X0202 SCHEDULE 13G 0001847278 XXXXXXXX LIVE Class B Subordinate Voting Shares, without par value 03/26/2026 0002097163 Xanadu Quantum Technologies Ltd 98390R102 777 Bay Street Suite 2400 Toronto Z4 M5G 2C8 Rule 13d-1(c) Bessemer Venture Partners XI Institutional L.P. b E9 13772572 0 13772572 0 13772572 N 9.99 PN Consists of (i) 13,682,497 Class B Subordinate Common Shares, without par value ("Class B Shares") of the Issuer underlying Class A Multiple Voting Shares ("Class A Shares") beneficially owned by the Reporting Person, which Class B Shares are convertible, at the option of the holder, into Class A Shares on a 1-for-1 basis and (ii) 90,075 Class B Shares. The percentage of shares beneficially owned set forth in row 11 above is based on a total of 43,284,437 Class B Shares outstanding as of March 26, 2026. The Reporting Persons have entered into an agreement preventing the conversion of the Class A Shares to the extent such conversion would result in the Reporting Persons holding greater than 9.99% of Class B Shares (the "Beneficial Ownership Blocker"). However, the amounts reported in rows (5), (7) and (9) herein include the Class B Shares issuable upon conversion of the Class A Shares and do not give effect to the Beneficial Ownership Blocker. Therefore, the actual number of Class B Shares beneficially owned by the Reporting Persons, after giving effect to the Beneficial Ownership Blocker, is less than the number of shares reported in rows (5), (7) and (9). Bessemer Venture Partners XI L.P. b E9 9102659 0 9102659 0 9102659 N 9.99 PN Consists of (i) 9,102,659 Class B Shares underlying Class A Shares beneficially owned by the Reporting Person, which Class B Shares are convertible, at the option of the holder, into Class A Shares on a 1-for-1 basis and (ii) 59,925 Class B Shares. The percentage of shares beneficially owned set forth in row 11 above is based on a total of 43,284,437 Class B Shares outstanding as of March 26, 2026. The Reporting Persons have entered into an agreement preventing the conversion of the Class A Shares to the extent such conversion would result in the Reporting Persons holding greater than 9.99% of Class B Shares (the "Beneficial Ownership Blocker"). However, the amounts reported in rows (5), (7) and (9) herein include the Class B Shares issuable upon conversion of the Class A Shares and do not give effect to the Beneficial Ownership Blocker. Therefore, the actual number of Class B Shares beneficially owned by the Reporting Persons, after giving effect to the Beneficial Ownership Blocker, is less than the number of shares reported in rows (5), (7) and (9). Deer XI & Co. L.P. b E9 22935156 0 22935156 0 22935156 N 9.99 PN Consists of (i) 22,785,156 Class B Shares underlying Class A Shares beneficially owned by the Reporting Person, which Class B Shares are convertible, at the option of the holder, into Class A Shares on a 1-for-1 basis and (ii) 150,00 Class B Shares. The percentage of shares beneficially owned set forth in row 11 above is based on a total of 43,284,437 Class B Shares outstanding as of March 26, 2026. The Reporting Persons have entered into an agreement preventing the conversion of the Class A Shares to the extent such conversion would result in the Reporting Persons holding greater than 9.99% of Class B Shares (the "Beneficial Ownership Blocker"). However, the amounts reported in rows (5), (7) and (9) herein include the Class B Shares issuable upon conversion of the Class A Shares and do not give effect to the Beneficial Ownership Blocker. Therefore, the actual number of Class B Shares beneficially owned by the Reporting Persons, after giving effect to the Beneficial Ownership Blocker, is less than the number of shares reported in rows (5), (7) and (9). Deer XI & Co. Ltd. b E9 22935156 0 22935156 0 22935156 N 9.99 CO Consists of (i) 22,785,156 Class