Meta's Dave Wehner Leaves to Become CFO of Fireworks AI

Dave Wehner, who ran Meta's finances for eight years and served as its chief strategy officer since late 2022, is leaving the company to become chief financial officer of Fireworks, a four-year-old startup that trains and runs open AI models for businesses.

Wehner made the move public in a post on X on Friday night, writing that he had announced his exit from Meta earlier in the week. The Information had the hire as an exclusive. His departure ends a 14-year run at one of tech's largest companies and lands him inside one of the most contested corners of the AI infrastructure market: open-model inference.

The move matters beyond the personal career math. Fireworks sits at the center of a fast-consolidating inference market, one where startups such as Baseten and Together AI compete to run other companies' AI models at scale. A CFO who steered Meta through its trillion-dollar years is a signal about where seasoned operators think the next phase of AI value will be built.

What did Wehner say about leaving?

His own announcement leaned on the economics of open models. "Open models offer price points that allow the technology to have the greatest impact," he wrote on X. He added that he was "thrilled to be joining a founder-led growth company where I can roll up my sleeves and put my experience to work."

Fireworks CEO Lin Qiao told CNBC that Wehner will be responsible for scaling the company's finances and operations. She elaborated in a LinkedIn post that CNBC quoted: "Dave told me he wanted to get back to a smaller company where he could build toward a big impact again."

That framing fits the trajectory. Wehner joined Facebook in 2012 and became CFO in 2014, CNBC reported. A Meta filing from July 2022 shows he told the company that month he would move into a new chief strategy officer role effective November 1, 2022, with Susan Li, then vice president of finance, taking over as CFO.

Meta COO Javier Olivan acknowledged the departure in a statement to CNBC. Wehner "helped guide Meta through tremendous growth and complexity over 14 years, and brought disciplined thinking to some of our hardest company-level decisions," Olivan said. CNBC's report did not name a successor in the strategy job.

What is Fireworks, and why does the money matter?

Fireworks raised $1.505 billion in July at a $17.5 billion valuation, in a Series D led by Atreides Management, Index Ventures and TCV, with Nvidia among the participants. Those numbers place it firmly in the top tier of AI infrastructure startups, and they give Wehner a balance sheet built for aggressive expansion.

The company said at the time of the raise that it had passed $1 billion in annualized revenue run rate. It also disclosed serving more than 40 trillion tokens a day. More than 95% of those tokens come from models specialized on customers' own data, according to the company's announcement. Fireworks pointed to Cursor's coding models and Harvey's legal AI as examples of what gets built on its platform.

But the revenue base has shifted. About half of Fireworks' revenue came from Cursor as of last year, CNBC reported in July. That exposure narrowed when SpaceX agreed in June to buy Cursor in a $60 billion stock deal. Qiao told CNBC at the time: "We are much more diversified right now."

Fireworks has also been adding senior operators ahead of Wehner's arrival. The company hired former Salesforce executive George Hu as president in April.

Who is Lin Qiao?

Qiao knows Meta well. She is a former Meta director who started Fireworks in 2022 with six co-founders, according to CNBC. In a July interview at the company's San Mateo, California, headquarters, she put head count at around 200 and said she expected it to reach 600 by the end of the year — a tripling that would test any company's financial plumbing.

That growth plan explains why a CFO of Wehner's caliber is walking through the door. Scaling headcount, revenue and a capital-intensive inference business simultaneously is precisely the kind of challenge Wehner handled at Meta, where he oversaw finance through the company's heaviest infrastructure spending years.

How crowded is the inference market Wehner is entering?

Very. The startups CNBC listed as Fireworks' peers include Baseten and Together AI, both competing for the same enterprise inference workloads. The generative media inference company Fal raised $1.3 billion at a $16 billion valuation earlier this month, showing that investors continue to place large bets across specialized inference segments.

And Fireworks may not be done raising. Business Insider reported in October that the company was in early talks to raise again at a valuation of $30 billion to $40 billion — roughly double its July mark. If those talks conclude, Wehner would shepherd the round as his first major transaction in the seat.

What happens next?

Wehner's mandate is clear: build the financial architecture for a company that intends to grow from 200 people toward 600 while competing against well-funded rivals in a market where open models are increasingly the price-setting baseline. His bet, stated in his own words, is that open models' price points will let the technology reach its greatest impact — and that a founder-led company like Fireworks is where that impact gets built. Meta, meanwhile, must fill its chief strategy role without a named successor, closing out a 14-year chapter that spanned Facebook's mobile pivot, the metaverse rebrand and the AI buildout.