X0609 4 2026-08-07 0000051434 INTERNATIONAL PAPER CO /NEW/ IP 0001795088 Hamic William Thomas false C/O INTERNATIONAL PAPER COMPANY 6400 POPLAR AVENUE MEMPHIS TN 38197 1 Exec. VP & President 0 Common Stock 2026-08-07 4 S 0 24500 41.1999 D 106952 D Common Stock 1138 I By Plan Common Stock Units 2026-08-07 4 I 0 24291 41.58 A Common Stock 24291 39570 I By Plan Represents the weighted average price for 24,500 shares purchased on August 7, 2026, at prices ranging from $41.0400 and $41.1999, inclusive. The reporting person undertakes to provide to International Paper Company, any security holder of International Paper Company, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold as reported in this Form 4. Share numbers rounded. Represents shares of International Paper common stock held through the International Paper Salaried Savings Plan. The information in this report is based on a plan statement as of August 6, 2026. Represents an intra-plan transfer under the non-funded International Paper Company Deferred Compensation Savings Plan from another investment fund into the Company Stock Fund. The transaction does not involve an open-market purchase or sale of International Paper common stock. Each unit represents one share of International Paper common stock. The number of units will vary as the price of the issuer's common stock varies. The units will be settled in cash upon termination of employment. This information is based on a plan statement as of August 7, 2026. Power of Attorney is on file. /s/ Vincent T. Smith, attorney-in-fact for William T. Hamic 2026-08-10