By Olivia WilliamsMay 24, 2026 Business Sergey Brin Invests $500,000 in San Francisco’s Heated Fight Over “Overpaid CEO Tax” Measures C and D Sergey Brin has contributed $500,000 to oppose San Francisco’s Measures C and D, aimed at the so-called “Overpaid CEO Tax.” The funding escalates tensions in the city’s fierce tax policy debate.