{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-21-244746","form_type":"8-K","ticker":"NXDR","cik":"0001846069","company_name":"Nextdoor Holdings, Inc.","filed_at":"2021-08-12T23:59:59+00:00","discovered_at":"2026-05-14T18:04:20.110591+00:00","generated_at":"2026-06-29T14:00:03.267883+00:00","sec_items":["4.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Khosla Ventures Acquisition dismisses Marcum, appoints BDO; material weakness disclosed","bullets":["Dismissed Marcum as auditor Aug 8, 2021; no accounting disagreements.","Appointed BDO as new independent registered public accounting firm effective same day.","Material weakness in internal controls over accounting for private placement shares and underwriting discounts.","Previous financial reports had going concern explanatory paragraph but no adverse opinion.","Marcum letter dated Aug 12, 2021 filed as Exhibit 16.1."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-21-244746","json":"https://secwatch.observer/filing/0001193125-21-244746.json","markdown":"https://secwatch.observer/filing/0001193125-21-244746.md","text":"https://secwatch.observer/filing/0001193125-21-244746.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1846069/000119312521244746/0001193125-21-244746-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1846069/000119312521244746/d196588d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-29T14:00:03.267883+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"}