Insiders Trading FB, PKY, RSG, CSX

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 Tuesday, May 22, 2012 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.

Republic Services (RSG) Cascade Investment BO 1,397,649 36,319,308
Hudson Pacific Properties (HPP) Farallon Capital BO 2,000,000 30,000,000
Kraton Perf Polymers (KRA) GMT Capital BO 38,900 772,943
Amyris (AMRS) Doerr L John DIR 211,864 499,999
Amyris (AMRS) Levinson Arthur D DIR 211,864 499,999
Parkway Properties (PKY) Heistand James R PR,CEO,DIR 35,000 358,660
Diamond Offshore Drilling (DO) Dickerson Lawrence R PR,DIR 5,000 296,610
Guidance Software (GUID) RGM Capital BO 30,684 259,202
Pulse Electronics (PULS) Faison Ralph E CB,PR,CEO 129,236 235,967
Genworth Financial (GNW) Riepe James S DIR 45,000 225,324
Source: Insider Insights
Facebook (FB) Zuckerberg Mark CB,CEO,BO 30,200,000 1,134,915,968
Facebook (FB) Thiel Peter DIR 16,844,316 633,009,344
Facebook (FB) Microsoft BO 6,556,925 246,422,352
Cedar Fair (FUN) Q Funding III BO 2,000,000 51,940,000
Intuit (INTU) Cook Scott D CB,DIR 200,000 10,923,707
Charter Communications (CHTR) Apollo Management Gp BO 141,636 8,868,804
CSX (CSX) Ward Michael J CB,PR,CEO 300,000 6,245,760
Validus Holdings (VR) Singh Alok DIR 119,072 3,744,469
Stryker (SYK) Stryker Ronda E DIR 27,000 1,379,039
Enterprise Products Partners (EPD) Zulim Thomas M VP 20,000 1,003,200
Source: Insider Insights

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.