Advisory Board Co.

Joseph E. Laird Jr., director, sold 3,000 shares at $53.08 each on Aug. 2 and now holds 47,416.

Albemarle Corp.

John G. Dabkowski, officer, sold 7,875 shares between $37.50 and $37.52 each on Aug. 8 and now holds 21,302.

American Capital Strategies Ltd.

Roland H. Cline, officer, sold 15,000 shares between $39.13 and $39.15 each on Aug. 5 and now holds 47,211.

John R. Erickson, chief financial officer, sold 8,600 shares between $39.08 and $39.34 each from Aug. 5 to Aug. 8 and now holds 56,408.

Gordon J. O'Brien, officer, sold 44,000 shares between $39.06 and $39.25 each on Aug. 5 and now holds 14,736.

Ira J. Wagner, chief operating officer, sold 2,000 shares at $38.75 each on Aug. 5 and now holds 41,109.

Amerigroup Corp.

Jeffrey L. McWaters, chief operating officer, sold 64,916 shares at $34.71 each on Aug. 1 and now holds 60,000.

Anteon International Corp.

Joseph M. Kampf, chief executive, sold 12,800 shares at $46.15 each on Aug. 1 and now holds 511,513.

Capital One Financial Corp.

Richard D. Fairbank, chief executive, sold 2,538 shares between $84.36 and $85 each on Aug. 9 and sold 15,228 shares between $82.98 and $84.30 each from Aug. 1 to Aug. 8 and now holds 2,387,070.

Larry A. Klane, officer, sold 8,664 shares between $84.20 and $84.90 each on Aug. 8 and now holds 57,615.

David R. Lawson, officer, sold 27,831 shares at $84 each on Aug. 4 and now holds 84,938.

Catherine G. West, officer, sold 13,082 shares at $85 each on Aug. 8 and now holds 86,879.

Cardinal Financial Corp.

J. Hamilton Lambert, director, bought 5,882 shares at $10.40 each on Aug. 2 and now holds 66,198.

Choice Hotels International Inc.

Wayne Wielgus, officer, sold 1,550 shares between $66.77 and $66.80 each on Aug. 3 and now holds 40,114.

Columbia Bancorp

Brian K. Israel, officer, sold 3,000 shares at $41.22 each on Aug. 9 and now holds 834.

Corporate Office Properties Trust

Karen Miller Singer, general counsel, sold 8,000 shares at $33.94 each on Aug. 2 and now holds 10,247.

Coventry Health Care Inc.

Bernard J. Mansheim, officer, sold 24,000 shares at $74.60 each on Aug. 9 and now holds 96,702.

Digene Corp.

Armonk Partners, beneficial owner of more than 10 percent, sold 16,000 shares between $30.45 and $31.25 each on Aug. 3 and now holds 3,439,400.

Dominion Resources Inc.

Mark J. Kington, director, bought 2,000 shares between $76.21 and $76.24 each on Aug. 5 and now holds 5,514.

Paul D. Koonce, officer of subsidiary company, sold 33,333 shares between $76 and $76.35 each on Aug. 8 and now holds 37,964.

Duratek Inc.

Robert E. Prince, chief executive, sold 2,236 shares at $24.53 each on Aug. 1 and now holds 223,343.

EPlus Inc.

Eric Donald Hovde, beneficial owner of more than 10 percent, bought 9,550 shares at $12.83 each on Aug. 5 and now holds 1,162,620.

Steven Donald Hovde, beneficial owner of more than 10 percent, bought 9,550 shares at $12.83 each on Aug. 5 and now holds 1,129,800.

Federal Realty Investment Trust

Walter F. Loeb, director, sold 2,500 shares at $63.25 each on Aug. 5 and now holds 13,815.

Hanger Orthopedic Group Inc.

George E. McHenry Jr., chief financial officer, sold 1,443 shares at $7.52 each on Aug. 3 and now holds 43,557.

Ivan R. Sabel, chief executive, sold 7,500 shares between $7.52 and $7.63 each on Aug. 3 and now holds 204,061.

Brian Wheeler, officer, sold 816 shares at $7.52 each on Aug. 3 and now holds 17,184.

HealthExtras Inc.

David T. Blair, chief executive, sold 12,500 shares between $20 and $20.66 each on Aug. 1 and now holds 98,000.

Michael P. Donovan, chief financial officer, sold 5,000 shares between $20 and $20.66 each on Aug. 1 and now holds 140,700.

Lafarge North America Inc.

Todd Cunningham, officer, sold 4,000 shares between $68.51 and $70.25 each from July 29 to Aug. 4 and now holds 0.

Eric C. Olsen, chief financial officer, sold 8,000 shares at $69.80 each on Aug. 2 and now holds 2,028.

LandAmerica Financial Group Inc.

Eugene P. Trani, director, sold 4,135 shares between $61.45 and $62.56 each from Aug. 3 to Aug. 4 and now holds 3,573.

Legg Mason Inc.

Richard J. Himelfarb, officer, sold 24,400 shares at $106.28 each on Aug. 2 and now holds 304,331.

Robert G. Sabelhaus, officer, sold 16,800 shares at $105.18 each on Aug. 2 and now holds 274,861.

Roger W. Schipke, director, sold 6,000 shares between $104.61 and $106.50 each on Aug. 2 and now holds 27,000.

Marriott International Inc.

