Sierra Funding: $950M Raised, Series C (2026)

Sierra is an AI Infrastructure company based in San Francisco, California. It has raised $950M in total funding. Latest round: Series C.

Sierra funding overview

Sierra is an AI Infrastructure company based in San Francisco, California. Sierra has raised $950M in total disclosed funding. That places its disclosed total in the $250M–$1B range. Its most recent disclosed round is a Series C announced in May 2026. The round record for Sierra runs through 2026; nothing later has been disclosed. Investors on record include Tiger Global, Google (GV), Sequoia Capital, Benchmark, Greenoaks Capital, Thrive Capital and 1 others. 7 distinct backers are named across the disclosed rounds.

Sierra at a glance

Total raised
$950M
Latest round
Series C
Latest round date
May 2026
Industry
AI Infrastructure
Headquarters
San Francisco, California
Notable investors
Tiger Global, Google (GV), Sequoia Capital, Benchmark, Greenoaks Capital, Thrive Capital, ICONIQ

Frequently asked about Sierra funding

How much has Sierra raised?
Sierra has raised $950M in total disclosed funding across the rounds on record.
Who has invested in Sierra?
Tiger Global, Google (GV), Sequoia Capital, Benchmark, Greenoaks Capital, Thrive Capital are named among the investors backing Sierra.
What was the latest Sierra funding round?
The most recent disclosed round is a Series C, announced in May 2026.
Where is Sierra based?
Sierra is based in San Francisco, California.
What sector does Sierra operate in?
Sierra is tracked under AI Infrastructure from San Francisco, California, with $950M in disclosed funding.
When did Sierra last raise?
The last disclosed Sierra round closed in May 2026 at Series C.

We update the Sierra record whenever a new round is filed or announced, so the totals above track the public record rather than estimates. Related AI Infrastructure companies in San Francisco and their backers are listed below.

Sierra founders (1)

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Company funding database · Investor directory · Founder database · Mega-rounds 2026