144 0001226464 XXXXXXXX LIVE 0001587523 KNOWLES CORPORATION 001-36102 1151 Maplewood Drive, Itasca IL 60143 (630) 250-5100 DIDIER HIRSCH Director Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

9316 286010.52 84913639 04/28/2026 NYSE Common 04/26/2023 Restricted Stock Issuer N 9316 04/26/2023 Not Applicable Y 04/28/2026 /s/ Didier Hirsch