By Jonathan Moreland, founder of Insider Insights 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 mainly open-market insider purchases and sales filed at the Securities and Exchange Commission Tuesday, December 06, 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.

Wright Medical (WMGI) OEPW Llc BO 144,826 $2,199,221
Pharmacyclics (PCYC) Baker Brothers Life Sciences Capital BO 88,197 $1,359,615
First Acceptance (FAC) Ford Gerald J BO 1,038,500 $1,090,425
United Therapeutics (UTHR) Rothblatt Martine A CEO,DIR 12,750 $538,508
Valley National Bancorp (VLY) Lenner Marc J DIR 42,000 $506,117
Snyder S Lance (LNCE) Warehime Michael A CB,DIR
15,531 $323,859
Novavax (NVAX) Young James F DIR 200,000 $292,000
FXCM (FXCM) Yusupov Eduard DIR 22,082 $220,232
Oneida Financial (ONFC) Michael R Kallet PR,CEO
23,588 $215,756
Merge Healthcare (MRGE) Merrick Ris Llc BO 25,000 $129,250
Douglas Dynamics (PLOW) Aurora Advisors BO 1,520,779 $21,671,100
Commvault Systems (CVLT) Hammer N Robert CB,PR
176,000 $8,880,123
IPG Photonics (IPGP) Gapontsev Valentin P CEO,CB
200,000 $8,110,582
Apollo Group (APOL) Sperling John G CB,DIR 103,929 $5,198,061
Fastenal (FAST) Kierlin Robert A DIR 100,000 $4,250,000
Simon Property Group (SPG) Simon Herbert CB,DIR 26,500 $3,277,613
Autonation (AN) Bill & Melinda Gates Foundation O 75,751 $2,765,631
Tech Data (TECD) Raymund Steven A DIR 52,700 $2,636,199
Apollo Group (APOL) Sperling Peter V VCB,DIR 51,952 $2,598,405
Primoris Services (PRIM) Pratt Brian CB,CEO
177,700 $2,552,457

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.