UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 30, 2017 (June 30, 2017)

ARCBEST CORPORATION

(Exact name of registrant as specified in its charter)

3801 Old Greenwood Road

Fort Smith, Arkansas 72903

(479) 785-6000

(Address, including zip code, and telephone number, including area code, of
the registrant’s principal executive offices)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions.

o                 Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o                 Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o                 Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o                 Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company                                        o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  o

ITEM 7.01 — REGULATION FD DISCLOSURE

On June 30, 2017, ArcBest Corporation (Nasdaq: ARCB) issued a press release announcing that effective August 1, 2017, it will apply space-based minimum charges for less-than-truckload shipments.

A copy of the press release and a Question and Answer document that provides additional information regarding the space-based minimum charges are furnished as Exhibits 99.1 and 99.2, respectively, to this Current Report on Form 8-K and are incorporated herein by reference.

ITEM 9.01 — FINANCIAL STATEMENTS AND EXHIBITS.

(d)           Exhibits.

99.1                        Press release of ArcBest Corporation dated June 30, 2017.

99.2                        Question and Answer document dated June 30, 2017.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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