Nscale adds former OpenAI exec Fidji Simo to its board ahead of potential IPO

Nscale, the U.K. AI data-center startup, has put Fidji Simo on its board alongside Sheryl Sandberg, Susan Decker, and Nick Clegg, with an IPO anticipated this fall. Simo was CEO of AGI deployment at OpenAI — framed in the TechCrunch write-up as essentially the No. 2 role — left in July citing health reasons, and still advises OpenAI part-time. Before that she took Instacart through its 2023 IPO and spent more than a decade at Meta, including as head of the Facebook app; she also sits on Shopify’s board.

Board composition is how pre-IPO companies tell markets what kind of company they want to be judged as. Nscale designs, builds, and operates AI data centers. Putting a consumer-platform operator who has already run an IPO next to Sandberg, Decker, and Clegg is a credibility stack aimed at public-market scrutiny, not a product launch.

We’re for the infrastructure useful AI actually needs. We’re also clear-eyed when a two-year-old builder loads the board with household names ahead of a raise the street is already sizing in the billions.

Our take: this is governance theater with a real résumé behind it — and the résumé is the point.

Founder and CEO Josh Payne’s statement leans hard on scale: Simo as one of the few leaders who understand products used by billions and the systems underneath. That’s the pitch Nscale needs. Hyperscale AI campuses fail or win on operations, capital discipline, and customer trust as much as on rack density. A board that has shipped at Meta, Instacart, and OpenAI is meant to answer the question public investors always ask of infrastructure startups: who has seen this movie at planet scale?

I’m not reading Simo’s July exit from OpenAI as a scandal on the facts we have — health reasons, continued part-time advising. I am reading the timing. She left a frontier lab in the summer; by September she’s on a U.K. data-center board racing an autumn IPO. That path is normal for elite operators. It also concentrates OpenAI-adjacent judgment into the private compute layer just as that layer tries to go public.

Bloomberg, citing unnamed sources, reported last week that Nscale is trying to raise up to $3.5 billion ahead of the planned IPO. We treat that figure as reported, not confirmed. Even as a rumor it sets the stakes: this board is being built for a flotation where independence, financial rigor, and operating depth — Payne’s own words — will be tested in filings, not press releases.

If Nscale clears an IPO with this roster, the template spreads: AI infra companies will keep importing consumer-tech governors to look public-ready. The downside if it scales carelessly is a market that prices celebrity boards over power interconnects and delivery risk. Useful compute still deserves capital. It also deserves boards that sweat megawatts and contracts as hard as they sweat brand names.

Nscale’s valuation has climbed fast since a founding only about two years ago on demand for AI infrastructure. The company sits in the same capital weather as every other AI campus builder: booming demand, scarce power, and investors hunting for the next public vehicle after the lab names. Simo’s Shopify board seat and Instacart IPO experience are the financial-markets credentials this slate was missing in public perception, even with Sandberg, Decker, and Clegg already listed.