Form 4 Filing for Michael Doogue, President and CEO of Allegro Microsystems, Inc.

This filing details a transaction by Michael Doogue, President and CEO of Allegro Microsystems, Inc. On May 11, 2026, Mr. Doogue disposed of 30,089 shares of Common Stock in a series of transactions with a weighted average price of $47.2349 per share, with individual prices ranging from $47.20 to $47.44. Following this disposition, Mr. Doogue directly holds 178,749 shares of Common Stock. The filing also notes a change in beneficial ownership, where 36,800 shares were transferred from Mr. Doogue's direct holdings to the Michael C. Doogue Revocable Trust of 2015, changing the form of ownership from direct to indirect. The trust now holds 252,797 shares. The transactions were reported on Form 4, with the signature date of May 13, 2026.