X0508 4 2026-02-06 0 0001587523 Knowles Corp KN 0001598086 Giesecke Daniel J. 1151 MAPLEWOOD DRIVE ITASCA IL 60143 0 1 0 0 Senior Vice President & COO 0 Common Stock 2026-02-06 4 F 0 3332 26.98 D 180848 D Common Stock 2026-02-09 4 S 0 15885 27.22 D 164963 D These shares represent the payment of the tax liability by withholding securities incident to the vesting of a restricted stock grant issued on February 6, 2023 in accordance with Rule 16b-3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.22 to $27.23, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased/sold at each separate price within the ranges set forth in this footnote to this Form 4. By: Robyn B. Martin For: POA for Daniel Giesecke 2026-02-10