By Jonathan Moreland, founder of 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 Thursday 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.
Texas Industries (TXI) NNS Holding BO 944,662 $30,975,042
Texas Industries (TXI) Longleaf Partners Funds Trust BO 425,404 $13,815,914
VMware (VMW) Emc Corp BO 118,000 $8,921,393
Mercer International (MERC) Kellogg Peter R BO 360,000 $1,829,400
Valueclick (VCLK) Zarley James R DIR 100,000 $999,000
Sandridge Energy (SD) Gilliland William A DIR 100,000 $472,730
Geeknet (GKNT) Langone Kenneth G CB,DIR 339,009 $439,840
Sandridge Energy (SD) Jordan Daniel DIR 75,000 $350,228
Eplus (PLUS) Hovde Eric D DIR,BO 15,322 $275,532
LHC Group (LHCG) Nixon Ronald T DIR 12,500 $257,011
Microsoft (MSFT) Gates William H III DIR 1,000,000 $25,073,100
Google (GOOG) Page Lawrence PR,DIR,
27,778 $13,659,287
WebMD Health (WBMD) Wygod Martin J CB 52,250 $2,708,118
Clean Harbors (CLH) Mckim Alan S CB,CEO,
33,000 $2,012,340
Verisk Analytics (VRSK) Dell Glen A DIR 47,250 $1,340,010
WebMD Health (WBMD) Manning James V DIR 25,276 $1,309,802
Gran Tierra Energy (GTE) Coffield Dana CEO,PR,
192,500 $1,156,050
Salesforce.Com (CRM) Benioff Marc CB,CEO,
10,000 $966,742
DST Systems (DST) Tritt Robert L VP 15,000 $645,000
Atmel (ATML) Lifsey Walter VP,COO 100,000 $601,861

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.