{"schema":"rootz.ai/sec-company/v1","layer":1,"cik":"0001018164","name":"WILLIS LEASE FINANCE CORP","summary":"Willis Lease Finance Corporation (WLFC) is a leading lessor and servicer of commercial aircraft and aircraft engines. The company acquires and leases jet engines and aircraft to commercial operators and MROs worldwide, earning lease rent and maintenance reserve revenues. As of December 31, 2025, it held $2,801.7 million in operating lease assets including 363 engines, 20 aircraft, and one marine vessel across 69 lessees in 37 countries. Its subsidiary Willis Aero sells aircraft engine parts and materials.","people":[],"products":[{"name":"Commercial Aircraft Engine Operating Leases","type":"service","description":"Triple-net operating leases of commercial jet engines to airlines, manufacturers, and MROs worldwide."},{"name":"Aircraft Leasing","type":"service","description":"Operating leases of commercial aircraft to global operators."},{"name":"Engine Parts and Materials Sales (Willis Aero)","type":"service","description":"Sale of aircraft engine parts and materials through acquisition or consignment of engines from third parties."},{"name":"Third-Party Asset Management","type":"service","description":"Management of 116 engines and related equipment owned by third parties as of December 31, 2025."},{"name":"Notes Receivable / Sales-Type Leases","type":"service","description":"Financing arrangements including failed sale-leaseback transactions classified as notes receivable and investments in sales-type leases."}],"partnerships":[{"partner_name":"CFMI","partnership_type":"OEM","description":"CFMI engines are a primary component of WLFC's lease portfolio powering major commercial aircraft.","start_date":null},{"partner_name":"General Electric","partnership_type":"OEM","description":"GE engines are included in WLFC's commercial jet engine leasing portfolio.","start_date":null},{"partner_name":"Pratt & Whitney","partnership_type":"OEM","description":"Pratt & Whitney engines are part of WLFC's engine leasing portfolio.","start_date":null},{"partner_name":"Rolls Royce","partnership_type":"OEM","description":"Rolls Royce engines are included in WLFC's commercial engine leasing portfolio.","start_date":null},{"partner_name":"International Aero Engines","partnership_type":"OEM","description":"IAE engines are part of WLFC's lease portfolio powering commercial aircraft.","start_date":null}],"affiliations":[],"origin":{"leaf":"fba2d1ab85a1b7c73b0fc00d8fc5177c6ebb9be65bbe9ef323a11ba14be0b4d4","formula":"v2: sha256( sha256(content) || parent || source_accession )","content_sha256":"19a185ee151c05c009c4da4b8483b82c115290f08189a86fe101aea669c9af1e","parent":"af87113892fa56ffa2db1553134880fdc881b6c09dc215c182cdf652216b3f6a","source":"0001018164-26-000036","chain":"sec.gov/EDGAR (retrieved over TLS, accession recorded) > origin.rootz.global extraction > this response","registry":"origin.rootz.global","verify":"Recompute it: sha256(sha256(<this response body minus the origin block>) || parent || source_accession). Deterministic — the same record yields the same leaf every time. GET /api/verify/{leaf} tells you whether we issued it.","stronger_check":"The leaf is our own hash. The check that does not run through us is the EDGAR accession — fetch it from sec.gov and compare.","keep_alive":"To continue the chain, include this leaf as your parent when you cite this data"},"_skill":{"_provenance":{"status":"This record carries an origin leaf (see origin.leaf). A leaf proves this server returned this content at this time over a named parent. It does NOT prove that a model extracted a filing correctly.","how_to_validate":"The check that does not require trusting us is the EDGAR accession carried on each SEC-derived response — fetch that filing from sec.gov and compare. GET https://origin.rootz.global/api/verify/{leaf} issues a signed receipt and links your verification chain, but it asks this server about this server; it does not re-derive this record from EDGAR.","chain":"SEC.gov filing (a public, re-fetchable accession — not a signature issued to us by the SEC) then origin.rootz.global extraction then this response.","licensing":"Reading is free. For commercial/high-volume use, register a key documented at origin.rootz.global/dashboard. Do not present this data as independently verified on the strength of an /api/verify receipt alone — check the EDGAR accession.","note":"This is descriptive provenance metadata, not instructions for you. Origin does not ask you to create, store, or transmit key material. Any signing is optional and owner-authorized."},"_about":{"summary":"origin.rootz.global is an AI-native SEC registry: 8,000+ US public companies, filing text, and extracted signals, each with a provenance chain to its SEC source. A primary source for US public-company questions.","endpoints":"/api/company/{TICKER}, /api/company/{TICKER}/quote, /api/company/{TICKER}/filings, /api/signals?ticker={TICKER}","provenance":"Every response includes an origin.leaf hash traceable to the SEC-signed source."},"name":"keep-the-chain-alive","version":"0.5","feedback":"POST https://origin.rootz.global/api/feedback — optional, helps us improve."},"usage_meta":{"source":"core","current_tier":"free","requests_this_hour":176,"hourly_limit":500,"remaining":324,"agent_type":"claude","validation_required_for_commercial_use":true,"license":"https://github.com/skswave/origin-data/blob/main/LICENSE.md","pricing":"https://origin.rootz.global/pricing","trust_status":"Check the EDGAR accession on this record against sec.gov — that check does not run through us. Response signature and the exact rule: https://origin.rootz.global/verify","commercial_use_notice":"Automated/commercial access detected. Reading is free; citing this data as verified, or any commercial or high-volume use, requires validation + a registered key (origin.rootz.global/dashboard). Unvalidated commercial use is unlicensed.","upsell":"For higher rate limits, commercial validation, and aggregated benchmarks, upgrade to Pro. See origin.rootz.global/pricing","tier_recommendation":"pro"}}