In a letter, some skeptical backers of the EV company have also asked its board to add a “new, truly independent” member and lay out a succession plan.

Pension funds holding Tesla stock want CEO Elon Musk to get back to work. A group of institutional investors holding approximately 7.9 million shares of Tesla signed a letter to the electric vehicle maker’s board chair Robyn Denholm, asking the company to reform corporate governance and address deficiencies in the board’s oversight.

Musk told an economic gathering that he wants to own more shares of the company in order to hold greater sway in key decisions.