Exhibit 99.1 Semi-Annual Report As of and for the six months ended June 30, 2023 TABLE OF CONTENTS Page CERTAIN DEFINED TERMS 2 INTRODUCTION 2 NOTE ON PRESENTATION 2 CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS 2 MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS 4 INTERIM CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) AT AND FOR THE SIX MONTHS ENDED JUNE 30, 2023 AND 2022 INTERIM CONDENSED CONSOLIDATED STATEMENTS OF PROFIT OR LOSS F-1 INTERIM CONDENSED CO ...

Table of Contents Title of each classTrading Symbol(s)Name of exchange on which registered Ordinary shares, par value $0.000001 per share LANV New York Stock Exchange Warrants, each exercisable for one ordinary share at an exercise price of $11.50 per share LANV-WT New York Stock Exchange UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO ...

Exhibit 99.1 IN GROU Lanvin Group Posts Record Sales and Continued Margin Improvement in 2022 Revenues Up 37% Year-over-Year • Revenues of €422 million for FY2022, a 37% increase over FY2021 • Margin profile improvement with Group gross profit margin increasing to 56% and both contribution profit (1) and adjusted EBITDA margins steadily improving • All portfolio brands delivered revenue growth; Group revenues increased in all channels and geographies • Flagship brand Lanvin had strong growth of 64% YoY and ...