Prelude Ventures

Prelude Ventures is a San Francisco-based venture capital firm established in 2013, dedicated to investing in early-stage startups that aim to address climate change. The firm focuses on sectors such as advanced energy, food and agriculture, transportation, logistics, advanced materials, manufacturing, and advanced computing. By supporting innovative businesses in these areas, Prelude Ventures seeks to foster the development of the next generation of companies that can significantly impact environmental sustainability and contribute to a more sustainable future.

Katie Clasen

Principal

Alexandra Harbour

Principal

Bryan Shill

Principal

Nathaniel Simons

Co-Founder

Past deals in 3D Printing

Augmenta

Seed Round in 2025
Augmenta is motivated by the belief that generative methods enable a revolution in the way people function and approach. They provide the construction industry with the ability to design buildings more efficiently and at a lower cost, enabling a future of sustainable buildings, cities, and infrastructure. Their designs are NEC and customer specification compliant, use real parts, are fully constructible and optimized for prefabrication.

Fortify

Venture Round in 2023
Fortify is an advanced manufacturing startup focused on transforming additive manufacturing by producing custom, high-performance products. The company has developed a patented technology that integrates 3D printing with magnetics to create aligned reinforced carbon fiber composites. Using a combination of digital light processing and magnetic techniques, Fortify enables engineers to design and manufacture items with optimized material properties tailored for specific applications. Its product offerings range from injection mold tooling to high-performance components suitable for demanding environments. Fortify's innovative approach allows digital component manufacturers to access durable and high-performance composites more efficiently and at reduced costs.

Holo

Series B in 2021
Holo, Inc. is a technology company specializing in the design and manufacture of 3D printed parts using advanced additive manufacturing techniques. Founded in 2017 and headquartered in Oakland, California, Holo utilizes a unique polymer binder platform that is compatible with various materials, including copper, ceramics, and composites. Their patented 3D photolithographic process allows for the simultaneous exposure of eight million voxels, enabling the production of complex geometries that are subsequently chemically processed and sintered to create finished parts. Holo's technology is tailored for high-quality digital manufacturing at scale, addressing the needs of performance-driven applications across diverse industries.

Fortify

Series B in 2021
Fortify is an advanced manufacturing startup focused on transforming additive manufacturing by producing custom, high-performance products. The company has developed a patented technology that integrates 3D printing with magnetics to create aligned reinforced carbon fiber composites. Using a combination of digital light processing and magnetic techniques, Fortify enables engineers to design and manufacture items with optimized material properties tailored for specific applications. Its product offerings range from injection mold tooling to high-performance components suitable for demanding environments. Fortify's innovative approach allows digital component manufacturers to access durable and high-performance composites more efficiently and at reduced costs.

Fortify

Series A in 2019
Fortify is an advanced manufacturing startup focused on transforming additive manufacturing by producing custom, high-performance products. The company has developed a patented technology that integrates 3D printing with magnetics to create aligned reinforced carbon fiber composites. Using a combination of digital light processing and magnetic techniques, Fortify enables engineers to design and manufacture items with optimized material properties tailored for specific applications. Its product offerings range from injection mold tooling to high-performance components suitable for demanding environments. Fortify's innovative approach allows digital component manufacturers to access durable and high-performance composites more efficiently and at reduced costs.

unspun

Seed Round in 2019
Unspun, Inc. is a digital apparel company based in San Francisco, California, founded in 2015. It specializes in creating custom jeans tailored to individual consumers using advanced body scanning technology, fit algorithms, and additive manufacturing. The company aims to address environmental challenges by minimizing pattern-cutting waste and unsold inventory, thus contributing to a reduction in global carbon emissions. Unspun's innovative approach enables on-demand production of jeans in under ten minutes, utilizing localized manufacturing processes designed to be zero-waste. Its technology has gained recognition, including being named one of TIME's Best Inventions of 2019, and supports a B2B platform that facilitates digital customization for major apparel brands.

Fortify

Seed Round in 2019
Fortify is an advanced manufacturing startup focused on transforming additive manufacturing by producing custom, high-performance products. The company has developed a patented technology that integrates 3D printing with magnetics to create aligned reinforced carbon fiber composites. Using a combination of digital light processing and magnetic techniques, Fortify enables engineers to design and manufacture items with optimized material properties tailored for specific applications. Its product offerings range from injection mold tooling to high-performance components suitable for demanding environments. Fortify's innovative approach allows digital component manufacturers to access durable and high-performance composites more efficiently and at reduced costs.

Holo

Seed Round in 2019
Holo, Inc. is a technology company specializing in the design and manufacture of 3D printed parts using advanced additive manufacturing techniques. Founded in 2017 and headquartered in Oakland, California, Holo utilizes a unique polymer binder platform that is compatible with various materials, including copper, ceramics, and composites. Their patented 3D photolithographic process allows for the simultaneous exposure of eight million voxels, enabling the production of complex geometries that are subsequently chemically processed and sintered to create finished parts. Holo's technology is tailored for high-quality digital manufacturing at scale, addressing the needs of performance-driven applications across diverse industries.

polySpectra

Venture Round in 2017
PolySpectra, Inc. is a Berkeley, California-based company founded in 2016 that specializes in the development of computer-guided 3-D printing resins. The company focuses on transforming 3D printing from a prototyping tool into a viable production manufacturing solution. PolySpectra manufactures functional materials for advanced additive manufacturing, utilizing light-activated catalysts to create durable plastic parts suitable for consumer use. Its modular platform allows for the delivery of materials with a wide range of tailored properties derived from a single chemical system. This innovative approach supports inventors, designers, and engineers in bringing their concepts to life.
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