INDIVIOR PLC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2025

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number:001-37835

(Exact name of registrant as specified in its charter)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes☑ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes☑ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No☑

As of October 1, 2025, the number of outstanding ordinary shares was 124,853,897.

Table of Contents

Important cautionary note regarding forward-looking statements

Certain statements contained herein, as well as in other filings we make with the SEC and other written and oral information we release, regarding our performance or other events or developments in the future constitute “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements include, among other things, express and implied statements pertaining to the Company’s financial guidance including revenue, gross margin and adjusted EBITDA for 2025 and its medium- and long-term growth outlook; expected levels of future rebate payments, research and development expenses, and capital expenditures; potential future investment opportunities; and statements containing the words "believe," "anticipate," "plan," "expect," "intend," "estimate," "forecast," "strategy," "target," "goal," "guidance," "outlook," "potential," "project," "priority," "may," "will," "should," "would," "could," "can," the negatives thereof, and variations thereon and similar expressions. By their nature, forward-looking statements involve risks and uncertainties as they relate to events or circumstances that may or may not occur in the future.

Actual results may differ materially from those expressed or implied in such statements because they relate to future events. For information about some of the risks and important factors that could affect our future results and financial condition, see the discussion of “Risk Factors” in our Annual Report on Form 10-K filed March 3, 2025, our Quarterly Reports on Form 10-Q filed May 1, 2025 and July 31, 2025, Part II Item 1A herein, and our other filings with the U.S. Securities and Exchange Commission.

We have based the forward-looking statements in this report on our current expectations and beliefs concerning future events. Forward-looking statements contained in this report speak only as of the day they are made and, except as required by law, we undertake no obligation to update or revise any forward-looking statement, whether due to new information, future developments or otherwise.