What Neustark does

Neustark is a Swiss concrete producer and carbon dioxide removal (CDR) technology company headquartered in Berne, Switzerland, founded in 2017. The company operates a proprietary process that captures CO2 from wastewater treatment plant exhaust streams and mineralizes it into minerals that are then bound into recycled concrete aggregate, turning a permanent carbon removal outcome into a usable construction material. Its primary customer segment is the construction and cement industry, where the technology addresses one of the hardest-to-abate industrial emissions sources — cement and concrete production — by supplying a decarbonized aggregate input. Co-founders Valentin Gutknecht (co-CEO), Johannes Tiefenthaler (Process Engineering Advisor and Board Member), and Mischa Repmann (Carbon Removal and Carbon Markets Advisor) lead the company.

The business model combines materials supply with verified carbon removal revenue: Neustark produces and supplies CO2-mineralized recycled aggregate to concrete and cement producers while generating independently verifiable permanent carbon removal that can be sold into voluntary carbon markets. The company is at an industrial scale-up stage with 51–100 employees and has been selected as one of 10 scale-ups in the inaugural Project Switzerland cohort run by the Deep Tech Nation Switzerland Foundation, a 12-month program designed to support international expansion.

Neustark's capital base reflects strong strategic and financial validation. The company closed a $69 million growth round in June 2024 led by Decarbonization Partners with participation from Holcim (a global cement major), Siemens Financial Services, ACE Ventures, Blume Equity, and Verve Ventures, alongside additional capital from UBS. Earlier non-dilutive and development funding came from Innosuisse (2023), the Technology Fund (2022), and MassChallenge (2020). The Holcim investment is particularly material: it signals both a strategic alignment with a top-tier incumbent cement company and a potential anchor customer and distribution channel for international scaling. Pricing models, GTM motion, and specific revenue mechanics are not publicly disclosed in the available sources.

Name

Neustark

Website

https://neustark.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

51–100 employees

Short description

Neustark is a Swiss concrete producer that permanently mineralizes CO2 from wastewater treatment plant exhaust into recycled concrete aggregates, supplying decarbonized aggregate and verified carbon removal to the cement and construction industry.

Ownership category

akta.pro rank

Product category

Sustainable Construction Materials

NAICS

Chemical Manufacturing (325), Sewage Treatment Facilities (22132)

SIC

Industrial Inorganic Chemicals (2810), Concrete Products, Except Block & Brick (3272)

akta.pro primary industry

Biomass Carbon Removal & Storage (BECCS/Bioenergy with CO₂ Capture) (EUABAFAB)

akta.pro secondary industry

Adsorption & Taste/Odor Control (GAC/PAC, Air Stripping) (EUANABAF)

Keywords

• Carbon capture concrete
• Cement decarbonization
• Mineral carbonation
• Carbon removal technology
• Sustainable concrete

Headquarters

HQ city

Berne

HQ country

Switzerland

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Operations, Supply Chain, Personnel

Core offering

Neustark captures CO2 from the atmosphere and mineralizes it at wastewater treatment plants, producing carbonated mineral aggregates that are incorporated into concrete. The process permanently sequesters CO2 in concrete and supplies the construction industry with carbon-negative construction materials while offering wastewater operators a carbon capture application.

Differentiator

Problem solved

Functional benefit

Products and services

• Carbon-negative concrete (CO2-mineralized concrete) Concrete produced using mineralized CO2 aggregates captured and carbonated at wastewater treatment plants, supplying the construction and cement industry with a carbon-negative construction material that permanently stores CO2.

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Deep Tech Nation Switzerland FoundationflagshipStrategic or Co-development PartnerNeustark was selected as one of 10 scale-ups for the first batch of Project Switzerland, an initiative by the Deep Tech Nation Switzerland Foundation. The 12-month program pairs founders with seasoned Swiss entrepreneurs to help them navigate global expansion and build businesses with international leverage. The program specifically aims to bridge Switzerland's scaling expertise gap.

Scale indicators4 records

Recent moves2 records

Expansion highlights5 records

Market position

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds5 records

Investors10 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Neustark