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 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.
Westport Innovations (WPRT) Douglas Kevin BO 60,000 $1,002,000
Navistar International (NAV) Clariond Eugenio DIR 19,000 $760,646
Mercer International (MERCS) Kellogg Peter R BO 100,000 $570,290
Boulder Growth Inc Fund (BIF) Ernest Horejsi Trust No 1b BO 61,826 $397,036
Presstek (PRST) Kellogg Peter R BO 59,006 $214,792
Saul Centers (BFS) Saul B Francis II CEO,DIR,BO 5,200 $197,046
Nustar Gp Holdings Llc (NSH) Greehey William E DIR,BO 6,500 $188,429
Van Kampen Muni Opp Trust (VMO) Dammeyer Rodney F DIR 7,100 $95,976
Pennymac Mort Inv Trust (PMT) Carnahan Scott W DIR 5,000 $84,247
Van Kampen Select Sector Muni Trust (VKL) Dammeyer Rodney F DIR 6,717 $79,977
Source: www.InsiderInsights.com
Commerce Bancshares (CBSH) Kemper David W CB,CEO,DIR 472,525 $18,791,327
Patriot Coal (PCX) Caisse De Depot Et Placement Du Quebec BO 766,091 $15,325,412
Chordiant Software (CHRD) Wadhwani Romesh BO 1,829,974 $9,094,971
J P Morgan Chase (JPM) Black Steven D VCB 168,574 $7,417,256
Wal Mart Stores (WMT) Scott H Lee Jr CB,DIR 102,367 $5,669,238
Evercore Partners (EVR) Taylor Bernard J VCB 172,588 $5,537,902
Cameron International (CAM) Erikson Sheldon R DIR 100,000 $4,424,840
Kirkland S (KIRK) Kirkland Carl DIR,BO 150,000 $3,084,540
Pre Paid Legal Services (PPD) Smith Thomas W BO,BO 74,500 $2,901,480
Reliance Steel Aluminum (RS) Gimbel Thomas W DIR 50,000 $2,428,000
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, 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.

More from Opinion

Red Hat CFO Tells TheStreet: Tech Trends Are Still in Our Favor

Red Hat CFO Tells TheStreet: Tech Trends Are Still in Our Favor

Throwback Thursday: Intel Edition

Throwback Thursday: Intel Edition

Intel's Next CEO Should Try Harder to Protect Its Flanks Against AMD and Others

Intel's Next CEO Should Try Harder to Protect Its Flanks Against AMD and Others

3 Warren Buffett Stock Picks That Could Be Perfect for Your Retirement Portfolio

3 Warren Buffett Stock Picks That Could Be Perfect for Your Retirement Portfolio

Wednesday Wrap-Up: GE and Facebook

Wednesday Wrap-Up: GE and Facebook