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Chasm Advanced Materials, Inc.

Makes carbon-based materials for manufacturers of electronics, batteries and concrete.

Updated Nov 10, 2026·Latest SEC filing Jul 28, 2026·Suggest an edit

About CHASM

CHASM is a private company based in Canton, Massachusetts. It has reported $48,399,294 raised in six offerings on Form D since October 2016. Its chief executive is David Arthur.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
Sep 12, 2024Feb 11, 2025$5,000,000fully sold1$5.0MEquityRule 506(b)Form D ↗
Mar 31, 2023Apr 11, 2023amended Jul 28, 2026$14,845,000of $20.0M target11$1.3MDebtRule 506(b)Form D/A ↗3 earlier filings
Jul 29, 2021Aug 3, 2021amended Oct 10, 2024$15,267,168fully sold7$2.1MEquityRule 506(b)Form D/A ↗1 earlier filing
Aug 2, 2019Aug 12, 2019amended Oct 10, 2024$7,024,987of $10.0M target3$2.3MEquityRule 506(b)Form D/A ↗1 earlier filing
Apr 27, 2018Jun 5, 2018$5,837,139of $10.3M target9$648KEquityRule 506(b)Form D ↗
Sep 27, 2016Oct 14, 2016$425,000of $3.0M target8$53,125Equity, DebtRule 506(b)Form D ↗
Total, six offerings$48,399,294

First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.

Leadership Team

Executive officers and directors listed on CHASM's Form D filed Feb 11, 2025.

PS
Praveen Sahay
Director
Also a director at Novolyze and WindESCo.
Mark Robinson
Mark Robinson
Director
Also a director at American Aerogel.
David Arthur
David Arthur
CEO and Co-founder, director

Earlier filings also listed Patrick Suel (director, last listed Feb 2025), Robert Praino (secretary, treasurer and director, last listed Oct 2024) and Raymond Chang (director, last listed Oct 2024).

Sources

  1. SECChasm Advanced Materials, Inc. Form D/A, filed Sep 5, 2024
  2. SECChasm Advanced Materials, Inc. Form D/A, filed Sep 19, 2023
  3. SECChasm Advanced Materials, Inc. Form D, filed Apr 11, 2023
  4. SECChasm Advanced Materials, Inc. Form D, filed Aug 3, 2021
  5. SECChasm Advanced Materials, Inc. Form D, filed Aug 12, 2019
  6. SECChasm Advanced Materials, Inc. filing history
  7. CompanyContact CHASM
  8. CompanyCHASM Advanced Materials
  9. CompanyPrivacy Policy
  10. CompanyCHASM Leadership Team
  11. CompanyCHASM and Ingevity partnership