Curaleaf names BDO USA as new independent auditor

Curaleaf Holdings, Inc. is changing its independent auditor.

Rhea-AI Filing Summary

Curaleaf Holdings, Inc. is changing its independent auditor. At the company’s request, PKF O’Connor Davies, LLP will resign as auditor effective May 6, 2026, and BDO USA, P.C. will be appointed as the new auditor until the close of the next annual shareholders’ meeting.

The board of directors approved both the resignation and the appointment. Curaleaf states that the former auditor did not issue any modified opinions for the two most recently completed fiscal years or subsequent periods, and the board believes no “reportable event” under National Instrument 51-102 has occurred. Both PKF O’Connor Davies and BDO USA have provided letters agreeing with the company’s Notice of Change of Auditor.

Insights

Audit & governance analyst

Curaleaf changes auditors with no modified opinions or reportable events disclosed.

Curaleaf is replacing PKF O’Connor Davies, LLP with BDO USA, P.C. as independent auditor effective May 6, 2026. The board approved both the resignation and the new appointment, which will run until the next annual shareholders’ meeting.

The company states the former auditor issued no modified opinions for the last two fiscal years or later periods, and the board believes no “reportable event” under National Instrument 51-102 has occurred. Both audit firms submitted letters agreeing with Curaleaf’s Notice of Change of Auditor, which helps signal an orderly transition.

While auditor changes can attract attention, this disclosure frames it as a routine switch with no identified disputes or qualifications in past reports. Future Canadian and U.S. securities filings audited by BDO USA will show how smoothly the transition proceeds.

Key Figures

Effective date of auditor change: May 6, 2026 Audit opinion history: Two most recent fiscal years

2 metrics

Effective date of auditor change May 6, 2026 PKF O’Connor Davies resignation and BDO USA appointment

Audit opinion history Two most recent fiscal years No modified opinions expressed by former auditor

Key Terms

Change of Auditor, National Instrument 51-102, reportable event

3 terms

Change of Auditor financial

"Curaleaf Holdings, Inc. (the “Corporation”) NOTICE OF CHANGE OF AUDITOR"

National Instrument 51-102 regulatory

"Pursuant to Section 4.11 of National Instrument 51-102 – Continuous Disclosure Obligations"

National Instrument 51-102 is a Canadian securities rule that requires public companies to regularly publish clear, standardized information about their finances and significant developments, such as quarterly and annual reports, management discussion and analysis, and notices of material changes. For investors it acts like a rule forcing businesses to keep their financial “windows” clear and up to date, making it easier to compare companies, spot risks, and make informed decisions.

reportable event regulatory

"no “reportable event” as defined in NI 51-102 has occurred"

FAQ

What auditor change did Curaleaf Holdings (CURLF) announce in this 6-K?

Curaleaf requested that PKF O’Connor Davies, LLP resign as independent auditor effective May 6, 2026, and will appoint BDO USA, P.C. as successor auditor. BDO will serve until the close of Curaleaf’s next annual shareholders’ meeting, subject to shareholder approval processes.

Why is the Curaleaf (CURLF) auditor change considered routine in this filing?

Curaleaf states its former auditor issued no modified opinions for the last two completed fiscal years or later periods. The board also believes no “reportable event” under National Instrument 51-102 occurred, and both PKF O’Connor Davies and BDO USA submitted letters agreeing with the Notice of Change.

Who approved the Curaleaf (CURLF) change from PKF O’Connor Davies to BDO USA?

Curaleaf reports that its Board of Directors considered and approved both the resignation of PKF O’Connor Davies, LLP as auditor and the appointment of BDO USA, P.C. as successor auditor. This indicates the change was overseen at the board level rather than initiated solely by management.

Did Curaleaf’s former auditor issue any modified opinions before resigning?

The filing states that PKF O’Connor Davies, LLP did not express any modified opinion in reports for Curaleaf’s two most recently completed fiscal years or subsequent periods up to the effective resignation date. This suggests prior audit reports were issued without qualifications or adverse modifications.

What is a “reportable event” in Curaleaf’s change of auditor disclosure?

Under National Instrument 51-102, a “reportable event” can include disagreements or significant issues between a company and its auditor. Curaleaf’s board states that, in its opinion, no reportable event has occurred since PKF O’Connor Davies, LLP was appointed, framing the auditor change as non-adversarial.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/11/2026 - 11:48 AM Learn about SEC filing dates

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 UNDER
THE SECURITIES EXCHANGE ACT OF 1934

For the month of May, 2026

Commission File Number: 333-249081

Curaleaf Holdings, Inc. (Name of Registrant)

666 Burrard Street, Suite 1700,

Vancouver, British Columbia V6C 2X8, Canada
(Address of Principal Executive Office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☐    Form 40-F ☒

SIGNATURE

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.

