X0609 4 2026-05-11 0 0001555280 Zoetis Inc. ZTS 0001018657 MCCALLISTER MICHAEL B false C/O ZOETIS INC. 10 SYLVAN WAY PARSIPPANY NJ 07054 1 0 0 0 0 Common Stock 2026-05-11 4 P 0 3000 77.7578 A 24524 I By trust Common Stock 1209 D Common Stock 6160 I By trust The Price reported in Table I, Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $77.72 to $77.80, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. Shares held in the Michael and Charlene McCallister Family Trust DTD 11/14/2014 Charlene G. McCallister & Mr. Michael B McCallister, TTEEs, for the benefit of the reporting person and the reporting person's spouse. Shares held in the Charlene McCallister Revocable Trust of which the reporting person's spouse is a settlor, trustee and a beneficiary. /s/ Brenda Santuccio, as Attorney-in-Fact 2026-05-12