Stephen P. Weisz, officer, sold 33,025 shares between $69.15 and $69.19 each from Aug. 2 to Aug. 3 and now holds 4,016.

Media General Inc.

John Stewart Bryan III, chairman, sold 48,900 shares between $68.14 and $68.53 each from July 27 to Aug. 1 and now holds 1,021,420.

MicroStrategy Inc.

Sanju K. Bansal, chief operating officer, sold 26,556 shares between $75.30 and $78.46 each from Aug. 2 to Aug. 5 and now holds 50,000.

Jonathan F. Klein, general counsel, sold 7,000 shares between $77.50 and $77.62 each on Aug. 1 and now holds 23,362.

Eduardo S. Sanchez, officer, sold 30,000 shares between $75.41 and $76.88 each on Aug. 1 and now holds 842.

Micros Systems Inc.

Louis M. Brown Jr., director, sold 10,000 shares at $41.99 each on Aug. 1 and now holds 119,260.

Municipal Mortgage & Equity LLC

Mark K. Joseph, chairman, sold 7,500 shares at $26.02 each on Aug. 8 and now holds 273,147.

Nextel Communications Inc.

William G. Arendt, officer, sold 7,338 shares at $34.15 each on Aug. 9 and now holds 62,158.

Timothy M. Donahue, chief executive, sold 933,000 shares at $34.55 each on Aug. 5 and now holds 487,628.

Owens & Minor Inc.

Mark A. Van Sumeren, officer, sold 9,840 shares between $29.28 and $30.09 each from Aug. 3 to Aug. 5 and now holds 14,283.

Portfolio Recovery Associates Inc.

Craig A. Grube, officer, sold 4,829 shares between $42.15 and $42.84 each from Aug. 1 to Aug. 3 and now holds 67,025.

SafeNet Inc.

Thomas A. Brooks, director, sold 2,000 shares at $34.35 each on Aug. 1 and now holds 3,300.

Shelley A. Harrison, director, sold 5,000 shares at $33 each on Aug. 8 and now holds 103,334.

Bruce R. Thaw, director, sold 4,000 shares at $34.62 each on Aug. 2 and now holds 220,000.

SI International Inc.

Stephen Bradford Antle, president, sold 8,000 shares between $31.90 and $32.22 each from July 26 to Aug. 2 and now holds 26,676.

James E. Crawford III, director, sold 15,925 shares between $31.24 and $31.62 each from July 28 to Aug. 1 and now holds 337,728.

Thomas E. Dunn, chief financial officer, sold 4,000 shares between $32 and $32.25 each from Aug. 3 to Aug. 4 and now holds 41,069.

Ray J. Oleson, chief executive, sold 10,000 shares between $31.12 and $31.55 each on Aug. 1 and now holds 183,347.

Strayer Education Inc.

Todd A. Milano, director, bought 1,585 shares at $100 each on Aug. 5 and now holds 10,691.

Sunrise Senior Living Inc.

Larry E. Hulse, officer of subsidiary company, sold 15,000 shares at $57.62 each on Aug. 4 and now holds 24,826.

TeleCommunication Systems Inc.

Maurice B. Tose, chief executive, sold 12,800 shares between $2.66 and $3.08 each from July 28 to Aug. 4 and now holds 434,552.

T. Rowe Price Group Inc.

James T. Brady, director, sold 7,000 shares between $64.98 and $65.07 each on Aug. 5 and now holds 3,000.

James Sellers Riepe, officer and director, sold 160,375 shares between $67.40 and $67.49 each on Aug. 2 and now holds 1,915,170.

Anne Marie Whittemore, director, sold 8,439 shares at $66.30 each on Aug. 4 and now holds 3,361.

United Therapeutics Corp.

Frederick T. Hadeed, chief financial officer, sold 2,944 shares at $69.16 each on Aug. 4 and now holds 1,000.

Roger Jeffs, president, sold 3,500 shares at $69.16 each on Aug. 4 and now holds 13,063.

Paul A. Mahon, general counsel, sold 2,000 shares at $69.16 each on Aug. 4 and now holds 12,000.

Martine A. Rothblatt, chief executive, sold 2,000 shares at $69.16 each on Aug. 4 and now holds 371,358.

Universal Security Instruments Inc.

Michael L. Kovens, beneficial owner of more than 10 percent, sold 3,800 shares at $17.53 each on Aug. 5 and now holds 328,919.

Varsity Group Inc.

Mayfield Fund IX LP, beneficial owner of more than 10 percent, sold 10,491 shares at $5.57 each from Aug. 4 to Aug. 5 and now holds 2,134,270.

Mayfield IX Delaware LP, beneficial owner of more than 10 percent, sold 5,500 shares at $5.57 each on Aug. 8 and now holds 2,128,770.

Allen L. Morgan, director, sold 14,184 shares at $5.57 each from Aug. 4 to Aug. 8 and now holds 2,151,940.

VSE Corp.

Jimmy D. Ross, director, sold 1,500 shares at $36.40 each on Aug. 4 and now holds 7,417.

Bonnie K. Wachtel, director, sold 250 shares at $37.70 each on Aug. 2 and now holds 27,000.

Washington Real Estate Investment Trust

Robert W. Pivik, trustee, bought 500 shares between $30.35 and $30.36 each on Aug. 5 and now holds 1,000.

WGL Holdings Inc.

Douglas V. Pope, officer, sold 7,850 shares at $32.55 each on Aug. 9 and now holds 5,711.

-- Thomson Financial