Business Description

1. Business Overview Description of Business HeartFlow Holding, Inc. was incorporated in the state of Delaware in July 2007 as Cardiovascular Simulation, Inc. and changed its name to HeartFlow, Inc. in May 2009. On March 1, 2021, HeartFlow, Inc. completed an internal reorganization in which a newly formed parent holding company, HeartFlow Holding, Inc., was established. On July 17, 2025, HeartFlow Holding, Inc.’s stockholders and Board of Directors approved the consolidation of HeartFlow Holding, Inc. with and into HeartFlow, Inc., with HeartFlow, Inc. continuing as the surviving company. The previous holders of HeartFlow Holding, Inc.’s common stock and preferred securities became holders of HeartFlow, Inc.’s common stock and preferred securities based on a 1 -to-1 conversion ratio, and the equity incentive plan, outstanding equity awards, outstanding warrants and certain other equity-related agreements of HeartFlow Holding, Inc. were assumed by HeartFlow, Inc. In connection with this consolidation, HeartFlow, Inc. changed its name to Heartflow, Inc. (the “Company”). The Company is a commercial-stage medical technology company that provides software and artificial intelligence (“AI”) designed to deliver a non-invasive solution for diagnosing and managing coronary artery disease (“CAD”). The Company’s novel Heartflow Platform uses AI and advanced computational fluid dynamics to create a personalized 3D model of a patient’s heart based off a single coronary computed tomography angiography (“CCTA”). This results in actionable data on blood flow, stenosis, plaque volume and plaque composition. The Company’s Heartflow FFR CT Analysis and Plaque Analysis software assists physicians in diagnosing, managing and delivering precision care to patients with CAD. The Company was awarded Conformité Européene Mark for its Heartflow FFR CT Analysis in July 2011. The Company received clearance from the U.S. Food and Drug Administration (“FDA”) in November 2014 for its Heartflow FFR CT Analysis and in October 2022 for its Plaque Analysis. The Company’s headquarters is located in Mountain View, California, and the Company also has offices in Santa Rosa, San Francisco, and Rohnert Park, California, Austin, Texas, and Tokyo, Japan. The Company had the following wholly-owned subsidiaries as of December 31, 2025: Entity Name Country of Incorporation HeartFlow Japan G.K. Japan HeartFlow U.K. Ltd United Kingdom Effective November 2025, HeartFlow Technology U.K. Limited, a wholly-owned subsidiary in the United Kingdom, was dissolved. Effective July 2024, HeartFlow International Sarl, a wholly-owned subsidiary in Switzerland, was dissolved. Reverse Stock Split On July 31, 2025, the Company’s Board of Directors approved an amendment to the Company ’ s amended and restated certificate of incorporation to immediately effect a reverse stock split of the shares of the Company’s outstanding common stock at a ratio of 1.0-for-2.92 (the “Reverse Stock Split”). The number of authorized shares and par value per share were not adjusted as a result of the Reverse Stock Split. All references to shares, options to purchase common stock, share amounts, per share amount, and related information contained in the consolidated financial statements have been retrospectively adjusted to reflect the effect of the Reverse Stock Split for all periods presented. The shares of common stock underlying outstanding stock options and other equity instruments were proportionately reduced and the respective exercise prices, if applicable, were proportionately increased in accordance with the terms of the agreements governing such securities. In addition, the conversion ratios for each series of the Company’s redeemable convertible preferred stock, which automatically convert into shares of common stock upon the closing of the Company’s initial public offering (the “IPO”) of common stock, were proportionally adjusted. Initial Public Offering On August 11, 2025, the Company completed its IPO of 19,166,667 shares of its common stock, which included an additional 2,500,000 shares of common stock purchased by the underwriters pursuant to their option to purchase additional shares, at a price to the public of $ 19.00 per share. The gross proceeds to the Company from the IPO were approximately $ 364.2 million, before deducting underwriting discounts and commissions and offering expenses payable by the Company of $ 31.8 million.…