RockTenn and MWV Announce Anticipated Election Deadline of June 23, 2015

Rock-Tenn Company (RockTenn) (NYSE: RKT) and MeadWestvaco Corporation (MWV) (NYSE: MWV) today announced an anticipated election deadline of 5 p.m., Eastern Time, on June 23, 2015 (the “Election Deadline”), for RockTenn shareholders to elect the form of consideration they wish to receive in the combination of the two packaging companies into WestRock Company (WestRock). The Election Deadline may be extended if the RockTenn meeting of shareholders is postponed or adjourned, in which case RockTenn and MWV will issue a press release announcing the new election deadline. MWV operates a plant in Charleston, SC.

As previously announced, RockTenn shareholders can elect to receive, for their shares of RockTenn Class A common stock, either cash, WestRock common stock, or a combination of cash and WestRock common stock. The documents necessary for RockTenn shareholders to make an election for their merger consideration were mailed to RockTenn shareholders beginning on May 22, 2015. The cash and stock elections will be subject to proration and adjustment procedures, which are further described in the joint proxy statement/prospectus of WestRock, RockTenn and MWV, dated May 20, 2015, and mailed to RockTenn shareholders and MWV stockholders beginning on May 22, 2015.

As further described in the election materials, to make a valid election, RockTenn registered shareholders must deliver to Computershare Trust Company, N.A., the exchange agent for the transaction, prior to the Election Deadline, a properly completed form of election and letter of transmittal, together with their RockTenn stock certificates, confirmation of book-entry transfer or notice of guaranteed delivery, and a completed Internal Revenue Service (“IRS”) Form W-9 (or the appropriate IRS Form W-8, as applicable). RockTenn shareholders who hold their shares through a broker, dealer, commercial bank, trust company or other nominee must make their elections through such broker, dealer, commercial bank, trust company or other nominee. RockTenn shareholders should carefully read all of the election materials provided to them before making their election.

RockTenn shareholders who have questions regarding the election procedures, who want up-to-date information on the Election Deadline or who wish to obtain copies of the election materials may contact Georgeson Inc., the information agent for the transaction, at (866) 203-9401 (toll-free) or at (781) 575-2137.

About WestRock

WestRock Company aspires to be the premier partner and unrivaled provider of paper and packaging solutions in consumer and corrugated markets. WestRock’s 42,000 team members will support customers around the world from 300 operating and business locations spanning North America, South America, Europe and Asia. WestRock will trade on the NYSE under the ticker symbol WRK.