A dark money nonprofit chaired by Black Lives Matter co-founder Patrisse Cullors has received a majority of its recent cash from a secretive fund used by Silicon Valley tech giants, filings show.

Cullors' nonprofit, Dignity and Power Now, pulled in $4.2 million in undisclosed contributions in 2020, its most recent tax forms show. But while the group does not identify its financial backers, Fox News Digital has discovered that $2.5 million of that amount was funneled through the Silicon Valley Community Foundation and into the BLM activist's social justice nonprofit.

"There is nothing 'dark' or non-transparent about money Fox was so easily able to identify the source and documentation for," said Mark-Anthony Clayton-Johnson, Dignity and Power Now's executive director.

Patrisse Cullors, one of the founders of Black Lives Matter, participates in a peaceful march in Hollywood, California, on June 7, 2020. (Francine Orr/ Los Angeles Times via Getty Images)

A "dark money" group is an entity that does not disclose its funding sources, and Cullors' nonprofit does not make its donors public. Fox News Digital's discovery of the $2.5 million in contributions was a result of browsing dozens of 990 tax forms of charitable foundations. The Silicon Valley money made up nearly 60% of its 2020 fundraising haul.