Ambiq Micro, Inc. SEC filings AMBQ
Ambiq Micro, Inc. has 187 filings in SEC EDGAR's recent list, going back to Sep 3, 2010. Its latest annual report, Form ARS, was filed on Apr 22, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 11, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 11, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 27, 2026 | — |
| 4 | Insider transaction | Oct 16, 2026 | Oct 15, 2026 |
| 4 | Insider transaction | Oct 16, 2026 | Oct 15, 2026 |
| 4 | Insider transaction | Oct 16, 2026 | Oct 14, 2026 |
| 4 | Insider transaction | Oct 6, 2026 | Oct 2, 2026 |
| 4 | Insider transaction | Oct 6, 2026 | Oct 2, 2026 |
| 4 | Insider transaction | Oct 6, 2026 | Oct 2, 2026 |
| 4 | Insider transaction | Oct 6, 2026 | Oct 2, 2026 |
| 144 | Notice of proposed sale | Oct 5, 2026 | — |
| 144 | Notice of proposed sale | Oct 2, 2026 | — |
| 144 | Notice of proposed sale | Oct 2, 2026 | — |
| 144 | Notice of proposed sale | Oct 2, 2026 | — |
| 144 | Notice of proposed sale | Oct 2, 2026 | — |
| 4 | Insider transaction | Sep 17, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 11, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 11, 2026 |
| 144 | Notice of proposed sale | Sep 11, 2026 | — |
| 144 | Notice of proposed sale | Sep 11, 2026 | — |
| 4 | Insider transaction | Sep 9, 2026 | Sep 4, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 4, 2026 |
| 144 | Notice of proposed sale | Sep 4, 2026 | — |
| 144 | Notice of proposed sale | Sep 4, 2026 | — |
| 4 | Insider transaction | Sep 2, 2026 | Aug 31, 2026 |
| 144 | Notice of proposed sale | Sep 2, 2026 | — |
| 144 | Notice of proposed sale | Sep 1, 2026 | — |
| 144 | Notice of proposed sale | Aug 31, 2026 | — |
| 4 | Insider transaction | Aug 28, 2026 | Aug 26, 2026 |
| 144 | Notice of proposed sale | Aug 27, 2026 | — |
| 144 | Notice of proposed sale | Aug 26, 2026 | — |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 144 | Notice of proposed sale | Aug 14, 2026 | — |
| 144 | Notice of proposed sale | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 10-Q | Quarterly report | Aug 11, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2026 | Aug 11, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 30, 2026 | Jul 30, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 27, 2026 | — |
| 424B4 | Prospectus | Jun 25, 2026 | — |
| EFFECT | Filing | Jun 23, 2026 | — |
| S-1MEF | Filing | Jun 23, 2026 | — |
| S-1 | Registration statement | Jun 22, 2026 | — |
| DRS | Filing | Jun 11, 2026 | — |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 8, 2026 | Jun 8, 2026 |
| 4 | Insider transaction | Jun 4, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | May 29, 2026 | May 27, 2026 |
| 4/A | Filing | May 29, 2026 | Jul 29, 2025 |
| 3/A | Filing | May 29, 2026 | Jul 29, 2025 |
| 144 | Notice of proposed sale | May 27, 2026 | — |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 144 | Notice of proposed sale | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2026 | — |
| 144 | Notice of proposed sale | May 14, 2026 | — |
| 144 | Notice of proposed sale | May 14, 2026 | — |
| 144 | Notice of proposed sale | May 14, 2026 | — |
| S-8 | Employee stock plan registration | May 12, 2026 | — |
| 10-Q | Quarterly report | May 12, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 12, 2026 | May 12, 2026 |
| ARS | Annual report to shareholders | Apr 22, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 22, 2026 | — |
| DEF 14A | Proxy statement | Apr 22, 2026 | Apr 22, 2026 |
| 4 | Insider transaction | Apr 6, 2026 | Apr 2, 2026 |
| 4/A | Filing | Apr 2, 2026 | Mar 6, 2026 |
| 4/A | Filing | Apr 2, 2026 | Mar 6, 2026 |
| 4/A | Filing | Apr 2, 2026 | Mar 6, 2026 |
| 4/A | Filing | Apr 2, 2026 | Mar 6, 2026 |
| 4/A | Filing | Apr 2, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 10-K | Annual report | Mar 5, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Oct 7, 2025 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 424B4 | Prospectus | Jan 26, 2026 | — |
| S-1MEF | Filing | Jan 23, 2026 | — |
| EFFECT | Filing | Jan 22, 2026 | — |
| CORRESP | Letter to the SEC | Jan 22, 2026 | — |
| CORRESP | Letter to the SEC | Jan 21, 2026 | — |
| CORRESP | Letter to the SEC | Jan 21, 2026 | — |
