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 Friday, May 13, 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.

Geeknet (GKNT) Langone Kenneth G DIR 17,716 $471,293
Macerich (MAC) Moore Stanley A DIR 6,776 $348,869
Inland Real Estate (IRC) Goodwin Daniel L DIR,BO 35,000 $311,791
Eastman Kodak (EK) Braddock Richard S DIR 69,000 $198,030
Geeknet (GKNT) Georgescu Peter A DIR 7,799 $197,956
Cerus (CERS) Corash Laurence M DIR 60,000 $176,340
Red Lion Hotels (RLH) Columbia Pacific Opp Fund BO 19,861 $164,746
Donegal Group (DGICA) Shepard Gregory M BO 11,974 $160,816
Wesco International (WCC) Windrow Kimberly G VP,HR 2,800 $153,850
Friendfinder Networks (FFN) Bell Marc H CEO,PR
20,001 $149,084
Microsoft (MSFT) Gates William H Iii DIR 5,000,000 $127,077,504
Bed Bath & Beyond (BBBY) Eisenberg Warren CB,DIR 300,000 $16,810,478
Bed Bath & Beyond (BBBY) Feinstein Leonard CB,DIR 300,000 $16,810,478
Rackspace Hosting (RAX) Weston Graham M CB,DIR
300,000 $12,545,900
Validus Holdings (VR) Singh Alok DIR 331,007 $10,743,387
Kellogg (K) Kellogg WK Foundation BO 156,300 $8,970,667
Chubb (CB) Finnegan John D CB,PR
83,182 $5,401,278
True Religion Apparel (TRLG) Lubell Jeffrey CEO,DIR 159,668 $4,569,462
Riverbed Technology (RVBD) McCanne Steven CTO,DIR 100,000 $3,533,234
Mohawk Industries (MHK) Lorberbaum Mark BO 50,000 $3,382,070

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.