Metalmark creates nanostructured materials that destroy submicron scale airborne pollutants and toxins to support healthy indoor air quality. It aims to address the challenges associated with air pollution and climate change. The company's air cleaning technology utilizes catalytic materials to filter the air with nanoscale precision.

It was founded in 2017 and is headquartered in Boston, Massachusetts.

Cambridge, MA, USA

Boston, MA, USA

West Street / River Street, Boston, MA, USA

Metalmark Innovations

Public health

Safety and resilience

Seed

The first venture fund for startups that are making cities better.

Third Sphere Management Co

Third Sphere

Tell us about your professional DNA to get discovered by any company in our network with opportunities relevant to your career goals.

Leverage our network to build your career.

#### Hello,
In 5 quick steps, tell us about the type of opportunities you'd be interested in next. We'll use this information to connect you to relevant opportunities in the Urban Us network as they come up. You can always update this information later.

As our companies grow, they look to us to help them find the best talent.

Signal that you'd be interested in working with a Urban Us company to help us put the right opportunities at great companies on your radar. The choice to pursue a new career move is then up to you.

Success! Your profile is now visible to our team and companies in our network.
We’ll contact you when we find a great opportunity for you.

Welcome to the Third Sphere opportunity network

This is a simple way to hear about opportunities from across our portfolio.

Work with Third Sphere portfolio companies