Advance Auto Parts Inc.

Lawrence P. Castellani, director, sold 350,000 shares between $58.90 and $59.52 each from May 23 to May 27 and now holds 19,086.

Jeffrey T. Gray, chief financial officer, sold 28,000 shares at $59.50 each on May 23 and now holds 20,000.

Eric M. Margolin, general counsel, sold 12,667 shares at $59.70 each on May 23 and now holds 21,603.

Shirley Lynn Stevens, chief technology officer, sold 33,333 shares at $59.44 each on May 23 and now holds 40,438.

American Capital Strategies Ltd.

Stan Lundine, director, sold 2,000 shares at $34.28 each on May 25 and now holds 8,382.

Gordon J. O'Brien, officer, sold 1,000 shares at $34.84 each on May 27 and now holds 14,736.

Amerigroup Corp.

Sherri E. Lee, former treasurer, sold 21,500 shares at $40.09 each on May 24 and now holds 5,468.

AvalonBay Communities Inc.

Lili F. Dunn, officer, sold 13,887 shares at $75.54 each on May 24 and now holds 28,884.

Leo S. Horey III, officer, sold 11,700 shares between $76.58 and $76.75 each on May 23 and now holds 45,246.

James Richard Morris, officer, sold 5,319 shares between $74.76 and $74.96 each on May 26 and now holds 11,150.

Black & Decker Corp.

Les H. Ireland, officer, sold 8,000 shares at $85.50 each on May 26 and now holds 26,127.

Michael D. Mangan, chief financial officer, sold 20,000 shares between $86.01 and $86.20 each on May 26 and now holds 36,586.

Paul F. McBride, officer, sold 25,000 shares between $86 and $86.36 each on May 26 and now holds 35,985.

Stephen F. Reeves, officer, sold 40,000 shares between $85.50 and $86.25 each from May 25 to May 26 and now holds 25,061.

Mark M. Rothleitner, officer and treasurer, sold 20,000 shares between $86.75 and $87.50 each from May 27 to May 31 and now holds 17,016.

Choice Hotels International Inc.

Joseph M. Squeri, chief financial officer, sold 15,056 shares between $64.50 and $64.98 each on May 24 and now holds 96,268.

Corporate Office Properties Trust

Randall M. Griffin, chief executive, sold 10,000 shares at $28.13 each on May 26 and now holds 403,077.

Clay W. Hamlin III, director, sold 2,500 shares at $28.15 each on May 25 and now holds 10,000.

Kenneth D. Wethe, director, sold 3,500 shares at $28.06 each on May 27 and now holds 5,525.

Digene Corp.

Armonk Partners, beneficial owner of more than 10 percent, sold 100,000 shares at $24.05 each on May 23 and now holds 3,471,400.

Dollar Tree Stores Inc.

John F. Megrue, director, sold 20,000 shares at $24.75 each on May 26 and now holds 40,000.

Alan L. Wurtzel, director, sold 10,000 shares between $24.95 and $25 each from May 27 to May 31 and now holds 5,799.

Dynex Capital Inc.

Thomas B. Akin, director, bought 10,000 shares between $7.34 and $7.38 each from May 24 to May 25 and now holds 153,808.

EPlus Inc.

Eric Donald Hovde, beneficial owner of more than 10 percent, bought 15,300 shares between $12.02 and $12.15 each from May 23 to May 24 and now holds 954,245.

Steven Donald Hovde, beneficial owner of more than 10 percent, bought 15,300 shares between $12.02 and $12.15 each from May 23 to May 24 and now holds 921,421.

Federal Agricultural Mortgage Corp.

Lowell Junkins, director, sold 1,666 shares at $18.23 each on May 26 and now holds 9,999.

Friedman, Billings Ramsey Group Inc.

Russell C. Lindner, director, bought 10,000 shares at $13.01 each on May 31 and now holds 32,216.

Gene Logic Inc.

J. Stark Thompson, director, bought 1,400 shares between $3.29 and $3.30 each on May 26 and now holds 4,600.

LandAmerica Financial Group Inc.

Charles H. Foster Jr., chief executive, sold 80,100 shares between $55.50 and $55.99 each from May 27 to May 31 and now holds 131,415.

Laureate Education Inc.

