{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-418405","form_type":"8-K","ticker":"GIW","cik":"0002080019","company_name":"GigCapital8 Corp.","filed_at":"2026-10-09T10:05:31+00:00","discovered_at":"2026-10-09T10:10:00.328429+00:00","generated_at":"2026-10-12T15:20:45.307015+00:00","sec_items":["8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"GigCapital8, Quantisimo sign definitive merger; WISeQey/SEALSQ quantum platform valued ~$666M, to list on Nasdaq as QSMO","bullets":["Definitive merger signed Oct 8, 2026: WISeQey and SEALSQ to receive 66,610,000 PubCo shares, implying ~$666.1M pro forma equity value at $10.00/share and majority ownership of PubCo.","Closing requires at least $15M cash: GigCapital8 trust proceeds after redemptions plus any PIPE, with matching cash from SEALSQ receiving additional PubCo shares at $10.00 each.","Expected to close Q1 2027; PubCo Quantisimo Holding Corp. to list on Nasdaq Capital Market as 'QSMO'. GigCapital8 Class A shares exchange 1:1; five rights convert to one PubCo share.","WISeQey, SEALSQ and GigCapital8's sponsor signed six-month lock-ups; sponsor to vote for the deal and not redeem. GigCapital8's board unanimously recommends the transaction.","Quantisimo combines Miraex SA, SEALCOIN AG, WeCan Group SA and WISeSat.Space (Nasdaq: SAIQ); CEO Carlos Moreira cites 'Root to Qubit' sovereign quantum platform."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-418405","json":"https://secwatch.observer/filing/0001193125-26-418405.json","markdown":"https://secwatch.observer/filing/0001193125-26-418405.md","text":"https://secwatch.observer/filing/0001193125-26-418405.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2080019/000119312526418405/0001193125-26-418405-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2080019/000119312526418405/giwwu-20261008.htm"},"model":{"generated_by":"deepseek-v4.1-flash:cloud@v2","generated_at":"2026-10-12T15:20:45.307015+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"}