X0306 4 2019-08-13 0000823094 SOTHEBYS BID 0001114673 WEIBLING DENNIS M 1334 YORK AVENUE NEW YORK NY 10021 1 Common Stock 2019-08-13 4 S 0 11000 58.3098 D 70000 D Common Stock 2019-08-14 4 S 0 9000 58.2385 D 61000 D Common Stock 2019-08-14 4 S 0 1000 58.20 D 9000 I By Eagle Wings LLC Common Stock 2019-08-14 5 G 0 E 400 0 D 8600 I By Eagle Wings LLC Deferred Stock Units 2019-08-15 4 A 0 536 58.24 A Common Stock 536 29665.24 D The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $58.15 to $58.50, inclusive. The Reporting Person undertakes to provide to Sotheby's, any security holder of Sotheby's, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $58.0897 to $58.35, inclusive. The Reporting Person undertakes to provide to Sotheby's, any security holder of Sotheby's, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The Reporting Person, his wife and children all own outstanding interests of this limited liability company. The Deferred Stock Units were accrued under the Company's Stock Compensation Plan for Non-Employee Directors (as amended and restated, the "Plan") as a result of a partial or full deferral election with respect to stock compensation paid under the Plan. These units will be settled, on a one-for-one basis, into shares of the Company's Common Stock (except that fractional shares, if any, will be settled in cash) after the reporting person's termination of service on the Company's Board. /s/ David G. Schwartz as Attorney-In-Fact 2019-08-15