Packaging Corp Of America DEFA14A Filing

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Filing Documents

• d108334ddefa14a.htm (DEFA14A) — 25KB
• g108334page001.jpg (GRAPHIC) — 23KB
• g108334page001a.jpg (GRAPHIC) — 11KB
• g108334page001b.jpg (GRAPHIC) — 3KB
• g108334page001c.jpg (GRAPHIC) — 1KB
• g108334page001e.jpg (GRAPHIC) — 10KB
• g108334page001f.jpg (GRAPHIC) — 2KB
• g108334page001g.jpg (GRAPHIC) — 2KB
• g108334page001h.jpg (GRAPHIC) — 1KB
• g108334page002.jpg (GRAPHIC) — 2KB
• 0001193125-26-127623.txt ( ) — 101KB

From the Filing

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the registrant Filed by a party other than the registrant Check the appropriate box: Preliminary proxy statement Confidential, for use of the Commission only (as permitted by Rule 14a-6(e)(2)) Definitive proxy statement Definitive additional materials Soliciting material pursuant to section 240.14a-12 Packaging Corporation of America (Name of Registrant as Specified in Its Charter) Registrant (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant) Payment of filing fee (Check the appropriate box): No fee required. Fee paid previously with preliminary materials: Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 Online Go to www.envisionreports.com/PKG or scan the QR code – login details are located in the shaded bar below. Votes submitted electronically must be received by the start of the meeting. Important Notice Regarding the Availability of Proxy Materials for the Packaging Corporation of America Annual Meeting of Shareholders to be Held on May 12, 2026 Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual meeting of shareholders are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The 2025 Annual Report and 2026 Proxy Statement / Notice of Meeting are available at: www.envisionreports.com/PKG Easy Online Access – View your proxy materials and vote. Step 1: Go to www.envisionreports.com/PKG. Step 2: Click on Cast Your Vote or Request Materials. Step 3: Follow the instructions on the screen to log in. Step 4: Make your selections as instructed on each screen for your delivery preferences. Step 5: Vote your shares. When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Obtaining a Copy of the Proxy Materials – If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before May 1, 2026 to facilitate timely delivery. 2 NOT COY + 048XDC Annual Meeting Notice Packaging Corporation of America's Annual Meeting of Shareholders will be held on Tuesday, May 12, 2026 at Packaging Corporation of America Corporate Office, 1 N. Field Court, Lake Forest, Illinois, 60045 at 8:30 A.M. Central Time. Proposals to be voted on at the meeting are listed below along with the Board of Directors' recommendations. The Board of Directors recommends a vote FOR all the nominees listed and FOR Proposals 2 and 3: 1. Election of Directors: 01 - Cheryl K. Beebe 02 - Duane C. Farrington 03 - Karen E. Gowland 04 - Donna A. Harman 05 - Mark W. Kowlzan 06 - Robert C. Lyons 07 - Samuel M. Mencoff 08 - Roger B. Porter 09 - Thomas S. Souleles 2. Proposal to ratify appointment of KPMG LLP as our auditors. 3. Proposal to approve our executive compensation. PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please bring this notice with you. Here's how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE : You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. – Internet – Go to www.envisionreports.com/PKG . Click Cast Your Vote or Request Materials. – Phone – Call us free of charge at 1-866-641-4276. – Email – Send an email to investorvote@computershare.com with "Proxy Materials Packaging Corporation of America" in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by May 1, 2026.

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