IPO registrations (S-1, F-1) · Registrants
Ambiq Micro, Inc.
- SEC CIK
- 1500412 · filings on EDGAR ↗
- Registration
- Form S-1, first filed 2025-07-03, last 2026-06-22; 3 initial registrations, 1 amendment
- Outcome
- Final prospectus filed 2025-07-31; declared effective 2025-07-29
- Industry (SIC)
- Semiconductors & Related Devices 3674
- Incorporated in
- DE
- Business address
- 6500 RIVER PLACE BOULEVARD, BUILDING 7, SUITE 200, Austin, TX 78730
- EIN
- 27-1911389
- Ticker
- AMBQ (NYSE)
- EDGAR entity type
- operating
- Insiders and CEO pay
- Ambiq Micro, Inc. on the corporate pages
Offering terms
- Proposed price range
- $22.00–$25.00 per share (S-1/A filed 2025-07-21)
- Final price
- $24.00 per share, within the range (424B4 filed 2025-07-31, an initial public offering)
- Shares sold
- 4,000,000
- Gross proceeds
- $96,000,000 before underwriting discounts and any over-allotment option
- Listing
- NYSE under the symbol AMBQ
- Lead underwriters
- BofA Securities; UBS
- Syndicate
- Needham & Company; Stifel
Read from the cover pages of the filings listed under “Prospectus pages read” below; check the document for anything that matters.
On this site
- Business registration: AMBIQ MICRO, INC. Fuzzy (name and state)
- Form 5500 plan sponsor: AMBIQ MICRO, INC EXACT (EIN (EXACT))
- Federal award recipient: AMBIQ MICRO, INC. Fuzzy (name and state)
- Form D issuer: Ambiq Micro, Inc. EXACT (CIK (EXACT))
- SEC filer: Ambiq Micro, Inc. EXACT (CIK (EXACT))
Filings 13
| Filed | Form | What it is | Name as filed | EDGAR |
|---|---|---|---|---|
| 2025-07-03 | S-1 | S-1 (registration) | Ambiq Micro, Inc. | 0001193125-25-155270 ↗ |
| 2025-07-21 | S-1/A | S-1/A (amendment) | Ambiq Micro, Inc. | 0001193125-25-161443 ↗ |
| 2025-07-29 | S-1MEF | S-1MEF (added securities) | Ambiq Micro, Inc. | 0001193125-25-168146 ↗ |
| 2025-07-29 | EFFECT | EFFECT (declared effective) | Ambiq Micro, Inc. | 9999999995-25-002393 ↗ |
| 2025-07-31 | 424B4 | 424B4 (final prospectus) | Ambiq Micro, Inc. | 0001193125-25-169401 ↗ |
| 2026-01-21 | S-1 | S-1 (registration) | Ambiq Micro, Inc. | 0001193125-26-017240 ↗ |
| 2026-01-22 | EFFECT | EFFECT (declared effective) | Ambiq Micro, Inc. | 9999999995-26-000267 ↗ |
| 2026-01-23 | S-1MEF | S-1MEF (added securities) | Ambiq Micro, Inc. | 0001193125-26-020091 ↗ |
| 2026-01-26 | 424B4 | 424B4 (final prospectus) | Ambiq Micro, Inc. | 0001193125-26-021460 ↗ |
| 2026-06-22 | S-1 | S-1 (registration) | Ambiq Micro, Inc. | 0001193125-26-276706 ↗ |
| 2026-06-23 | S-1MEF | S-1MEF (added securities) | Ambiq Micro, Inc. | 0001193125-26-280021 ↗ |
| 2026-06-23 | EFFECT | EFFECT (declared effective) | Ambiq Micro, Inc. | 9999999995-26-002095 ↗ |
| 2026-06-25 | 424B4 | 424B4 (final prospectus) | Ambiq Micro, Inc. | 0001193125-26-281376 ↗ |
Prospectus pages read 2
| Filed | Form | Read as | Range | Price | Shares | Proceeds | Listing | Underwriters | What was found | Document |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-07-21 | S-1/A | registration statement | $22.00–$25.00 | 3,400,000 | - | NYSE AMBQ | 4 | primary document; range, shares headline, cover names 4 | document ↗ | |
| 2025-07-31 | 424B4 | final prospectus | $24.00 | 4,000,000 | $96,000,000 | NYSE AMBQ | 4 | primary document; price sentence, shares headline, proceeds table, cover names 4 | document ↗ |
Officers, directors and large holders Forms 3, 4 and 5
| Insider | Role | Title | Filings | Years | On this site |
|---|---|---|---|---|---|
| Chen Sean Chihhsiang | Officer | President and COO | 7 | 2025–2026 | |
| Chen Timothy | Director | 6 | 2025–2026 | ||
| Esaka Fumihide | Director,Officer | Chief Executive Officer | 9 | 2025–2026 | |
| Hanson Scott McLean | Director,Officer | Chief Financial Officer; Chief Technology Officer | 9 | 2025–2026 | |
| HSIEH Wen Hsuan | Director | 4 | 2025–2026 | ||
| Kleiner Perkins Caufield & Byers XVI, LLC | TenPercentOwner | 2 | 2025 | ||
| KPCB XVI Associates, LLC | TenPercentOwner | 2 | 2025 | ||
| TAUTGES JOSEPH A | Director | 4 | 2025–2026 | ||
| Winzeler Jeffrey G | Officer | Chief Financial Officer | 6 | 2025–2026 | |
| ZHANG KER | Director | 5 | 2025–2026 | ||
| Connors Michele Kim | Officer | General Counsel | 5 | 2026 | |
| Banks Bernard Bennett | Director | 2 | 2026 |
Everyone who filed an insider report for this company, from the SEC’s Insider Transactions Data Sets (2006 on). Person pages are matched by name and state only.
