* Ex-Lehman Brothers' Herbert Moos to be CFO
* Senior VP Alexander Yastrib to head Risk department
* Shares up 3.3 percent
(Releads with company statement; adds new Risk chief, background)
MOSCOW, Sept 8 (Reuters) - Russia's No.2 lender VTB, struggling with losses, said on Tuesday it replaced its chief finance officer with ex-Lehman Brothers banker Herbert Moos and named a new Risk Department head.
Moos, who had been at Lehman Brothers for 14 years before joining VTB in 2008, will take over from Nikolai Tsekhomsky.
Alexander Yastrib, a VTB senior vice president, will be the new head of Risk, replacing Evgeny Novikov, who will continue to work for VTB in a new position, the company said on Tuesday.
Shares in VTB rose after the news, up 3.3 percent at 1052 GMT, outperforming the broad market index, which had gained 2.0 percent and flat against its larger peer Sberbank.
Analysts said Moos stepping in was positive news for VTB though did not expect significant changes.
"The changes of that level in the team do not mean the bank's business model as a whole to be changed," Natalia Orlova, analyst at Alfa Bank said.
Domestic media speculated that an internal conflict was behind Tsekhomsky's departure, but banking sources and source close to Tsekhomsky told Reuters he had not been sacked.
"We highly appreciate Nikolay Tsekhomsky's contribution to turning VTB into an international public financial group and wish him further success," Andrei Kostin, chairman of VTB's management board said in a press release.
Moos is currently CEO of VTB Capital, the investment banking arm of VTB Group. His last position at Lehman had been chief financial officer, Asia-Pacific ex-Japan, and treasurer, Asia-Pacific.
State-controlled VTB has posted a worse-than-expected net loss of 20.5 billion roubles ($648.7 million) for the first quarter of 2009 as bad loans have risen.
The government recently pumped 180 billion roubles ($5.70 billion) of fresh capital into the bank. ($1=31.60 Rouble) (Reporting by Dmitry Sergeyev and Oksana Kobzeva; editing by Rupert Winchester and Karen Foster)