The New York-based asset manager voted against 255 directors in the period ended June 30, up from 55 a year earlier, according to a stewardship report released Tuesday. It also failed to support the management of 319 companies for climate-related reasons, compared with 53 in 2020.Overall, BlackRock said it supported 35% of 843 shareholder proposals that it voted on in the recent proxy season, up from 17% in the previous year. Of those, it backed about two thirds of the environmental resolutions, and about a third of the social and governance proposals, according to the report. Last year, BlackRock said it supported 11% of the environmental proposals, 7% of the social resolutions and 20% on governance.