X0609 4 2026-08-19 0001721484 Longeveron Inc. LGVN 0001449392 Hare Joshua false 1951 NW 7TH AVENUE SUITE 520 MIAMI FL 33136 true true true false Chief Scientific Officer 0 Class A Common Stock 2026-08-19 4 A false 286000 0 A 1607796 D Represents the award of time-based vesting Restricted Stock Units (RSUs). Includes RSUs subject to future vesting, including shares of Class B common stock underlying RSUs. Class B common stock is not registered, as further discussed in Footnote 3 below. Amount includes 462,808 shares of Class B common stock, which is not registered under the Securities Exchange Act of 1934, as amended. Holders of Class B common stock have identical rights to holders of common stock, except that holders of Class B common stock are entitled to 5 votes for each share held of record. Each share of Class B common stock is convertible at any time, at the option of the holder, into one share of common stock. /s/ Paul T. Lehr, attorney-in-fact 2026-08-21