{"filing":{"accession_number":"0001437749-26-021135","cik":"0000799167","ticker":"MRTN","company_name":"MARTEN TRANSPORT LTD","form":"8-K","filing_date":"2026-06-18","report_date":null,"primary_document":"mrtn20260617_8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/799167/000143774926021135/mrtn20260617_8k.htm"},"events":[{"id":11790,"run_id":10369,"accession_number":"0001437749-26-021135","anchor_item_number":"1.01","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.75,"summary":"Marten Transport entered into a First Amendment to its Credit Agreement on June 12, 2026, increasing the letter of credit sublimit from $30 million to $35 million and raising the maximum aggregate principal amount from $100 million to $105 million, materially expanding the company's borrowing capacity and financial flexibility.","company_name":"MARTEN TRANSPORT LTD","ticker":"MRTN","filing_date":"2026-06-18","form":"8-K","submitted_at":null,"items":[{"id":8466,"accession_number":"0001437749-26-021135","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"Marten entered into a First Amendment to its Credit Agreement on June 12, 2026, increasing the letter of credit sublimit from $30 million to $35 million and raising the maximum aggregate principal amount from $100 million to $105 million. While this is a credit facility amendment rather than a traditional M\u0026A transaction, Item 1.01 (Entry into a Material Definitive Agreement) is the disclosed Item, and the amendment materially expands Marten's borrowing capacity and financial flexibility. This is material to investors assessing the company's liquidity and financial position.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-18T20:04:21.414408+00:00","company_name":"","ticker":null,"filing_date":""},{"id":8467,"accession_number":"0001437749-26-021135","item_number":"2.03","item_title":"Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.45,"reasoning":"Item 2.03 discloses creation of a direct financial obligation by reference to Item 1.01 (Entry into a Material Definitive Agreement), but the actual agreement details are not provided in this excerpt. Without visibility into the underlying agreement's nature, amount, or terms, the specific event type cannot be reliably determined. The disclosure is material as it involves a new financial obligation, but the event classification remains ambiguous pending the full Item 1.01 content.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-18T20:04:21.414408+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":8466,"accession_number":"0001437749-26-021135","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"Marten entered into a First Amendment to its Credit Agreement on June 12, 2026, increasing the letter of credit sublimit from $30 million to $35 million and raising the maximum aggregate principal amount from $100 million to $105 million. While this is a credit facility amendment rather than a traditional M\u0026A transaction, Item 1.01 (Entry into a Material Definitive Agreement) is the disclosed Item, and the amendment materially expands Marten's borrowing capacity and financial flexibility. This is material to investors assessing the company's liquidity and financial position.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-18T20:04:21.414408+00:00","company_name":"MARTEN TRANSPORT LTD","ticker":"MRTN","filing_date":"2026-06-18"},{"id":8467,"accession_number":"0001437749-26-021135","item_number":"2.03","item_title":"Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.45,"reasoning":"Item 2.03 discloses creation of a direct financial obligation by reference to Item 1.01 (Entry into a Material Definitive Agreement), but the actual agreement details are not provided in this excerpt. Without visibility into the underlying agreement's nature, amount, or terms, the specific event type cannot be reliably determined. The disclosure is material as it involves a new financial obligation, but the event classification remains ambiguous pending the full Item 1.01 content.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-18T20:04:21.414408+00:00","company_name":"MARTEN TRANSPORT LTD","ticker":"MRTN","filing_date":"2026-06-18"}]}