{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-22-304803","form_type":"8-K","ticker":"MCRB","cik":"0001609809","company_name":"Seres Therapeutics, Inc.","filed_at":"2022-12-14T23:59:59+00:00","discovered_at":"2026-05-14T18:03:51.394757+00:00","generated_at":"2026-06-21T04:47:27.676838+00:00","sec_items":["1.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Seres amends Cambridge lease: surrenders 14,760 sq ft, extends 68,636 sq ft to Jan 2030","bullets":["Surrenders 14,760 rentable sq ft of office/lab space effective Nov 12, 2023.","Extends lease on remaining 68,636 sq ft to Jan 13, 2030; initial rent $122/sq ft/yr with 3% annual escalations.","Receives 2-month free rent at start of extension and $1.72M tenant improvement allowance ($25/sq ft).","Rentable area after surrender: 68,636 sq ft; tenant's pro rata share in building becomes 36.39%."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-22-304803","json":"https://secwatch.observer/filing/0001193125-22-304803.json","markdown":"https://secwatch.observer/filing/0001193125-22-304803.md","text":"https://secwatch.observer/filing/0001193125-22-304803.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1609809/000119312522304803/0001193125-22-304803-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1609809/000119312522304803/d399120d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-21T04:47:27.676838+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":[{"claim_id":"9cc9bc31b1b97ba3cc5a6f293ea9042ebf6aa8d7","claim":"Seres Therapeutics, Inc. amended First Amendment to Lease with BMR-Sidney Research Campus LLC (effective 2022-12-09).","evidence_excerpt":"On December 9, 2022, Seres Therapeutics, Inc. (the “Company”) entered into the First Amendment to Lease (the “First Amendment”) with BMR-Sidney Research Campus LLC (f/k/a BMR 200-Sidney Street LLC), a Delaware limited liability company (the “Landlord”), which amends the Lease Agreement, dated November 11, 2015","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1609809/000119312522304803/0001193125-22-304803-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Agreement","value":"lease"},{"label":"Counterparty","value":"BMR-Sidney Research Campus LLC"},{"label":"Effective","value":"2022-12-09"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}