{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-25-029361","form_type":"8-K","ticker":"SHPH","cik":"0001757499","company_name":"Shuttle Pharmaceuticals Holdings, Inc.","filed_at":"2025-12-29T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.349472+00:00","generated_at":"2026-05-16T12:07:14.154907+00:00","sec_items":["1.01","3.02","9.01"],"event_type":"m_and_a","sentiment":"negative","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Shuttle Pharma issues 19.99% stake (320,496 shares) in accelerated asset purchase payment","bullets":["First Amendment to Asset Purchase Agreement dated Dec 23, 2025 accelerates partial payment in stock.","Issued 320,496 shares of common stock at $1.76/share, representing 19.99% of outstanding shares.","Remaining First Installment Payment of $2,435,927.64 to be paid in cash only, per terms.","Amendment modifies definition of First Installment Payment and Purchase Price to reflect accelerated issuance.","Shares issued in unregistered transaction under Section 4(a)(2) and Rule 506(b)/Reg S."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-25-029361","json":"https://secwatch.observer/filing/0001493152-25-029361.json","markdown":"https://secwatch.observer/filing/0001493152-25-029361.md","text":"https://secwatch.observer/filing/0001493152-25-029361.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T12:07:14.154907+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":"f2ebf330b51afd67b32097d33e25bd5eef57ecf7","claim":"Shuttle Pharmaceuticals Holdings, Inc. amended First Amendment to Asset Purchase Agreement with 1563868 B.C. Ltd., 1542770 BC Ltd., ZhiTian (Andy) Zhang valued at 320,496 shares of Company Common Stock at $1.76 per share (effective 2025-12-23).","evidence_excerpt":"On December 23, 2025 (the “ Effective Date ”), Shuttle Pharmaceuticals Holdings, Inc. (the “ Company ”) entered into a First Amendment (the “ Amendment ”) to Asset Purchase Agreement (the “ Agreement ”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“ Purchaser ”), 1542770 BC Ltd., a Canadian limited corporation (“ Seller ”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“ Seller Guarantor ”), dated as of November 20, 2025.","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","confidence":0.95}],"comparable_filings":[{"accession":"0001104659-26-057182","ticker":"RMIX","company_name":"Suncrete, Inc.","filed_at":"2026-05-07T23:59:59+00:00","headline":"Suncrete acquires Nelson Bros. Ready Mix for $42.3M cash + stock; earnout up to $18M","event_type":"m_and_a","sec_items":["1.01","2.01","3.02","7.01","9.01"],"materiality_score":0.8,"calibrated_materiality_score":0.8,"match_reasons":["same fact type: material_agreement","same SEC item: 1.01, 3.02, 9.01","same event type: m_and_a","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-057182","json":"https://secwatch.observer/filing/0001104659-26-057182.json","markdown":"https://secwatch.observer/filing/0001104659-26-057182.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/2094433/000110465926057182/0001104659-26-057182-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2094433/000110465926057182/tm2613866d1_8k.htm"},"side_by_side_evidence":{"fact_type":"material_agreement","source_excerpt":"On December 23, 2025 (the “ Effective Date ”), Shuttle Pharmaceuticals Holdings, Inc. (the “ Company ”) entered into a First Amendment (the “ Amendment ”) to Asset Purchase Agreement (the “ Agreement ”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“ Purchaser ”), 1542770 BC Ltd., a Canadian limited corporation (“ Seller ”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“ Seller Guarantor ”), dated as of November 20, 2025.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","comparable_excerpt":"On May 6, 2026, Suncrete, Inc., a Delaware corporation (the “Company”), through its subsidiary Hope Concrete, LLC, a Texas limited liability company (“Purchaser”), entered into a Membership Interest Purchase Agreement (the “Purchase Agreement”) and related agreements with the owners of Nelson Bros. Ready Mix, LLC, a Texas limited liability company (the “Target”), to acquire 100% of the ownership interests of Target","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/2094433/000110465926057182/0001104659-26-057182-index.htm"}},{"accession":"0001829126-26-005923","ticker":"TACH","company_name":"Titan Acquisition Corp.","filed_at":"2026-06-01T21:15:47+00:00","headline":"Titan Acquisition Corp enters $800M deal to combine with OpenPayd","event_type":"m_and_a","sec_items":["1.01","7.01","9.01"],"materiality_score":0.75,"calibrated_materiality_score":0.75,"match_reasons":["same fact type: material_agreement","same SEC item: 1.01, 9.01","same event type: m_and_a","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001829126-26-005923","json":"https://secwatch.observer/filing/0001829126-26-005923.json","markdown":"https://secwatch.observer/filing/0001829126-26-005923.