X0508 4 2026-02-04 0 0000915389 EASTMAN CHEMICAL CO EMN 0001364708 Costa Mark J 200 S. WILCOX DRIVE KINGSPORT TN 37660 1 1 0 0 CEO & Board Chair 0 Common Stock 2026-02-04 4 M 0 48649 65.16 A 502635 D Common Stock 2026-02-04 4 F 0 43638 78.49 D 458997 D Common Stock 3231 I By ESOP Employee Stock Option (right to buy) 65.16 2026-02-04 4 M 0 48649 0 D 2017-02-26 2026-02-25 Common Stock 48649 0 D The reporting person exercised stock options and used a portion of the shares to pay the option exercise price and cover tax withholding obligations (a "net exercise") by electing to have the issuer withhold shares otherwise deliverable after the stock option exercise. The reporting person retained all of the remaining shares. Represents the number of shares withheld by Eastman Chemical Company to satisfy the exercise price and tax withholding obligations in connection with the net settlement of the stock options and does not represent a sale of any shares by the Reporting Person. /s/ Mark D. Austin, by Power of Attorney for Mark J. Costa 2026-02-06