In this paper we summarize the framework and the results of the fourth edition of the International Symbol Recognition Contest, organized in the context of GREC'11. The contest follows the series started at the GREC'03 workshop and it is the first time that, in addition to recognition of isolated symbols, the contest includes the evaluation of symbol spotting. In this report we describe the evaluation framework - including datasets and evaluation measures - and we summarize the results obtained by the only participant method.