Black employees make up just 4 per cent of Tesla Inc's American leadership roles and 10 per cent of its total workforce in the country, the electric carmaker has disclosed in its first US diversity report.

Women comprise 17 per cent of the company's US leadership roles - directors and vice presidents - and 21 per cent of the overall workforce, according to the report. The figures for Asian, Black and Hispanic people combined are 33 per cent and 60 per cent.

The carmaker noted, though, that leadership roles were a "very small cohort", or less than 0.4 per cent, of its workforce.

Elon Musk's Tesla, whose meteoric rise has seen it become the most valuable auto company in the world and worth about $550 billion, acknowledged the lack of representation.

"We know that our numbers do not represent the deep talent pools of Black and African American talent that exist in the U.S at every level – from high-school graduates to professionals," it said in the Diversity, Equity and Inclusion Impact Report here 2020 published on Friday.

"While women are historically underrepresented in the tech and automotive industries, we recognize we have work to do in this area," it added.

Tesla, based in Palo Alto, California, said it planned to increase representation of all under-represented groups next year and would be recruiting at historically Black colleges and universities.

Nasdaq Inc filed a proposal with the US Securities and Exchange Commission on Tuesday that, if approved, would require all Nasdaq-listed companies to adopt new rules related to board diversity.

The rules would require most of the companies to have, or publicly explain why they do not have, at least two diverse directors, including one who self-identifies as female and one who self-identifies as either an underrepresented minority or LGBTQ+.