Form 4 Filing for Brian W. King

On May 26, 2026, Brian W. King, Executive Vice President of ADVANCED DRAINAGE SYSTEMS, INC., acquired 950 shares of common stock under the company's Employee Stock Purchase Plan. The shares were acquired at no cost. Following this transaction, Mr. King directly owns 21,686 shares of common stock. Additionally, Mr. King was granted options to purchase 2,115 shares of common stock at an exercise price of $138.09 per share. These options vest in three equal annual installments starting May 26, 2027, contingent upon continued employment. Mr. King also holds 1,778.1777 shares of common stock indirectly through the KSOP plan.