{"schema_version":"secwatch.filing_event.v1","accession":"0001562088-21-000046","form_type":"8-K","ticker":"DUOL","cik":"0001562088","company_name":"Duolingo, Inc.","filed_at":"2021-11-22T23:59:59+00:00","discovered_at":"2026-05-14T18:04:13.043284+00:00","generated_at":"2026-06-28T06:06:52.249455+00:00","sec_items":["1.01","2.03"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Duolingo signs 13-year lease for 38,000 sq ft Pittsburgh office","bullets":["Lease effective Nov 16, 2021; base rent ~$148K/month escalating 2% annually.","First-year rent abatement of $1.4M reduces monthly rent to approximately $2,500.","Landlord provides improvement allowance of up to ~$2.3M for build-out.","Early termination option effective Apr 30, 2030 requires ~$2.9M fee and notice by Apr 30, 2029."],"urls":{"canonical":"https://secwatch.observer/filing/0001562088-21-000046","json":"https://secwatch.observer/filing/0001562088-21-000046.json","markdown":"https://secwatch.observer/filing/0001562088-21-000046.md","text":"https://secwatch.observer/filing/0001562088-21-000046.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1562088/000156208821000046/0001562088-21-000046-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1562088/000156208821000046/duol-20211116.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-28T06:06:52.249455+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}