Eastman Chemical (EMN) 4: Alfonso Humberto P bought 1,162 shares at $63.25 on 2026-10… (Oct 9, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-10-07 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: EASTMAN CHEMICAL CO (EMN) CIK: 0000915389 --- Reporting Owner --- Name: Alfonso Humberto P CIK: 0001406985 Role: Director --- Derivative Transactions --- [Transaction #1] Security: Phantom Stock Units Date: 2026-10-07 | Code: A (Grant or award) Shares: +1,162 | Price: $63.25 Exercise Price: $0.00 Shares Owned After: 58,750 | Ownership: D (Direct) Footnotes: [F1] Phantom Stock Units credited under the Directors' Deferred Compensation Plan, each having a value equal to the market of one share of issuer common stock and payable only in cash after termination of service as a director. [F1] Phantom Stock Units credited under the Directors' Deferred Compensation Plan, each having a value equal to the market of one share of issuer common stock and payable only in cash after termination of service as a director. [F2] Voluntary deferral of a portion of director's retainer fees that would otherwise have been paid in cash. [F2] Voluntary deferral of a portion of director's retainer fees that would otherwise have been paid in cash. [F1] Phantom Stock Units credited under the Directors' Deferred Compensation Plan, each having a value equal to the market of one share of issuer common stock and payable only in cash after termination of service as a director. [F1] Phantom Stock Units credited under the Directors' Deferred Compensation Plan, each having a value equal to the market of one share of issuer common stock and payable only in cash after termination of service as a director. [F1] Phantom Stock Units credited under the Directors' Deferred Compensation Plan, each having a value equal to the market of one share of issuer common stock and payable only in cash after termination of service as a director. [F2] Voluntary deferral of a portion of director's retainer fees that would otherwise have been paid in cash. [F3] Includes dividend equivalents reinvested in additional Phantom Stock Units. [Transaction #2] Security: Phantom Stock Units Date: 2026-10-07 | Code: A (Grant or award) Shares: +480 | Price: $0.00 Exercise Price: $0.00 Shares Owned After: 60,995 | Ownership: D (Direct) Footnotes: [F1] Phantom Stock Units credited under the Directors' Deferred Compensation Plan, each having a value equal to the market of one share of issuer common stock and payable only in cash after termination of service as a director. [F4] Automatic deferral of a portion of director's annual retainer fees into the director's stock account of the Director's Deferred Compensation Plan. [F4] Automatic deferral of a portion of director's annual retainer fees into the director's stock account of the Director's Deferred Compensation Plan. [F1] Phantom Stock Units credited under the Directors' Deferred Compensation Plan, each having a value equal to the market of one share of issuer common stock and payable only in cash after termination of service as a director. [F1] Phantom Stock Units credited under the Directors' Deferred Compensation Plan, each having a value equal to the market of one share of issuer common stock and payable only in cash after termination of service as a director. [F4] Automatic deferral of a portion of director's annual retainer fees into the director's stock account of the Director's Deferred Compensation Plan. [F5] Includes units credited since April 8, 2026, as reinvestment of dividend equivalents for phantom shares deferred under the Directors' Deferred Compensation Plan ("DDCP"), including credits for accrued dividend equivalents that were made to the directors DDCP account on October 7, 2026. --- Footnotes (Complete Index) --- F1: Phantom Stock Units credited under the Directors' Deferred Compensation Plan, each having a value equal to the market of one share of issuer common stock and payable only in cash after termination of service as a director. F2: Voluntary deferral of a portion of director's retainer fees that would otherwise have been paid in cash. F3: Includes dividend equivalents reinvested in additional Phantom Stock Units. F4: Automatic deferral of a portion of director's annual retainer fees into the director's stock account of the Director's Deferred Compensation Plan. F5: Includes units credited since April 8, 2026, as reinvestment of dividend equivalents for phantom shares deferred under the Directors' Deferred Compensation Plan ("DDCP"), including credits for accrued dividend equivalents that were made to the directors DDCP account on October 7, 2026. --- Signature --- /s/ /s/ Mark D. Austin, by Power of Attorney for Humberto P. Alfonso (2026-10-09)