Black & Decker Corp.

Benjamin H. Griswold IV, director, bought 10,000 shares at $67.45 each on July 27 and now holds 28,715.

Columbia Bancorp

Scott C. Nicholson, officer, sold 2,000 shares between $27.23 and $27.28 each on July 23 and now holds 13,392.

Circuit City Stores Inc.

Gary M. Mierenfeld, officer, sold 93,744 shares between $13.90 and $13.94 each on July 27 and now holds 59,216.

Cardinal Financial Corp.

William Eric Peterson, director, bought 32,000 shares between $9.05 and $9.16 each on July 19 and now holds 98,000.

Danaher Corp.

James H. Ditkoff, officer, sold 24,000 shares between $50.55 and $50.87 each on July 26 and now holds 201,518.

Eagle Bancorp Inc.

Dudley C. Dworken, director, bought 35 shares at $19.40 each on July 27 and now holds 26,319.

Hilb, Rogal & Hobbs Co.

Robert S. Ukrop, director, sold 4,000 shares at $33.10 each on July 27 and now holds 94,654.

Legg Mason Inc.

Raymond A. Mason, chief executive, bought 75 shares at $78.43 each on July 26 and now holds 2,503,319.

Roger W. Schipke, director, sold 9,998 shares between $77.58 and $78.43 each from July 21 to July 26 and now holds 20,010.

Marriott International Inc.

Simon F. Cooper, officer, sold 1,936 shares at $49.62 each on July 20 and now holds 4,055.

Richard E. Marriott, beneficial owner of more than 10 percent, sold 33,500 shares at $50 each on July 21 and now holds 21,319,700.

Medifast Inc.

Michael C. Mac Donald, director, bought 1,000 shares at $3.58 each on July 28 and now holds 36,854.

Scott Zion, officer and director, bought 10,000 shares at $3.55 each on July 28 and now holds 185,000.

Mercantile Bankshares Corp.

Anthony W. Deering, director, bought 22,000 shares at $44.99 each on July 22 and now holds 25,000.

Novavax Inc.

Ford R. Lynch, officer, bought 4,300 shares between $4.55 and $4.60 each on July 26 and now holds 4,300.

Nelson M. Sims, chief executive, bought 13,500 shares between $4.47 and $4.71 each on July 26 and now holds 13,500.

Owens & Minor Inc.

Richard F. Bozard, officer, sold 3,200 shares at $25.46 each on July 27 and now holds 27,504.

G. Gilmer Minor III, chief executive, sold 11,587 shares between $25.54 and $25.60 each from July 27 to July 28 and now holds 530,306.

Portfolio Recovery Associates Inc.

Steven D. Fredrickson, chief executive, sold 3,000 shares at $28.10 each on July 23 and now holds 440,385.

Kevin P. Stevenson, chief financial officer, sold 3,000 shares at $26.60 each on July 26 and now holds 196,860.

Sandy Spring Bancorp Inc.

James H. Langmead, officer, sold 4,500 shares at $31.31 each on July 27 and now holds 5,920.

Sunrise Senior Living Inc.

Thomas B. Newell, president, sold 12,000 shares at $35.67 each on July 22 and now holds 132,710.

Stanley Furniture Co.

Albert L. Prillaman, chairman, sold 36,500 shares between $42.05 and $43.74 each from July 20 to July 23 and now holds 213,400.

Trex Co.

Anthony J. Cavanna, director and owner, sold 8,974 shares between $36.88 and $37.49 each from July 19 to July 20 and now holds 1,590,450.

Andrew U. Ferrari, director, sold 5,000 shares between $40.83 and $42.60 each on July 23 and now holds 962,427.

United Dominion Realty Trust Inc.

Mary Ellen Norwood, officer, sold 6,667 shares between $19.96 and $20.10 each on July 21 and now holds 3,000.

The Washington Post Co.

Donald E. Graham, chief executive, sold 150 shares at $856 each on July 23 and now holds 156,421.

-- Thomson Financial