American Management Systems Inc.

Larry R. Seidel, officer, sold 10,000 shares at $13.59 each on Dec. 2 and now holds 109,330.

Black & Decker Corp.

Edward J. Scanlon, officer, sold 375 shares at $41.43 each on Dec. 4 and now holds 8,460.

Capital Automotive REIT

David S. Kay, chief financial officer, sold 50,000 shares at $24.35 each on Dec. 2 and now holds 38,479.

FTI Consulting Inc.

Stewart J. Kahn, president, sold 78,000 shares at $39.67 each on Dec. 6 and now holds 3,292.

Guilford Pharmaceuticals Inc.

Solomon H. Snyder, director, bought 50,000 shares between $3.68 and $3.90 each on Dec. 5 and now holds 662,193.

Group 1 Software Inc.

Thomas S. Buchsbaum, director, sold 28,500 shares between $13.55 and $14.80 each from Dec. 5 to Dec. 9 and now holds 121,550.

Mark D. Funston, chief financial officer, sold 5,000 shares between $14.75 and $14.82 each on Dec. 4 and now holds 5,000.

GTSI Corp.

Linwood A. Lacy Jr., beneficial owner of more than 10 percent, sold 89,500 shares between $14.54 and $14.74 each from Dec. 3 to Dec. 5 and now holds 1,922,400.

Hanger Orthopedic Group Inc.

Eric A. Green, director, sold 866,614 shares between $11.49 and $12.75 each from Nov. 20 to Nov. 25 and now holds no shares.

On Site Sourcing Inc.

Jorge Raul Forgues, director, bought 1,000 shares at $1.85 each on Dec. 4 and now holds 1,000.

Jason A. Parikh, chief financial officer, bought 3,925 shares at $1.87 each on Dec. 2 and now holds 40,100.

Provident Bankshares Corp.

Gary N. Geisel, president, bought 500 shares at $22.57 each on Dec. 2 and now holds 10,836.

PEC Solutions Inc.

Alan H. Harbitter, chief technology officer, sold 15,000 shares between $37.30 and $37.38 each on Dec. 2 and now holds 3,003,750.

David C. Karlgaard, chief executive, sold 4,000 shares at $37.15 each on Dec. 2 and now holds 6,131,670.

RGC Resources Inc.

Orazio John S. D, officer, bought 1 shares at $18.10 each on Dec. 2 and now holds 1,754.

Howard T. Lyon, officer and treasurer, bought 2 shares at $18.10 each on Dec. 2 and now holds 1,257.

Dale P. Moore, officer, bought 1 shares at $18.10 each on Dec. 2 and now holds 234.

John B. Williamson III, chief executive, bought 27 shares at $18.10 each on Dec. 2 and now holds 6,853.

Sandy Spring Bancorp Inc.

Charles F. Mess, director, bought 470 shares at $31.55 each on Dec. 2 and now holds 11,266.

Southern Financial Bancorp Inc.

Neil J. Call, director, bought 161 shares at $29.70 each on Nov. 29 and now holds 8,262.

Sitel Corp.

James F. Lynch, chief executive, sold 31,200 shares at $1.70 each on Dec. 4 and now holds 5,284,410.

Tredegar Corp.

Douglas Roger Monk, chief operating officer, sold 1,844 shares at $13.98 each on Dec. 10 and now holds 48,661.

T. Rowe Price Group Inc.

M. David Testa, officer and director, sold 35,000 shares at $30.48 each on Dec. 4 and now holds 1,267,870.

Trex Co.

Anthony J. Cavanna, chief financial officer, sold 2,632 shares between $33.08 and $34.20 each on Dec. 3 and now holds 2,024,120.

Andrew U. Ferrari, officer, director and beneficial owner, sold 5,000 shares between $33.13 and $34.51 each from Dec. 3 to Dec. 4 and now holds 1,695,480.

Roger A. Wittenberg, officer, director and beneficial owner, sold 3,750 shares between $32.99 and $34.50 each on Dec. 5 and now holds 1,910,600.

United Defense Industries Inc.

Arthur L. Roberts III, officer, sold 15,000 shares at $23.03 each on Dec. 4 and now holds 77,563.

VSE Corp.

Calvin Scott Koonce, director, bought 750 shares at $9.42 each on Nov. 27 and now holds 462,471.

Watson Wyatt & Co. Holdings

David B. Friend, officer, sold 10,440 shares between $21.30 and $21.52 each on Dec. 5 and now holds 67,377.

-- Thomson Financial