Thanks!
So, if I want to make it even simpler for myself:
- I got $5000 worth (100 * $50) of vested stocks from my company, however say I paid the taxes from my pocket that time
- I sold 30 for $50 each on the vesting day and 70 for $70 each 2 years later, totalling 1500 + 4900 =6,400
- hence, the capital gain is 6400 - 5000 =1,400
