Eastman Schedules Third-Quarter 2026 Financial Results News Release and SEC Form 8-K Filing, Teleconference and Webcast, and Release of Additional Information

Thursday, Oct. 29, 2026

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. 30, 2026

8:00 a.m. Eastern Time

Via listen-only live webcast and teleconference.

• Advance slides and prepared remarks: posted Thursday, Oct. 30, evening at investors.eastman.com

• Webcast: Eastman Q3 2026 Webcast to join live webcast

• Teleconference: Toll-Free dial-in number +1 (833) 461-5787

  Passcode: 652 847 425

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://events.q4inc.com/analyst/652847425?pwd=0MK9YrIb

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. 30, through 11:59 p.m. Eastern Time, Nov. 10, 2026, Toll Free at +1 (833) 309-1852, passcode 652 847 425.