Splunk sustainability score: 45/100
Making progress starts at 46. The highest score on SINK is 71.
Splunk provides security and observability software for IT operations. It was founded in 2003 and is headquartered in San Francisco.
More about Splunk
Cisco completed its $28 billion acquisition of Splunk in March 2024; Splunk has been part of Cisco since then and is no longer publicly traded. The financial figures shown are for fiscal year 2023 (year ended 31 January 2023), Splunk's last annual report as a standalone public company.
Founded 2003Head office United StatesStaff ~8,000 (as of 31 Jan 2023, Splunk Form 10-K FY2023)Revenue ~$3.65B (FY2023, year ended 31 Jan 2023, Splunk Form 10-K)Website ↗
Splunk's most recent published emissions inventory covers FY22 (February 2021 to January 2022): Scope 1 374 tCO2e, Scope 2 2,437 tCO2e (market-based) and Scope 3 7,570 tCO2e, with an external assurance statement. SBTi lists Splunk's commitment as removed (expired commitment). No standalone Splunk sustainability report has been published since Cisco completed the acquisition in March 2024. No controversies were found.
Splunk scores 45/100 (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 Splunk joint 281st of 1,023 companies scored, and 23rd of 69 in SaaS / Digital Services.
What is Splunk doing well, and where does it fall short?
Strongest on Controversies & Red Flags and Carbon Footprint: Operations (7/10, 6/10). Weakest on Energy Source and Nature & Biodiversity Impact (2/10, 2/10).
Where Splunk 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.
- How it uses materials and handles wasteShow active waste reduction, reuse or repair.
Every question that lost points
- Emissions from its own operations6/10Its own emissions aren't independently verified or tracked over several years.
- Emissions from its supply chain3/10No assessment of where its supply-chain emissions come from.
- Whether its emissions are falling3/10No evidence its emissions are falling.
- How clean its energy is2/10No renewable energy tariff or major efficiency investment shown.
- Its effect on nature2/10No assessment of its effect on nature, and no basic environmental policy.
- How it uses materials and handles waste2/10No active waste reduction, reuse or repair shown.
- Its effect on water2/10No monitoring of water use, or no measures to reduce it.
- Its climate targets2/10No specific targets with dates.
- How openly it reports5/10No dedicated sustainability role, board oversight or public report.
- Its record on controversies7/10Points 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 Splunk's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleHas Splunk's score changed?
Splunk's score has been reviewed 3 times and currently stands where it started, at 45.
- 45 → 457 November 2026
Correction, 7 November 2026: removed an unsourced emissions figure. Score unchanged.
- 45 → 4514 October 2026
Bio correction (no score change): founded unset -> 2003. Source: Splunk FY2023 Form 10-K: 'We were incorporated in California in October 2003 and were reincorporated in Delaware in May 2006'
- Scored 4513 October 2026
Initial public score 45 (publish-draft)
What evidence is Splunk's score based on?
10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
40% of them were published by Splunk itself; the rest come from independent sources.
“Scope 2: 2,437 tCO2e (Market-Based)”
“Splunk's GHG inventory follows the Greenhouse Gas Protocol's Corporate Accounting and Reporting Standard.”
“Cisco Systems Inc. today completed its $28 billion purchase of Splunk, the largest acquisition in the networking giant’s four-decade history.”
“today announced it completed the acquisition of Splunk”
“As of January 31, 2023, we employed nearly 8,000 employees”
“Splunk Inc.”
“fail to submit their targets for validation within 24 months will have their commitments marked as ‘Removed’”
“commitment to set a suite of shorter-term five, ten, and fifteen year science-based targets by the end of fiscal year 2023”
“Splunk was awarded an EcoVadis Bronze medal in 2023 following an annual assessment”
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How does Splunk compare with other saas / digital services companies?
Where Splunk sits among saas / digital services peers.
Among the 69 major saas / digital services brands we've scored, Splunk sits 23rd of 69.
Who scores higher in SaaS / Digital Services?
The 3 companies in the sector scoring nearest above Splunk.
Meta matches its electricity with renewable power purchases, but its location-based Scope 2 has risen nearly 150% since 2019 and it left RE100 in 2026 over new gas power for AI data centres.
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