Can you look up a TB's ownership-how?

I am looking at a race record and just messaged the person who has listed this horse. She has limited information. He is for sale to a non-racing home. I guess I thought I would see change of ownership on his papers but nothing is listed. I wanted to find out why he had a gap in racing but his current owner didn’t own him then. Is there a way to look up a former owner?

You can look up his race record on Equibase by his name, and on the results tab you can view the chart for each race. It will show who owned and trained him at the time of that particular race.