ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION	6 Months Ended
Jun. 30, 2026
ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION
ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION	NOTE A – ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION Organization and Description of Business ArcBest Corporation^™ (the “Company”) is a multibillion-dollar integrated logistics company that leverages technology and a full suite of shipping and logistics solutions across multiple modes of transportation to meet customers’ supply chain needs. The Company, which started over a century ago as a local freight hauler, serves as a single end-to-end logistics partner with global reach. The Company’s operations are conducted through its two reportable operating segments: Asset‑Based, which consists of ABF Freight System, Inc. and certain other subsidiaries (“ABF Freight”) and Asset-Light, the Company’s logistics operations. References to the Company in this Quarterly Report on Form 10-Q are primarily to the Company and its subsidiaries on a consolidated basis. The Asset-Based segment represented approximately 64% of the Company’s total revenues before other revenues and intercompany eliminations for the six months ended June 30, 2026. As of June 2026, approximately 81% of the Asset-Based segment’s employees were covered under the ABF National Master Freight Agreement (the “2023 ABF NMFA”), a collective bargaining agreement with the International Brotherhood of Teamsters (the “IBT”), which will remain in effect through June 30, 2028. Restructuring Plan In July 2026, the Company announced a simplified brand structure and a series of organizational changes. Effective August 1, 2026, the MoLo^® and Panther^® brands within the Asset-Light segment and certain other subsidiaries will operate under the ArcBest^® brand. The series of organizational changes included the discontinuation of Vaux Freight Movement System, as the Company focuses Vaux operations on the Vaux Smart Autonomy product offering. These actions include a reduction of approximately 2% of total positions through workforce reductions and the elimination of certain open positions, as well as the proposed closure of ten ABF Freight service centers, which are located in smaller markets and represent approximately 1% of the Company's network doors. The consolidations constitute a change of operations under the 2023 ABF NMFA and are subject to approval by the joint union-management Change of Operations Committee pursuant to the terms of the 2023 ABF NMFA. Restructuring charges, consisting primarily of severance and related employee costs associated with workforce reductions, are expected to total between $6.0 million and $7.0 million, including $2.2 million recorded during the second quarter of 2026. The Company also recorded $50.8 million of asset impairment charges related to the discontinuance of Vaux Freight Movement System and $25.7 million in asset impairment charges to write off the remaining carrying value of the indefinite-lived Panther trade name. See Notes B and C for additional information regarding these impairment charges. The impact of these actions on operating expenses is further discussed in Note I. The Company expects substantially all restructuring activities associated with these actions to be completed, and substantially all related cash expenditures to be paid, during 2026. Financial Statement Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and applicable rules and regulations of the Securities and Exchange Commission (the “SEC”) pertaining to interim financial information. Accordingly, these interim financial statements do not include all information or footnote disclosures required by accounting principles generally accepted in the United States for complete financial statements and, therefore, should be read in conjunction with the audited financial statements and accompanying notes included in the Company’s 2025 Annual Report on Form 10-K and other current filings with the SEC. In the opinion of management, all adjustments (which are of a normal and recurring nature) considered necessary for a fair presentation have been included. The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual amounts may differ from those estimates. Accounting Pronouncements Not Yet Adopted Accounting Standards Codification (“ASC”) Topic 220, Disaggregation of Income Statement Expenses, was amended in November 2024 through the issuance of Accounting Standards Update (“ASU”) No. 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (“ASU 2024-03”), which requires additional disclosure of specified information about certain costs and expenses. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, while early adoption is permitted. The Company is currently assessing the amendment’s impact on the Company’s disclosures. ASC Topic 350, Intangibles - Goodwill and Other, was amended in September 2025 through the issuance of ASU No. 2025-06, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software (“ASU 2025-06”), which eliminates accounting consideration of software project development stages and clarifies the threshold applied to begin capitalizing costs. ASU 2025-06 is effective for fiscal years beginning after December 15, 2027, while early adoption is permitted. The Company is currently assessing the amendment's impact on the Company's internal-use software capitalization policies, projects, and disclosures. ASC Topic 270, Interim Reporting, was amended in December 2025 through the issuance of ASU No. 2025-11, Interim Reporting – Narrow-Scope (“ASU 2025-11”), which clarifies interim disclosure requirements. ASU 2025-11 is effective for fiscal years beginning after December 15, 2027, while early adoption is permitted. The ASU does not change the fundamental nature of interim reporting or expand or reduce existing interim disclosure requirements.

ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION

6 Months Ended

Jun. 30, 2026

ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION

ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION

NOTE A – ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION

Organization and Description of Business

ArcBest Corporation^™ (the “Company”) is a multibillion-dollar integrated logistics company that leverages technology and a full suite of shipping and logistics solutions across multiple modes of transportation to meet customers’ supply chain needs. The Company, which started over a century ago as a local freight hauler, serves as a single end-to-end logistics partner with global reach. The Company’s operations are conducted through its two reportable operating segments: Asset‑Based, which consists of ABF Freight System, Inc. and certain other subsidiaries (“ABF Freight”) and Asset-Light, the Company’s logistics operations. References to the Company in this Quarterly Report on Form 10-Q are primarily to the Company and its subsidiaries on a consolidated basis.

The Asset-Based segment represented approximately 64% of the Company’s total revenues before other revenues and intercompany eliminations for the six months ended June 30, 2026. As of June 2026, approximately 81% of the Asset-Based segment’s employees were covered under the ABF National Master Freight Agreement (the “2023 ABF NMFA”), a collective bargaining agreement with the International Brotherhood of Teamsters (the “IBT”), which will remain in effect through June 30, 2028.

Restructuring Plan

In July 2026, the Company announced a simplified brand structure and a series of organizational changes. Effective August 1, 2026, the MoLo^® and Panther^® brands within the Asset-Light segment and certain other subsidiaries will operate under the ArcBest^® brand. The series of organizational changes included the discontinuation of Vaux Freight Movement System, as the Company focuses Vaux operations on the Vaux Smart Autonomy product offering. These actions include a reduction of approximately 2% of total positions through workforce reductions and the elimination of certain open positions, as well as the proposed closure of ten ABF Freight service centers, which are located in smaller markets and represent approximately 1% of the Company's network doors. The consolidations constitute a change of operations under the 2023 ABF NMFA and are subject to approval by the joint union-management Change of Operations Committee pursuant to the terms of the 2023 ABF NMFA.

Restructuring charges, consisting primarily of severance and related employee costs associated with workforce reductions, are expected to total between $6.0 million and $7.0 million, including $2.2 million recorded during the second quarter of 2026. The Company also recorded $50.8 million of asset impairment charges related to the discontinuance of Vaux Freight Movement System and $25.7 million in asset impairment charges to write off the remaining carrying value of the indefinite-lived Panther trade name. See Notes B and C for additional information regarding these impairment charges. The impact of these actions on operating expenses is further discussed in Note I. The Company expects substantially all restructuring activities associated with these actions to be completed, and substantially all related cash expenditures to be paid, during 2026.

Financial Statement Presentation

The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and applicable rules and regulations of the Securities and Exchange Commission (the “SEC”) pertaining to interim financial information. Accordingly, these interim financial statements do not include all information or footnote disclosures required by accounting principles generally accepted in the United States for complete financial statements and, therefore, should be read in conjunction with the audited financial statements and accompanying notes included in the Company’s 2025 Annual Report on Form 10-K and other current filings with the SEC. In the opinion of management, all adjustments (which are of a normal and recurring nature) considered necessary for a fair presentation have been included.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual amounts may differ from those estimates.

Accounting Pronouncements Not Yet Adopted

Accounting Standards Codification (“ASC”) Topic 220, Disaggregation of Income Statement Expenses, was amended in November 2024 through the issuance of Accounting Standards Update (“ASU”) No. 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (“ASU 2024-03”), which requires additional disclosure of specified information about certain costs and expenses. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, while early adoption is permitted. The Company is currently assessing the amendment’s impact on the Company’s disclosures.

ASC Topic 350, Intangibles - Goodwill and Other, was amended in September 2025 through the issuance of ASU No. 2025-06, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software (“ASU 2025-06”), which eliminates accounting consideration of software project development stages and clarifies the threshold applied to begin capitalizing costs. ASU 2025-06 is effective for fiscal years beginning after December 15, 2027, while early adoption is permitted. The Company is currently assessing the amendment's impact on the Company's internal-use software capitalization policies, projects, and disclosures.

ASC Topic 270, Interim Reporting, was amended in December 2025 through the issuance of ASU No. 2025-11, Interim Reporting – Narrow-Scope (“ASU 2025-11”), which clarifies interim disclosure requirements. ASU 2025-11 is effective for fiscal years beginning after December 15, 2027, while early adoption is permitted. The ASU does not change the fundamental nature of interim reporting or expand or reduce existing interim disclosure requirements.