Calpine Insiders Buy $23 Million Worth

Which insiders are selling and buying chunks of stocks?

Below are lists of the top 10 open-market insider purchases and sales filed at the Securities and Exchange Commission on Thursday 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!

Dollar value is only one metric to assess the importance of an insider transaction, however. For more value-added tables on a weekly basis, and fundamentally researched investment ideas inspired by insiders, subscribe to TheStreet.com's InsiderInsights newsletter. Whether you're a growth, value, income, momentum, or microcap investor, insider data can help you find great investment ideas.

Company Name (Ticker) Filer Name Title(s) Shares
Bought
Dollar
Value
Calpine (CPN) Spo Advisory Corp 
BO
1,234,300
$12,881,560
Autozone (AZO) Lampert Edward S 
BO
117,000
$12,424,230
Calpine (CPN) Spo Advisory Corp 
BO
1,300,000
$11,895,000
Greenfield Online (SRVY) Microsoft Corp 
BO
164,080
$2,871,400
Atlas America (ATLS) Cobalt Capital Mgt Inc 
BO
70,000
$1,439,900
Linn Energy Llc (LINE) Jacobs Terrence S 
DIR
91,000
$1,196,301
Prospect Capital (PSEC) Barry John F 
CEO,DIR
70,000
$906,265
International Speedway (ISCA) Capital Circle Group LP
BO
16,000
$424,713
Sinclair Broadcast (SBGI) Smith Robert E 
DIR,BO
100,000
$378,720
Kapstone Paper (KPPC) Elm Ridge Capital Mgt LLC
BO
50,000
$243,329
Company Name (Ticker) Filer Name Title(s) Shares
Sold
Dollar
Value
Boston Scientific (BSX) Abele John E 
DIR
1,000,000
$9,331,663
Enersys (ENS) Gendell Jeffrey L Et Al 
BO
347,507
$4,661,928
Quicksilver Resources (KWK) Morris Steven M 
DIR
108,700
$1,054,120
Leucadia National (LUK) Jordan James E 
DIR
25,000
$916,787
Monsanto Co New (MON) Steiner Gerald A 
VP
9,000
$828,000
Wabash National Corp De (WNC) Gendell Jeffrey L Et Al 
BO
87,000
$656,850
MKS Instruments (MKSI) Bertucci John R 
DIR
35,000
$625,663
Apartment Investment (AIV) Considine Terry 
CB,CEO,DIR
29,705
$594,326
Natus Medical (BABY) Nierenberg David 
BO
26,547
$539,170
Life Partners Holdings (LPHI) Pardo Family Holdings Ltd 
BO
15,000
$527,250
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, 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.
Source: InsiderInsights.com

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Jonathan Moreland is director of research and publisher of the weekly publication InsiderInsights, founder of the Web site InsiderInsights.com and the director of research at Insider Asset Management LLC. 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.

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