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.

Adolor Corp.

Claude H. Nash

, director, bought 30,000 shares at $3.70 April 20, and now directly holds 30,000 shares.

Ametek Inc.

Frank S. Hermance

, chief executive officer, sold 6,300 shares at $36.50 April 23, and now directly holds 1,283,670 shares.

Isaac S. Smalls, officer, sold 3,000 shares at $36.49 April 23, and now directly holds 36,942 shares.

CollaGenex Pharmaceuticals Inc.

James Gregory Ford

, officer, sold 5,000 shares at $14.23 April 18, and the holdings were not reported.

Commerce Bancorp Inc.

Daniel J. Ragone

, director, sold 6,300 shares at $34.17 April 18, and now directly holds 265,814 shares.

IGI Inc.

Frank Gerardi

, director and beneficial owner, bought 5,700 shares at 80 cents to 84 cents April 23 to April 24, and now directly and indirectly holds 1,415,950 shares.

Innovative Solutions & Support Inc.

State Teachers Retirement System of Ohio

, beneficial owner, sold 613,000 shares at $22.50 to $25 April 17 to April 20, and now directly holds 1,663,550 shares.

Knoll Inc.

Barry L. McCabe

, chief financial officer, sold 25,200 shares at $24.30 to $24.80 April 16, and now directly holds 189,740 shares.

PNC Financial Services Group Inc.

Michael J. Hannon

, officer, sold 15,574 shares at $75.49 to $75.54 April 20, and now directly holds 44,824 shares.

Timothy G. Shack, chief technology officer, sold 84,723 shares at $75 to $75.29 April 23, and now directly holds 88,976 shares.

Public Service Enterprise Group Inc.

Robert J. Dougherty Jr.

, officer, sold 2,650 shares at $88.41 April 18, and now directly holds 8,970 shares.

Elbert C. Simpson, officer, sold 2,000 shares at $90 April 23, and now directly holds 14,607 shares.

Royal Bancshares of Pennsylvania Inc.

Robert R. Tabas

, board chairman, sold 3,750 shares at $23.20 April 23, and now directly holds 59,025 shares.

Suncom Wireless Holdings Inc.

Eric Haskell

, chief financial officer, sold 45,000 shares at $1.70 to $1.76 April 17, and now directly holds 292,500 shares.

J.P. Morgan Partners 23A SBIC L.P., beneficial owner, sold 712,500 shares at $1.70 April 20, and now directly and indirectly holds 16,291,800 shares.

Michael E. Kalogris, chief executive officer, sold 1,000,000 shares at $1.68 to $1.80 April 17 to April 24, and now directly holds 2,532,410 shares.

WPCS International Inc.

Austin W. Marxe and David M. Greenhouse

, beneficial owner, sold 34,200 shares at $12.86 to $13.06 April 18 to April 23, and now indirectly holds 15,797,700 shares.

Donald C. Walker, officer, sold 2,207 shares at $12 April 18, and now directly holds 54,674 shares.

SOURCES: Thomson Financial; Securities and Exchange Commission filings