William C. Dennis Jr., officer, sold 2,361 shares at $48 each on May 24 and now holds 85,000.

Marriott International Inc.

John Willard Marriott Jr., chief executive, sold 123,900 shares between $66.51 and $67 each from May 24 to May 26 and now holds 22,372,400.

Nextel Communications Inc.

William G. Arendt, officer, sold 20,600 shares at $29.33 each on May 26 and now holds 69,496.

Stephanie M. Shern, director, sold 16,250 shares at $28.94 each on May 26 and now holds 11,064.

NII Holdings Inc.

Peter A. Foyo, officer, sold 25,000 shares between $55 and $55.17 each on May 23 and now holds 6,500.

Lodewijk A. Van Gemert, president, sold 32,500 shares at $57.69 each on May 26 and now holds 10,000.

NVR Inc.

David A. Preiser, director, sold 1,200 shares between $740 and $740.29 each on May 25 and now holds 1,925.

Online Resources Corp.

Joseph J. Spalluto, director, sold 3,570 shares at $10.13 each on May 27 and now holds 22,705.

RGC Resources Inc.

Dale P. Moore, officer, sold 1,000 shares between $25.70 and $25.85 each on May 26 and now holds 935.

Shenandoah Telecommunications Co.

Ken L. Burch, director, sold 5,547 shares between $31.28 and $31.60 each from May 24 to May 26 and now holds 84,796.

SI International Inc.

Ray J. Oleson, chief executive, sold 20,000 shares at $28 each on June 1 and now holds 190,980.

SLM Corp.

Charles L. Daley, director, sold 22,500 shares between $48.18 and $48.36 each on May 25 and now holds 37,590.

Benjamin J. Lambert III, director, sold 7,288 shares between $48.55 and $48.56 each on May 24 and now holds 76,689.

Kevin F. Moehn, officer, sold 13,438 shares at $48.60 each on May 24 and now holds 111,822.

Strayer Education Inc.

Robert R. Grusky, director, bought 300 shares between $86 and $86.40 each on May 25 and now holds 300.

Sunrise Senior Living Inc.

Ronald V. Aprahamian, director, sold 33,000 shares at $52 each from May 24 to May 27 and now holds 1,000.

Craig R. Callen, director, sold 10,000 shares at $52.11 each on May 26 and now holds 56,000.

Talk America Holdings Inc.

Gabriel A. Battista, director, sold 140,000 shares at $8.72 each on May 25 and now holds 20,001.

Warren Brasselle, officer, sold 40,000 shares at $8.72 each on May 25 and now holds 9,833.

Jeffrey Earhart, officer, sold 30,000 shares at $8.72 each on May 25 and now holds 4,768.

Aloysius T. Lawn IV, general counsel, sold 57,882 shares at $8.72 each on May 25 and now holds 128,332.

Timothy W. Leonard, chief technology officer, sold 50,000 shares at $8.72 each on May 25 and now holds 16,000.

Edward B. Meyercord III, chief executive, sold 43,709 shares at $8.72 each on May 25 and now holds 6,667.

Thomas M. Walsh, officer, sold 13,333 shares at $8.72 each on May 25 and now holds no shares.

David G. Zahka, chief financial officer, sold 50,000 shares at $8.72 each on May 25 and now holds 6,666.

Tessco Technologies Inc.

Discovery Group I. LLC, beneficial owner of more than 10 percent, bought 3,030 shares at $12.75 each on May 31 and now holds 478,330.

Trex Co.

Andrew U. Ferrari, director, sold 2,400 shares between $36.51 and $38.50 each from May 24 to May 25 and now holds 631,827.

Robert G. Matheny, chief executive, sold 5,000 shares between $38.27 and $38.63 each on May 27 and now holds 1,106,090.

United Dominion Realty Trust Inc.

Martha R. Carlin, officer, sold 10,333 shares at $23.31 each on May 24 and now holds 46,088.

Versar Inc.

Michael Markels Jr., director and owner, sold 2,000 shares at $3.11 each from May 24 to May 25 and now holds 808,331.

VSE Corp.

Bonnie K. Wachtel, director, sold 250 shares at $37.50 each on May 31 and sold 500 shares between $33 and $35.25 each from May 23 to May 27 and now holds 27,250.

-- Thomson Financial