Attorney; 1906 deleg, 4th (Amalgamative) Russian Social-Democratic Workers’ Party Congress. After 1906 left Social-Democratic movement. After 1917 February Revol chairman, Military Section, Peotrgrad Soviet and member, Petrograd Executive Committee.
Member, Russian Soviet Federative Socialist Republic Central Executive Committee of 1st convocation. After 1917 October Revol, chairman, Coalition Cabinet in Vladivostok. Later worked as an economics in Moscow.
Arrested by State Security organgs.