Better Oversight of Secondary Sales and Accountability in Concert Ticketing Act of 2019 This bill requires the Federal Trade Commission (FTC) to issue rules regarding transparency in primary and secondary ticket sales. Specifically, the rules must require ticket sellers to make specified disclosures to purchasers, including with respect to ancillary charges and refunds; require ticket sellers to include ancillary charges in refunds to purchasers; prohibit a primary ticket seller from restricting the ability of a purchaser to resell tickets; prohibit certain secondary ticket sales by employees of entities that are involved in hosting, promoting, performing in, or selling tickets to events; prohibit the secondary sale of a ticket for the same seat to multiple persons at the same time; and include other specified requirements and prohibitions related to ticket sales. The bill provides for enforcement of the rules by the FTC and state attorneys general. The FTC must report on its enforcement actions with respect to the ticket market.