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 November 2025
Commission File No.:001-35773

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 Form 40-F.

Form 20-F ☒ Form 40-F ☐

INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K

On November 26, 2025, RedHill Biopharma Ltd. (the “Company”) filed a prospectus supplement to increase the maximum aggregate offering amount of the American Depositary Shares, each representing ten thousand (10,000) of its ordinary shares, par value NIS 0.01 per share, that may be issued and sold from time to time under the At The Market Offering Agreement that the Company entered into with H.C. Wainwright & Co., LLC on February 3, 2025.

Attached hereto and incorporated by reference in this Report on Form 6-K are the following exhibits:

Exhibit 5.1: Opinion of Goldfarb Gross Seligman & Co.

Exhibit 5.2: Opinion of Haynes and Boone, LLP.

Exhibit 23.1: Consent of Goldfarb Gross Seligman & Co. (included in Exhibit 5.1).

Exhibit 23.2: Consent of Haynes and Boone, LLP (included in Exhibit 5.2).

This Form 6-K is hereby incorporated by reference into the Company's Registration Statements on Form S-8 filed with the Securities and Exchange Commission on May 2, 2013 (Registration No. 333-188286), on October 29, 2015 (Registration No. 333-207654), on July 25, 2017 (Registration No. 333-219441), on May 23, 2018 (Registration No. 333-225122), on July 24, 2019 (File No. 333-232776), on March 25, 2021 (File No. 333-254692), on May 3, 2021 (File No. 333-255710), on January 11, 2022 (File No. 333-262099), on June 27, 2022 (File No. 333-265845), on June 29, 2023 (File No. 333-273001), on June 20, 2024 (File No. 333-280327) and on March 25, 2025 (File No. 333-286082), and its Registration Statements on Form F-3 filed with the Securities and Exchange Commission on March 30, 2021 (File No. 333-254848), on August 4, 2023 (File No. 333-273709), on October 13, 2023 (File No. 333-274957), as amended, and on August 9, 2024 (File No. 333-281417).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	REDHILL BIOPHARMA LTD.
	(the “Registrant”)

Date: November 26, 2025	By:	/s/ Dror Ben-Asher
	Name:	Dror Ben-Asher
	Title:	Chief Executive Officer

RedHill Biopharma Ltd. 6-K