AMBQ at a glance
Ambiq Micro, Inc. (AMBQ, SEC CIK 1500412) filed its latest 10-K annual report on March 5, 2026, a 10-Q quarterly report on August 11, 2026, an 8-K current report on August 11, 2026 and Form 4 insider filings as recently as October 6, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.
- For the fiscal year ended December 31, 2025 (FY2025), Ambiq Micro, Inc. (AMBQ) reported revenue of $72.5 million (down 4.7% from FY2024) and a net loss of $36.5 million. Diluted EPS was -$4.57.
- As of June 30, 2026, 26 institutional investment managers tracked by SignalX reported holding Ambiq Micro, Inc. (AMBQ) shares worth $632.0 million in 13F-HR filings.
- The most recent insider open-market sale reported on Form 4 was by Chen Sean Chihhsiang on October 5, 2026 of 800 shares at $68.08 per share.
- In the last 90 days, AMBQ insiders reported 0 open-market purchases ($0) and 50 open-market sales ($20.7M) on Form 4, a net sale of $20.7M.
Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).
- Revenue · FY2025
- $72.5M
- −4.7% vs prior year
- Insiders · 90 days
- 0 buys · 50 sells
- Net −$20.7M
- 13F holders
- 26 funds
- $632.0M · +7 vs prior quarter
- Latest 8-K
- Aug 11, 2026
- Item 2.02
AI 8-K Current Report Analysis
The most recent material events, by 8-K item
Item EX-99.1: Item EX-99.1
- Q2 net sales $33.901M, up 89.7% YoY and 35.3% sequentially, confirming strong edge AI demand
- GAAP gross margin 45.0%, up 4.9 points YoY; GAAP net loss narrowed to $7.115M from $8.496M
Item 2.02: Results of Operations and Financial Condition
- Q2 2026 results covered quarter ended June 30, 2026
- Press release issued August 11, 2026 and filed as Exhibit 99.1
Item 7.01: Regulation FD Disclosure
- CEO letter furnished as Exhibit 99.1 through Ambiq’s investor-relations website
- Regulation FD disclosure indicates investor-relevant information is contained in the CEO communication
Item EX-99.1: Item EX-99.1
- Ambiq raised approximately $372 million gross through its IPO and two follow-on offerings during its first public-company year
- Approximately 80% of customers integrating AI supports demand for Ambiq’s ultra-low-power edge AI platform
Item 5.07: Submission of Matters to a Vote of Security Holders
- Stockholders re-elected Timothy Chen and Ker Zhang, Ph.D. to Class I director terms ending at the 2029 annual meeting
- Director votes included 2,701,784 broker non-votes, limiting voting participation on Proposal 1
AI summaries of AMBQ 8-K current reports filed with the SEC. What 8-K item codes mean
SignalX for AMBQ
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Recent Insider Transactions (Form 4)
Latest reported trades by officers, directors and 10% owners
| Insider | Type | Date | Shares | Price |
|---|---|---|---|---|
| Chen Sean Chihhsiang | Sell | Oct 5, 2026 | 800 | $68.08 |
| Chen Sean Chihhsiang | Sell | Oct 5, 2026 | 100 | $69.51 |
| Chen Sean Chihhsiang | Sell | Oct 5, 2026 | 5,508 | $66.38 |
| Chen Sean Chihhsiang | Sell | Oct 5, 2026 | 1,797 | $67.29 |
| Esaka Fumihide | Sell | Oct 2, 2026 | 8,585 | $69.77 |
| Esaka Fumihide | Sell | Oct 2, 2026 | 7,113 | $69.11 |
| Chen Sean Chihhsiang | Sell | Oct 2, 2026 | 3,008 | $69.77 |
| Chen Sean Chihhsiang | Sell | Oct 2, 2026 | 2,492 | $69.11 |
Financial SummaryXBRL
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Profitability | |||
| Revenue | - | $76.1M | $72.5M |
| Gross Profit | - | $24.3M | $32.1M |
| Operating Income | - | -$40.6M | -$39.5M |
| Net Income | - | -$39.7M | -$36.5M |
| Gross Margin | - | 31.9% | 44.3% |
| Op. Margin | - | -53.4% | -54.5% |
| Net Margin | - | -52.1% | -50.3% |
| Balance Sheet | |||
| Total Assets | - | $104.3M | $184.7M |
| Equity | -$261.0M | -$292.4M | $162.5M |
| ROE | - | 13.6% | -22.4% |
| Per Share | |||
| EPS | - | $-113.50 | $-4.57 |
| Cash Flow | |||
| Operating CF | - | -$21.4M | -$19.7M |
Source: XBRL data in Ambiq Micro, Inc. (AMBQ)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →
13F Fund Holdings: Quarterly Trend
Latest: Q2 2026Aggregate AMBQ share value held by 13F filers tracked by SignalX, by quarter.
