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 Wednesday, Nov. 23, 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.

Kinder Morgan (KMI) Kinder Richard D CB,CEO
19,723,864 $499,999,968
Vector Group (VGR) Frost Phillip Md BO 5,648,122 $100,000,000
Lyondellbasell Industries (LYB) Apollo Management Holdings BO 675,000 $23,172,750
Kronos Worldwide (KRO) Simmons Harold C CB,DIR
335,332 $5,995,703
Genomic Health (GHDX) Baker Brothers Life Sciences Capital DIR,BO 193,739 $5,019,632
Pharmacyclics (PCYC) Baker Brothers Life Sciences Capital BO 242,498 $3,047,620
Transition Therapeutics (TTHI) Schuler Jack W BO 1,925,926 $2,600,000
Halozyme Therapeutics (HALO) Kirk Randal J DIR,BO 277,723 $2,230,109
Overseas Shipholding Group (OSG) Fribourg Charles DIR 193,000 $2,061,847
Sl Industries (SLI) SPH Group Holdings BO 62,210 $1,117,467
Vector Group (VGR) Icahn Carl C BO 10,836,000 $191,851,376
Dunkin Brands (DNKN) Bain Capital Investors Llc BO 6,213,892 $153,627,920
LinkedIn (LNKD) Deer VI & Co BO 1,250,000 $86,176,248
LinkedIn (LNKD) Greylock XI LP BO 1,230,050 $84,800,880
Intermolecular (IMI) Symyx Technologies BO 3,968,204 $39,682,040
LinkedIn (LNKD) Weiner Jeff CEO,DIR 372,917 $25,709,270
LinkedIn (LNKD) Sordello Steven J VP,CFO 98,232 $6,772,213
Horton DR (DHI) Tomnitz Donald J PR,CEO
176,475 $1,971,226
Gartner (IT) Valueact Holdings DIR 38,518 $1,425,936
Zillow (Z) Beitel David A CTO 33,000 $806,444

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.