Zuckerberg Fights to Keep Trading Plan Details Under Court Seal

Facebook founder Mark Zuckerberg is urging a judge to keep a lid on the details of his stock trading plans ahead of a landmark trial set to open Wednesday over the Cambridge Analytica data scandal.

The tech titan moved Monday to shield the price thresholds that trigger his automatic sales under “safe harbor” plans designed to let corporate leaders access liquidity without insider trading liability. The public can understand the long-running shareholder litigation without that highly confidential information, he said in a court filing.

The plans “are based on a proprietary algorithm and trading strategy that was designed in part ...