ASIX

SEC source: 0001338883-26-000008 · wk-form4_1791493679.xml · nonDerivative · entry 1

Williams Patrick · CIK 0001338883 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,219

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

SEC source: 0001338883-26-000006 · wk-form4_1782940895.xml · nonDerivative · entry 1

Williams Patrick · CIK 0001338883 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,434

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

SEC source: 0001134707-26-000003 · wk-form4_1782305078.xml · nonDerivative · entry 1

O'Brien Dana C. · CIK 0001134707 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,207

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 22, 2027.

SEC source: 0001685376-26-000002 · wk-form4_1782305124.xml · nonDerivative · entry 1

Karran Todd D. · CIK 0001685376 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,946

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 22, 2027.

SEC source: 0001626272-26-000004 · wk-form4_1782305195.xml · nonDerivative · entry 1

Bird Jeffrey J. · CIK 0001626272 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,207

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 22, 2027.

SEC source: 0001785725-26-000004 · wk-form4_1782305110.xml · nonDerivative · entry 1

Lovett Gena C · CIK 0001785725 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,369

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 22, 2027.

SEC source: 0001836184-26-000002 · wk-form4_1782305059.xml · nonDerivative · entry 1

Roberts Daryl · CIK 0001836184 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,207

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 22, 2027.

SEC source: 0001545197-26-000007 · wk-form4_1782305046.xml · nonDerivative · entry 1

Spurlin Sharon · CIK 0001545197 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,953

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 22, 2027.

SEC source: 0001282236-26-000003 · wk-form4_1782305093.xml · nonDerivative · entry 1

NEWMAN DONALD P · CIK 0001282236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,513

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 22, 2027.

SEC source: 0001338883-26-000004 · wk-form4_1782305032.xml · nonDerivative · entry 1

Williams Patrick · CIK 0001338883 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,774

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 22, 2027.

SEC source: 0002130016-26-000004 · wk-form4_1777493361.xml · nonDerivative · entry 2

Day Patrick C. · CIK 0002130016 · SVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,038

F2 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, which will vest in full on April 27, 2029.

SEC source: 0002130016-26-000004 · wk-form4_1777493361.xml · nonDerivative · entry 1

Day Patrick C. · CIK 0002130016 · SVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,019

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date.

SEC source: 0001338883-26-000002 · wk-form4_1775076597.xml · nonDerivative · entry 1

Williams Patrick · CIK 0001338883 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,567

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

F2 · balance_after: Includes an additional 107 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0002059467-26-000004 · wk-form4_1774563486.xml · nonDerivative · entry 1

Ryan Rachael E · CIK 0002059467 · VP, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,513

F1 · shares: Shares withheld to satisfy tax withholding obligations related to Restricted Stock Units that vested on March 24, 2026.

SEC source: 0001806189-26-000004 · wk-form4_1772574972.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,363

F1 · shares: Shares withheld to satisfy tax withholding obligations related to Restricted Stock Units that vested on February 28, 2026.

SEC source: 0001815987-26-000004 · wk-form4_1772574858.xml · nonDerivative · entry 1

SLIETER KELLY · CIK 0001815987 · SVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,029

F1 · shares: Shares withheld to satisfy tax withholding obligations related to Restricted Stock Units that vested on February 28, 2026.

SEC source: 0001684077-26-000004 · wk-form4_1772574753.xml · nonDerivative · entry 1

Kane Erin N · CIK 0001684077 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 623,103

F1 · shares: Shares withheld to satisfy tax withholding obligations related to Restricted Stock Units that vested on February 28, 2026.

SEC source: 0001684047-26-000004 · wk-form4_1772575080.xml · nonDerivative · entry 1

Gramm Christopher · CIK 0001684047 · VP and Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,025

F1 · shares: Shares withheld to satisfy tax withholding obligations related to Restricted Stock Units that vested on February 28, 2026.

SEC source: 0001806189-26-000002 · wk-form4_1772489428.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,371

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date.

SEC source: 0002059467-26-000002 · wk-form4_1772489567.xml · nonDerivative · entry 1

Ryan Rachael E · CIK 0002059467 · VP, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,587

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date.

SEC source: 0001815987-26-000002 · wk-form4_1772489308.xml · nonDerivative · entry 1

SLIETER KELLY · CIK 0001815987 · SVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,453

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date.

SEC source: 0001684077-26-000002 · wk-form4_1772488855.xml · nonDerivative · entry 1

Kane Erin N · CIK 0001684077 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 656,745

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date.

SEC source: 0001684047-26-000002 · wk-form4_1772489047.xml · nonDerivative · entry 1

Gramm Christopher · CIK 0001684047 · VP and Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,649

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date.

SEC source: 0001282236-25-000006 · wk-form4_1766006524.xml · nonDerivative · entry 1

NEWMAN DONALD P · CIK 0001282236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,306

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

F2 · balance_after: Includes an additional 88 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001338883-25-000006 · wk-form4_1766006383.xml · nonDerivative · entry 1

Williams Patrick · CIK 0001338883 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,923

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

F2 · balance_after: Includes an additional 137 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001806189-25-000005 · wk-form4_1759523268.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,265

F1 · shares: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2024.

