Cabaletta Bio Inc. held its Annual Meeting of Stockholders on June 9, 2025. During the meeting, stockholders approved the election of Steven Nichtberger, M.D. and Mark Simon, MBA, as Class III directors. The appointment of Ernst & Young LLP as the independent registered public accounting firm for the fiscal year ending December 31, 2025, was ratified. An amendment to increase the number of authorized shares of common stock from 150,000,000 to 300,000,000 was approved. Additionally, a proposal to adjourn the meeting, if necessary, was approved, although it was ultimately not needed. No other matters were submitted for a vote.