United States · Who invested in Bolt Threads?
Bolt Threads's investors include Founders Fund, Foundation Capital, Mission Bay Capital, Zygote Ventures and SVB Capital, and 6 more on record.
201520162017
$7.7MSeries A$32MSeries B$123MSeries DUnited States · Series D startup
Who invested in Bolt Threads
3 rounds we have observed, with the 11 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.
Funding summaryUpdated 26 Oct 2026
$163Mraised across 3 rounds since 2014, from 3 sources
$7.7MSeries A$32MSeries B$123MSeries D
- Latest round
- Series D, $123MJan 2017
- Step-upi
- 3.8×
- Investors
- 11
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $7.7M Nov 2014
- Biggest round
- $123M Series D · Jan 2017
- Usual gap between rounds
- 19 months the median of 2
The rounds
- Jan 2017Series D$123M4 new1 returning
Founders Fund
Temasek Holdings- Fidelity
Allen & Company- Baillie Gifford/ Formation 8
Reported by TechCrunch
- Jun 2015Series B$32M3 new3 returning
From a historical funding recordSEC filing: $32M sold, first sale Apr 2014
- Nov 2014Series A$7.7M4 new
From a historical funding record
Founders and team
From the SEC filings it signed: 2 on the team.
- Daniel WidmaierExecutive Officer, Directori
- Ethan MirskyExecutive Officeri
On the board, as filediDavid BreslauerJerry FiddlerJim KimSteven Vassallo
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.
Series A2014Series B2015Series D2017Founders Fund
Foundation Capital
Mission Bay CapitalZygote Ventures
SVB CapitalTemasek HoldingsFidelity
Formation 8Allen & CompanyAlafi Capital
Founders FundFoundation CapitalMission Bay CapitalZygote VenturesSVB CapitalTemasek HoldingsFidelityFormation 8Allen & CompanyAlafi CapitalEveryone who backed them
Zygote VenturesAngel network2rounds
FidelityVC firm1round
Alafi CapitalGrowth equity1round
Baillie Gifford/ Formation 8no record of our own yet1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Bolt Threads
How much has Bolt Threads raised?
Bolt Threads has raised $163M across 3 rounds since 2014.
When did Bolt Threads last raise?
Bolt Threads's most recent round was a Series D of $123M in Jan 2017.
What was Bolt Threads's biggest round?
Its most recent round, $123M in Jan 2017, is also its largest on record.
Who backed Bolt Threads first?
Bolt Threads's first round on record, in Nov 2014, was backed by SVB Capital, Foundation Capital and Mission Bay Capital and 1 others.
What stage is Bolt Threads at?
Bolt Threads's latest named round is a Series D, in Jan 2017.
Where is Bolt Threads based?
Bolt Threads is based in the United States.
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In the same sector, and raised in the last eighteen months.
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