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 Friday 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.

Werner Enterprises (WERN) Werner Clarence L CB,DIR, BO 320,100 $6,393,229 CNA Financial (CNA) Tisch Andrew H DIR 100,000 $2,330,192 Camden Learning (CAEL) Camden Learning LLC BO 240,968 $1,908,467 Prospect Capital (PSEC) Barry John F CEO,DIR 87,536 $936,457 Del Global Technologies (DGTC) Steel Partners Holdings LP BO 1,702,543 $918,512 Boulder Growth & Inc Fund (BIF) Ernest Horejsi Trust No 1b BO 84,600 $481,402 Wal Mart Stores (WMT) Breyer James DIR 5,000 $269,532 USG (USG) Hernandez William H DIR 12,500 $177,872 Capitalsource (CSE) Fremder Andrew B DIR 37,500 $148,576 Center Bancorp (CNBC) Seidman Lawrence B DIR,BO 15,900 $131,087

Urban Outfitters (URBN) Hayne Richard A PR,DIR, BO 727,904 $24,134,588 Illinois Tool Works (ITW) Smith Harold B DIR 300,000 $14,872,830 IACInteractivecorp (IACI) Liberty Media Corp BO 325,200 $6,395,438 NBTY (NTY) Kamil Harvey CFO,PR 98,364 $4,251,107 EMC (EMC) Egan John R DIR 200,000 $3,474,000 Berkshire Hathaway (BRK.B) Bill & Melinda Gates Foundation Trust BO 900 $3,097,722 Steven Madden Ltd (SHOO) Madden Steven BO 73,000 $2,912,189 Corrections Corp Of America (CXW) Russell Joseph V DIR 98,800 $2,513,240 Continental Resources (CLR) Luttrell Tom E VP 41,951 $1,651,946 TD Ameritrade (AMTD) Moglia Joseph H DIR 55,000 $1,157,000

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.