This excerpt taken from the SYT 20-F filed Mar 1, 2006.
UK Share Incentive Plan (SIP)
In May 2005, the Employee Share Option Savings Plan was replaced by a Share Incentive Purchase Plan approved by the UK tax authorities. This is available to all UK employees. Under the plan rules, employees may subscribe to purchase Syngenta shares at the fair market value on a monthly basis. An additional matching share is granted on a 3:1 ratio (representing a 25% discount to market value) after 3 years completion of service. The original purchased shares are not subject to a blocking period. The maximum subscription amount per employee is £1,500 per year. A total of 8,160 shares were subscribed and settled through a release of treasury shares at a weighted average purchase price of CHF 132.17. Employees would be entitled to an additional 2,720 shares after three years. These additional shares are currently held in a UK trust fund.