ALLEGRO MICROSYSTEMS SVP Sharon Briansky Sells 13,942 Shares at $43.10

Sharon Briansky, Senior Vice President, General Counsel and Secretary of Allegro Microsystems, Inc., sold 13,942 shares of common stock on May 16, 2026, at a price of $43.10 per share. The transaction was coded as "F" (tax withholding) and the shares were disposed of to cover taxes due upon the vesting of restricted stock units and performance-vesting restricted stock units previously granted by the company. Following this transaction, Briansky's remaining holdings in Allegro Microsystems common stock total 79,753 shares. The filing was signed by Raymond Myer as Attorney-in-Fact for Sharon Briansky on May 19, 2026. This is a routine Form 4 filing required for insider transactions, specifically documenting the tax withholding aspect of equity compensation vesting.