Tesla directors to return $735 million to compensate for overpayment.
Settlement resolves a 2020 lawsuit with a retirement fund over stock options.
Elon Musk and Tesla known for successful legal battles.
Directors won't receive compensation for 2021-2023.
Tesla argues stock options aligned with investor objectives.
Shareholder filed lawsuit against Musk's pay deal in 2019.
Directors awarded themselves 11 million stock options from 2017-2020.
Directors deny wrongdoing, settle to avoid further litigation.
Uncertainty, risk, burden, and expense cited in settlement filing.
10. Case adds to Tesla's reputation for legal controversies and growth.