1099 to investor / partner

[Derek Smith]

Hi all, I have a question hopefully someone with some expertise may be willing to help with? 

Should I 1099 an investor for only the profit or should I 1099 for the initial investment and the profits?

Back story...
A family member went in 50/50 with me on a spec build house. We are splitting profits 50/50. I have an LLC and try to make sure I always do everything properly on my end as for claiming all income and expenses and have for years. However the family member doesn't have an LLC. This was a simple verbal 50/50 deal. Multiple small checks were written to my LLC along the way from him. Now is time to return original investment and profit. Should I 1099 him on only the profit or should I 1099 for the initial investment and the profits.

Thanks,

Derek