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Mark joined TL in 1994. Mark¡¯s venture capital experience began in 1981, when he helped launch a biomass venture backed by General Electric¡¯s venture capital group using technology developed at the University of Pennsylvania. He followed that start-up by joining Ecogen, a Princeton-based microbial pesticide venture funded by Domain and Vista Ventures that later went public.

In 1986, Mark joined Fidelity Bank to start-up and lead a corporate finance activity. While at Fidelity, Mark helped invest bank capital as a limited partner in numerous private equity funds. He also helped create an S.B.I.C., Fidelcor Capital, to invest in early-stage and technology companies.

Mark¡¯s investment interests are varied and run the gamut from software to business services to communications and energy. He has served on 50 public and private company boards.

Recognizing that the energy and utility industries were ripe for early-stage investing capable of generating venture-type returns, in 1996 Mark established EnerTech Capital, a private equity activity targeting those markets. Likewise, Mark led a group of TL colleagues as founding investors in Peak6, a highly successful options trading firm in Chicago. More recently, Mark led the launch of a mezzanine lending activity known as Penn Mezzanine. Penn Mezzanine targeted credit-worthy borrowers with revenue under $100 million in the Pennsylvania and mid-Atlantic region.

He graduated with a BS degree from Boston College and an MBA degree from the Harvard Graduate School of Business Administration.