HWM · CIK 4281
What Howmet Aerospace Inc. told the SEC could break it.
Howmet's disclosures cluster on its concentration in aerospace at both ends of its business. About 70% of 2025 revenue came from commercial and defense aerospace, so its results track OEM aircraft build rates, and two engine makers — RTX and GE Aerospace — each accounted for roughly 11% of third-party sales, mostly jet-engine components. On the input side it depends on limited- or sole-source suppliers for critical raw materials such as titanium sponge and specialized metal alloys, where supply constraints could impair production or force costly alternatives. Operating across Europe, Mexico, China and Japan, it also flags tariff exposure — including uncertainty over its ability to recover tariffs — alongside currency and political risk.
4 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Customer concentration
- RTX ~11% and GE Aerospace ~11% of third-party sales; ~70% of revenue from aerospace marketsmedium
RTX Corporation and GE Aerospace each represented ~11% of Howmet's third-party sales in 2025 (primarily jet engine components), and ~70% of total revenue came from commercial/defense aerospace markets — concentrating results in two engine-maker customers and in aerospace OEM build rates.
“RTX Corporation and GE Aerospace each represented approximately 11 % of the Company's third-party sales for the year ended December 31, 2025.”
SEC filing →As of 2026 - aerospace OEM aircraft-build-rate dependence (~70% of revenue from commercial/defense aero)medium
Approximately 70% of Howmet's revenue came from products sold to commercial and defense aerospace markets in 2025; the timing and level of future aircraft builds by OEMs are subject to change and uncertainty, which may cause results to differ from prior periods.
“The Company derived approximately 70% of its revenue from products sold to the commercial and defense aerospace markets for the year ended December 31, 2025. The timing and level of future aircraft builds by original equipment manufacturers are subject to changes and uncertainties”
Sole-source dependency
- limited/sole-source suppliers for titanium sponge and specialized metal alloyshigh
For certain raw materials and services Howmet depends on a number of limited-source or sole-source suppliers — such as for titanium sponge and specialized metal alloys; supply constraints could impair production or force purchases from alternative sources that may not be available in sufficient quantities or at favorable prices.
“For certain raw materials and services, we depend on a number of limited source or sole source suppliers, such as for titanium sponge and specialized metal alloys. Supply constraints could impact our production or force us to purchase materials and other supplies from alternative sources”
Regulatory & policy
- international operations (Europe, Mexico, China, Japan) + tariffs / tariff-recovery uncertainty / FXmedium
Howmet has operations in numerous countries (Europe, Mexico, China, Japan), exposing it to economic/political/legal instability, and the timing, extent and level of tariffs by various governments — and its ability to recover tariffs — are subject to changes and uncertainties, alongside FX/inflation effects.
“The timing, extent, application, and level of tariffs by various governments and our ability to recover tariffs are subject to changes and uncertainties.”
SEC filing →As of 2026
The hidden graph
Who it depends on, and who depends on it.
Relationships surfaced from filings, including ones disclosed by the other side, which is how the non-obvious ones come to light.
Its customers
“RTX Corporation and GE Aerospace each represented approximately 11 % of the Company's third-party sales for the year ended December 31, 2025.”
Cited →“RTX Corporation and GE Aerospace each represented approximately 11 % of the Company's third-party sales for the year ended December 31, 2025.”
Cited →
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