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.

Encorium Group Inc.

Ilari Koskelo, beneficial owner, bought 3,937,500 shares at 40 cents Oct. 19 and now directly holds 5,167,680 shares.

EnerSys Inc.

Richard W. Zuidema, officer, sold 1,429 shares at $23.82 Oct. 21 and now directly holds 72,614 shares.

GSI Commerce Inc.

Michael G. Rubin, chief executive officer, sold 150,000 shares from $20.66 to $21.00 Oct. 23 to 26 and now directly holds 5,625,130 shares.

Knoll Inc.

Benjamin Angelo Pardo, officer, sold 5,000 shares at $10.50 and $10.51 Oct. 23 and now directly holds 66,824 shares.

SEI Investments Co.

Alfred P. West Jr., director and beneficial owner, sold 30,000 shares from $17.85 to $18.35 Oct. 23 to 27 and now directly holds 737,427 shares.

WSFS Financial Corp.

Calvert A. Morgan Jr., director, bought 500 shares at $27.79 Oct. 28 and now indirectly holds 6,575 shares.

SOURCES: Thomson Financial; Securities and Exchange Commission filings.