Dan Beldy has left Hummer Winblad Venture Partners, where he had served as a general partner.

Andrew Gribble has joined HarbourVest Partners as an associate focused on primary partnerships. He recently co-founded a company that developed software for interactive television.

James Kirby joined Soros Fund Management. He previously served as a managing director with Madison Dearborn Capital Partners.

Tim Nickel has joined the Menlo Park, Calif.-based office of Spectrum Equity Investors as an associate. He most recently served as an analyst in Lehman Brothersí financial sponsors group.

Hugh Reinhoff has left his general partner position with Vanguard Ventures. Reinhoff joined Vanguard in July 2002, after having founded DNA Sciences Inc. and previously serving in senior investment positions with Abingworth Management and New Enterprise Associates.

Morton Bro Nielsen joined CapMan as an investment director of the Finland-based firmís life sciences investing team. He will focus on medical technology investments in Denmark.

Techno Venture Management, a venture capital firm with offices in Boston and Munich, promoted two of its principals. Stephen Hoffman has become a general partner, and Josef Moosholzer is now a venture partner.

Paul Melnuk, former managing partner of FTL Capital Partners, has been named CEO of Thermadyne Holding Corp. He has served on the companyís board of directors since May 2003 and was elected board chairman last October.

Geoffrey Grant, director of the Arlington Technology Incubator at the University of Texas, has joined the board of directors at Winnipeg-based Kane Biotech Inc.

Phillip Larson, a former partner with Capital Z Partners, has been named VP of operations with USI Holdings Corp.

William Crouse, a general partner with HealthCare Ventures, has joined the board of directors at ImClone Systems Inc. (Nasdaq: IMCL).

Pierre Lamond, a partner at Sequoia Capital, has been elected chairman of the board of directors at Sequoia portfolio company Tera Systems Inc.