						CURALEAF HOLDINGS, INC.
						(Registrant)
Date:			May 6, 2026			By:			/s/ Peter Clateman
						Name:			Peter Clateman
						Title:			Chief Legal Officer

EXHIBIT INDEX

Exhibit Number						Description
99.1						Notice of Change of Auditor
99.2						Former Auditor Letter
99.3						Successor Auditor Letter

CURALEAF HOLDINGS, INC. (the “Corporation”) NOTICE OF CHANGE OF AUDITOR (the “Notice”) To: PKF O’Connor Davies, LLP And To: BDO USA, P.C. RE: Notice Regarding Change of Auditor Pursuant to Section 4.11 of National Instrument 51- 102 – Continuous Disclosure Obligations (“NI 51-102”) Curaleaf Holdings, Inc. (the “Company”) hereby gives notice pursuant to Section 4.11 of NI 51-102 as follows: 1. At the request of the Company, PKF O’Connor Davies, LLP (the “Former Auditor”), will be resigning as the Company’s independent auditor effective May 6, 2026 (the “Effective Date”). 2. On the Effective Date, the Company will appoint BDO USA, P.C. (the “Successor Auditor”) to fill the vacancy created by the resignation of the Former Auditor, and to hold such position until the close of the next annual meeting of shareholders of the Company. 3. The resignation of the Former Auditor as auditor of the Company and the appointment of the Successor Auditor as auditor of the Company were considered and approved by the Board of Directors of the Company. 4. The Former Auditor has not expressed any modified opinion in its reports for the Company’s two (2) most recently completed fiscal years or for any period subsequent to the most recently completed period for which an audit report was issued and preceding the Effective Date. 5. In the opinion of the Board of Directors of the Corporation, no “reportable event” as defined in NI 51-102 has occurred since the date of the Former Auditor’s appointment. DATED May 5, 2026 CURALEAF HOLDINGS, INC. Per: “Ed Kremer” Ed Kremer Chief Financial Officer

PKF O’CONNOR DAVIES, LLP 245 Park Avenue, New York, NY 10167 I Tel: 212.867.8000 or 212.286.2600 I Fax: 212.286.4080 I www.pkfod.com PKF O’Connor Davies, LLP is a member firm of the PKF International Limited network of legally independent firms and does not accept any responsibility or liability for the actions or inactions on the part of any other individual member firm or firms. May 6, 2026 British Columbia Securities Commission Alberta Securities Commission Financial and Consumer Affairs Authority of Saskatchewan The Manitoba Securities Commission Ontario Securities Commission Autorité des marchés financiers (Québec) Financial and Consumer Services Commission (New Brunswick) Nova Scotia Securities Commission Financial and Consumer Services Division (Prince Edward Island) Office of the Superintendent of Securities Service, Newfoundland and Labrador Office of the Yukon Superintendent of Securities Office of the Superintendent of Securities (Northwest Territories) Office of the Superintendent of Securities, Nunavut Dear Sirs/Mesdames: Re: Curaleaf Holdings, Inc. – Change of Auditor Pursuant to National Instrument 51-102 – Continuous Disclosure Obligations, we have reviewed the information contained in the Notice of Change of Auditor of Curaleaf Holdings, Inc. dated May 5, 2026 (the "Notice") and, based on our knowledge of such information at this time, we agree with the statements made in the Notice. Yours very truly, PKF O’Connor Davies, LLP New York, New York

BDO USA refers to BDO USA, P.C., a Virginia professional corporation, also doing business in certain jurisdictions with an alternative identifying abbreviation, such as Corp. or P.S.C. BDO USA, P.C. is the U.S. member of BDO International Limited, a UK company limited by guarantee, and forms part of the international BDO network of independent member firms. BDO is the brand name for the BDO network and for each of the BDO Member Firms. 109 Michigan St. NW, Suite 640 Grand Rapids, MI 49503 Tel: 616-774-7000 Fax: 616-776-3680 www.bdo.com May 6, 2026 British Columbia Securities Commission Alberta Securities Commission Financial and Consumer Affairs Authority of Saskatchewan The Manitoba Securities Commission Ontario Securities Commission Autorité des marchés financiers (Québec) Financial and Consumer Services Commission (New Brunswick) Nova Scotia Securities Commission Financial and Consumer Services Division (Prince Edward Island) Office of the Superintendent of Securities Service, Newfoundland and Labrador Office of the Yukon Superintendent of Securities Office of the Superintendent of Securities (Northwest Territories) Office of the Superintendent of Securities, Nunavut Dear Sirs/Mesdames: Re: Curaleaf Holdings, Inc. – Change of Auditor Pursuant to National Instrument 51-102 – Continuous Disclosure Obligations, we have reviewed the information contained in the Notice of Change of Auditor of Curaleaf Holdings, Inc. dated May 5, 2026 (the “Notice”) and, based on our knowledge of such information at this time, we agree with the statements made in the Notice pertaining to our firm. Yours very truly, Grand Rapids, Michigan

Filing Exhibits & Attachments

3 documents

Press Releases

• EX-99.1 EX-99.1 2.4 KB
• EX-99.2 EX-99.2 2.2 KB
• EX-99.3 EX-99.3 2.3 KB