Channing Street Copper Co
Other Technology · Berkeley, California
Channing Street Copper Co is a other technology company based in Berkeley, California, incorporated in 2022. It has raised at least $40.9 million across 3 known rounds, of which $31.0 million was reported to the SEC on 3 Form D filings, most recently in 2025.
| Date | Round | Amount | Raised to date | Lead investor | Source |
|---|---|---|---|---|---|
| 2026-07-30 | —+1 amd | $9.8M | $40.9M | SEC Form D | |
| 2025-08-29 | — | $20.0M | $31.0M | SEC Form D | |
| 2024-07-16 | — | $4.2M | $11.0M | SEC Form D | |
| 2023-09-15 | — | $6.9M | $6.9M | SEC Form D |
SEC rows are Form D filings, where the amount is what was actually sold and amendments update a round rather than adding one. Press rows are split between company-issued releases or wires and editorial or third-party coverage. The total is therefore a floor: a round nobody reported is a round we cannot see. A buyout or control change appears in the timeline but is never added to the total: that money goes to shareholders, not into the company.
Form D is the notice a company files with the SEC when it sells securities without registering them. It reports the amount sold, not a valuation. Figures here are what the filing says. Where a filing is silent, the field is left blank rather than estimated. “Total raised” adds press-reported rounds that never appear in a filing, so it is a floor rather than an audited sum: press amounts are the figures the company announced, and a round nobody reported is a round we cannot see.