Natsource, an investment firm focused on renewable energy and reducing carbon emissions, named three ex-Bear Stearns managers to head its efforts in risk management, marketing and compliance. All had worked within Bear Stearns Asset Management (BSAM).

John Geissinger became chief risk officer, a spokeswoman for New York-based Natsource told Pensions & Investments. Geissinger was chief invesment officer in Bear's investment management subsidiary. Evan Kerr, who was a managing director and principal at BSAM, joined Natsource as head of marketing and product development. Natsource'snew chief compliance officer is Frederick Shaw, formerly a supervisor and branch manager at BSAM.

Natsource also hired former congressional aide Thomas Lawler as director of public policy and hired Kevin Brennan from ABN Amro as its manager of commercial paper operations, according to Pensions & Investments. Lawler worked for Sen. Thomas R. Carper, D-Del., as principal adviser on clean air and climate change issues. Brennan was a hedge fund product specialist in ABN Amro's asset management business.