Bluesky’s $100 M Series B Ignites a 43‑Million‑User Rocket as the CEO Trades Her Seat for a Lab Coat

Bluesky finally ripped the curtain off a $100 million Series B that sealed in April 2025, and the investor roll‑call reads like a crypto‑convention guest list: led by Bain Capital Crypto with Alumni Ventures, True Ventures, Anthos Capital, Bloomberg Beta, and the Knight Foundation all tagging along for the ride.

That fresh infusion rides on the coattails of a $15 million Series A dropped in October 2024 and an $8 million seed back in 2023, nudging the publicly disclosed war chest to roughly $123 million—though the valuation remains as mysterious as a private key left on a sticky note.

The news drops a week after CEO Jay Graber announced she’s swapping the corner office for a chief innovation officer title, leaving interim captain Toni Schneider at the helm while the board scouts for a permanent skipper—hopefully someone who can navigate both hype cycles and actual code.

Since that Series A, Bluesky’s user count has ballooned from 13 million to north of 43 million, and the AT Protocol now fuels a growing constellation of apps beyond the flagship client, including Skylight, Flashes, Surf, and the intriguingly named Blacksky.