Sum issue

Hi Folks,

Trying to do something with 6 stock periods, though the table below only shows 3. I have employees that have 6 columns of shares with different vest dates. What I want to do is Sum across the total shares and then add a date parameter to it, but I can't quite get it to work as a measure. This is what I have: 

1  Shares =
2    CALCULATE (
3    SUMX(Stock,Stock[Shares 1]+Stock[Shares 2]+Stock[Shares 3]+Stock[Shares 4]+Stock[Shares 5]),
4    'Stock'[Vest Date 1] >= DATE ( 2017, 11, 1 ) && 'Stock'[Vest Date 1] <= DATE ( 2022, 12, 31 ),
5    'Stock'[Vest Date 2] >= DATE ( 2017, 11, 1 ) && 'Stock'[Vest Date 2] <= DATE ( 2022, 12, 31 ),
6    'Stock'[Vest Date 3] >= DATE ( 2017, 11, 1 ) && 'Stock'[Vest Date 3] <= DATE ( 2022, 12, 31 ),

7    'Stock'[Vest Date 4] >= DATE ( 2017, 11, 1 ) && 'Stock'[Vest Date 4] <= DATE ( 2022, 12, 31 ),

8    'Stock'[Vest Date 5] >= DATE ( 2017, 11, 1 ) && 'Stock'[Vest Date 5] <= DATE ( 2022, 12, 31 ),

9    )

I know the first 3 lines are correct and I know if I just used 1 date line and then closed it with a ")" it works based on just Vest Date 1, but I need to add those other dates because there may be a chance where they are all different. One thing to note is that each share group is released on the vest date. For example, Shares 1 would be linked to Stock[Vest Date 1]. 

This is how the data is laid out on the table. The key to the master table is empl ID:

Any help would be great please. 

Thank you!