United States · Series A startup
Funding summaryUpdated 26 Oct 2026
$55Mraised across 5 rounds since 2025, from 6 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Madrona Venture GroupLead
Klass CapitalLead
Alumni Ventures
Sandberg Bernthal Venture Partners
DVx VenturesReported by Tech Funding News
Source recordedSEC filing: $600K sold, first sale Apr 2025
Y Combinator
Khosla Ventures
Battery Ventures
Peak XV
QED Investors
Samsung Next
Blume Ventures
Anthemis
Matrix Partners India
PeakSource recorded and 1 otherSEC filing: $600K sold, first sale Apr 2025
Source recordedSEC filing: $600K sold, first sale Apr 2025
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Y CombinatorQED InvestorsSamsung NextAnthemisMadrona Venture GroupLKlass CapitalLAlumni VenturesKhosla Ventures
GreylockBattery VenturesMissing a round, or an investor who was in one? Tell us.
Atomic's investors include Y Combinator, QED Investors, Samsung Next, Anthemis and Madrona Venture Group, and 14 more on record. Madrona Venture Group led its latest round.
Atomic has raised $55M across 5 rounds since 2025. One round did not disclose an amount, so the total is a floor.
Atomic's most recent round was a Series A of $13M in Sept 2026, led by Madrona Venture Group.
Atomic's largest round on record is $30M (Venture), in Aug 2025.
Atomic's first round on record, in Apr 2025, was backed by K1W1.
Atomic's latest named round is a Series A, in Sept 2026.
Atomic is based in the United States.
Madrona Venture Group led the Series A in 2026.
In the same sector, and raised in the last eighteen months.
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