Bradley J. Bolzon PhD - 28 Jun 2021 Form 4 Insider Report for Monte Rosa Therapeutics, Inc. (GLUE)

Footnote F1

Each share of Series A convertible preferred stock, Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The Preferred Stock converted into Common Stock on a 3.5305-for-one basis upon the closing of the Issuer's initial public offering without payment or additional consideration. The Preferred Stock had no expiration date.

Footnote F2

Shares held by Versant Venture Capital VI, L.P. ("Versant VI"). Versant Ventures VI GP, L.P. ("Versant Ventures VI GP") is the general partner of Versant VI, and Versant Ventures VI GP-GP, LLC ("Versant Ventures VI GP-GP") is the general partner of Versant Ventures VI GP. The Reporting Person is a managing member of Versant Ventures VI GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant VI. The Reporting Person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein, if any.

Footnote F3

Shares held by Versant Vantage I, L.P. ("Versant Vantage I"). Versant Vantage I GP, L.P. ("Versant Vantage I GP") is the general partner of Versant Vantage I, and Versant Vantage I GP-GP, LLC ("Versant Vantage I GP-GP") is the general partner of Versant Vantage I GP. The Reporting Person is a managing member of Versant Vantage I GP-GP, and may be deemed to share voting and dispositive power over the shares held by Versant Vantage I. The Reporting Person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein, if any.