How do we report a sold life estate deeded property on our taxes?

My dad passed in March 2018. He had a life estate deed drawn up 9 years ago. My 2 brothers and I are the remaindermen. The FMV when he died was $150,000. We sold the house a few months later for $150,000. We didn’t receive a 1099-s. Each of our net proceeds from the sale was about $47,000 after expenses. Please be as detailed and specific as possible. Thank you.