Financial Results Release:

Thursday, Oct. 26, 2023

Approximately 4:15 p.m. Eastern Time

Via wire distribution and www.eastman.com,

News Center and SEC Form 8-K filing.

Advance Slides, Webcast and

Teleconference:

Friday, Oct. 27, 2023

8:00 a.m. Eastern Time

Via listen-only live webcast and teleconference.

• Advance slides and prepared remarks: posted Thursday, Oct. 26, evening at investors.eastman.com
• Webcast: Eastman Q3 2023 Webcast to join live webcast
• Teleconference: Toll-Free dial-in number +1 (833) 470-1428 Passcode: 945195

Teleconference Pre-Registration:

To speed up connecting into the teleconference, a pre-registration link for participants is available below. Upon registration, participants will receive unique dial-in information via email. https://www.netroadshow.com/events/login?show=6ae723aa&confId=54663

Replay:

A webcast replay, as well as a replay in downloadable MP3 format, will be available at investors.eastman.com.

Telephone replay available continuously beginning at approximately 1:00 p.m. Eastern Time, Oct. 27, 2023, through 11:59 p.m. Eastern Time, Nov. 6, 2023, Toll Free at +1 (866) 813-9403, passcode 971032.