{"filing":{"accession_number":"0001437749-26-028920","cik":"0000799167","ticker":"MRTN","company_name":"MARTEN TRANSPORT LTD","form":"8-K","filing_date":"2026-08-25","report_date":"2026-08-19","primary_document":"mrtn20260825_8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/799167/000143774926028920/mrtn20260825_8k.htm"},"events":[{"id":29491,"run_id":27006,"accession_number":"0001437749-26-028920","anchor_item_number":"1.01","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.82,"summary":"Marten Transport entered into a Second Amendment to its Credit Agreement on August 19, 2026, which extends the credit facility term to August 19, 2031, increases the letter-of-credit sublimit to $50 million, and updates SOFR margin terms. This material modification extends the company's financing capacity and materially modifies its direct financial obligations.","company_name":"MARTEN TRANSPORT LTD","ticker":"MRTN","filing_date":"2026-08-25","form":"8-K","submitted_at":null,"items":[{"id":31789,"accession_number":"0001437749-26-028920","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.85,"reasoning":"Marten entered into a Second Amendment to its Credit Agreement on August 19, 2026, which materially modifies the company's direct financial obligations. The amendment extends the credit facility term to August 19, 2031, increases the letter-of-credit sublimit to $50 million, and updates SOFR margin terms. While technically an amendment rather than a new issuance, this represents a material modification to an existing credit facility that extends Marten's financing capacity and obligations, warranting classification as a debt-related event material to investors assessing the company's capital structure and liquidity.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-25T20:20:41.092708+00:00","company_name":"","ticker":null,"filing_date":""},{"id":31790,"accession_number":"0001437749-26-028920","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":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.75,"reasoning":"Item 2.03 discloses creation of a direct financial obligation, with the substance incorporated by reference from Item 1.01 (Entry into a Material Definitive Agreement). While the specific details are not provided in this excerpt, the Item 2.03 heading and cross-reference to Item 1.01 indicate a debt issuance or credit facility arrangement. The materiality threshold and executive signature by the CFO support classification as a material debt event.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-25T20:20:41.092708+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":31789,"accession_number":"0001437749-26-028920","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.85,"reasoning":"Marten entered into a Second Amendment to its Credit Agreement on August 19, 2026, which materially modifies the company's direct financial obligations. The amendment extends the credit facility term to August 19, 2031, increases the letter-of-credit sublimit to $50 million, and updates SOFR margin terms. While technically an amendment rather than a new issuance, this represents a material modification to an existing credit facility that extends Marten's financing capacity and obligations, warranting classification as a debt-related event material to investors assessing the company's capital structure and liquidity.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-25T20:20:41.092708+00:00","company_name":"MARTEN TRANSPORT LTD","ticker":"MRTN","filing_date":"2026-08-25"},{"id":31790,"accession_number":"0001437749-26-028920","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":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.75,"reasoning":"Item 2.03 discloses creation of a direct financial obligation, with the substance incorporated by reference from Item 1.01 (Entry into a Material Definitive Agreement). While the specific details are not provided in this excerpt, the Item 2.03 heading and cross-reference to Item 1.01 indicate a debt issuance or credit facility arrangement. The materiality threshold and executive signature by the CFO support classification as a material debt event.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-25T20:20:41.092708+00:00","company_name":"MARTEN TRANSPORT LTD","ticker":"MRTN","filing_date":"2026-08-25"}]}