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/2009183/000182912626005923/0001829126-26-005923-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2009183/000182912626005923/titanacq_8k.htm"},"side_by_side_evidence":{"fact_type":"material_agreement","source_excerpt":"On December 23, 2025 (the “ Effective Date ”), Shuttle Pharmaceuticals Holdings, Inc. (the “ Company ”) entered into a First Amendment (the “ Amendment ”) to Asset Purchase Agreement (the “ Agreement ”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“ Purchaser ”), 1542770 BC Ltd., a Canadian limited corporation (“ Seller ”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“ Seller Guarantor ”), dated as of November 20, 2025.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","comparable_excerpt":"On June 1, 2026, Titan Acquisition Corp, a Cayman Islands exempted company (“Titan”), entered into a Business Combination Agreement (the “Business Combination Agreement”), by and among OpenPayd Global Holdings Limited, a Cayman Islands exempted company (“PubCo”), Titan Acquisition Sponsor Holdco LLC, a Delaware limited liability company (the “Sponsor”), solely in its capacity as the Purchaser Representative, OpenPayd Holdings Limited, a company limited by shares incorporated in England and Wales (“Company”), Ozan Özerk, solely in his capacity as the Company Shareholders Representative, and the shareholders of the Company party thereto (collectively, the “Parties”).","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/2009183/000182912626005923/0001829126-26-005923-index.htm"}},{"accession":"0001493152-26-026559","ticker":"WINV","company_name":"WinVest Acquisition Corp.","filed_at":"2026-06-01T15:20:55+00:00","headline":"WinVest amends business combination agreement to add ADS structure and share restructuring","event_type":"m_and_a","sec_items":["1.01","9.01"],"materiality_score":0.55,"calibrated_materiality_score":0.55,"match_reasons":["same fact type: material_agreement","same SEC item: 1.01, 9.01","same event type: m_and_a","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-26-026559","json":"https://secwatch.observer/filing/0001493152-26-026559.json","markdown":"https://secwatch.observer/filing/0001493152-26-026559.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1854463/000149315226026559/0001493152-26-026559-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1854463/000149315226026559/form8-k.htm"},"side_by_side_evidence":{"fact_type":"material_agreement","source_excerpt":"On December 23, 2025 (the “ Effective Date ”), Shuttle Pharmaceuticals Holdings, Inc. (the “ Company ”) entered into a First Amendment (the “ Amendment ”) to Asset Purchase Agreement (the “ Agreement ”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“ Purchaser ”), 1542770 BC Ltd., a Canadian limited corporation (“ Seller ”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“ Seller Guarantor ”), dated as of November 20, 2025.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","comparable_excerpt":"On May 26, 2026, SPAC, Pubco, the Company, SPAC Merger Sub, and Company Merger Sub entered into that certain Amended and Restated Business Combination Agreement (the “Restated Business Combination Agreement”), pursuant to which the Original Business Combination Agreement was amended and restated in its entirety","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1854463/000149315226026559/0001493152-26-026559-index.htm"}},{"accession":"0001171843-26-003196","ticker":"SSM","company_name":"Sono Group N.V.","filed_at":"2026-05-08T23:59:59+00:00","headline":"Sono Group exits solar: sells Sono Motors and €10.5M loan to management for €1 each","event_type":"m_and_a","sec_items":["2.05","1.01","2.01","8.01","9.01"],"materiality_score":0.75,"calibrated_materiality_score":0.75,"match_reasons":["same fact type: material_agreement","same SEC item: 1.01, 9.01","same event type: m_and_a","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001171843-26-003196","json":"https://secwatch.observer/filing/0001171843-26-003196.json","markdown":"https://secwatch.observer/filing/0001171843-26-003196.