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, June 30, 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.

Kennedy Wilson Holdings (KW) Fairfax Financial BO 400,000 $4,280,000
Hydrogenics (HYGS) Commscope BO 611,247 $2,500,000
Red Lion Hotels (RLH) Columbia Pacific Opp Fund BO 27,300 $218,036
Nanosphere (NSPH) Slezak Mark DIR,BO 100,000 $169,540
Rentrak (RENT) Livek William Paul CEO,DIR 6,000 $106,030
Rentrak (RENT) Chemerow David I COO,CFO 5,500 $98,213
ZBB Energy (ZBB) Marathon Capital Management BO 97,250 $88,498
HCA Holdings (HCA) Bank Of America DIR,BO 2,471 $85,076
Valhi (VHI) Simmons Harold C CB,DIR
800 $39,600
Surrey Bancorp (SRYB) Wright C Hylton CB,DIR
1,900 $17,015
Guess (GES) Marciano Maurice CB,DIR
541,571 $22,794,266
Guess (GES) Marciano Paul VCB,CEO
200,000 $8,350,000
Affymax (AFFY) Laporte Kathleen DIR 746,818 $5,251,176
Cameron International (CAM) Erikson Sheldon R DIR 100,000 $4,947,600
Kellogg (K) Kellogg W K Foundation Trust BO 70,000 $3,868,158
LSB Industries (LXU) Golsen Jack E CB,CEO
61,785 $2,785,011
Semgroup (SEMG) BNP Paribas BO 95,916 $2,533,317
Dorman Products (DORM) Berman Steven L CEO,DIR
57,891 $2,199,858
Netsuite (N) Farrington Deborah A DIR 53,600 $2,091,475
Thor Industries (THO) Riegel Richard E III PR 70,000 $1,981,800

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.