NEW YORK ( TheStreet.com) -- 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.

Hugoton Royalty Trust (HGT) Simpson Bob R CB 282,138 $3,960,971
World Fuel Services (INT) Clementi Michael PR 10,101 $474,227
Pier 1 Importsde (PIR) Greek Investments Inc DIR,BO 101,300 $265,933
MBIA CapitalClaymore Man Dur Inv Grd Muni Fd (MZF) Benchmark Plus Management LLC BO 20,900 $254,901
Tix (TIXC) Ashraf Iqbal BO 62,700 $201,533
Supergen (SUPG) Nb Public Equity Ks BO 66,342 $184,913
Infinera (INFN) Redfield Carl DIR 20,000 $139,000
Pixelworks (PXLW) Chan Tzoyao VP 20,000 $50,762
Iteris (ITI) Mohaddes Abbas CEO,DIR 20,000 $25,400
Vestin Realty Mortgage II (VRTB) Shustek Michael V CEO,PR,
DIR,BO
8,000 $20,367
TD Ameritrade Holding (AMTD) Ricketts Marlene M BO 1,725,790 $31,788,278
Dollar Tree (DLTR) Brock Macon F Jr CB,DIR 150,000 $7,550,250
Iron Mountain (IRM) Reese C Richard CB,DIR 183,900 $5,486,090
Kellogg (K) Kellogg W K Foundation Trust BO 113,000 $5,349,262
Knight Capital (NITE) Smyth James P VP 80,000 $1,642,560
Quixote (QUIX) Belgrave Investment Holdings Ltd BO 788,800 $1,617,300
Berkshire Hathaway (BRK) Bill & Melinda Gates Foundation Trust BO 300 $996,343
Cavium Networks (CAVM) Reddy C N DIR 45,994 $949,537
Trex (TWP) Ferrari Andrew U DIR 50,000 $938,425
Starwood Hotel (HOT) Prabhu Vasant M VP 30,000 $915,422
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.