Is AMBQ diluting shareholders?

Read three numbers together: shares outstanding over time (24.2M as of 2026-08-07), warrants that can convert into new shares (238,931 reported), and how much cash runway remains (~223.52910106653124 months). A company short on cash with live registrations is structurally likely to issue shares.

Where do these numbers come from?

SEC EDGAR only: the XBRL company-facts API for shares, warrants and cash, and filing metadata for registrations and pricings. Every figure shows its source form, and nothing here is estimated by us beyond the arithmetic stated next to it.

Why might a warrant tranche be missing from the table?

The tranche table is built from the dimensions the company tagged in its own 10-Q or 10-K XBRL. A tranche the filer chose not to dimension does not appear, and its absence proves nothing: the exhibits remain the ground truth. Everything shown carries the filing it came from.

Dilution profile // every instrument, one screen, from SEC filings

Ambiq Micro, Inc. (AMBQ)

CIK 1500412 · all EDGAR filings →

Overall dilution risk

HIGHworst of 4 computed signals (offering ability)

= the worst band among the computed sub-ratings, no hidden weighting

Offering ability

HIGH$255M registered

= total registered offering amount from the fee exhibits of live registrations (bands: $1M / $20M)

one or more live registrations had no structured fee data, so the true total is AT LEAST this

Overhead supply

LOWwarrants = 1% of O/S

= warrant shares outstanding divided by current shares outstanding (bands: 20% / 50%)

warrants only; converts, ATMs and equity lines are not in free structured data, so the true overhead is AT LEAST this

Historical dilution

MEDIUM+33% O/S in 3y

= share count now vs 3 years ago (bands: 30% / 100%); a reverse split pushes this negative

Cash need

LOW~223.5 months of runway

= cash vs trailing operating burn (bands: 6mo / 24mo; positive operating CF = low)

Same rating bands the category standard uses, but free, with the formula on the chip and the gaps in the data said out loud.

Shares outstanding over time

Latest: 24.2M shares as of Aug 7, 2026 (10-Q).

Cash runway

Self-funding

generates cash

Full breakdown: cash runway tool · source filing →

Warrants

Warrants outstanding: 238,931 underlying shares, as reported Jun 30, 2026 (10-Q).

Reported exercise price: $12.6 (aggregate figure as tagged; individual tranches vary).

Rough fully diluted estimate: 24.4M = 24.2M O/S + 238,931 warrant shares. An estimate, not a filing figure: it ignores converts, options and RSUs, and the two inputs carry different as-of dates.

Convertible notes

No convertible-note facts tagged in the 10-Q filed Aug 11, 2026. If convertible notes exist, their terms live in exhibit prose for this filer and are not parsed; absence of a tag is not proof of absence. The exhibits are the ground truth.

Fully diluted build-up

Shares outstanding plus every potential-share instrument the filer tagged in XBRL, each at its own as-of date. An estimate assembled from filed figures, not a filing figure itself.

Shares outstanding	24.2M	Aug 7, 2026
+ Warrants (aggregate, as tagged) (if exercised)	238,931	Jun 30, 2026
Fully diluted estimate	24.4M	+1.0% vs O/S

Still excluded, because the filer does not tag them in countable form: employee options and RSUs, any instrument living only in exhibit prose, and instruments above missing a share count. Inputs carry different as-of dates, shown per row. Each figure traces to the tranche and note tables above and their cited filings.

Registrations and offerings

Registered offering capacity on live registrations: $254.6Mfrom the structured fee exhibits; registered is not remaining, takedowns are not subtracted

S-1Jun 22, 2026$169.1M registeredfiling →

S-1Jan 21, 2026$85.5M registeredfiling →

S-1Jul 3, 2025no structured fee exhibit in this filing (predates fee-data XBRL or fee deferred)filing →

Last 12 months: 2 executed · 4 registered.

EXECUTEDJun 25, 2026Final prospectus — offering priced (typical for IPOs and marketed share deals)424B4 →

REGISTEREDJun 23, 2026S-1MEF registration — capacity to sell shares, not a sale yetS-1MEF →

EFFECTIVEJun 23, 2026SEC declared a registration effective — selling can beginEFFECT →

REGISTEREDJun 22, 2026S-1 registration — capacity to sell shares, not a sale yetS-1 →

EXECUTEDJan 26, 2026Final prospectus — offering priced (typical for IPOs and marketed share deals)424B4 →

REGISTEREDJan 23, 2026S-1MEF registration — capacity to sell shares, not a sale yetS-1MEF →

EFFECTIVEJan 22, 2026SEC declared a registration effective — selling can beginEFFECT →

REGISTEREDJan 21, 2026S-1 registration — capacity to sell shares, not a sale yetS-1 →

EXECUTEDJul 31, 2025Final prospectus — offering priced (typical for IPOs and marketed share deals)424B4 →

REGISTEREDJul 29, 2025S-1MEF registration — capacity to sell shares, not a sale yetS-1MEF →

EFFECTIVEJul 29, 2025SEC declared a registration effective — selling can beginEFFECT →

REGISTEREDJul 21, 2025S-1/A registration — capacity to sell shares, not a sale yetS-1/A →

Full history and shelf status: offering checker · S-3 shelf checker

Source: SEC EDGAR XBRL company facts and filing metadata, fetched live and cached briefly. Share counts are cover-page figures with their form named. Warrant tranches and convertible notes come from the dimensioned facts in the latest 10-Q/10-K instance document, exactly as the company tagged them; untagged tranches and notes are absent, not disproven. Nothing on this page is manually verified and nothing is behind a login: what free data supports is shown, what it cannot support is stated. Not investment advice.

Keep going: float checker · offering calendar · short-squeeze screener · full AMBQ workspace