| 8-K |
Current report
Results of operations
|
Jan 21, 2026 | Jan 21, 2026 |
| S-1 | Registration statement | Jan 21, 2026 | — |
| 3 | Initial insider ownership | Jan 8, 2026 | Jan 5, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 8, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 3 | Initial insider ownership | Jan 7, 2026 | Jan 5, 2026 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 3, 2025 | — |
| DRS | Filing | Nov 3, 2025 | — |
| 4 | Insider transaction | Oct 6, 2025 | Oct 2, 2025 |
| 4 | Insider transaction | Oct 6, 2025 | Oct 2, 2025 |
| 4 | Insider transaction | Oct 6, 2025 | Oct 2, 2025 |
| 4 | Insider transaction | Oct 6, 2025 | Oct 2, 2025 |
| 8-K |
Current report
Officer or director change
|
Oct 3, 2025 | Sep 29, 2025 |
| 10-Q | Quarterly report | Sep 4, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Sep 4, 2025 | Sep 4, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| S-8 | Employee stock plan registration | Jul 31, 2025 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jul 31, 2025 | Jul 31, 2025 |
| 424B4 | Prospectus | Jul 31, 2025 | — |
| EFFECT | Filing | Jul 29, 2025 | — |
| 3 | Initial insider ownership | Jul 29, 2025 | Jul 29, 2025 |
| 3 | Initial insider ownership | Jul 29, 2025 | Jul 29, 2025 |
| 3 | Initial insider ownership | Jul 29, 2025 | Jul 29, 2025 |
| 3 | Initial insider ownership | Jul 29, 2025 | Jul 29, 2025 |
| 3 | Initial insider ownership | Jul 29, 2025 | Jul 29, 2025 |
| 3 | Initial insider ownership | Jul 29, 2025 | Jul 29, 2025 |
| 3 | Initial insider ownership | Jul 29, 2025 | Jul 29, 2025 |
| 3 | Initial insider ownership | Jul 29, 2025 | Jul 29, 2025 |
| 3 | Initial insider ownership | Jul 29, 2025 | Jul 29, 2025 |
| S-1MEF | Filing | Jul 29, 2025 | — |
| CERT | Nyse certification | Jul 28, 2025 | — |
| CORRESP | Letter to the SEC | Jul 25, 2025 | — |
| CORRESP | Letter to the SEC | Jul 25, 2025 | — |
| 8-A12B | Filing | Jul 25, 2025 | — |
| S-1/A | Amended registration statement | Jul 21, 2025 | — |
| S-1 | Registration statement | Jul 3, 2025 | — |
| DRS/A | Filing | Jun 13, 2025 | — |
| DRSLTR | Filing | Apr 4, 2025 | — |
| DRS/A | Filing | Apr 4, 2025 | — |
| UPLOAD | Letter from the SEC | Mar 10, 2025 | — |
| DRS/A | Filing | Feb 13, 2025 | — |
| D | Filing | Sep 27, 2024 | — |
| D | Filing | Jul 29, 2024 | — |
| D/A | Filing | Jul 3, 2024 | — |
| D | Filing | Jun 17, 2024 | — |
| D | Filing | May 28, 2024 | — |
| D | Filing | Sep 15, 2023 | — |
| DRS/A | Filing | Nov 17, 2022 | — |
| D | Filing | Nov 4, 2022 | — |
| DRSLTR | Filing | Aug 19, 2022 | — |
| UPLOAD | Letter from the SEC | Jun 21, 2022 | — |
| DRS | Filing | May 25, 2022 | — |
| D | Filing | Feb 23, 2022 | — |
| D/A | Filing | Mar 25, 2021 | — |
| D | Filing | Mar 19, 2021 | — |
| D | Filing | Nov 2, 2020 | — |
| D | Filing | Apr 3, 2020 | — |
| D/A | Filing | Jan 23, 2020 | — |
| D/A | Filing | Nov 27, 2019 | — |
| D | Filing | Jun 7, 2019 | — |
| D | Filing | Mar 15, 2019 | — |
| D | Filing | Jan 31, 2019 | — |
| D/A | Filing | Jan 28, 2019 | — |
| D | Filing | Nov 20, 2018 | — |
| D/A | Filing | Oct 30, 2018 | — |
| D | Filing | Jun 13, 2018 | — |
| D/A | Filing | Jan 26, 2018 | — |
| D/A | Filing | Oct 30, 2017 | — |
| D | Filing | Sep 15, 2017 | — |
| D | Filing | Jul 13, 2017 | — |
| D | Filing | Jun 16, 2017 | — |
| D | Filing | Dec 22, 2016 | — |
| D | Filing | Dec 13, 2016 | — |
| D | Filing | Aug 10, 2016 | — |
| D | Filing | Aug 10, 2016 | — |
| D | Filing | Aug 10, 2016 | — |
| D | Filing | May 29, 2015 | — |
| D | Filing | Nov 7, 2014 | — |
| D | Filing | Aug 21, 2013 | — |
| D | Filing | Jul 1, 2013 | — |
| D | Filing | Nov 2, 2012 | — |
| D | Filing | Jul 25, 2012 | — |
| D | Filing | Feb 28, 2012 | — |
| D | Filing | Dec 29, 2010 | — |
| D | Filing | Nov 1, 2010 | — |
| D | Filing | Nov 1, 2010 | — |
| D | Filing | Sep 14, 2010 | — |
| D | Filing | Sep 3, 2010 | — |
Showing 187 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Semiconductors & Related Devices (SIC 3674)
- Listed as
- AMBQ (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Austin, TX
- SEC filer status
- Non-accelerated filer, Smaller reporting company, Emerging growth company
- SEC CIK
- 1500412
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.