New Materials Startups

Spiber develops next-generation biomaterials based on structural protein technology, producing polymers through fermentation for applications across lifestyle, beauty, food, and healthcare products. The Japanese company operates a production plant in Thailand and a materials sales branch in Europe.

1 investor

Spoontainable produces edible and sustainable single-use tableware such as spoons, straws, plates, cups, and bowls as alternatives to plastic and PLA products, marketed to food-service businesses like ice cream parlors and restaurants. It is a wholly owned subsidiary of Stroodles Limited.

1 investor

Spora discovers and preserves wild mushroom species and uses mycelium-growing technology to produce materials and design products, each shaped by the biological patterns of the organism it originates from. Its output is positioned as unique, nature-derived design pieces and materials.

1 investor

Spray-Tek provides contract spray drying and microencapsulation services for complex ingredients and formulations, helping customers scale and stabilize high-performance products. The company operates GMP facilities with spray dryers and holds patents in microencapsulation, including biodegradable technologies, and also offers turnkey supply chain and production support.

1 investor

Spuntech manufactures spunlace nonwoven fabrics used in household, medical, cosmetics and feminine care, baby, and industrial products. The company supplies manufacturers across these consumer and industrial product categories, with facilities in Israel and the United States.

1 investor

Standard Lithium Ltd. is a lithium development company. This page is an investor stock information and email-subscription page, offering limited detail about the company's operations.

1 investor

StandardX develops a compact particle accelerator platform to produce isotopes at scale, targeting applications in medicine, industry, and energy. The company positions its technology as a scalable isotope production platform supplying critical isotopes for industrial and other sectors.

1 investor

Standard Biocarbon produces engineered biochar from renewable sawmill residuals sourced in Maine, using pyrolysis technology at a facility alongside Pleasant River Lumber in Enfield. Its products serve soil improvement, agriculture, filtration, water treatment, remediation, livestock, turf, and industrial material applications for customers ranging from local growers to large-scale industry.

1 investor

STAR'S TECH develops products from discarded starfish (a marine waste), including an eco-friendly de-icing agent (ECO-ST1), a starfish-derived collagen cosmetic ingredient (PENELLAGEN), and a natural liquid fertilizer. The company focuses on upcycling marine waste into materials for road de-icing, cosmetics, and agriculture.

1 investor

Starstone develops a biogenic, low-carbon cement and concrete replacement using natural biomineralization and cementation processes as an alternative to traditional cement production. It targets producers and builders across the construction value chain seeking to reduce carbon emissions and dependency on quarries and kilns.

1 investor

Stealth Manufacturing designs, engineers, and fabricates custom industrial gas burners, inlet tubes, manifolds, orifices, and related components for industries such as commercial hearths, cooking equipment, HVAC, and OEMs. The US-based company offers full-service metal fabrication including laser cutting, welding, stamping, and assembly from prototype to production.

1 investor

Stedfast manufactures coated and laminated protective barrier fabrics, including chemical and biological resistant materials, for first responders, medical PPE, industrial, and military applications. Founded in 1930, it produces high-performance protective fabrics such as CBRN protection layers and air-permeable particulate barriers.

1 investor

Steelike develops and commercializes an ultra-high performance concrete (UHPC) mix design used in infrastructure and architectural applications such as bridge deck overlays, precast connections, and structural repairs. Its Steelike UHPC product meets Federal Highway Administration standards and is sold in the US construction market.

1 investor

SteelPro supplies structural and miscellaneous steel for commercial and industrial construction job sites, offering engineering, detailing, and project management services. It serves construction projects across the country.

1 investor

The Stellenbosch Nanofiber Company (SNC) develops and manufactures products based on electrospun nanofiber technology, using its patented high-throughput electrospinning platform to take customers' nanofiber concepts to commercial-scale, regulatory-compliant production. It serves customers across industries including filtration, biomedical and healthcare, energy, electronics, cosmetics, and textiles.

1 investor

StemBond makes SENCE, a range of cell culture well plates (6 to 96 wells), coverslips and inserts pre-coated with a proprietary animal-free hydrogel tuned to tissue-relevant stiffnesses. The synthetic, xeno-free surfaces are sold as reorderable consumables to researchers and biotechs to reduce variability and improve reproducibility in standard cell culture workflows.

1 investor

Kempf Company is a distributor of building and construction materials, offering products such as drywall, tile backer, cement board, insulation, steel framing, fasteners, and tools for construction professionals. It operates an online catalog and pro portal with local pickup and shipping options.

1 investor

Stoked Plastics develops recycled plastic material from collected ocean waste, particularly water bottles, for use in injection-molded products. The material is marketed as a sustainable alternative to virgin plastic for manufacturers seeking to meet ESG commitments and environmental responsibility goals.

1 investor

STRÄHLE+HESS designs and manufactures technical textiles for automotive interiors, such as headliners, pillars, and rear shelves, supplying carmakers. The nearly 100-year-old company operates five production sites across Germany, Slovakia, and the USA, with a focus on sustainable materials and design for the mobility sector.

1 investor

Subatomic is focused on restoring domestic uranium supply in the United States.

1 investor

Sudoc develops patented TAML catalyst chemistry that mimics the body's oxidation reactions to make cleaning and water-treatment processes more efficient while reducing chemical, heat, and water use. It applies this technology through product brands serving professional cleaning, industrial systems, commercial laundry, and wastewater treatment markets.

1 investor

Sulvaris develops patented process technologies (MST, CCT, SAGE) that convert low-value industrial by-products, waste biomass, and off-spec materials into high-efficiency, plant-available fertilizer products. It serves producers, retailers, and distributors in commercial broad-acre and specialty agriculture.

1 investor

Sumisho Interior International is an interior products company that sources and supplies interior materials such as carpets, LVT flooring, and furniture, drawing on global procurement and a network of manufacturers. It is part of the Sumitomo Corporation Group.

1 investor

Sumisho Metalex is a Japanese solutions provider trading in non-ferrous metals such as titanium and offering related products including forming/press machinery to industrial customers. The company serves industries such as aerospace and manufacturing and is engaged in materials distribution and recycling initiatives.

1 investor