{"schema_version":"secwatch.filing_event.v1","accession":"0001575872-23-000129","form_type":"8-K","ticker":"ESLA","cik":"0001844417","company_name":"Estrella Immunopharma, Inc.","filed_at":"2023-01-24T23:59:59+00:00","discovered_at":"2026-05-14T18:03:47.084675+00:00","generated_at":"2026-06-20T10:59:56.017574+00:00","sec_items":["1.01","2.03","3.02","8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"TradeUP Acquisition extends business combination deadline to Feb 19, 2023; issues notes for extension expenses","bullets":["Deposited $45,511 into trust to extend deadline from Jan 19 to Feb 19, 2023, funded by Estrella Biopharma.","Issued unsecured $45,511 promissory note to Estrella for extension deposit; no interest, due at merger close.","Issued $50,000 promissory note to sponsor TradeUP Acquisition Sponsor LLC for operating expenses, convertible at $10/share.","Company may extend monthly until July 19, 2023 by depositing additional $45,511 each month.","Notes convertible into common stock at $10 per share upon written notice two business days before merger close."],"urls":{"canonical":"https://secwatch.observer/filing/0001575872-23-000129","json":"https://secwatch.observer/filing/0001575872-23-000129.json","markdown":"https://secwatch.observer/filing/0001575872-23-000129.md","text":"https://secwatch.observer/filing/0001575872-23-000129.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1844417/000157587223000129/0001575872-23-000129-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1844417/000157587223000129/uptd-20230131.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-20T10:59:56.017574+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":"5e3dad5c43bc4bdca55179558abbcf71b8d8613b","claim":"Estrella Immunopharma, Inc. incurred loan of $50,000 with TradeUP Acquisition Sponsor LLC at bear no interest maturing payable in full upon the consummation of the Company's business combination.","evidence_excerpt":"On January 19, 2023, the Company issued an unsecured promissory note (the “Sponsor Note”) in the amount of $50,000 to TradeUP Acquisition Sponsor LLC, one of its sponsors (the “Sponsor”) to evidence a deposit that the Sponsor provided to the Company to pay its certain operating expenses.","evidence_source":"SEC 8-K Item 2.03/2.04","evidence_url":"https://www.sec.gov/Archives/edgar/data/1844417/000157587223000129/0001575872-23-000129-index.htm","confidence":0.9,"family_label":"Debt Financings","details":[{"label":"Instrument","value":"loan"},{"label":"Principal","value":"$50,000"},{"label":"Counterparty","value":"TradeUP Acquisition Sponsor LLC"},{"label":"Rate","value":"bear no interest"},{"label":"Maturity","value":"payable in full upon the consummation of the Company's business combination"},{"label":"Event","value":"incurrence"}],"fact_type":"debt_financing"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}