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 Monday, Dec. 20, 2010 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.

Dell (DELL) Dell Michael S CB,CEO
7,370,000 $100,002,056
Pacific Sunwear (PSUN) Greek Investments BO 151,829 $850,062
Hain Celestial (HAIN) Icahn Carl C BO 27,000 $747,539
Tejon Ranch (TRC) Stine Robert A PR,CEO
22,500 $608,083
General American Investors (GAM) Neidich Daniel DIR 15,000 $394,506
NN (NNBR) Zupan Thomas G VP 30,000 $314,253
Sonic Foundry (SOFO) Burish Mark D DIR 15,000 $205,950
Avatar Holdings (AVTR) Nash Joshua Lionel CB,DIR 10,000 $176,450
NTN Buzztime (NTN) Berg Jeffrey Alan DIR 510,000 $173,500
Bitstream (BITS) Columbia Pacific Opp Fund LP BO 21,371 $154,071
Dril Quip (DRQ) Reimert Larry E CB,DIR 64,266 $5,009,662
Joy Global (JOYG) Sutherlin Michael W PR,CEO
53,000 $4,523,238
Murphy Oil (MUR) Deming Claiborne P DIR 57,037 $4,112,938
MetroPCS Communications (PCS) TA Associates DIR 300,000 $3,688,430
Illinois Tool Works (ITW) McCormack Robert C DIR 62,100 $3,216,861
Kinetic Concepts (KCI) Leininger James R Md DIR,BO 54,924 $2,276,102
Sapient (SAPE) Moore J Stuart DIR,BO 148,672 $1,804,747
Fastenal (FAST) Slaggie Stephen M DIR 30,000 $1,767,918
Salesforce.Com (CRM) Benioff Marc CB,CEO
10,000 $1,342,165
Park Ohio Holdings (PKOH) Mixon Aaron Malachi III DIR 62,103 $1,319,293

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.