Securities trades recently reported to the Securities and Exchange Commission by officers, directors, and principal shareholders of corporations based or having sizable employment in the Philadelphia area. Titles are as reported to the SEC.

Aqua America Inc.

Christopher H. Franklin

, officer, sold 10,414 shares at $22.45 Dec. 16 and now directly holds 23,805 shares.

Bryn Mawr Bank Corp.

Geoffrey L. Halberstadt

, officer, sold 2,000 shares from $17.62 to $17.71 Dec. 16 and now directly holds 533 shares.

David E. Lees, director, bought 7,327 shares from $17.34 to $17.66 Dec. 15 to 17 and now directly holds 19,000 shares.

CDI Corp.

Joseph R. Seiders

, officer, sold 4,638 shares at $18.41 Dec. 20 and now directly holds 34,941 shares.

Central European Distribution Corp.

Carey William V

, chief executive officer, sold 67,300 shares from $25.25 to $28.59 Dec. 9 to 13 and now directly holds 3,949,350 shares.

Cigna Corp.

Matthew G. Manders

, officer, sold 13,320 shares at $37.20 and $37.21 Dec. 14 and now directly holds 46,290 shares.

Comcast Corp.

Lawrence J. Salva

, officer, sold 18,116 shares at $21.48 Dec. 17 and now directly holds 57,983 shares.

Crown Holdings Inc.

Timothy Joseph Donahue

, chief financial officer, sold 150,000 shares from $33.41 to $33.65 Dec. 16 and 17 and now directly holds 179,924 shares.

Discovery Laboratories Inc.

David L. Lopez

, general counsel, sold 17,000 shares at 21 cents Dec. 17 and now directly holds 309,556 shares.

Dorman Products Inc.

Steven L. Berman

, president, sold 4,400 shares at $40.08 Dec. 14 and now indirectly holds 2,334,030 shares.

DuPont Co.

James C. Borel

, officer, sold 41,200 shares at $49.41 Dec. 15 and now directly holds 162,923 shares.

Nicholas C. Fanandakis, chief financial officer, sold 13,800 shares at $49.10 Dec. 15 and now directly holds 42,357 shares.

Jeffrey L. Keefer, officer, sold 41,200 shares at $49.05 Dec. 15 and now directly holds 178,374 shares.

Mark P. Vergnano, officer, sold 25,320 shares from $49.36 to $49.41 Dec. 15 and now directly holds 96,647 shares.

FMC Corp.

Theodore H. Butz

, officer, sold 64,460 shares from $80.01 to $80.05 Dec. 14 to 16 and now directly holds 54,787 shares.

Harleysville Group Inc.

Arthur E. Chandler

, chief financial officer, sold 9,880 shares at $37.39 Dec. 16 and now directly holds 22,317 shares.

Mark R. Cummins, chief investment officer, sold 9,921 shares at $37.50 Dec. 16 and now directly holds 24,828 shares.

Innovative Solutions & Support Inc.

Ronald Albrecht

, chief financial officer, bought 3,000 shares at $5.30 Dec. 17 and now directly holds 3,000 shares.

InterDigital Inc.

Lawrence F. Shay

, officer, sold 7,810 shares at $38.88 Dec. 17 and now directly holds 36,377 shares.

Internet Capital Group Inc.

David J. Berkman

, director, sold 18,000 shares at $13.73 Dec. 17 and now directly holds 86,116 shares.

Kenexa Corp.

Donald Francis Volk

, chief financial officer, sold 48,000 shares from $22.38 to $22.66 Dec. 13 to 15 and now directly holds 63,924 shares.

Knoll Inc.

Andrew B. Cogan

, chief executive officer, sold 208,700 shares from $16.40 to $16.75 Dec. 17 to 20 and now directly holds 718,921 shares.

Kulicke & Soffa Industries Inc.

Ran Bareket

, officer, sold 16,956 shares at $7.57 Dec. 14 and now directly holds 10,687 shares.

Marlin Business Services Corp.

Lynne Carcia Wilson

, chief financial officer, sold 1,000 shares at $11.00 Dec. 13 and now directly holds 77,878 shares.

Met-Pro Corp.

Michael J. Morris

, director, sold 21,000 shares from $11.60 to $11.70 Dec. 14 to 16 and now directly holds 30,359 shares.

National Penn Bancshares Inc.

Albert H. Kramer

, director, bought 1,297 shares at $7.71 Dec. 17 and now directly holds 18,326 shares.

Wayne R. Weidner, director, bought 2,500 shares at $7.77 Dec. 16 and now directly holds 32,301 shares.

PhotoMedex Inc.

Paul J. Denby

, director, bought 12,000 shares from $5.32 to $5.75 Dec. 13 to 15 and now indirectly holds 228,334 shares.

James W. Sight, director, bought 7,077 shares at $5.75 Dec. 17 and now directly holds 188,077 shares.

Prudential Bancorp Inc. of Pennsylvania

Joseph W. Packer Jr.

, board chairman, bought 1,000 shares at $6.00 Dec. 17 and now directly holds 37,376 shares.

Quaker Chemical Corp.

Ronald J. Naples

, director, sold 23,900 shares from $41.50 to $43.00 Dec. 14 to 20 and now directly holds 91,260 shares.

Wilbert L. Platzer, officer, sold 8,825 shares at $42.00 Dec. 14 and 15 and now directly holds 23,814 shares.

SEI Investments Co.

Richard B. Lieb

, director, sold 10,000 shares at $24.02 Dec. 13 and now directly holds 486,181 shares.

TF Financial Corp.

John R. Stranford

, director, sold 875 shares from $21.85 to $22.25 Dec. 10 to 16 and now directly holds 124,389 shares.

ViroPharma Inc.

Robert Joy Glaser

, director, sold 5,000 shares at $16.75 Dec. 14 and now directly holds 36,860 shares.