Sublime Systems: Funding, Investors & Team (Oct 2026)
Sublime Systems is at the forefront of a rapid and extensive shift towards environmentally friendly cement production. The company's innovative electrochemical process eliminates the pollution associated with traditional portland cement manufacturing methods, which rely on fossil fuels and limestone. Sublime's technology extracts calcium and silicates from readily available raw materials at room temperature to produce Sublime Cement™, a sustainable alternative to ordinary Portland cement in concrete. By avoiding the need for carbon capture, Sublime's approach offers a cost-effective way to scale up clean cement production. Established in 2020 at MIT by Dr. Leah Ellis and Prof. Yet-Ming Chiang, both experts in materials science, electrochemical systems, and sustainability, Sublime has secured significant funding from prominent technology investors, major players in the cement industry, and government programs such as the U.S. Department of Energy's ARPA-E, IEDO, and OCED awards. The company currently runs a pilot plant in Somerville, MA, capable of producing over 250 tons per year, and is in the process of establishing its first commercial facility in Holyoke, MA, with a capaUK 30,000 tons per year.
Sublime Systems has raised $115M across 3 funding rounds on record, the most recent an undisclosed round announced in May 2025.
Sublime Systems Company Profile and Key Stats
Latest funding round on record: May 2025.
Sublime Systems Funding Rounds
1 of 3 rounds was announced without a disclosed amount and is excluded from the total.
Sublime Systems raised $40.0M in a Series A announced in Jan 2023.
1.7 years later, an undisclosed round of $75.0M was announced in Sep 2024.
8 months later, an undisclosed round was announced in May 2025 with no disclosed amount.
Sublime Systems Founders and Leadership Team
Contact details for the Sublime Systems team: 2 of 2 have an email address on file.
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Sublime Systems Funding FAQs
What does Sublime Systems do?
Sublime Systems is at the forefront of a rapid and extensive shift towards environmentally friendly cement production. The company's innovative electrochemical process eliminates the pollution associated with traditional portland cement manufacturing methods, which rely on fossil fuels and limestone. Sublime's technology extracts calcium and silicates from readily available raw materials at room temperature to produce Sublime Cement™, a sustainable alternative to ordinary Portland cement in concrete. By avoiding the need for carbon capture, Sublime's approach offers a cost-effective way to scale up clean cement production. Established in 2020 at MIT by Dr. Leah Ellis and Prof. Yet-Ming Chiang, both experts in materials science, electrochemical systems, and sustainability, Sublime has secured significant funding from prominent technology investors, major players in the cement industry, and government programs such as the U.S. Department of Energy's ARPA-E, IEDO, and OCED awards. The company currently runs a pilot plant in Somerville, MA, capable of producing over 250 tons per year, and is in the process of establishing its first commercial facility in Holyoke, MA, with a capaUK 30,000 tons per year.
How much funding has Sublime Systems raised?
Sublime Systems has raised $115M across 3 rounds on record.
When did Sublime Systems last raise funding?
Sublime Systems' most recent funding round on record was announced in May 2025. The amount was not disclosed.
Who founded Sublime Systems?
FundedIQ lists Leah Ellis (Founder), Yet Ming Chiang (Founder) at Sublime Systems.
Where is Sublime Systems headquartered?
Sublime Systems is based in Somerville, Massachusetts, United States.
How many employees does Sublime Systems have?
Sublime Systems is in the 101-250 employee band.
About FundedIQ's Sublime Systems Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Sublime Systems is left off this page rather than filled in.
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