$50 s/b $75
spin-off stock was worth $75
FMV of the spin-off stock = 12.3 * $50 = $922.50
or just enter $0 for the cost.
was this a private company or publicly owned stock? so the sale of frac. share was reported on 1099-B. if you got a 1099-B you'll have to look at future statements to see if the cost basis of both the original and spinoff have been adjusted to what you calculated. might take a month or two for the broker's statements to reflect that adjusted tax basis.
