Prieto Battery, Inc.
Other Technology · Fort Collins, Colorado
Prieto Battery, Inc. is a other technology company based in Fort Collins, Colorado. It has raised at least $31.8 million across 6 known rounds, of which $27.0 million was reported to the SEC on 6 Form D filings, most recently in 2025.
Prieto Battery was founded in 2009 based on breakthrough research by leading scientist Dr. Amy Prieto at Colorado State University.
| Date | Round | Amount | Raised to date | Lead investor | Source |
|---|---|---|---|---|---|
| 2025-01-08 | — | $13.1M | $31.8M | SEC Form D | |
| 2023-02-27 | — | $8.0M | $18.7M | SEC Form D | |
| 2021-08-16 | —+1 amd | $4.7M | $10.7M | SEC Form D | |
| 2015-12-08 | —+1 amd | $1.2M | $6.0M | SEC Form D | |
| 2012-05-25 | —+1 amd | $3.0M | $4.8M | SEC Form D | |
| 2011-06-27 | — | $415K | $1.8M | SEC Form D | |
| 2010-11-16 | — | $500K | $1.4M | SEC Form D | |
| 2009-10-01 | —+1 amd | $900K | $900K | 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.