MKS INC

On July 25, 2011, our Board of Directors approved, and on July 27, 2011, we publicly announced a share repurchase program for the repurchase of up to an aggregate of $200 million of our outstanding common stock from time to time in open market purchases, privately negotiated transactions or through other appropriate means. The timing and quantity of any shares repurchased depends upon a variety of factors, including business conditions, stock market conditions and business development activities, including, but not limited to, merger and acquisition opportunities. These repurchases may be commenced, suspended or discontinued at any time without prior notice.

During 2025, we repurchased approximately 546,000 shares of our common stock for total consideration of $45 million. During 2024, we did not repurchase any shares of common stock. We have repurchased approximately 3.1 million shares of common stock for approximately $172 million pursuant to the program since its adoption.