AtoB
YC S20San Francisco, US · Founded 2019 · 75 employees · Hiring · 25 known investors
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AtoB provides fleet fuel cards that consolidate fuel, vehicle maintenance, repairs, tolls, and operational expenses for businesses operating private fleets, OTR carriers, or single-vehicle operations. The platform offers real-time expense tracking and controls to replace multiple statements and reimbursement cycles.
Also known as CElegans Labs, Inc.
Founders & leadership· Y Combinator alumni (S20)
AtoB was founded in 2019 by Vignan Velivela and Harshita Arora.



Investors · 25
How we know: funding news · pulse2.com · the VCSheet dataset · github.com · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us
How we know: the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Y Combinator's founder network · collabfund.com · Not right? Tell us
How we know: Contrary's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us
How we know: Designer Fund's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us
How we know: General Catalyst's portfolio page · funding news · pulse2.com · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us
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How we know: Long Journey Ventures's portfolio page · the VCSheet dataset · Y Combinator's founder network · Not right? Tell us
How we know: On Deck's portfolio page · Y Combinator's founder network · Not right? Tell us
How we know: Valkyrie Ventures Management, Llc's portfolio page · Not right? Tell us
How we know: XYZ Venture Capital's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us
How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: the VCSheet dataset · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
Also in the syndicate · 1
Funding
SEC filings, press & company announcements$130M disclosed across 1 of 2 rounds · 2024
- Undisclosed amountSeries CSep 2024 · 2 sources
Bloomberg Beta (lead), General Catalyst (lead), Mastercard
Source ↗ - $130MraisedSep 2024 · 2 sourcesSource ↗
Source: company announcements and press reports — follow each round's link for the claim.
Founder mafia
5 people who came through AtoB went on to found or lead other companies.
Related companies · 10
Companies working in the same space as AtoB.
Legal entities · 1
corporate structureIn the news
Frequently asked questions
- What does AtoB do?
- AtoB provides fleet fuel cards that consolidate fuel, vehicle maintenance, repairs, tolls, and operational expenses for businesses operating private fleets, OTR carriers, or single-vehicle operations. The platform offers real-time expense tracking and controls to replace multiple statements and reimbursement cycles.
- Who founded AtoB?
- AtoB was founded by Vignan Velivela, Harshita Arora in 2019.
- Who are AtoB's investors?
- AtoB's investors include Bloomberg Beta, Cleo Capital, Collaborative Fund, Contrary, Designer Fund, General Catalyst, Jetstream, Leadout Capital and 16 more.
- How much funding has AtoB raised?
- AtoB has disclosed $130M raised across 1 of its 2 known rounds.
- Where is AtoB headquartered?
- AtoB is headquartered in San Francisco, US.



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