# Channing Street Copper Co — Form D

Channing Street Copper Co of BERKELEY, CA, a company, filed a Form D exempt-offering notice with the SEC on 2026-07-30. The offering totals $9.8M, of which $9.8M was reported sold. Industry: Other Technology.

## Offering

- Filed: 2026-07-30
- Form: D
- Accession: 0001993644-26-000003
- Industry: Other Technology
- Exemptions: 06b
- Total offering: $9.8M
- Amount sold: $9.8M
- Investors: 8
- Revenue range: Decline to Disclose
- SEC file number: 021-592546

## Issuer

- Name: Channing Street Copper Co
- CIK: 0001993644
- Entity type: Other
- Jurisdiction: DELAWARE
- Incorporated: 2022
- Address: 2827 SEVENTH STREET, BERKELEY, CA, 94710
- Phone: 707-646-9219

## Officers, directors & promoters (14)

| Name | Role | Location |
| --- | --- | --- |
| Mark Cupta | Director | Cambridge, MA |
| Mark Cupta | Related Person | Cambridge, MA |
| Sam Calisch | Director | Berkeley, CA |
| Sam Calisch | Executive Officer | Berkeley, CA |
| Sam Calisch | Related Person | Berkeley, CA |
| Sarah Sclarsic | Director | Berkeley, CA |
| Sarah Sclarsic | Related Person | Berkeley, CA |
| Eric Wilhelm | Director | Berkeley, CA |
| Eric Wilhelm | Executive Officer | Berkeley, CA |
| Eric Wilhelm | Related Person | Berkeley, CA |
| Tucker Gilman | Director | Berkeley, CA |
| Tucker Gilman | Executive Officer | Berkeley, CA |
| Tucker Gilman | Related Person | Berkeley, CA |
| Samuel Calisch | Executive Officer | Berkeley, CA |

## Other filings by this issuer (4)

| Filed | Form | Offering | Sold |
| --- | --- | --- | --- |
| [2026-07-30](https://search.stillhousedata.com/formd/0001993644-26-000004) | D/A | $9.8M | $9.8M |
| [2025-08-29](https://search.stillhousedata.com/formd/0001993644-25-000002) | D | $20.0M | $20.0M |
| [2024-07-16](https://search.stillhousedata.com/formd/0001993644-24-000001) | D | $4.5M | $4.2M |
| [2023-09-15](https://search.stillhousedata.com/formd/0001993644-23-000001) | D | $7.2M | $6.9M |

## More

- [CIK 1993644 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1993644&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/formd/0001993644-26-000003.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.