Curaleaf Holdings, Inc.

Item 8.01. Other Events. On October 6, 2026, Curaleaf Holdings, Inc. (“Curaleaf” or the “Offeror”) filed with the Canadian securities regulatory authorities a Notice of Variation, Change and Extension dated October 6, 2026 (the “Notice of Variation”) in respect of its offer dated August 18, 2026 (the “Original Offer”) to purchase all of the issued and outstanding common shares (the “Common Shares”) of Aurora Cannabis Inc. (“Aurora” or the “Company”), together with the associated rights issued under Aurora’s shareholder rights plan, and issued a press release announcing the Notice of Variation. Pursuant to the Notice of Variation, Curaleaf has (a) amended the consideration offered under the Original Offer to US$1.00 in cash and 0.4013 of a subordinate voting share of Curaleaf per Common Share, subject to adjustment as provided therein (the Original Offer as amended by the Notice of Variation, the “Offer”), and (b) extended the expiry time of the offer from 5:00 p.m. (Mountain Time) on December 1, 2026 to 11:59 p.m. (Mountain Time) on December 4, 2026, unless the offer is further extended, accelerated or withdrawn (the “Expiry Time”). Aurora shareholders who have validly deposited and not withdrawn their Common Shares are not required to take any further action to accept the offer and, if their Common Shares are taken up, will receive the amended consideration. Except as otherwise set out in the Notice of Variation, the terms and conditions of the Original Offer and the accompanying take-over bid circular remain unchanged. Curaleaf has filed the Notice of Variation with the U.S. Securities and Exchange Commission (the “SEC”) as an exhibit to Amendment No. 2 to its Tender Offer Statement on Schedule 14D-1F and to its registration statement on Form F-80 [(File No. 333-299308)], which also relates to its registration statement on Form F-80 (File No. 333-298402). A copy of the Notice of Variation is attached hereto as Exhibit 99.1 and is incorporated herein by reference. A copy of the press release is attached hereto as Exhibit 99.2 and is incorporated herein by reference. Additional Information and Where to Find It This Current Report on Form 8-K does not constitute an offer to sell or a solicitation of an offer to buy any securities. The offer is being made only pursuant to the offer to purchase and take-over bid circular dated August 18, 2026, as amended by the Notice of Variation, and the related letter of transmittal and notice of guaranteed delivery. Curaleaf has filed with the SEC a registration statement on Form F-80 (File No. 333-298402), a registration statement on Form F-80 (File No. 333-299308) and a Tender Offer Statement on Schedule 14D-1F, each as amended, and other documents and information relating to the offer. COMPANY SHAREHOLDERS ARE URGED TO READ THE REGISTRATION STATEMENTS, SCHEDULE 14D-1F, THE AMENDMENTS TO THE REGISTRATION STATEMENTS AND SCHEDULE 14D-1F, THE ORIGINAL OFFER AND CIRCULAR, ALL DOCUMENTS INCORPORATED BY REFERENCE THEREIN AND ANY OTHER RELEVANT DOCUMENTS AND ANY AMENDMENTS OR SUPPLEMENTS TO ANY SUCH DOCUMENTS FILED OR TO BE FILED WITH THE SEC, BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE OFFEROR, THE COMPANY AND THE OFFER. When they become available, investors and Company Shareholders will be able to obtain such documents free of charge at the SEC’s website, www.sec.gov. In addition, documents filed with the SEC by the Offeror will be available free of charge from the Offeror and the Information Agent. You may direct requests for documents to the Information Agent by North American toll free phone at 1-800-530-5189, local and text: 416-751-2066 or by email at info@carsonproxy.com. To obtain timely delivery, such documents should be requested no later than five Business Days before the Expiry Time.