Private offerings before or after (Form D)
| First filed | Issuer | Industry | Offering | Sold | Investors | Filings |
|---|---|---|---|---|---|---|
| 2024-09-27 | Ambiq Micro, Inc. | Other Technology | $300,000 | $300,000 | 1 | 1 |
| 2024-07-29 | Ambiq Micro, Inc. | Other Technology | $2,408,425 | $2,408,425 | 1 | 1 |
| 2024-06-17 | Ambiq Micro, Inc. | Other Technology | $3,010,532 | $3,010,532 | 1 | 1 |
| 2024-05-28 | Ambiq Micro, Inc. | Other Technology | $5,593,290 | $5,593,290 | 5 | 1 |
| 2023-09-15 | Ambiq Micro, Inc. | Other Technology | $95,000,000 | $83,221,578 | 41 | 2 |
| 2022-11-04 | Ambiq Micro, Inc. | Other Technology | $111,000 | $111,000 | 1 | 1 |
| 2022-02-23 | Ambiq Micro, Inc. | Other Technology | $50,000,002 | $44,806,764 | 27 | 1 |
| 2021-03-19 | Ambiq Micro, Inc. | Other Technology | $4,226,241 | $4,226,241 | 1 | 1 |
| 2020-11-02 | Ambiq Micro, Inc. | Other Technology | $133,276,399 | $127,276,398 | 64 | 2 |
| 2020-04-03 | Ambiq Micro, Inc. | Other Technology | $16,000,000 | $5,050,068 | 12 | 1 |
| 2019-06-07 | Ambiq Micro, Inc. | Other Technology | $15,216,112 | $12,716,112 | 33 | 2 |
| 2019-03-15 | Ambiq Micro, Inc. | Other Technology | $4,120,513 | $4,120,513 | 3 | 1 |
| 2019-01-31 | Ambiq Micro, Inc. | Other Technology | $1,010,857 | $1,010,857 | 1 | 1 |
| 2018-11-20 | Ambiq Micro, Inc. | Other Technology | $49,500 | $49,500 | 1 | 1 |
| 2018-06-13 | Ambiq Micro, Inc. | Other Technology | $30,000,001 | $29,050,410 | 29 | 2 |
| 2017-09-15 | Ambiq Micro, Inc. | Other Technology | $5 | $5 | 1 | 1 |
| 2017-07-13 | Ambiq Micro, Inc. | Other Technology | Indefinite | $0 | 1 | 1 |
| 2017-06-16 | Ambiq Micro, Inc. | Other Technology | $39,060,592 | $34,060,592 | 43 | 5 |
| 2016-12-22 | Ambiq Micro, Inc. | Other Technology | $4,500,000 | $2,458,624 | 16 | 1 |
| 2016-12-13 | Ambiq Micro, Inc. | Other Technology | $80,001 | $80,001 | 1 | 1 |
Data: SEC EDGAR. The quarterly full index (every S-1, S-1/A, F-1 and F-1/A since 1993, with the pricing prospectus, notice of effectiveness and withdrawal request of each registrant) and the company submissions data (SIC, state of incorporation, address, EIN, tickers, former names). Company details are what EDGAR holds today, not at the time of the filing.
Also on this site Fuzzy
| Record | Name as filed | Where | Dataset | Matched by |
|---|---|---|---|---|
| Business registration | AMBIQ MICRO, INC. | TX | State business registries | name and state |
| Plan sponsor | AMBIQ MICRO, INC | TX | Form 5500 (employee benefit plans) | name and state |
| Federal award recipient | AMBIQ MICRO, INC. | TX | Federal spending (USAspending) | name and state |
| Form D issuer | Ambiq Micro, Inc. | TX | Form D private offerings | CIK (EXACT) |
| Patent assignee | Ambiq Micro, Inc. | TX | Patents (USPTO) | name and state |
| SEC filer | Ambiq Micro, Inc. | SEC filers (EDGAR) | CIK (EXACT) | |
| Trademark owner | Ambiq Micro, Inc. | TX | Trademarks (USPTO) | name and state |
| Form 5500 plan sponsor | AMBIQ MICRO, INC | EIN (EXACT) |
Matched by an identifier (EIN, CIK, CRD), by name and state or city, or by street address; a shared name or address is not proof of the same person or organization. Every link says how it was made; how the cross-referencing works.
Others with the same interests
SIC industry Semiconductors & Related Devices, TX first:
- SILICON LABORATORIES INC. TX
- SigmaTel, LLC TX
- MICROTUNE INC TX
- WINTEGRA INC TX
- CHORUM TECHNOLOGIES INC TX
- APPLIED OPTOELECTRONICS, INC. TX
- FREESCALE SEMICONDUCTOR INC TX
- China Inc TX
- Ideal Power Inc. TX
- Resonant Inc TX
In other datasets, the same topic (Technology) in TX:
- Lobbying client: 3001 INC (Federal lobbying (LDA))
Interests: Semiconductors & Related Devices · Technology