Amendment to Schedule 13G Filing for Heartflow, Inc.

This filing is an amendment to a Schedule 13G for Heartflow, Inc. The filing is made by Wellington Management Group LLP and its related entities, including Wellington Group Holdings LLP, Wellington Investment Advisors Holdings LLP, and Wellington Management Company LLP. As of March 5, 2026, Wellington Management Group LLP beneficially owns 11,921,247 shares of Heartflow, Inc. common stock, representing 14.0% of the class. This represents an increase from a previous ownership of 6.9%. The shares are held of record by clients of one or more investment advisers, with Vanguard Health Care Fund noted as a client with beneficial ownership exceeding five percent. The filing asserts that the securities were acquired and are held in the ordinary course of business and not for the purpose of influencing control of the issuer.