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

ALNYLAM PHARMACEUTICALS, INC. (ALNY)

CIK 1178670 · 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
HIGHS-3ASR on file 2020-06-05
= is there a registration (S-1/S-3 family) on file without a later withdrawal
no structured fee data on the live registrations, so this is a yes/no, not a size
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+7% O/S in 3y
= share count now vs 3 years ago (bands: 30% / 100%); a reverse split pushes this negative
Cash need
LOWoperating cash flow positive
= 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

2020-07-312026-07-24

Latest: 133.8M shares as of Jul 24, 2026 (10-Q).

Cash runway

Self-funding

profitable · generates cash

Full breakdown: cash runway tool · source filing →

Warrants

Warrants outstanding: 0.001 underlying shares, as reported Jul 13, 2005 (10-K).

Reported exercise price: $80 (aggregate figure as tagged; individual tranches vary).

Rough fully diluted estimate: 133.8M = 133.8M O/S + 0.001 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

NotePrincipalCarryingConv. priceRateIf converted
Convertible Senior Notes Due 2027$1.04B$362.8M$286.2~3.6M sh
Convertible Senior Notes Due 2028$661.3M$649.8M$670.110%~986,853 sh
Convertible Senior Notes Due 2028 Initial Amount$575.0Mnot tagged
Convertible Senior Notes Due 2027 Additional Amount$135.0Mnot tagged
Convertible Senior Notes Due 2028 Additional Amount$86.3Mnot tagged

If every note above converted at its tagged price: ~4.6M new shares on 133.8M currently outstanding. An estimate from principal ÷ conversion price, with inputs carrying different as-of dates; make-whole adjustments, capped calls and partial repurchases are not modeled.

Notes exactly as the company dimensioned them in its 10-Q filed Jul 30, 2026. Principal is face amount as tagged, not what remains after repurchases unless the filer updated the tag. A note the filer did not dimension is absent here, not absent from the balance sheet; the exhibits stay 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 outstanding133.8MJul 24, 2026
+ Warrants (aggregate, as tagged) (if exercised)0.001Jul 13, 2005
+ Convertible Senior Notes Due 2027 (if fully converted)3.6MSep 13, 2022
+ Convertible Senior Notes Due 2028 (if fully converted)986,853Sep 12, 2025
Fully diluted estimate138.4M+3.5% 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

Last 12 months: 1 executed · 0 registered.

EXECUTEDSep 12, 2025Unregistered share sale disclosed (8-K item 3.02)8-K
EXECUTEDSep 16, 2022Unregistered share sale disclosed (8-K item 3.02)8-K
REGISTEREDJun 5, 2020Automatic shelf registration — effective immediately (large filers)S-3ASR
EXECUTEDApr 13, 2020Unregistered share sale disclosed (8-K item 3.02)8-K
EXECUTEDApr 9, 2019Unregistered share sale disclosed (8-K item 3.02)8-K
EXECUTEDJan 15, 2019Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)424B5
EXECUTEDJan 14, 2019Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)424B5
EXECUTEDNov 14, 2017Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)424B5
EXECUTEDNov 13, 2017Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)424B5
EXECUTEDMay 25, 2017Unregistered share sale disclosed (8-K item 3.02)8-K
EXECUTEDMay 25, 2017Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)424B5
EXECUTEDMay 23, 2017Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)424B5

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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