X0306 4 2020-10-14 0 0001741830 Kronos Bio, Inc. KRON 0001753644 Loven Jakob C/O KRONOS BIO, INC. 1300 SO. EL CAMINO REAL, SUITE 300 SAN MATEO CA 94402 1 0 0 0 Common Stock 2020-10-14 4 C 0 1376313 A 1376313 I See footnote Common Stock 2020-10-14 4 C 0 169031 16.15 A 1545344 I See footnote Series A Preferred Stock 2020-10-14 4 C 0 1304563 D Common Stock 1376313 0 I See footnote Convertible Promissory Note 16.15 2020-10-14 4 C 0 2729859.81 0.00 D 2022-02-20 Common Stock 169031 0 I See footnote Each share of Series A Preferred Stock (the "Preferred Stock") automatically converted into 1.055 shares of Common Stock upon the closing of the Issuer's initial public offering. The Preferred Stock had no expiration date. The securities are held by Nextech V Oncology S.C.S, SICA-SIF ("Nextech V"). The reporting person currently serves as a member of the leadership team at Nextech Invest AG ("Nextech AG"), the investment advisor to Nextech V, and may be deemed to have shared voting and/or investment power over the securities held by Nextech V. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose. The convertible promissory note automatically converted into shares of the Issuer's common stock upon the closing of the Issuer's initial public offering. /s/ David Tanen, Attorney-in-Fact 2020-10-16