0001963745-23-000051.txt : 20230815 0001963745-23-000051.hdr.sgml : 20230815 20230815171613 ACCESSION NUMBER: 0001963745-23-000051 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230815 DATE AS OF CHANGE: 20230815 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Monte Rosa Therapeutics, Inc. CENTRAL INDEX KEY: 0001826457 STANDARD INDUSTRIAL CLASSIFICATION: BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-40522 FILM NUMBER: 231175763 BUSINESS ADDRESS: STREET 1: 321 HARRISON AVENUE STREET 2: SUITE 900 CITY: BOSTON STATE: MA ZIP: 02118 BUSINESS PHONE: 617-949-2643 MAIL ADDRESS: STREET 1: 321 HARRISON AVENUE STREET 2: SUITE 900 CITY: BOSTON STATE: MA ZIP: 02118 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Tamboli Ajim CENTRAL INDEX KEY: 0001855684 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: MONTE ROSA THERAPEUTICS, INC. STREET 2: 40 GUEST STREET CITY: BOSTON STATE: MA ZIP: 02135 144 1 primary_doc.xml 144 0001855684 XXXXXXXX LIVE 0001826457 Monte Rosa Therapeutics, Inc. 001-40522 321 HARRISON AVENUE SUITE 900 BOSTON MA 02118 617-949-2643 Tamboli Ajim Recently departed CFO Common Morgan Stanley Smith Barney LLC

1 New York Plaza 38th Floor New York NY 10004

411861 2677096.00 49659338 08/15/2023 NASDAQ Common 08/15/2023 Exercise of options under a registered plan Issuer N 411861 08/15/2023 Cash Y This Form 144 is being filed for the cashless exercise of options and subsequent sales of the underlying shares commencing on 8/15/2023. 08/15/2023 /s/ AJIM TAMBOLI