Heimdal
DefunctYC S21Denver, US · Founded 2020 · Delaware corporation · 12 employees · 8 known investors
Find your way into Heimdal
1,125 people in our graph share verified history with the Heimdal team — schools, employers, funds. One of them is your warm intro.
Mariaunlockedknows Erik Millar · together at University of Oxford (overlapped)
knows the team · via University of Oxford
×3knows the team · via University of Leeds
×4knows the team · via Y Combinator
×2knows the team · via University of Oslo
knows the team · via UWC South East Asia
Heimdal manufactures direct air capture equipment that removes CO2 from the atmosphere and stores it permanently, operating facilities in the United States including the nation's largest low-cost capture plant.
Advanced ManufacturingClimate TechCarbon Capture and RemovalClimateUnited States of AmericaAmerica / CanadaPartly Remote
Founders & leadership· Y Combinator alumni (S21)
Heimdal was founded in 2020 by Marcus Lima and Erik Millar.
ML

Marcus Limain𝕏Founder & CEO2020–2025Marcus Lima is co-founder and CEO of Torus, which develops engineering tools for capital project firms. He previously founded Heimdal, a direct air carbon capture technology company, and holds degrees from Oxford and Cambridge.30 Under 30 2024
EM

Erik MillarinCo-FounderErik Millar studied mechanical engineering at the University of Oxford and holds a master's degree in energy systems. He has worked on projects including carbon farming in Australia, solar farm development, and assistive technology research.
Investors · 8
Brighter CapitalCupertino · $25K – $100Kvia Yun-Fang Juan · inferred
Broom VenturesSan Francisco
Cool Climate CollectiveSacramento · $100K – $350Kvia Mehrad Yaghmai · inferred
MetaplanetTallinn · $500K – $10M
VoLo Earth VenturesSnowmass Village · $2M
Y CombinatorSan Francisco · $500K
Cathexis VenturesreportedHouston · $250K – $1Mvia Mark Friday · inferred
Lombardstreet VenturesreportedWoodside · $500K
Reported raises · per SEC filings
Form D private placements$10.8M disclosed across 1 round · 2021
▶$10.8MraisedDec 2021 · 47 investors · Other TechnologyRule 506(b)
▶$10.8MraisedDec 2021 · 47 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Erik J. MillarExecutive Officer, Director
- Marcus LimaExecutive Officer, Director
- Offering amount
- $10.8M
- Amount sold
- $10.8M
- First sale
- Nov 2021
- Incorporated
- Corporation, Delaware, 2021
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
The YC application· Summer 2021 batch
Heimdal Y Combinator application video
Heimdal Limited
In the news
Frequently asked questions
- What does Heimdal do?
- Heimdal manufactures direct air capture equipment that removes CO2 from the atmosphere and stores it permanently, operating facilities in the United States including the nation's largest low-cost capture plant.
- Who founded Heimdal?
- Heimdal was founded by Marcus Lima, Erik Millar in 2020.
- Who are Heimdal's investors?
- Heimdal's investors include Brighter Capital, Broom Ventures, Cool Climate Collective, Metaplanet, VoLo Earth Ventures, Y Combinator, Cathexis Ventures, Lombardstreet Ventures.
- How much funding has Heimdal raised?
- Heimdal has disclosed $10.8M raised across 1 round.
- Where is Heimdal headquartered?
- Heimdal is headquartered in Denver, US.




