell Ind (LYB) Ai Int Chem S A R L BO 8,500,000 575,535,026
Biocryst Pharm (BCRX) Baker Felix BO 1,136,364 5,000,002
Sprouts Farmrs Mkt (SFM) Golleher George DIR 225,000 4,050,000
Equus Total Return (EQS) Des Pallieres B DIR,BO 1,005,636 2,413,526
Pmc Sierra (PMCS) Relational Investors BO 324,436 2,141,278
Accelrys (ACCL) RGM Capital BO 128,350 1,165,939
Sprouts Farmrs Mkt (SFM) Fortunato Joe DIR 62,500 1,125,000
Sprouts Farmrs Mkt (SFM) Maredia Amin N CFO 45,000 810,000
Sprouts Farmrs Mkt (SFM) Townsend Steven DIR 40,000 720,000
Oncothyreon (ONTY) Bvf Part L P Il BO 338,087 589,602
Source: Insider Insights
Amazon Com (AMZN) Bezos Jeffrey P CB,CEO,BO 614,938 185,796,848
Masco (MAS) Manoogian Richard DIR 500,000 10,546,620
Facebook (FB) Ebersman David A CFO 223,400 8,477,149
Molina Health (MOH) Dentino William TT 182,550 6,798,936
Scotts Miracle Gro (SMG) Hagedorn Part BO 92,041 4,787,053
Pnc Financ (PNC) Rohr James E DIR 56,805 4,365,663
Mednax (MD) Calabro JM PR,COO 36,154 3,563,736
Wells Fargo (WFC) Carroll David M VP 79,700 3,518,947
Dr Pepper Snappl (DPS) Young Larry D PR,CEO,DIR 74,103 3,508,481
American Financ (AFG) Lindner S Craig CEO,PR,DIR 60,000 3,114,762
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.