# Proposition 40

Type: Company

Source: Startup Intelligence Brief — https://getstartupbrief.com/entity/proposition-40
Canonical HTML page: https://getstartupbrief.com/entity/proposition-40

## Recent coverage (2 stories)

### Brin's $102M Anti-Wealth-Tax Push Puts CA Startup Wealth at Risk
2026-08-13 04:06:15 · Sentiment: Neutral · Impact: 5/10 · Sources: 2

California's Proposition 40 would tax billionaire net worth, potentially hitting startup founders and early employees sitting on unrealized gains. Sergey Brin's $102 million counter-campaign shows how the state's wealthiest tech leaders are mobilizing to protect founder economics.
Full story: https://getstartupbrief.com/story/brin-102m-california-startup-wealth-tax

### Brin's $102M Prop 40 Battle: Will a 5% Wealth Tax Drive Founders Out of CA?
2026-08-11 13:12:04 · Sentiment: Neutral · Impact: 6/10 · Sources: 5

Sergey Brin's $102 million campaign against California's Proposition 40 could determine whether a one-time 5% billionaire wealth tax reshapes the startup ecosystem. The outcome may influence founder residency decisions, capital availability, and the state's reputation as a venture hub.
Full story: https://getstartupbrief.com/story/brin-102m-prop-40-startup-impact

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