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, April 17, 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.

Erickson Air Crane (EAC) Q&U Investments BO 3,150,000 25,200,000
Universal Stainless & Alloy Products (USAP) Pennant Capital BO 18,638 817,194
Valhi (VHI) Simmons Harold C CB,DIR,BO 4,000 204,925
Encision (ECIA) CMED Partners BO 100,000 100,000
Pacira Pharmaceuticals (PCRX) Pace Gary W DIR 10,000 97,500
Pope Resources (POPE) Dahl James H BO 1,500 65,491
Digital Cinema Destinations (DCIN) Mayo A Dale CEO,CB,
10,000 56,100
Hurco Companies (HURC) Sivanesan Janaki DIR 2,000 53,503
Mosaic (MOS) Koenig Emery N DIR 1,000 50,249
Bank Of South Carolina (BKSC) Hutson Richard W Jr SEC,DIR 4,300 48,994
Source: Insider Insights
Limited Brands (LTD) Redgrave Martyn R VP 67,250 3,222,279
Oxford Industries (OXM) Lanier J Reese Sr DIR 18,570 838,594
Take Two Interactive (TTWO) Slatoff Karl COO 51,635 738,060
JPMorgan Chase (JPM) Bisignano Frank O 15,000 657,380
Sturm Ruger (RGR) Reid Kevin B Sr VP,GC 12,500 619,460
Conns (CONN) Grandchilds Trust Two BO 30,000 529,158
Invivo Therapeutics (NVIV) Langer Robert BO 200,000 479,598
Ultra Petroleum (UPL) Nance Stuart Evan O 20,000 369,739
Sothebys (BID) Ruprecht William F PR,CEO,DIR 7,000 263,488
Leapfrog Enterprises (LF) Mollusk Holdings BO 30,000 247,200
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.