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 Friday, June 10, 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.

Tesla Motors (TSLA) Kohler Herbert DIR 637,475 $18,333,780
Overseas Shipholding Group (OSG) Recanati Oudi DIR,BO 43,103 $1,077,575
Opko Health (OPK) Frost Phillip Md CEO,CB
88,959 $306,101
American Capital (ACAS) Harper Philip R DIR 20,000 $173,000
Cathay General Bancorp (CATY) Chung Nelson DIR 10,000 $149,900
Lihua International (LIWA) Zhu Jianhua CEO,PR
20,000 $124,465
Invesco Mortgage Capital (IVR) Balloun James S DIR 5,000 $112,868
First Bancorp (FBNC) Hollers Anna G VP,SEC 10,000 $99,000
Eaton (ETN) McMaken Kurt B VP,FO 2,000 $93,000
Mako Surgical (MAKO) Moll Frederic H DIR 3,000 $91,470
Mako Surgical (MAKO) Savarese John DIR 106,252 $3,169,452
Natures Sunshine Products (NATR) Delta Partners BO 145,125 $2,181,301
Washington Post (WPO) Graham Donald CEO,CB
4,224 $1,787,333
Mednax (MD) Hawkins Thomas W VP,GC
21,286 $1,483,394
BMC Software (BMC) Beauchamp Robert E CB,PR
25,649 $1,349,086
Dolby Laboratories (DLB) Dolby Ray BO 20,000 $887,198
Anthera Pharmaceuticals (ANTH) Orbimed Advisors DIR,BO 100,000 $810,130
Mednax (MD) Miller Frederick V Md PR 10,168 $705,775
Intermec (IN) Unitrin BO 64,349 $694,895
Volcano (VOLC) Quinoy Jorge J VP,SO 20,000 $581,816

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.