{"filing":{"accession_number":"0001628280-26-047796","cik":"0001805077","ticker":"EOSE","company_name":"Eos Energy Enterprises, Inc.","form":"8-K","filing_date":"2026-07-09","report_date":null,"primary_document":"eose-20260708.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1805077/000162828026047796/eose-20260708.htm"},"events":[{"id":16862,"run_id":15087,"accession_number":"0001628280-26-047796","anchor_item_number":"5.02","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.75,"summary":"Haiyan Song was appointed as a new Class III director effective July 9, 2026, bringing cybersecurity and software expertise to strengthen the Board's capabilities. The appointment was accompanied by related board transitions including Greg Nixon's resignation as preferred stock director and Nathaniel Fick's transition from Class III to preferred stock director.","company_name":"Eos Energy Enterprises, Inc.","ticker":"EOSE","filing_date":"2026-07-09","form":"8-K","submitted_at":null,"items":[{"id":15088,"accession_number":"0001628280-26-047796","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.75,"reasoning":"The Item 5.02 disclosure centers on multiple board transitions: Greg Nixon's resignation as preferred stock director, Nathaniel Fick's transition from Class III to preferred stock director, and Haiyan Song's appointment as a new Class III director effective July 9, 2026. While Nixon's departure is mentioned, the filing's primary focus—evidenced by the detailed biographical information, compensation details, and press release emphasis—is on Song's appointment as a cybersecurity and software leader to strengthen the Board's expertise. The appointment of a new director with significant industry credentials is the material event driving the disclosure.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-10T10:43:47.848695+00:00","company_name":"","ticker":null,"filing_date":""},{"id":15089,"accession_number":"0001628280-26-047796","item_number":"8.01","item_title":"Other Events.","event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.72,"reasoning":"The Item 8.01 disclosure announces multiple governance events: appointment of Haiyan Song to the Board of Directors, departure of Greg Nixon from the Board, transition of Nate Fick's board seat, and a Chief Legal Officer transition (Michael Silberman departing, Marie Batz Martin appointed effective July 13, 2026). While the filing references Item 5.02 for these matters, the Item 8.01 itself is a summary press release. The events involve both executive appointments and departures, but the central governance restructuring—particularly the CLO transition and board composition changes—is most appropriately classified as governance_other rather than splitting into separate appointment/departure categories, as the filing presents them as an integrated leadership transition.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-10T10:43:47.848695+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":15088,"accession_number":"0001628280-26-047796","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.75,"reasoning":"The Item 5.02 disclosure centers on multiple board transitions: Greg Nixon's resignation as preferred stock director, Nathaniel Fick's transition from Class III to preferred stock director, and Haiyan Song's appointment as a new Class III director effective July 9, 2026. While Nixon's departure is mentioned, the filing's primary focus—evidenced by the detailed biographical information, compensation details, and press release emphasis—is on Song's appointment as a cybersecurity and software leader to strengthen the Board's expertise. The appointment of a new director with significant industry credentials is the material event driving the disclosure.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-10T10:43:47.848695+00:00","company_name":"Eos Energy Enterprises, Inc.","ticker":"EOSE","filing_date":"2026-07-09"},{"id":15089,"accession_number":"0001628280-26-047796","item_number":"8.01","item_title":"Other Events.","event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.72,"reasoning":"The Item 8.01 disclosure announces multiple governance events: appointment of Haiyan Song to the Board of Directors, departure of Greg Nixon from the Board, transition of Nate Fick's board seat, and a Chief Legal Officer transition (Michael Silberman departing, Marie Batz Martin appointed effective July 13, 2026). While the filing references Item 5.02 for these matters, the Item 8.01 itself is a summary press release. The events involve both executive appointments and departures, but the central governance restructuring—particularly the CLO transition and board composition changes—is most appropriately classified as governance_other rather than splitting into separate appointment/departure categories, as the filing presents them as an integrated leadership transition.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-10T10:43:47.848695+00:00","company_name":"Eos Energy Enterprises, Inc.","ticker":"EOSE","filing_date":"2026-07-09"}]}