HUM · CIK 49071
What Humana Inc. told the SEC could break it.
Humana's defining exposure is its near-total reliance on government health programs: about 93% of its total premiums and services revenue in 2025 came from Medicare, military and Medicaid programs, with roughly 83% from federal contracts — chiefly CMS Medicare Advantage. As a government contractor, that leaves it exposed to CMS contract loss (contracts generally renew annually) and to legislative and regulatory changes to Medicare Advantage and Part D, any of which could hit its largest revenue source. The concentration is sharper still in one state: CMS contracts covering about 1.0 million Florida individual MA members were roughly 14% of revenue. It also flags the Inflation Reduction Act's Part D redesign, which eliminated the coverage gap and capped beneficiary out-of-pocket costs at $2,000, restructuring the plan economics it administers.
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.
Regulatory & policy
- government-contractor / Medicare Advantage program riskhigh
As a government contractor, Humana faces risks from CMS contract loss (generally renewed annually) and from legislative/regulatory changes to Medicare Advantage and Part D, which could materially affect its largest revenue source.
“As a government contractor, we are exposed to risks that may materially adversely affect our business or our willingness or ability to participate in government health care programs. A significant portion of our revenues relates to federal and state government health care coverage programs, including the Medicare, military services, and Medicaid programs. These programs accounted for approximately 93% of our total premiums and services revenue for the year ended December 31, 2025.”
SEC filing →As of 2026 - Inflation Reduction Act Medicare Part D redesignmedium
The IRA-mandated Part D redesign eliminated the coverage gap effective Jan 1, 2025 and caps beneficiary out-of-pocket at $2,000, restructuring Part D benefit phases and plan economics Humana administers.
“Effective January 1, 2025, the Medicare Part D coverage gap was eliminated as mandated by the Inflation Reduction Act of 2022. The standard Part D benefit now comprises three phases: the deductible phase, the initial coverage phase and the catastrophic coverage phase. Beneficiaries' out-of-pocket expenses for covered prescription drugs are capped at $2,000, after which they incur no additional cost sharing for the remainder of the year.”
Customer concentration
- U.S. federal government health programs (CMS / Medicare / TRICARE / Medicaid)high
Government health programs were ~93% of total premiums and services revenue in 2025, with ~83% from federal-government CMS contracts — an extreme single-payor concentration.
“We derived approximately 83 % of our total premiums and services revenue from contracts with the federal government in 2025, including 14 % related to our federal government contracts with the Centers for Medicare and Medicaid Services, or CMS, to provide health insurance coverage for individual Medicare Advantage members in Florida.”
SEC filing →As of 2026
Geographic concentration
- Florida Medicare Advantagemedium
CMS contracts for ~1.0 million Florida individual Medicare Advantage members accounted for ~14% of total premiums and services revenue, concentrating a large share in one state's MA book.
“At December 31, 2025, under our contracts with CMS we provided health insurance coverage to approximately 1.0 million individual Medicare Advantage members in Florida. These contracts accounted for approximately 14% of our total premiums and services revenue for the year ended December 31, 2025.”
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
“Carriers representing 10% or more of our total revenue are summarized as follows. The majority of the revenue was from the Medicare segment. Year Ended December 31, 2025 2024 Humana 35 % 24 % UnitedHealthcare (1) 23 % 22 % Aetna (1) 5 % 18 %”
Cited →“For the twelve months ended December 31, 2025, 2024, and 2023, the primary health plan partners that we served were United, Humana, Elevance, Aetna and Centene.”
Cited →“For the year ended June 30, 2025, three insurance carrier customers accounted for 37 % (UHC), 15 % (Aetna), and 11 % (Humana) of total revenue.”
Cited →
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