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 Thursday, May 31, 2012 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.

Furiex Pharmaceuticals (FURX) Eshelman Fredric N DIR,BO 168,752 3,359,621
Palomar Medical (PMTI) Broadwood Partners BO 236,801 1,929,931
Acelrx Pharmaceuticals (ACRX) Skyline Venture Partners DIR,BO 284,698 967,973
Intermountain Comm Banc (IMCB) Stadium Capital Mgt DIR,BO 784,948 784,948
Windstream (WIN) Gardner Jeffery R PR,CEO,DIR 31,750 292,084
Gannett Co (GCI) McFarland Duncan M DIR 20,000 258,820
Opko Health (OPK) Frost Phillip MD et al CEO,CB,BO 35,000 162,841
Vocus (VOCS) Burns Kevin J DIR 10,000 152,700
Solar Senior Capital (SUNS) Gross Michael S CEO,PR,DIR 8,655 142,570
Hercules Offshore (HERO) Bates Thomas R Jr DIR 40,000 137,000
Source: Insider Insights
DSW (DSW) Schottenstein Jay L CB,DIR,BO 390,000 23,474,408
Google (GOOG) Schmidt Eric E CB,DIR 26,693 15,681,006
Centurylink (CTL) Ousley James E CEO,OO 150,000 5,899,605
Validus Holdings (VR) Singh Alok DIR 119,499 3,768,282
Active Network (ACTV) Green L Stephen DIR 215,000 3,043,502
Infinity Pharmaceuticals (INFI) Holtzman Steven H DIR 200,261 2,603,393
Intermolecular (IMI) Presidio Management IX BO 338,500 2,217,344
Liquidity Services (LQDT) Mateus Tique Jaime DIR 33,000 2,094,000
Fortinet (FTNT) Xie Michael VP,CTO,DIR 54,000 1,174,348
Endeavour International (END) Steelhead Partners O 137,053 1,145,243
Source: Insider Insights

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.