KEX · CIK 56047
What Kirby Corporation told the SEC could break it.
2 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.
A limited set so far — we surface every cited disclosure we’ve extracted for KEX. More may follow as additional filings are processed.
In its own words
What could break it.
Supplier concentration
- single-supplier reliance for OEM engines/transmissions and steelmedium
Essential materials — OEM engines, transmissions, generators, electrical components and steel — are usually available, but supply-chain disruptions can hurt operations, especially where Kirby relies on a single supplier for a particular resource.
“Materials, components, and equipment essential to the Company's operations, such as original equipment manufacturer engines, transmissions, generators, electrical components and steel, are normally readily available, but shortages as a result of supply chain disruptions can adversely impact the Company's operations, particularly where the Company has a relationship with a single supplier for a particular resource.”
Litigation
- Portland Harbor Superfund (CERCLA PRP)low
Kirby is one of ~250 named Potentially Responsible Parties under CERCLA for the Portland Harbor Superfund site in Portland, Oregon.
“In 2009, the Company was named by the Environmental Protection Agency (the “EPA”) as a Potentially Responsible Party (“PRP”) in addition to a group of approximately 250 named PRPs under the Comprehensive Environmental Response, Compensation and Liability Act of 1981 (“CERCLA”) with respect to a Superfund site, the Portland Harbor Superfund site (“Portland Harbor”) in Portland, Oregon.”
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 suppliers
“The Company serves as a factory-authorized marine dealer for Caterpillar diesel engines in multiple states.”
Cited →MTU (Rolls-Royce Power Systems)
“Sales and service of MTU, Allison, and Daimler products accounted for approximately 12% of the Company's revenues during 2025.”
Cited →EMD Power Products (Electro-Motive Diesel / Progress Rail)
“The medium-speed operations are located in Houma, Louisiana, Chesapeake, Virginia, Paducah, Kentucky, Seattle, Washington, and Tampa, Florida, serving as the authorized distributor for EMD Power Products (“EMD”) throughout the United States.”
Cited →Daimler Truck
“Sales and service of MTU, Allison, and Daimler products accounted for approximately 12% of the Company's revenues during 2025.”
Cited →Allison Transmission Holdings, Inc.
“Sales and service of MTU, Allison, and Daimler products accounted for approximately 12% of the Company's revenues during 2025.”
Cited →
In the MyPRIA app, this is checked against the companies you actually own.
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