As of 2020, Rosenberg serves as vice chair of the board of directors of Thousand Currents, a non-profit foundation[28] that raises funds and provides institutional support for grassroots groups, particularly in the Global South.[29]
However, fact checkers can't deny Thousand Currents has provided funding and other support to BLM.
Fact checkers will nail you on that last part.
According to Wikipedia -
However, fact checkers can't deny Thousand Currents has provided funding and other support to BLM.