UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2023 Commission File No.:001-3577 3 REDHILL BIOPHARMA LTD. (Translation of registrant’s name into English) 21 Ha'arba'a Street, Tel Aviv, 6473921, Israel (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Fo ...