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 Thursday 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.

Stone Tan China Acquisition (STTA) Spac Trust BO 55,693 $442,737
Stone Tan China Acquisition (STTA) Stone Roger W CB,DIR,BO 37,130 $295,162
Webmedia Brands (WEBM) Meckler Alan M CB,CEO,
100,000 $66,500
Union Bankshares (UBSH) Beale G William CEO,PR,DIR 1,900 $25,175
Capital Southwest (CSWC) Peterson Jeffrey G VP 150 $11,579
Sunrise Telecom (SRTI) Wc Capital Management LLC BO 7,573 $6,268
Mgp Ingredients (MGPI) Rindom David E VP 922 $3,642
First Century Bankshares (FCBS) Chambers James Richard DIR 200 $3,350
Southside Bancshares (SBSI) Garrett John Robert DIR 62 $1,438
Cbiz (CBZ) Gerard Steven L CEO,DIR 164 $1,175
Guess (GES) Marciano Paul VCB,CEO,
300,000 $10,825,350
Neurogesx (NGSX) SVLSF IV LLC BO 615,000 $4,920,005
GSI Commerce (GSIC) Rubin Michael CEO,PR,DIR 207,596 $3,970,718
Berkshire Hathaway (BRK) Bill & Melinda Gates Foundation BO 1,110 $3,735,541
Amazon.Com (AMZN) Szkutak Thomas J CFO,VP 20,000 $1,800,000
Oceaneering International (OII) Collins T Jay CEO,PR,DIR 29,800 $1,750,781
Medassets (MDAS) Claudius LLC BO 55,854 $1,239,155
Gartner (IT) Silver Lake Tech Investors BO 67,134 $1,164,775
Contango Oil & Gas (MCF) Peak Kenneth R CB,CEO,
21,414 $1,001,319
Westinghouse Air Brake (WAB) Kassling William E DIR 25,000 $980,950
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.