Transact SQL :: Group By And Pivot Several Columns

I have a table which I would like to group on several columns, and for the Contract number, I'd like a maximum of four different columns which would contain pivoted information.

Here is my DDL:

CREATE TABLE [dbo].[SV00403](
[CUSTNMBR] [char](15) NOT NULL,
[ADRSCODE] [char](15) NOT NULL,
[Contract_Number] [char](11) NOT NULL,
[WSCONTSQ] [int] NOT NULL,

[Code] ....

Here is my select statement:

SELECT[CUSTNMBR]
,[ADRSCODE]
,[Contract_Number]
,[WSCONTSQ]
,[Equipment_ID]

[Code] ...

Here are the results of the select statement:

And here is what the result set is that I would like to achieve:

The yellow indicates the group by columns. How do I pivot the contract number into the four columns noted above ?