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1840416/000117184326003196/0001171843-26-003196-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1840416/000117184326003196/f8ka_050826.htm"},"side_by_side_evidence":{"fact_type":"material_agreement","source_excerpt":"On December 23, 2025 (the “ Effective Date ”), Shuttle Pharmaceuticals Holdings, Inc. (the “ Company ”) entered into a First Amendment (the “ Amendment ”) to Asset Purchase Agreement (the “ Agreement ”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“ Purchaser ”), 1542770 BC Ltd., a Canadian limited corporation (“ Seller ”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“ Seller Guarantor ”), dated as of November 20, 2025.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","comparable_excerpt":"On May 4, 2026 (the “Signing Date”), the Company entered into a Share Purchase and Transfer Agreement (the “SPA”) with (i) Vorratsla-160 M UG (haftungsbeschränkt), a German limited liability company whose sole shareholder is Denis Azhar, and (ii) Vorratsla-161 M UG (haftungsbeschränkt), a German limited liability company whose sole shareholder is Jan Schiermeister (together, the “Purchasers”), and Sono Motors GmbH, a German limited liability company (“Sono Motors”).","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1840416/000117184326003196/0001171843-26-003196-index.htm"}},{"accession":"0001193125-26-214743","ticker":"CTGO","company_name":"Contango Silver & Gold Inc.","filed_at":"2026-05-08T23:59:59+00:00","headline":"Contango Silver & Gold acquires Lucky Shot for $16.1M; reports high-grade gold intercepts","event_type":"m_and_a","sec_items":["1.01","1.02","2.03","7.01","9.01"],"materiality_score":0.75,"calibrated_materiality_score":0.75,"match_reasons":["same fact type: material_agreement","same SEC item: 1.01, 9.01","same event type: m_and_a","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-214743","json":"https://secwatch.observer/filing/0001193125-26-214743.json","markdown":"https://secwatch.observer/filing/0001193125-26-214743.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1502377/000119312526214743/0001193125-26-214743-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1502377/000119312526214743/ctgo-20260504.htm"},"side_by_side_evidence":{"fact_type":"material_agreement","source_excerpt":"On December 23, 2025 (the “ Effective Date ”), Shuttle Pharmaceuticals Holdings, Inc. (the “ Company ”) entered into a First Amendment (the “ Amendment ”) to Asset Purchase Agreement (the “ Agreement ”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“ Purchaser ”), 1542770 BC Ltd., a Canadian limited corporation (“ Seller ”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“ Seller Guarantor ”), dated as of November 20, 2025.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","comparable_excerpt":"(“Contango” or the “Company”), entered into a purchase and sale agreement (the “Purchase Agreement”) and executed a promissory note (the “Promissory Note”) with Alaska Hardrock Inc. (“AHI”) to acquire 100% ownership of the Company’s Lucky Shot project, located in the Willow Mining District about 75 miles north of Anchorage, Alaska (“Lucky Shot”).","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1502377/000119312526214743/0001193125-26-214743-index.htm"}},{"accession":"0001561032-26-000024","ticker":"NHP","company_name":"National Healthcare Properties, Inc.","filed_at":"2026-05-08T23:59:59+00:00","headline":"National Healthcare Properties to sell 86 outpatient medical facilities for ~$528M","event_type":"m_and_a","sec_items":["1.01","9.01"],"materiality_score":0.75,"calibrated_materiality_score":0.75,"match_reasons":["same fact type: material_agreement","same SEC item: 1.01, 9.01","same event type: m_and_a","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001561032-26-000024","json":"https://secwatch.observer/filing/0001561032-26-000024.json","markdown":"https://secwatch.observer/filing/0001561032-26-000024.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1561032/000156103226000024/0001561032-26-000024-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1561032/000156103226000024/hct-20260504.htm"},"side_by_side_evidence":{"fact_type":"material_agreement","source_excerpt":"On December 23, 2025 (the “ Effective Date ”), Shuttle Pharmaceuticals Holdings, Inc. (the “ Company ”) entered into a First Amendment (the “ Amendment ”) to Asset Purchase Agreement (the “ Agreement ”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“ Purchaser ”), 1542770 BC Ltd., a Canadian limited corporation (“ Seller ”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“ Seller Guarantor ”), dated as of November 20, 2025.