United States · Venture startup
Funding summaryUpdated 26 Oct 2026
$15Mraised across 3 rounds since 2019, from 3 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
National Science Foundation
Collaborative Fund
Breakthrough Energy
Good Growth Capital
Clean Energy VenturesSource recordedSEC filing: $28M sold, first sale Sept 2024
National Science FoundationCollaborative FundBreakthrough EnergyGood Growth CapitalClean Energy VenturesSource recordedSEC filing: $8.5M sold, first sale Sept 2024
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
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Boston Materials's investors include National Science Foundation, Collaborative Fund, Breakthrough Energy, Good Growth Capital and Clean Energy Ventures, and 2 more on record.
Boston Materials has raised $15M across 3 rounds since 2019. One round did not disclose an amount, so the total is a floor.
Boston Materials's most recent round was a Venture in Dec 2025.
Boston Materials's largest round on record is $14M (Series A), in Nov 2024.
Boston Materials's first round on record, in Mar 2019, was backed by Clean Energy Venture and SABIC.
Boston Materials's latest named round is a Venture, in Dec 2025.
Boston Materials is based in the United States.
Clean Energy Venture led the Seed in 2019.
In the same sector, and raised in the last eighteen months.
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