If they are really 10 year options I might be tempted to sell 1 year dated far out of the money naked calls on the shares that are vested.
Example if your company was, say, Cisco.
You were granted 4000 options at a strike of $22.
Cisco is trading at $24.24 when your shares vest. Instead of selling the vested options for $2.24, you instead write 40 Jan 2014 $26 call contracts and immediately collect $3520. You don't owe tax on this until 2014.
If Cisco is above $26 in Jan 2014, you then exercise your company options and use the proceeds to buy back the $26 calls you wrote and collect an additional $16,000 net profit.
So your total profit in that case was $19,520 vs $8,960 if you had exercised the options immediately when vested.
To do this of course, you need to be liquid enough to cover the naked calls you write during the time it will take you to exercise your company options and get the proceeds. The income from the initial sale of the calls can help with this liquidity since you don't even pay tax on it for a year.
In the case where the stock stays flat for 10 years, you could end up with tons of money in call writing premium. There is a lot of value in 10 year stock options. The longest you can buy an option on the open market is about 2 years.
Some companies may have a policy that doesn't let you sell short...but I am not really sure how they would find out if you were doing this in a private trading account.