--- schema_version: "secwatch.filing_event.v1" accession: "0001193125-26-249151" form_type: "8-K" ticker: "GIG" cik: "0002023730" company_name: "GigCapital7 Corp." filed_at: "2026-05-29T23:45:19+00:00" generated_at: "2026-06-01T10:11:09.253606+00:00" event_type: "m_and_a" sentiment: "neutral" materiality_score: 0.75 calibrated_materiality_score: 0.75 confidence: "high" source: SEC EDGAR --- # Hadron Energy closes SPAC merger with GigCapital7; 84% of public shares redeemed ## Summary - Business combination closed May 22, 2026; common stock trades as HDRN, warrants as HDRNW on Nasdaq. - 84% of public shares (16.8M) redeemed at ~$10.71 each, aggregating $180.3M; trust balance fell to ~$33.9M. - Post-combination: 71.5M common shares outstanding; warrants: 20M public ($11.50), 3.7M private ($11.50), 5M ($12.00). - Directors and executive officers beneficially own ~77.2% of outstanding common stock. - Independent auditor changed: BPM replaces Withum as accounting firm for Hadron Energy Operating Company. ## SEC filing metadata - accession: 0001193125-26-249151 - form_type: 8-K - ticker: GIG - cik: 0002023730 - company_name: GigCapital7 Corp. - filed_at: 2026-05-29T23:45:19+00:00 - event_type: m_and_a - sentiment: neutral - materiality_score: 0.75 - calibrated_materiality_score: 0.75 - confidence: high - sec_items: 2.01, 3.02, 5.02, 9.01, 3.03, 4.01, 5.01, 5.03, 5.06, 8.01 - EDGAR index: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/d26249d8k.htm ## Machine-readable alternates - HTML: https://secwatch.observer/filing/0001193125-26-249151 - JSON: https://secwatch.observer/filing/0001193125-26-249151.json - Plain text: https://secwatch.observer/filing/0001193125-26-249151.txt ## Source-grounded claims - claim_id: 0c398d05c4 claim: Robert J. Lewis was elected as Independent Director at GigCapital7 Corp.. evidence_excerpt: and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 24fd441901 claim: Karen Rogge resigned as Director at GigCapital7 Corp.. evidence_excerpt: Effective upon the Closing on May 22, 2026, Dr. Avi Katz and Christine M. Marshall resigned as executive officers of GigCapital7, and each of Karen Rogge and Professor Darius Moshfeghi resigned as directors of GigCapital7. evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 31c8707b3a claim: Rahul Shukla was named as Chief Financial Officer at GigCapital7 Corp.. evidence_excerpt: with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 37b183e715 claim: Dr. Andrew M. Ward was named as Chief Technology Officer at GigCapital7 Corp.. evidence_excerpt: with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 3ed6c681fc claim: Raanan I. Horowitz was elected as Independent Director at GigCapital7 Corp.. evidence_excerpt: and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 56ee0ba219 claim: Dr. Raluca Dinu was elected as Independent Director at GigCapital7 Corp.. evidence_excerpt: and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 5ccf9dde3a claim: Dr. Avi Katz was elected as Independent Director at GigCapital7 Corp.. evidence_excerpt: and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 6115658919 claim: Ralph L. Hunter was elected as Independent Director at GigCapital7 Corp.. evidence_excerpt: and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 68b6b7a821 claim: Bryan L. Timm was elected as Independent Director at GigCapital7 Corp.. evidence_excerpt: and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 6d8067c41f claim: Dr. Avi Katz was elected as Executive Chairman at GigCapital7 Corp.. evidence_excerpt: and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 78333cab19 claim: Ross T. Ridenoure was named as Chief Nuclear Officer at GigCapital7 Corp.. evidence_excerpt: with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 7a2e500650 claim: Ambassador Adrian Zuckerman was elected as Independent Director at GigCapital7 Corp.. evidence_excerpt: and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: 80809bfc62 claim: Professor Darius Moshfeghi resigned as Director at GigCapital7 Corp.. evidence_excerpt: Effective upon the Closing on May 22, 2026, Dr. Avi Katz and Christine M. Marshall resigned as executive officers of GigCapital7, and each of Karen Rogge and Professor Darius Moshfeghi resigned as directors of GigCapital7. evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: a536bb307b claim: Samuel Gibson was elected as Director at GigCapital7 Corp.. evidence_excerpt: and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: b6a1da2249 claim: Samuel Gibson was named as Chief Executive Officer at GigCapital7 Corp.. evidence_excerpt: with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: ebdec91318 claim: Christine M. Marshall resigned as executive officer at GigCapital7 Corp.. evidence_excerpt: Effective upon the Closing on May 22, 2026, Dr. Avi Katz and Christine M. Marshall resigned as executive officers of GigCapital7, and each of Karen Rogge and Professor Darius Moshfeghi resigned as directors of GigCapital7. evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: f3172b1ca7 claim: Dr. Avi Katz resigned as executive officer at GigCapital7 Corp.. evidence_excerpt: Effective upon the Closing on May 22, 2026, Dr. Avi Katz and Christine M. Marshall resigned as executive officers of GigCapital7, and each of Karen Rogge and Professor Darius Moshfeghi resigned as directors of GigCapital7. evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm - claim_id: fdae667ca9 claim: Ken Canavan was named as Chief Operating Officer at GigCapital7 Corp.. evidence_excerpt: with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026 evidence_url: https://www.sec.gov/Archives/edgar/data/2023730/000119312526249151/0001193125-26-249151-index.htm This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.