Form SCHEDULE 13D Anteris Technologies Filed by: Medtronic plc

The principal business offices of Medtronic are located at Building 2, Parkmore Business Park West, Galway, Ireland and the principal business offices of Covidien are located at Ground Floor, Espace Monterery, 40 Av Monterey, L-2163 Luxembourg.

The Reporting Persons are principally engaged in the business of therapeutic medical technology, specializing in implantable and interventional therapies.

During the last five years, neither Medtronic nor Covidien, nor, to the best of their knowledge, any of their executive officers or directors, have been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

During the last five years, neither Medtronic nor Covidien, nor, to the best of their knowledge, any of their executive officers or directors, have been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

Ireland

On January 20, 2026, Anteris entered into a Stock Purchase Agreement (the "Purchase Agreement") with Covidien pursuant to which the Company agreed to issue and sell (the "Private Placement") to Covidien 15,652,173 shares of Common Stock (the "Shares") at a purchase price of $5.75 per PIPE Share. Covidien paid approximately $90.0 million to Anteris to purchase the PIPE Shares. The funds for the purchase of the Shares were provided from funds on hand of Covidien and affiliated entities. The foregoing description of the Purchase Agreement does not purport to be complete and is qualified in its entirety by the full text of such agreement, which is attached as Exhibit 99.1 to this Schedule 13D and incorporated herein by reference.

The information set forth in Item 3 of this Schedule 13D is hereby incorporated by reference in its entirety into this Item 4. In connection with the Purchase Agreement, Anteris and Covidien entered into a Registration Rights Agreement (the "Registration Rights Agreement"), dated as of January 22, 2026. Pursuant to the Registration Rights Agreement, Anteris shall prepare and file with the Securities and Exchange Commission a registration statement covering the resale of all of the Shares not already covered by an existing and effective registration statement as soon as reasonably practicable and in any event no later than the 18th-month anniversary of the Closing Date (as defined in the Purchase Agreement) and indemnify, defend and hold harmless each holder of Shares in connection therewith. Anteris and Covidien also entered into an Investor Rights Agreement dated as of January 22, 2026 in connection with the Purchase Agreement (the "Investor Rights Agreement"). Pursuant to the Investor Rights Agreement, Covidien will have a participation right with respect to the issuance of certain of Anteris's securities. Further pursuant to the Investor Rights Agreement, Covidien shall have the right to designate one non-voting observer to the Anteris Board of Directors. The Investor Rights Agreement also contains transfer restrictions through May 22, 2027, an agreement to discuss potential collaborations, a customary standstill provision, a voting agreement, and a requirement upon Anteris' receipt of certain acquisition proposals to notify Covidien of such proposal and to allow Covidien to negotiate its own proposed alternate transaction. The foregoing descriptions of the Investor Rights Agreement and the Registration Rights Agreement do not purport to be complete and are qualified in their entirety by the full text of such agreements, which are attached as Exhibit 99.2 and Exhibit 99.3, respectively, to this Schedule 13D and incorporated herein by reference. The Reporting Persons acquired the Shares for investment purposes. Except as otherwise described herein, neither Reporting Person has present plans or proposals that relate to or would result in any of the matters enumerated in Item 4(a)-(j) of Schedule 13D. However, each Reporting Person reserves the right to change its intentions or purpose and take any such action, subject to the restrictions and other terms set forth in the Investor Rights Agreement.

Medtronic, through Covidien, is the beneficial owner of 15,652,173 shares of Common Stock, which represent approximately 16.2% of the outstanding shares of Common Stock of Anteris.

Medtronic, through Covidien, has the sole power to vote and the sole power to dispose of all shares of Anteris beneficially owned by it.

The only transaction in the Shares that was effected by any Reporting Person during the past 60 days is the acquisition of the Shares pursuant to the Purchase Agreement, as reported in Item 3 above.

No other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds of the sale of, the Shares.

Not applicable.

The information provided and incorporated by reference in Items 3, 4 and 5 is hereby incorporated by reference. Other than as described in this Schedule 13D described above, there are no other contracts, arrangements, understandings or relationships (legal or otherwise) between either Reporting Person and any person with respect to any securities of Anteris, including but not limited to the transfer or voting of any securities of Anteris, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or loss, or the giving or withholding of proxies.

Exhibit 99.1*: Stock Purchase Agreement, dated January 20, 2026, by and between Anteris Technologies Global Corp. and Covidien. Exhibit 99.2*: Registration Rights Agreement, dated January 22, 2026, by and between Anteris Technologies Global Corp. and Covidien. Exhibit 99.3*: Investor Rights Agreement, dated January 22, 2026, by and between Anteris Technologies Global Corp. and Covidien. Exhibit 99.4: Executive Officers and Directors of Medtronic and Covidien. Exhibit 99.5: Joint Filing Agreement, dated January 29, 2026, by and between Medtronic and Covidien. *Portions of this exhibit have been redacted in compliance with Regulation S-K Item 601(b)(2)(ii).