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 Wednesday, February 09, 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.

Autonation (AN) Cascade Investment O 805,500 $25,415,764
Colony Financial (CLNY) Luxor Capital Group BO 71,030 $1,459,715
Boston Scientific (BSX) Mario Ernest DIR 50,000 $346,990
Dell (DELL) Breyer James DIR 20,000 $278,195
Cadence Design Systems (CDNS) Tan Lip Bu PR,CEO
25,000 $244,188
Contango Ore (CTGO) Gillen Donald BO 16,860 $193,890
Level 3 Communications (LVLT) Reed John T DIR 123,580 $152,003
Genworth Financial (GNW) Fraizer Michael D CB,PR
10,000 $128,100
Bitstream (BITS) Columbia Pacific Opp Fund BO 18,000 $124,734
RLI Corp (RLI) Kennedy Daniel O VP,GC 1,445 $80,423
Microsoft (MSFT) Gates William H III DIR 5,000,000 $140,991,504
TD Ameritrade (AMTD) TD Luxembourg Intl BO 986,786 $20,526,126
Riverbed Technology (RVBD) McCanne Steven CTO,DIR 200,000 $7,634,540
Corning (GLW) Volanakis Peter F PR,COO 229,571 $5,169,939
Bank Of The Ozarks (OZRK) Gleason George G II CB,CEO
115,801 $5,064,979
Stericycle (SRCL) Miller Mark C CB,CEO 55,259 $4,694,840
Dish Network (DISH) Defranco James VP,DIR 200,000 $4,434,000
Netlogic Microsystems (NETL) Godinho Norman DIR 76,805 $3,019,171
Netlogic Microsystems (NETL) Jankov Ronald Steven PR,CEO
75,000 $2,954,580
Estee Lauder (EL) Kunes Richard W VP,CFO 20,387 $1,851,719

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.