X0306 4 2021-11-15 0 0001850316 Ascendant Digital Acquisition Corp. III ACDI 0001875763 Ascendant Sponsor LP III C/O ASCENDANT DIGITAL ACQUISITION CORP. III 667 MADISON AVENUE, 5TH FLOOR NEW YORK NY 10065 1 0 1 0 0001876447 Ascendant Sponsor GP III LLC C/O ASCENDANT DIGITAL ACQUISITION CORP. III 667 MADISON AVENUE, 5TH FLOOR NEW YORK NY 10065 1 0 1 0 0001805731 Gomberg David C/O ASCENDANT DIGITAL ACQUISITION CORP. III 667 MADISON AVENUE, 5TH FLOOR NEW YORK NY 10065 1 1 1 0 President Class B Ordinary Shares 2021-11-15 4 J 0 3750 0.00 D Class A Ordinary Shares 3750 7270000 D On November 15, 2021, Ascendant Sponsor LP III (the "Sponsor") forfeited at no cost 3,750 Class B ordinary shares of the Issuer in connection with the election by the underwriters of the Issuer's initial public offering of units to exercise an option granted to them to cover over-allotments in part and not in full. The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-255349) (the "Registration Statement") and have no expiration date. Ascendant Sponsor LP III is the record holder of the securities reported herein. Ascendant Sponsor GP III LLC is the sole general partner of Ascendant Sponsor LP III and David Gomberg is the general partner of Ascendant Sponsor GP III LLC. Mr. Gomberg has voting and investment discretion with respect to the securities held of record by Ascendant Sponsor LP III. See Exhibit 99.1 - Joint Filer Information, which is incorporated herein by reference and describes in further detail the relationships of the Reporting Persons to the Issuer. /s/ Jordan Leon, Attorney-in-Fact for Ascendant Sponsor LP III 2021-11-15 /s/ Jordan Leon, Attorney-in-Fact for Ascendant Sponsor GP III LLC 2021-11-15 /s/ Jordan Leon, Attorney-in-Fact for David Gomberg 2021-11-15