UNITED STATES SECURITIES AND EXCHANGE COMMISSION or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number 001-38736 WestRock Company (Exact Name of Registrant as Specified in Its Charter) Delaware 37-1880617 (State or Other Jurisdiction of Incorporation or Organization) (Address of Principal Executive Offices) (Zip Code) Registrant's Telephone Number, Including Area Code: (770) 448-2193 Washington, D.C. 20549 Form ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended December 31, 2019 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number 001-38736 WestRock Company (Exact Name of Registrant as Specified in Its Charter) Delaware 37-1880617 (State or Other Jurisdiction of Incorp ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-38736 WESTROCK COMPANY (Exact Name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of Incorporation or Organ ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2019 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number 001-38736 WestRock Company (Exact Name of Registrant as Specified in Its Charter) Delaware 37-1880617 (State or Other Jurisdiction of Incorporat ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended March 31, 2019 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number 001-38736 WestRock Company (Exact Name of Registrant as Specified in Its Charter) Delaware 37-1880617 (State or Other Jurisdiction of Incorpora ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended December 31, 2018 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number 001-38736 WestRock Company (Exact Name of Registrant as Specified in Its Charter) Delaware 37-1880617 (State or Other Jurisdiction of Incorp ...