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Coreshell Technologies, Inc.

Coreshell makes silicon-based batteries for automakers, battery manufacturers, and defense customers.

Updated Nov 10, 2026·Latest SEC filing Apr 6, 2026·Suggest an edit

About Coreshell

Coreshell is a private company based in San Leandro, California. It has reported $58,893,638 raised in three offerings on Form D since April 2020. Its chief executive is Jonathan Tan.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
Mar 20, 2026Apr 6, 2026$46,302,668of $74.5M target22$2.1MEquityRule 506(b)Form D ↗
Dec 17, 2021Dec 27, 2021$10,876,971of $12.0M target7$1.5MEquityRule 506(b)Form D ↗
Apr 10, 2020Apr 24, 2020$1,713,999of $3.8M target17$100KEquity, OptionsRule 506(b)Form D ↗
Total, three offerings$58,893,638

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 Coreshell's Form D filed Apr 6, 2026.

John Nadaskay
John Nadaskay
Chief Financial Officer
BO
Benoist Ollivier
Ferroglobe, Coreshell Board Director
Jonathan Tan
Jonathan Tan
Chief Executive Officer, Co-founder and director
JB
Judith O'Brien
Independent Director, Coreshell Board Director
HW
Hinrich Woebcken
Trousdale Ventures, Coreshell Board Director
SB
Sourav Basu
Executive officer and director
AF
Alexander Fang
Director
Also an executive officer and director at OpenLight Photonics and a director at Quintessent.
YK
Youngduk Kim
Chief Manufacturing Officer
NP
Nami Park
Access Industries, Coreshell Board Director

Earlier filings also listed Phillip Sarofim (director, last listed Dec 2021).

Sources

  1. SECCoreshell Technologies, Inc. filing history
  2. CompanyCoreshell privacy policy
  3. CompanyCoreshell about
  4. PressCoreshell defense market announcement