SEC source: 0001338883-25-000004 · wk-form4_1759352147.xml · nonDerivative · entry 1

Williams Patrick · CIK 0001338883 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,965

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

F2 · balance_after: Includes an additional 95 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001282236-25-000004 · wk-form4_1759352044.xml · nonDerivative · entry 1

NEWMAN DONALD P · CIK 0001282236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,497

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

F2 · balance_after: Includes an additional 53 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001806189-25-000003 · wk-form4_1756931459.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,842

F1 · shares: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2024.

SEC source: 0001673985-25-000121 · wk-form4_1754339484.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,413

F1 · shares: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2024.

SEC source: 0001673985-25-000103 · wk-form4_1751488237.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,984

F1 · shares: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2024.

SEC source: 0001673985-25-000100 · wk-form4_1751402531.xml · nonDerivative · entry 1

Williams Patrick · CIK 0001338883 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,193

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

SEC source: 0001673985-25-000098 · wk-form4_1751402300.xml · nonDerivative · entry 1

NEWMAN DONALD P · CIK 0001282236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,026

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

SEC source: 0001673985-25-000086 · wk-form4_1750451354.xml · nonDerivative · entry 1

Karran Todd D. · CIK 0001685376 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,739

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 18, 2026.

F2 · balance_after: Includes an additional 491 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001673985-25-000096 · wk-form4_1750452652.xml · nonDerivative · entry 1

Williams Patrick · CIK 0001338883 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,641

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 18, 2026.

F2 · balance_after: Includes an additional 76 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001673985-25-000094 · wk-form4_1750452513.xml · nonDerivative · entry 1

Spurlin Sharon · CIK 0001545197 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,746

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 18, 2026.

F2 · balance_after: Includes an additional 242 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001673985-25-000092 · wk-form4_1750452310.xml · nonDerivative · entry 1

Sansone Daniel F · CIK 0001327125 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,288

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 18, 2026.

F2 · balance_after: Includes an additional 106 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001673985-25-000090 · wk-form4_1750452001.xml · nonDerivative · entry 1

NEWMAN DONALD P · CIK 0001282236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,049

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 18, 2026.

F2 · balance_after: Includes an additional 6 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001673985-25-000088 · wk-form4_1750451839.xml · nonDerivative · entry 1

Lovett Gena C · CIK 0001785725 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,162

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which will vest in full on June 18, 2026.

F2 · balance_after: Includes an additional 60 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001628280-25-029395 · wk-form4_1749071980.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,555

F1 · shares: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2024.

SEC source: 0001673985-25-000067 · wk-form4_1746477113.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 33,126

F1 · shares: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2024.

SEC source: 0001673985-25-000034 · wk-form4_1743547010.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 36,363

F1 · shares: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2024.

SEC source: 0001673985-25-000038 · wk-form4_1743630226.xml · nonDerivative · entry 1

Williams Patrick · CIK 0001338883 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,545

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

F2 · balance_after: Includes an additional 73 shares representing stock units credited as dividend equivalents in connection with unvested restricted stock units under the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as amended and restated, and deferred stock units under the AdvanSix Inc. Deferred Compensation Plan, which were acquired in transactions exempt from reporting under Rule 16a-11.

SEC source: 0001673985-25-000036 · wk-form4_1743630060.xml · nonDerivative · entry 1

NEWMAN DONALD P · CIK 0001282236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,023

F1 · shares: Represents the allocation of deferred compensation to the reporting person's deferred stock unit fund account under the AdvanSix Inc. Deferred Compensation Plan. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix Inc. common stock upon distribution.

SEC source: 0001673985-25-000032 · wk-form4_1743021283.xml · nonDerivative · entry 2

Ryan Rachael E · CIK 0002059467 · VP, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,966

F2 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date.

SEC source: 0001673985-25-000032 · wk-form4_1743021283.xml · nonDerivative · entry 1

Ryan Rachael E · CIK 0002059467 · VP, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,644

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in two equal annual installments on the first two anniversaries of the grant date.

SEC source: 0001673985-25-000016 · wk-form4_1741125191.xml · nonDerivative · entry 3

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 40,363

F3 · shares: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2024.

SEC source: 0001673985-25-000016 · wk-form4_1741125191.xml · nonDerivative · entry 2

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,363

F2 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date.

SEC source: 0001673985-25-000016 · wk-form4_1741125191.xml · nonDerivative · entry 1

Kintiroglou Achilles B. · CIK 0001806189 · SVP, General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,507

F1 · shares: Shares withheld to satisfy tax withholding obligations related to Restricted Stock Units that vested on February 28, 2025.

SEC source: 0001673985-25-000014 · wk-form4_1741124958.xml · nonDerivative · entry 1

Manjeshwar Siddharth · CIK 0002038196 · SVP & Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,852

F1 · shares: Grant of restricted stock units pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date.