As of Dec 31, 2002, Terry has received seven stock grants:

Date	Shares	Price	vesting schedule
4/16/2001	5,000,000	17.62	3-year vest (1/2 shares vest after 1 year; remaining then vest monthly over two more years)
4/16/2001	2,500,000	30.00	1-year vest (starting immediately)
4/16/2001	1,500,000	60.00	Vests 214,285 shares/month during the 7 months starting May 2004
4/16/2001	1,000,000	75.00	Vests 250,000 shares/month during the 4 months starting Dec 2004
10/2/2001	1,000,000	9.24	4-year vest (1/8 shares vest after 1 year; remaining then vest montly over next three years)
7/11/2002	2,000,000	12.92	2-year vest (starting immediately) (at the May 30 2003 price of $30/share, that's a value of about $1.5 millon/month)
12/11/2002	800,000	16.46	4-year vest (starting immediately)

Notes

When Terry arrived, in addtion to the four grants of options he received from Yahoo!, he also went out and bought, using his own money, a boatload of shares (one million) on the open market. That was a great act of leadership, I thought.
The standard Yahoo join grant is one that has a four-year vest, with a 1-year cliff (vesting doesn't start until the one-year anniversary, at which point 1/4th of the shares vest; remaining shares vest monthly over the next three years. (A five-year vest is common in the industry.)
The 10,000,000 options Terry got when he joined are almost standard with respect to vesting. One fourth (half of the 5M lot) vest after one year, but that 5M lot stops vesting after the end of three years. The 1.5M (@$60) lot pick up vesting when the first 5M lot stops off, and the 1M (@$75) lot picks up vesting after that, completing the four-year vest. The only differences from the standard is that half the shares are priced at higher than market, and that some of those higher-than-market shares started vesting immediately.