Form 4 Filing for Richard Madormo

This Form 4 filing details a transaction by Richard Madormo, SVP, Worldwide Sales at ALLEGRO MICROSYSTEMS, INC. On May 16, 2026, Madormo disposed of 5,439 shares of Common Stock via a transaction coded "F", which represents shares withheld to cover taxes due upon the vesting of restricted stock units. The transaction price was $43.10 per share. Following this transaction, Madormo holds 74,687 shares of Common Stock directly. The filing was signed by Raymond Myer, Attorney-in-Fact for Richard Madormo, on May 19, 2026.