Ambiq Micro, Inc.
Other Technology · Austin, Texas
Ambiq Micro, Inc. is a other technology company based in Austin, Texas. It has raised at least $405.7 million across 32 known rounds, of which $370.1 million was reported to the SEC on 32 Form D filings, most recently in 2024.
| Date | Round | Amount | Raised to date | Lead investor | Source |
|---|---|---|---|---|---|
| 2024-09-27 | — | $300K | $405.7M | SEC Form D | |
| 2024-07-29 | — | $2.4M | $405.4M | SEC Form D | |
| 2024-06-17 | — | $3.0M | $403.0M | SEC Form D | |
| 2024-05-28 | — | $5.6M | $400.0M | SEC Form D | |
| 2023-09-15 | —+1 amd | $83.2M | $394.4M | SEC Form D | |
| 2022-11-04 | — | $111K | $311.2M | SEC Form D | |
| 2022-02-23 | — | $44.8M | $311.1M | SEC Form D | |
| 2021-03-19 | — | $4.2M | $266.3M | SEC Form D | |
| 2020-11-02 | —+1 amd | $127.3M | $262.1M | SEC Form D | |
| 2020-04-03 | — | $5.1M | $134.8M | SEC Form D | |
| 2019-06-07 | —+1 amd | $12.7M | $129.7M | SEC Form D | |
| 2019-03-15 | — | $4.1M | $117.0M | SEC Form D | |
| 2019-01-31 | — | $1.0M | $112.9M | SEC Form D | |
| 2018-11-20 | — | $50K | $111.9M | SEC Form D | |
| 2018-06-13 | —+1 amd | $29.1M | $111.8M | SEC Form D | |
| 2017-09-15 | — | $5 | $82.8M | SEC Form D | |
| 2017-07-13 | — | $0 | $82.8M | SEC Form D | |
| 2017-06-16 | —+4 amd | $34.1M | $82.8M | SEC Form D | |
| 2016-12-22 | — | $2.5M | $48.7M | SEC Form D | |
| 2016-12-13 | — | $80K | $46.3M | SEC Form D | |
| 2016-08-10 | — | $9.5M | $46.2M | SEC Form D | |
| 2016-08-10 | — | $672K | $36.7M | SEC Form D | |
| 2016-08-10 | — | $246K | $36.0M | SEC Form D | |
| 2015-05-29 | — | $90K | $35.8M | SEC Form D | |
| 2014-11-07 | — | $15.6M | $35.7M | SEC Form D | |
| 2013-08-21 | — | $10.0M | $20.1M | SEC Form D | |
| 2013-07-01 | — | $3.2M | $10.1M | SEC Form D | |
| 2012-11-02 | — | $3.7M | $6.8M | SEC Form D | |
| 2012-07-25 | — | $1.1M | $3.2M | SEC Form D | |
| 2012-02-28 | — | $694K | $2.1M | SEC Form D | |
| 2010-12-29 | — | $15K | $1.4M | SEC Form D | |
| 2010-11-01 | — | $149K | $1.4M | SEC Form D | |
| 2010-11-01 | — | $1.2M | $1.2M | SEC Form D | |
| 2010-09-14 | — | $6K | $56K | SEC Form D | |
| 2010-09-03 | — | $50K | $50K | 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.