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 open-market insider purchases and sales filed at the Securities and Exchange Commission Wednesday, May 25, 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.

Texas Industries (TXI) Longleaf Partners BO 121,680 $4,639,495
VMware (VMW) EMC BO 31,567 $2,998,302
China Biotics (CHBT) Value Holdings Capital BO 200,000 $1,914,044
Concho Resources (CXO) Keenan W Howard Jr DIR 20,000 $1,806,402
FXCM (FXCM) Brown James DIR 100,000 $901,002
Berkshire Bancorp (BERK) Marx Moses DIR,BO 98,223 $661,138
MFA Financial (MFA) Korth Timothy W VP,GC 62,000 $500,960
Harvest Natural Resources (HNR) Speirs Robert VP 44,600 $499,074
Lihua International (LIWA) Zhu Jianhua CEO,PR
DIR
40,000 $298,852
Boston Private Financial (BPFH) Thompson Mark D CEO 45,454 $293,070
Source: www.InsiderInsights.com
Intuit (INTU) Cook Scott D CB,DIR 500,000 $26,514,492
Metropcs Communications (PCS) TA Associates DIR 300,000 $5,288,480
Validus Holdings (VR) Singh Alok DIR 99,670 $3,195,610
Teradata (TDC) Koehler Michael PR,CEO
DIR
39,000 $2,103,153
Southwestern Energy (SWN) Dewbre Jimmy R VP 35,000 $1,498,076
Pricesmart (PSMT) Price Charities BO 32,802 $1,388,440
CF Industries (CF) Davisson William DIR 8,218 $1,212,199
Stryker (SYK) Stryker Ronda E DIR 18,000 $1,123,487
Dolby Laboratories (DLB) Dolby Ray BO 20,000 $947,494
Anthera Pharmaceuticals (ANTH) Vantagepoint Venture Associates BO 111,649 $941,863
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.