Mark Zuckerberg’s fight over a possible California wealth tax began behind closed doors in July, when he started negotiating with Meta’s board over how he could meet a potential bill without selling down the supervoting shares that underpin his control of the company.¹

The stakes rose at a Sept. 9 dinner with directors. Zuckerberg said he would publicly list his Palo Alto home on Sept. 13 unless a deal was reached—a 96-hour deadline that put the board under intense pressure and underscored the unusual leverage held by Meta’s founder.¹

The concern was Proposition 40, a ballot measure due before California voters next month. It would impose a one-time 5% levy on the holdings of billionaires who were California residents as of Jan. 1, 2026. For Zuckerberg, whose wealth was estimated at roughly $247 billion, that could mean a tax bill nearing $12.5 billion. Selling his existing Meta shares to cover it could cut his voting power to 53%, according to company filings.¹

On Wednesday, Meta unveiled its answer: a new, non-voting Class C share class to be issued in January. The structure is designed to give Zuckerberg up to $20 billion in immediate liquidity if the measure passes, without increasing his ownership or reducing his control. In return, he agreed to remain in California—or another jurisdiction housing Meta’s headquarters—for eight years, absent unforeseen circumstances.²

Meta’s special committee cast the arrangement less as a tax shelter than a corporate necessity, saying it was “critically important” for Zuckerberg to lead the company close to Silicon Valley and its Meta Superintelligence Labs.² The company also says the stock class will preserve the “founder-led model” behind its success while giving Meta flexibility to finance growth.³

That rationale matters as Meta pours money into AI and data centers, reporting $34.91 billion in third-quarter capital expenditures. The transaction effectively operates as a two-for-one split for existing shareholders—but its most consequential effect is simpler: it keeps the founder’s voting grip intact while insulating him from California’s political gamble.³