Exhibit (a)(23)
We show that you have elected not to accept or "No" for the Tender Offer.
We want to make sure that you understand that your "No" election means:
| 1. | You agree that you will pay all additional Federal and State tax penalties at vest for the affected options and; |
| 2. | You decline the reprice or amendment of your eligible option portion and; |
| 3. | You decline the cash bonus payment, if applicable, in January of 2008. |
If the above is not your intent, we encourage you to log back into the Tender Offer website before March 27, 2007. https://kla.equitybenefits.com/
Your employee id number is the log on and the last 4 digits of your social security number is the password.
Should have questions, please feel free to contact Tracy Laboy at (408) 875-7131 or tracy.laboy@kla-tencor.com.