JOHN S. LETTOW

President
John brings both start-up experience and technical expertise to Vorbeck. John was a cofounder and manager of core technology development for H2Gen Innovations. He has performed research on nanostructured materials and materials process development while receiving a PhD in chemical engineering from MIT, an M.Phil in engineering from the University of Cambridge, and a BSE in chemical engineering (summa cum laude) from Princeton University. John has an MBA (with honors) from the Wharton School, University of Pennsylvania.

Gautham Krishnaiah

Chief Financial Officer and
Vice President of Engineering
Gautham brings over 20 years of process engineering and project finance experience in the chemical industry to the Vorbeck team. In his eight years with Grace Davison, Gautham was a project manager for the process scale-up and plant installation of new products. More recently, he has served in financial roles including business plan development, sales forecasting, and acquisition valuation. Previously, Gautham served as a Senior Principal Engineer for Stone & Webster Engineering Corp. in Houston, Texas. In this role, Gautham was responsible for plant design and commissioning as well as training plant staff and setting plant design guidelines. Gautham holds a Bachelors degree in chemical engineering from Osmania University of Technology (India), a Masters in chemical engineering from R.P.I., and an MBA from the Wharton School, University of Pennsylvania.

Kristen Silverberg

Chief Operating Officer
Kristen Silverberg recently served as U.S. Ambassador to the European Union. From 2005 to 2008, she served as Assistant Secretary of State for International Organization Affairs. She previously served in the White House as Deputy Assistant to the President and Advisor to the Chief of Staff. In 2003, she worked in Baghdad, Iraq as a Senior Advisor to Ambassador L. Paul Bremer.

Ambassador Silverberg formerly practiced law at Williams and Connolly, LLP in Washington, D.C., where she focused on complex commercial litigation. She was a law clerk to Justice Clarence Thomas of the U.S. Supreme Court and Judge David Sentelle of the U.S. Court of Appeals. She graduated from Harvard College and the University of Texas School of Law, where she graduated with high honors. She has been selected by the World Economic Forum as a Young Global Leader of 2009. She received the Secretary of Defense Award for Outstanding Public Service.