B Shares underlying Class A Shares beneficially owned by the Reporting Person, which Class B Shares are convertible, at the option of the holder, into Class A Shares on a 1-for-1 basis and (ii) 150,00 Class B Shares. The percentage of shares beneficially owned set forth in row 11 above is based on a total of 43,284,437 Class B Shares outstanding as of March 26, 2026. The Reporting Persons have entered into an agreement preventing the conversion of the Class A Shares to the extent such conversion would result in the Reporting Persons holding greater than 9.99% of Class B Shares (the "Beneficial Ownership Blocker"). However, the amounts reported in rows (5), (7) and (9) herein include the Class B Shares issuable upon conversion of the Class A Shares and do not give effect to the Beneficial Ownership Blocker. Therefore, the actual number of Class B Shares beneficially owned by the Reporting Persons, after giving effect to the Beneficial Ownership Blocker, is less than the number of shares reported in rows (5), (7) and (9). Xanadu Quantum Technologies Ltd 777 Bay Street, Suite 2400, Toronto, Ontario, M5G 2C8 This statement is being filed by the following persons with respect to certain shares of Cass A Shares and Class B Shares (together, the "Shares") of the Issuer. Bessemer Venture Partners XI L.P. ("BVP XI"), Bessemer Venture Partners XI Institutional L.P. ("BVP XI Inst" and together with BVP XI, the "Funds") directly own Shares. Deer XI & Co. LP ("Deer XI") is the general partner of the funds. Deer XI &Co Ltd. ("Deer XI Ltd.") is the general partner of Deer XI. Deer XI Ltd, Deer XI LP, BVP XI and BVP XI Inst are sometimes individually referred to herein as a "Reporting Person" and collectively as the "Reporting Persons." The address of the principal business office of the Reporting Persons is: c/o Bessemer Venture Partners 1865 Palmer Avenue; Suite 104 Larchmont, NY 10583 Cayman Islands Y Deer XI Ltd- 22,935,156 shares DeerXI LP - 22,935,156 shares BVP XI - 9,162,584 shares BVP XI Inst - 13,772,572 shares Deer XI Ltd- 9.99% Deer XI LP - 9.99% BVP XI - 9.99% BVP XI Inst - 9.99% The percentage of shares beneficially owned set forth above is based on a total of 43,284,437 Class B Shares outstanding as of March 26, 2026. The Reporting Persons have entered into an agreement preventing the conversion of the Class A Shares to the extent such conversion would result in the Reporting Persons holding greater than 9.99% of Class B Shares (the "Beneficial Ownership Blocker"). However, the amounts reported above include the Class B Shares issuable upon conversion of the Class A Shares and do not give effect to the Beneficial Ownership Blocker. Therefore, the actual number of Class B Shares beneficially owned by the Reporting Persons, after giving effect to the Beneficial Ownership Blocker, is less than the number of shares reported in rows (5), (7) and (9). Deer XI Ltd- 22,935,156 shares DeerXI LP - 22,935,156 shares BVP XI - 9,162,584 shares BVP XI Inst - 13,772,572 shares Deer XI Ltd- 0 shares Deer XI LP - 0 shares BVP XI - 0 shares BVP XI Inst - 0 shares Deer XI Ltd- 22,935,156 shares DeerXI LP - 22,935,156 shares BVP XI - 9,162,584 shares BVP XI Inst - 13,772,572 shares Deer XI Ltd- 0 shares Deer XI LP - 0 shares BVP XI - 0 shares BVP XI Inst - 0 shares Y N As the general partner of Deer XI LP, which in turn is the general partner of the Funds, Deer XI Ltd may be deemed to beneficially own all 22,935,156 Shares held directly by the Funds and have the power to direct the dividends from or the proceeds of the sale of such Shares. Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. Bessemer Venture Partners XI Institutional L.P. /s/ Scott Ring 04/02/2026 Bessemer Venture Partners XI L.P. /s/ Scott Ring 04/02/2026 Deer XI & Co. L.P. /s/ Scott Ring 04/02/2026 Deer XI & Co. Ltd. /s/ Scott Ring 04/02/2026