Investors & landlords

I can't remember if there was an option to take cash instead of shares in Time Warner, Time Inc. I just let it ride and ended up with bits and pieces.  What I have been trying to figure out is if the cash portion of the time Warner Cable and Charter merger I received of $1600 is all taxable or if there is a cost basis how to figure that out. I am thinking that the entire $1600 is considered a gain and that the entire $3200 cost basis I had for the Time Warner cable stock before the merger is now the cost basis for the 7 shares of Charter.  What are your thoughts on this?