Transaction Details

Footnotes

On March 24, 2026, HCPCIV 1, LLC ("HCPCIV") effected a pro rata in-kind distribution of Heartflow, Inc. common stock to its members in accordance with its operating agreement, including 206,261 shares allocable to Mr. Lightcap based on his indirect interest in HCPCIV immediately prior to the distribution. Following the distribution, HCPCIV is being dissolved. After giving effect to the distribution, Mr. Lightcap's beneficial ownership is held directly (and no longer indirectly through HCPCIV) to the extent of the shares received. | Mr. Lightcap is a controlling member of each of HealthCor Partners Fund II, L.P. and HealthCor Partners Fund, L.P. and may be deemed to have voting and dispositive power with respect to the shares. Mr. Lightcap disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.