# Y Combinator's Chemicals & Materials Investments: 14 Startups in Its Portfolio (2026) > The 14 Chemicals & Materials startups Y Combinator has backed, by stage: $289M raised between them. From the rounds we track; updated nightly. Source: https://millionrounds.com/portfolio-maps/y-combinator-chemicals-materials-portfolio (Millionrounds; every figure on the page links to its filing or article) ## Stage not reported 5 - [Thread](https://millionrounds.com/company/thread) - [BioBTX](https://millionrounds.com/company/biobtx) - [GreenMantra Technologies](https://millionrounds.com/company/greenmantra-technologies) - [Cycle Momentum](https://millionrounds.com/company/cycle-momentum) - [Folia Materials](https://millionrounds.com/company/folia-materials) ## Pre-seed and seed 5 - [*LG* Lattice Grand Advanced Material Technology](https://millionrounds.com/company/lattice-grand-advanced-material-technology) - [spotLESS Materials](https://millionrounds.com/company/spotless-materials) - [Rise Reforming](https://millionrounds.com/company/rise-reforming) - [Rimba](https://millionrounds.com/company/rimba) - [Pakible](https://millionrounds.com/company/pakible) ## Series B 4 - [Encina](https://millionrounds.com/company/encina) - [Clariter](https://millionrounds.com/company/clariter) - [UpSolv](https://millionrounds.com/company/upsolv) - [FAIRMAT](https://millionrounds.com/company/fairmat) ## Segment by segment ### Stage not reported 5 startups · $156M raised - [**Thread**](https://millionrounds.com/company/thread) Thread is a clothes discovery service and personalised shop that makes it easy for people to dress well. United Kingdom $81M - [**BioBTX**](https://millionrounds.com/company/biobtx) BioBTX replaces oil for biomass & waste as a resource for the production of aromatics Netherlands $46M - [**GreenMantra Technologies**](https://millionrounds.com/company/greenmantra-technologies) GreenMantra Technologies develops a proprietary catalytic process to economically produce commercial quality waxes. Canada $27M - [**Cycle Momentum**](https://millionrounds.com/company/cycle-momentum) Cycle Momentum offers acceleration and open innovation programs dedicated to the clean technology ecosystem. Canada $800K - [**Folia Materials**](https://millionrounds.com/company/folia-materials) Folia Materials: using paper as a super material United States $800K ### Pre-seed and seed 5 startups · $9.8M raised - [*LG* **Lattice Grand Advanced Material Technology**](https://millionrounds.com/company/lattice-grand-advanced-material-technology) Lattice Grand Advanced Material Technology is a manufacturer of high thermal conductivity, thin film circuit ceramic substrates. United States $7.8M - [**spotLESS Materials**](https://millionrounds.com/company/spotless-materials) spotLESS Materials is a materials coatings company founded in May 2018 and based in State College, Pennsylvania. United States $900K - [**Rise Reforming**](https://millionrounds.com/company/rise-reforming) Rise Reforming is a cleantech startup based in Chicago, founded in 2024. United States $500K - [**Rimba**](https://millionrounds.com/company/rimba) Rimba is an AI-powered compliance operating system designed for the industrial sector, founded in 2024 and based in San Francisco. United States $500K - [**Pakible**](https://millionrounds.com/company/pakible) PAKIBLE is a San Francisco-based startup founded in 2014 that focuses on custom product packaging. United States $120K ### Series B 4 startups · $124M raised - [**Encina**](https://millionrounds.com/company/encina) ENCINA, formally known as Encina Development Group, LLC, is a circular economy company founded in 2016 and based in The Woodlands, Texas. United States $60M - [**Clariter**](https://millionrounds.com/company/clariter) Clariter is a global cleantech company based in Luxembourg, founded in 2003. Luxembourg $37M - [**UpSolv**](https://millionrounds.com/company/upsolv) UpSolv is a Montreal-based cleantech company specializing in recycling hard-to-recycle thermoplastics, particularly polystyrene (PS) and ABS. Canada $16M - [**FAIRMAT**](https://millionrounds.com/company/fairmat) FAIRMAT is a French deep-tech startup founded in 2020 and based in Paris. France $12M **How this map is made.** Every startup here works in Chemicals & Materials and has raised money in a round we track that names Y Combinator as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026. ## More portfolio maps [All portfolios](https://millionrounds.com/portfolio-maps) [Sector portfolio **Y Combinator's AI portfolio** 1,143 startups · $44B](https://millionrounds.com/portfolio-maps/y-combinator-ai-portfolio)[Sector portfolio **Y Combinator's Fintech portfolio** 338 startups · $24B](https://millionrounds.com/portfolio-maps/y-combinator-fintech-portfolio)[Sector portfolio **Y Combinator's Big Data & Analytics portfolio** 201 startups · $3.4B](https://millionrounds.com/portfolio-maps/y-combinator-big-data-analytics-portfolio)[Sector portfolio **Y Combinator's Healthtech portfolio** 150 startups · $4.2B](https://millionrounds.com/portfolio-maps/y-combinator-healthtech-portfolio)[Sector portfolio **Y Combinator's IT Services portfolio** 148 startups · $840M](https://millionrounds.com/portfolio-maps/y-combinator-it-services-portfolio)[Sector portfolio **Y Combinator's Web3 & Crypto portfolio** 139 startups · $7.4B](https://millionrounds.com/portfolio-maps/y-combinator-web3-crypto-portfolio) ## Raising from investors like Y Combinator? 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