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.

Editor's note: There were three buyers in SGMS; only two made it into the Top 10.

Adaptec (ADPT) Steel Partners II LP BO 610,970 $1,965,311
Mexico Fund (MXF) Clariond Eugenio DIR 75,000 $1,552,950
Parallel Petroleum (PLLL) Plll Acquisition Co. BO 414,965 $1,307,140
L 3 Communications (LLL) Millard Robert B DIR 10,000 $731,400
Guaranty Bancorp (GBNK) Eggemeyer John M III DIR,BO 200,000 $271,000
Pier 1 Imports (PIR) Greek Investments Inc BO 50,000 $185,735
Scientific Games (SGMS) Schwartz Barry F DIR 10,000 $141,800
Scientific Games (SGMS) Kennedy David L DIR 10,000 $137,600
Bemis (BMS) Seashore Gene H VP 5,000 $133,563
Tractor Supply (TSCO) Bingleman John C DIR 2,500 $113,525
Qwest Communications (Q) Anschutz Philip F BO 17,200,000 $59,615,200
Microsoft (MSFT) Gates William H III DIR 2,000,000 $56,593,800
Moodys Corp (MCO) Berkshire Hathaway Inc BO 1,152,627 $28,666,590
Interactivecorp (IACI)
Liberty Media Corp BO 345,500 $6,572,160
Berkshire Hathaway (BRK.B) Bill & Melinda Gates Foundation BO 892 $2,942,581
FMC Technologies (FTI) Kinnear Peter D CB,CEO,
52,560 $2,866,301
Riverbed Technology (RVBD) Kennelly Jerry M CB,CEO,
100,000 $2,096,423
Devry (DV) Hamburger Daniel CEO,PR 15,432 $888,272
Boston Scientific (BSX) Abele John E DIR 100,000 $823,055
Platinum Underwriters (PTP) Porter Robert S CEO 20,000 $724,062
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.