Humana sustainability score: 36/100
Making progress starts at 46. The highest score on SINK is 71.
Humana Inc. is a US health insurer headquartered in Louisville, Kentucky, operating Medicare, Medicaid and other health plans, pharmacy benefits and CenterWell senior primary care clinics. Incorporated in 1964 (its roots go back to 1961), it had about 67,060 employees and $129.7 billion in FY2025 revenue.
Founded 1964Head office Louisville, Kentucky, United StatesStaff ~67,060 (FY2025)Revenue $129,664M revenues (FY2025)Website ↗
Humana's Scope 1 and 2 emissions, reported with third-party assurance, fell from 104,118 tCO2e in 2022 to 95,418 in 2024 and rose slightly to 96,532 in 2025. It attributes a 64% fall in Scope 3 in 2025 to methodology changes, not physical cuts. Renewable certificates cover about 9% of its electricity. It reports financed emissions of 2.87 Mt for 2025 but does not say how they were calculated, and its CEO sits on the Business Roundtable.
Humana scores 36/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Scores are free. Nobody can pay to change a score, speed it up or hide it. Last verified October 2026.
That places Humana joint 542nd of 1,023 companies scored, and joint 8th of 17 in Insurance.
What is Humana doing well, and where does it fall short?
Strongest on Carbon Footprint: Operations and Targets & Commitments (7/10, 7/10). Weakest on Energy Source and Nature & Biodiversity Impact (3/10, 3/10).
Where Humana lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
What would raise this score
- How clean its energy isMove to a renewable energy tariff or make a major efficiency investment.
- Its effect on natureAssess its effect on nature and publish a basic environmental policy.
- Its effect on waterMonitor its water use and take measures to reduce it.
Every question that lost points
- Emissions from its own operations7/10Its own emissions aren't independently verified or tracked over several years.
- Emissions from its supply chain6/10No full value-chain map or supplier engagement programme.
- Whether its emissions are falling4/10No evidence of a year-on-year fall in its total emissions.
- How clean its energy is3/10No renewable energy tariff or major efficiency investment shown.
- Its effect on nature3/10No assessment of its effect on nature, and no basic environmental policy.
- How it uses materials and handles waste5/10No measurable waste or recycling targets reported publicly.
- Its effect on water3/10No monitoring of water use, or no measures to reduce it.
- Its climate targets7/10No validated long-term net zero target.
- How openly it reports6/10No mission-locked structure, such as B Corp certification.
- Its record on controversies6/10Points deducted for controversies or its business model. The finding is under question 10.
A score changes when the evidence does. We use new published evidence at the next rescore. Anyone can send us new evidence, free. How to send it.
How is Humana's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleWhat evidence is Humana's score based on?
9 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
44% of them were published by Humana itself; the rest come from independent sources.
Humana reports financed emissions of 2.87 Mt for 2025 but doesn't say how they were calculated, so the floor applies.
“Total Scope 1 GHG emissions (CO2, CH4, N2O, HFCs) 28,852 28,166 36,8551 40,641*”
“we established a Supplier Code of Conduct that embeds”
“Review and develop the adoption of renewable energy strategies”
“We provide a full report of our greenhouse gas (GHG) emissions, energy consumption and water usage within our Impact Report”
“which could occur more frequently or with more intense effects as a result of the impact of global climate change”
“Humana Inc.'s portfolio targets cover 30% of its total investment and lending by”
“67.3% of its listed equity and corporate bond portfolio by invested value setting SBTi-validated targets by 2029 from a 2022 base year”
“Specific steps include continued investment in more energy efficient buildings, procuring additional sources of renewable energy and transitioning its fleet.”
“Jim Rechtin started with Humana January 8, 2024”
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How does Humana compare with other insurance companies?
Where Humana sits among insurance peers.
Among the 17 major insurance brands we've scored, Humana is tied =8th of 17, with 1 other.
Who scores higher in Insurance?
The 3 companies in the sector scoring nearest above Humana.
AXA's financed emissions fell to 25.2 MtCO2e in 2025, less than half the 2019 level, and the emissions of its own operations are down 64%.
See the breakdown →Cigna reports operational emissions largely covered by renewable certificates rather than power purchase agreements.
See the breakdown →Admiral discloses mandatory carbon metrics but hasn't cut absolute emissions—Scope 1&2 rose 10% in 2025.
See the breakdown →Which companies moved this week, and why.
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