United States · 
Who invested in Sphere?
Sphere's investors include Y Combinator, Andreessen Horowitz, Right Side Capital Management, Felicis and Pioneer Fund, and 8 more on record.
20252026
$5.0MVenture$21MSeries A$3.0MSeed$1.5MVentureUnited States · Venture startup
Who invested in Sphere
4 rounds we have observed, with the 13 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised 4 months agoY Combinator: W22
Follow Sphere and see its new rounds in your feed. Start following
Funding summaryUpdated 5 Nov 2026
$31Mraised across 4 rounds since 2024, from 5 sources
$5.0MVenture$21MSeries A$3.0MSeed$1.5MVenture
- Latest round
- Venture, $1.5MJul 2026
- Biggest round
- $21MSeries A · Nov 2025
- Investors
- 13 (1 led)
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Venture, $5.0M Dec 2024
- Biggest round
- $21M Series A · Nov 2025
- Usual gap between rounds
- 12 months the median of 2
The rounds
- Jul 2026
- Jun 2026
- Nov 2025Series A$21M5 new1 returning
Reported by TechCrunchSEC filing: $412K sold, first sale Oct 2025
- Dec 2024Venture$5.0M5 new
Source recorded and 1 other
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Venture2024Series A2025Seed2026Venture2026
Y Combinator
Andreessen HorowitzL
Right Side Capital Management
Felicis
Pioneer Fund
Coinbase Ventures
Forum Ventures
Big Brain Holdings
TCG
20VC
Y CombinatorAndreessen HorowitzLRight Side Capital ManagementFelicisPioneer FundCoinbase VenturesForum VenturesBig Brain HoldingsTCG20VCThe exit
ExitBuyerPriceWhen
From historical deal records. Wrong? Tell us.
Everyone who backed them
YCVC firm1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Sphere
How much has Sphere raised?
Sphere has raised $31M across 4 rounds since 2024.
When did Sphere last raise?
Sphere's most recent round was a Venture of $1.5M in Jul 2026.
What was Sphere's biggest round?
Sphere's largest round on record is $21M (Series A), in Nov 2025, led by Andreessen Horowitz.
Who backed Sphere first?
Sphere's first round on record, in Dec 2024, was backed by Y Combinator, Coinbase Ventures and Big Brain Holdings and 2 others.
What stage is Sphere at?
Sphere's latest named round is a Venture, in Jul 2026.
Where is Sphere based?
Sphere is based in the United States.
Who led Sphere's rounds?
Andreessen Horowitz led the Series A in 2025.
Companies like Sphere
In the same sector, and raised in the last eighteen months.
Find investors like these
Search every investor by what they have actually funded, then narrow to your stage and market. Free.