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 Wednesday 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.

Shaw Group (SHAW) Bernhard James M Jr CB,CEO,
PR,DIR
250,000 $6,424,106
Online Resources (ORCC) Tennenbaum Capital Partners LLC BO 450,000 $2,281,433
First Bancorp Pr (FBP) Aleman Aurelio CEO,PR,DIR 100,000 $186,660
Harris Interactive (HPOL) Fingerhood Steven L DIR 100,000 $96,960
1st Source (SRCE) Murphy Christopher J III CB,CEO,
DIR,BO
5,000 $71,650
Quality Systems (QSII) Barbarosh Craig A DIR 1,000 $59,447
Nurx Pharmaceuticals (NUXP) Baradaran Sharyar DIR 200,000 $50,000
Nurx Pharmaceuticals (NUXP) Padma-nathan Harin DIR 200,000 $50,000
Trans1 (TSON) Dann Mitchell DIR 12,500 $49,973
Compass Diversified Holds (CODI) Massoud I Joseph O 2,848 $29,983
Microsoft (MSFT) Gates William H III DIR 3,000,000 $83,528,700
Google (GOOG) Shriram Kavitark Ram DIR 6,900 $3,650,655
Berkshire Hathaway (BRK.B) Bill & Melinda Gates Foundation BO 1,100 $3,645,847
EResearchtechnology (ERES) Blum Capital Partners LP BO 359,397 $2,665,203
Radio One (ROIAK) Fine Capital Partners LP BO 1,400,000 $2,520,000
Sourcefire (FIRE) Roesch Martin F DIR,
CTO
105,000 $2,082,146
Mednax (MD) Calabro Joseph M PR,
COO
37,350 $2,043,172
Cameron International (CAM) Erikson Sheldon R DIR 36,256 $1,424,444
Danaher Corp (DHR) Ditkoff James H VP,
FO
19,353 $1,365,712
Athenahealth (ATHN) Hull Brandon H DIR 31,000 $1,228,650

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, 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.
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.