Is LUNG diluting shareholders?

Read three numbers together: shares outstanding over time (42.9M as of 2026-07-31), warrants that can convert into new shares (0 reported), and how much cash runway remains (~20.69792438843588 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

Pulmonx Corp (LUNG)

CIK 1127537 · 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$200M registered

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

registered capacity, not remaining: amounts already taken down are not subtracted yet

Overhead supply

LOWwarrants = 0% 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

LOW+13% O/S in 3y

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

Cash need

MEDIUM~20.7 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: 42.9M shares as of Jul 31, 2026 (10-Q).

Cash runway

Funded — but tight

~21 months of cash · watch

Full breakdown: cash runway tool · source filing →

Warrants

Tranche	Warrants	Exercise price	Term	Notes
Perceptive Warrant	1.0M	$1.92	—	FV $1.4M
Initial Warrants	not tagged	not tagged	7y	FV $1.1M

Tranches exactly as the company dimensioned them in its 10-Q filed Aug 4, 2026 →. Groupings can overlap (a “Series E and F” row is not additive with a “Series E” row), so do not sum this column. A tranche the filer did not tag is absent here, not absent from the cap table. DOWN-ROUND = the filer tagged price-protection accounting scoped to that tranche.

Warrants outstanding: 0 underlying shares, as reported Sep 30, 2021 (10-Q).

Reported exercise price: $10570 (aggregate figure as tagged; individual tranches vary).

Balance-sheet fair value of warrants: $238,000 as of Jun 30, 2026.

Rough fully diluted estimate: 42.9M = 42.9M O/S + 0 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 4, 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	42.9M	Jul 31, 2026
+ Perceptive Warrant (if exercised)	1.0M	Mar 2, 2026
Fully diluted estimate	43.9M	+2.3% 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: $200.0Mfrom the structured fee exhibits; registered is not remaining, takedowns are not subtracted

S-3Sep 26, 2025$200.0M registeredfiling →

Last 12 months: 1 executed · 2 registered.

EXECUTEDMar 5, 2026Unregistered share sale disclosed (8-K item 3.02)8-K →

EFFECTIVENov 25, 2025SEC declared a registration effective — selling can beginEFFECT →

REGISTEREDNov 24, 2025S-3/A registration — capacity to sell shares, not a sale yetS-3/A →

REGISTEREDSep 26, 2025S-3 registration — capacity to sell shares, not a sale yetS-3 →

EFFECTIVENov 15, 2022SEC declared a registration effective — selling can beginEFFECT →

REGISTEREDNov 14, 2022S-3/A registration — capacity to sell shares, not a sale yetS-3/A →

REGISTEREDNov 3, 2022S-3 registration — capacity to sell shares, not a sale yetS-3 →

EXECUTEDOct 1, 2020Final prospectus — offering priced (typical for IPOs and marketed share deals)424B4 →

REGISTEREDSep 30, 2020S-1/A registration — capacity to sell shares, not a sale yetS-1/A →

MARKETINGSep 30, 2020Free-writing prospectus — offering being marketedFWP →

EFFECTIVESep 30, 2020SEC declared a registration effective — selling can beginEFFECT →

REGISTEREDSep 28, 2020S-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.

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