Quarterly totals table
| Quarter | Funds | Total value |
|---|---|---|
| Q2 2026 | 26 | $632.0M |
| Q1 2026 | 19 | $94.5M |
| Q4 2025 | 15 | $30.0M |
| Q3 2025 | 18 | $29.6M |
- Two Sigma Investments+615.0K (+1671%)
- State Street Corp+601.8K (+231%)
- BlackRock+367.5K (+36%)
- Renaissance Technologies LLC+172.2K (+404%)
- Bank of America Corp+155.2K (+323%)
- Franklin Resources−318.5K (-59%)
- Ameriprise Financial−13.0K (-35%)
- D.E. Shaw & Co+983.9K
- Citadel Advisors LLC+122.4K
- Invesco Ltd+10.2K
- AQR Capital Management+6.8K
- Prudential Financial+3.0K
Source: 13F-HR filings on SEC EDGAR (aggregated from 78 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work
AMBQ filing archive
AI analysis pages for each 10-K, 10-Q and 8-K
Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4
| Form | Filing date | Period | Analysis | SEC |
|---|---|---|---|---|
| 4 | Oct 6, 2026 | - | - | - |
| 4 | Oct 6, 2026 | - | - | - |
| 4 | Oct 6, 2026 | - | - | - |
| 4 | Oct 6, 2026 | - | - | - |
| 4 | Sep 17, 2026 | - | - | - |
| 4 | Sep 15, 2026 | - | - | - |
| 4 | Sep 15, 2026 | - | - | - |
| 4 | Sep 15, 2026 | - | - | - |
| 4 | Sep 9, 2026 | - | - | - |
| 4 | Sep 9, 2026 | - | - | - |
| 4 | Sep 2, 2026 | - | - | - |
| 4 | Aug 28, 2026 | - | - | - |
| 4 | Aug 18, 2026 | - | - | - |
| 4 | Aug 18, 2026 | - | - | - |
| 10-Q | Aug 11, 2026 | Jun 30, 2026 | - | |
| 8-K | Aug 11, 2026 | - | Analysis | - |
| 8-K | Jul 30, 2026 | - | Analysis | - |
| SC 13G | Jul 27, 2026 | - | - | |
| 4 | Jun 10, 2026 | - | - | |
| 4 | Jun 10, 2026 | - | - | |
| 4 | Jun 10, 2026 | - | - | |
| 4 | Jun 10, 2026 | - | - | |
| 4 | Jun 10, 2026 | - | - | |
| 8-K | Jun 8, 2026 | - | Analysis | |
| 4 | Jun 4, 2026 | - | - |
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AMBQ SEC filings: frequently asked questions
Are AMBQ insiders buying or selling?
In the last 90 days, Ambiq Micro, Inc. (AMBQ) officers, directors and 10% owners reported no open-market purchases and 50 open-market sales worth $20.7 million by 5 insiders on Form 4. Many insider sales are pre-planned or for taxes, so purchases usually carry more information.
Which institutions hold AMBQ stock?
As of June 30, 2026, the largest Ambiq Micro, Inc. (AMBQ) holders among the 13F filers tracked by SignalX were BlackRock ($121.9 million), D.E. Shaw & Co ($86.9 million), State Street Corp ($76.1 million), Vanguard Capital Management LLC ($67.9 million), Two Sigma Investments ($57.6 million). 13F-HR reports are filed up to 45 days after each quarter ends.
What was AMBQ's revenue in fiscal year 2025?
For the fiscal year ended December 31, 2025 (FY2025), Ambiq Micro, Inc. (AMBQ) reported revenue of $72.5 million (down 4.7% from FY2024) and a net loss of $36.5 million. Diluted EPS was -$4.57. The figures come from the XBRL data in the 10-K.
What did AMBQ report in its latest 8-K?
Ambiq Micro, Inc. (AMBQ) filed an 8-K on August 11, 2026 reporting Item 2.02 (Results of Operations and Financial Condition). Q2 net sales $33.901M, up 89.7% YoY and 35.3% sequentially, confirming strong edge AI demand.
What are the latest AMBQ SEC filings?
Ambiq Micro, Inc. (AMBQ) filed its latest 10-K annual report on March 5, 2026, a 10-Q quarterly report on August 11, 2026, an 8-K current report on August 11, 2026 and a Form 4 insider filing on October 6, 2026.
What is AMBQ's SEC CIK number?
Ambiq Micro, Inc. (AMBQ)'s SEC Central Index Key (CIK) is 1500412. EDGAR lists every AMBQ filing under that number.
Ask anything about AMBQ
The research agent reads AMBQ's filings, financials, insider trades and 13F holders, then answers with sources.