United States · 
Who invested in AtomBeam?
AtomBeam's investors include MassChallenge.
20252026
$20MVenture$4.6MCrowdfunding$18MRoundUnited States · Funded startup
Who invested in AtomBeam
3 rounds we have observed, with the one investor 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 this month
Funding summaryUpdated 26 Oct 2026
$43Mraised across 3 rounds since 2025, from 6 sources
$20MVenture$4.6MCrowdfunding$18MRound
- Latest round
- Round, $18MOct 2026
- Biggest round
- $20MVenture · Feb 2025
- Step-upi
- 4×
- Investors
- 1
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, $20M Feb 2025
- Biggest round
- $20M Venture · Feb 2025
- Usual gap between rounds
- 12 months the median of 2
The rounds
- Oct 2026
- Nov 2025
- Feb 2025
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
This firm lists AtomBeam as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about AtomBeam
How much has AtomBeam raised?
AtomBeam has raised $43M across 3 rounds since 2025.
When did AtomBeam last raise?
AtomBeam's most recent round was an Undisclosed round of $18M in Oct 2026.
What was AtomBeam's biggest round?
AtomBeam's largest round on record is $20M (Venture), in Feb 2025.
Who backed AtomBeam first?
AtomBeam's first round on record, in Feb 2025, was backed by MassChallenge.
What stage is AtomBeam at?
AtomBeam's latest named round is an Undisclosed round, in Oct 2026.
Where is AtomBeam based?
AtomBeam 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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