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","comparable_excerpt":"On May 4, 2026, National Healthcare Properties, Inc. (the “Company”) and certain of its subsidiaries entered into a definitive purchase and sale agreement (the “PSA”) with an affiliated third party to sell a portfolio of 86 outpatient medical facilities for approximately $528 million","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1561032/000156103226000024/0001561032-26-000024-index.htm"}},{"accession":"0001193125-26-210231","ticker":"COLD","company_name":"AMERICOLD REALTY TRUST","filed_at":"2026-05-07T23:59:59+00:00","headline":"Americold forms $1.3B cold storage JV with EQT; receives $1.1B debt repayment proceeds","event_type":"m_and_a","sec_items":["1.01","7.01","9.01"],"materiality_score":0.8,"calibrated_materiality_score":0.8,"match_reasons":["same fact type: material_agreement","same SEC item: 1.01, 9.01","same event type: m_and_a","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-210231","json":"https://secwatch.observer/filing/0001193125-26-210231.json","markdown":"https://secwatch.observer/filing/0001193125-26-210231.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1455863/000119312526210231/0001193125-26-210231-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1455863/000119312526210231/d95141d8k.htm"},"side_by_side_evidence":{"fact_type":"material_agreement","source_excerpt":"On December 23, 2025 (the “ Effective Date ”), Shuttle Pharmaceuticals Holdings, Inc. (the “ Company ”) entered into a First Amendment (the “ Amendment ”) to Asset Purchase Agreement (the “ Agreement ”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“ Purchaser ”), 1542770 BC Ltd., a Canadian limited corporation (“ Seller ”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“ Seller Guarantor ”), dated as of November 20, 2025.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","comparable_excerpt":"On May 7, 2026, Americold Realty Operating Partnership, LP, a Delaware limited partnership, MHG Gateway Properties, LLC, a New Jersey limited liability company, ART Mortgage Borrower Propco 2010 - 5 LLC, a Delaware limited liability company, Americold New TRS Sub 1, LLC, a Delaware limited liability company, Americold Real Estate, L.P., a Delaware limited partnership, ART Mortgage Borrower Propco 2010 - 4 LLC, a Delaware limited liability company, New Hall’s Warehouse LLC, a New Jersey limited liability company and Americold Russellville, LLC, an Arkansas limited liability company, each a subsidiary of Americold Realty Trust, Inc. (the “ Company ”) and Snowfall Topco LP, an affiliate of EQT entered into a contribution agreement (the “ Contribution Agreement ” and the transactions described therein, the “ JV Transaction ”), which was unanimously approved by the Company’s Board of Directors (the “Board”), upon the unanimous recommendation of the Finance Committee of the Board, to create","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1455863/000119312526210231/0001193125-26-210231-index.htm"}},{"accession":"0001193125-26-211817","ticker":"GIG","company_name":"GigCapital7 Corp.","filed_at":"2026-05-07T23:59:59+00:00","headline":"GigCapital7 enters additional non-redemption and forward purchase agreements for Hadron Energy merger","event_type":"m_and_a","sec_items":["1.01","8.01","9.01"],"materiality_score":0.7,"calibrated_materiality_score":0.7,"match_reasons":["same fact type: material_agreement","same SEC item: 1.01, 9.01","same event type: m_and_a","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-211817","json":"https://secwatch.observer/filing/0001193125-26-211817.json","markdown":"https://secwatch.observer/filing/0001193125-26-211817.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/2023730/000119312526211817/0001193125-26-211817-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2023730/000119312526211817/d152235d8k.htm"},"side_by_side_evidence":{"fact_type":"material_agreement","source_excerpt":"On December 23, 2025 (the “ Effective Date ”), Shuttle Pharmaceuticals Holdings, Inc. (the “ Company ”) entered into a First Amendment (the “ Amendment ”) to Asset Purchase Agreement (the “ Agreement ”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“ Purchaser ”), 1542770 BC Ltd., a Canadian limited corporation (“ Seller ”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“ Seller Guarantor ”), dated as of November 20, 2025.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1757499/000149315225029361/0001493152-25-029361-index.htm","comparable_excerpt":"On May 6, 2026, GigCapital7 and Target entered into a forward stock purchase agreement (the “ Forward Purchase Agreement ”) with certain investors (together, the “ Seller ”) for an OTC Equity Prepaid Forward Transaction.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/2023730/000119312526211817/0001193125-26-211817-index.htm"}}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}