United States · 
Who invested in Ark?
Ark's investors include Y Combinator, Andreessen Horowitz, Greylock, Salesforce Ventures and Felicis, and 19 more on record.
2007201020132016201920222025
?Seed$250KSeed$4.2MSeed$8.3MSeries A
United States · Series A startup
Who invested in Ark
Funding summaryUpdated 26 Oct 2026
$18Mraised across 5 rounds since 2007, from 5 sources
$250KSeed$4.2MSeed$5.0MSeed$8.3MSeries A
- Latest round
- Series A, $8.3MSept 2026
- Step-upi
- 1.7×
- Investors
- 24
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Seed Jan 2007
- Biggest round
- $8.3M Series A · Sept 2026
- Usual gap between rounds
- 4.8 years the median of 3
The rounds
- Sept 2026Series A$8.3M4 new
Source recorded
- Apr 2012
- Apr 2012Seed$4.2M5 new
From a historical funding record
- Nov 2011Seed$250K5 new
- Ron Conway
Yuri Milner- Brian Coote
- Michael Schmidt
- Stuart Hunter
From a historical funding record
- Jan 2007SeedAmount undisclosed
No investor was named in the report.
From a historical funding record
Founders and team
From Ark's own website: 1 founder.
Ariel KatzFounder & CEO, H1
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.
Seed2007Seed2011Seed2012Seed2012Series A2026
Y Combinator
Andreessen Horowitz
Greylock
Salesforce Ventures
Felicis
SV Angel
Intel Capital
CRV
Tengxun Touzi
Atlas Venture
Y CombinatorAndreessen HorowitzGreylockSalesforce VenturesFelicisSV AngelIntel CapitalCRVTengxun TouziAtlas VentureEveryone who backed them
Ron ConwayAngel1round
Ryan AllisAngel1round
Brian Cooteno record of our own yet1round
Michael Schmidtno record of our own yet1round
Stuart Hunterno record of our own yet1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Ark
How much has Ark raised?
Ark has raised $18M across 5 rounds since 2007. One round did not disclose an amount, so the total is a floor.
When did Ark last raise?
Ark's most recent round was a Series A of $8.3M in Sept 2026.
What was Ark's biggest round?
Its most recent round, $8.3M in Sept 2026, is also its largest on record.
Who backed Ark first?
Ark's first round on record, in Nov 2011, was backed by Ron Conway, Yuri Milner and Brian Coote and 2 others.
What stage is Ark at?
Ark's latest named round is a Series A, in Sept 2026.
Where is Ark based?
Ark is based in the United States.
Companies like Ark
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.