By Jonathan Moreland, founder of InsiderInsights.com 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, January 24, 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.

Ardea Biosciences (RDEA) Baker Brothers Life Sciences Capital DIR,BO 355,585 $9,245,210
Ardea Biosciences (RDEA) Tang Kevin C DIR,BO 212,000 $5,512,000
J P Morgan Chase (JPM) Novak David C DIR 111,300 $4,995,445
Lawson Software (LWSN) Icahn Carl C BO 177,513 $1,621,519
Pacific Sunwear (PSUN) Greek Investments BO 336,279 $1,531,611
Ardea Biosciences (RDEA) 114159 Capital DIR,BO 9,815 $255,190
Bitstream (BITS) Columbia Pacific Opp Fund BO 19,942 $141,688
Winmark Corp (WINA) Zola Steven C PR 1,981 $66,633
Gainsco (GAN) Boulware Robert J DIR 5,532 $41,575
Atricure (ATRC) Discovery Group I BO 3,400 $35,674
Source: www.InsiderInsights.com
TD Ameritrade (AMTD) TD Luxembourg Intl BO 1,289,547 $26,371,418
Mastercard (MA) Mastercard Foundation BO 21,220 $4,958,327
Rand Logistics (RLOG) Ramius Llc BO 550,000 $2,750,000
Citigroup (C) Corbat Michael CEO 210,174 $1,003,481
Fairchild Semiconductor (FCS) Thompson Mark PR,CEO
DIR
60,000 $977,400
Synchronoss Technologies (SNCR) McCormick James M DIR,BO 25,000 $717,750
Mens Wearhouse (MW) Zimmer George CB,CEO
DIR
25,000 $657,143
State Street (STT) Oleary David C VP,CAO 9,637 $462,576
DDI Corp (DDIC) Miller Lloyd I III BO 38,270 $442,406
OCZ Technology (OCZ) Mei Alex VP,SO 50,000 $357,514
Source: www.InsiderInsights.com

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 InsiderInsights.com, 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 TheStreet.com 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.

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