Social-networking service Twitter has named Ali Rowghani as its first CFO. Rowghani, who currently holds the top finance spot at Pixar Animation Studios, will join Twitter in March.
L. Heath Sampson is the new head of finance at SquareTwo Financial. Previously, he was CFO of the Financial Services subsidiary of First Data Corp.
GreenVolts Inc. has named Uday Bellary to lead the finance function. He comes to the company, a developer of concentrating photovoltaic (CPV) technology, from Atrica, where he also served as CFO.
David Scoglio is taking over as CFO of Asure Software, a workforce-management software provider. Formerly, he was a senior director of finance at Fidelity Investments.
Magellan Petroleum Corp. has named William Begley Jr. CFO and treasurer. He replaces Daniel Samela, who has resigned from his posts as CFO, treasurer, and chief accounting officer, but will stay at Magellan as vice president-new ventures. Begley is a former president of Stone & Webster Management Consulting.
Karen Cambray has been tapped to head finance at Mall Networks Inc., a loyalty shopping-solutions provider. She comes to the company from Zeemote, where she also held the top finance spot.
Digital-mapping provider Intermap Technologies has promoted Brian Musfeldt to finance chief. Musfeldt, whose appointment becomes effective March 1, joined the company in 2006 and has served as corporate controller since that time. He succeeds Richard Mohr, who will stay on at Intermap until February 28.
Bill Bush has been appointed to the top finance spot at Borrego Solar Systems Inc., which designs and installs solar power systems. He is a former CFO of Solar Semiconductor Inc.
Material Sciences Corp. has promoted director of finance James Pawlak to the posts of CFO, corporate controller, and corporate secretary. Pawlak, who joined the firm in 1990, replaces James Froisland as CFO and corporate secretary and Robert Rogowski as corporate controller.
Don Turkleson has been named CFO of Laurus Energy. Previously, he headed finance at Cheniere Energy Inc.