RYZ

SEC source: 0000899140-25-000785 · form4.xml · derivative · entry 1

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,058.206

Underlying: Common Stock · 18.601 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of June 18, 2025. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2026.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of June 18, 2025. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2026.

SEC source: 0000899140-25-000716 · form4.xml · nonDerivative · entry 1

Larson Stephen P. · CIK 0001624556 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,773

SEC source: 0000899140-25-000512 · form4.xml · nonDerivative · entry 1

Leggio Karen Marie · CIK 0002021777 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,749

F1 · shares: Reflects compensation in the form of equity received pursuant to Ryerson's Director Compensation Program. The award vested in full on the grant date.

SEC source: 0000899140-25-000514 · form4.xml · nonDerivative · entry 1

CARRUTHERS COURT D · CIK 0001422164 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,553

F1 · shares: Reflects compensation in the form of equity received pursuant to Ryerson's Director Compensation Program. The award vested in full on the grant date.

SEC source: 0000899140-25-000513 · form4.xml · nonDerivative · entry 1

CALHOUN KIRK K · CIK 0001203721 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,053

F1 · shares: Reflects compensation in the form of equity received pursuant to Ryerson's Director Compensation Program. The award vested in full on the grant date.

SEC source: 0000899140-25-000511 · form4.xml · nonDerivative · entry 1

Larson Stephen P. · CIK 0001624556 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,773

F1 · shares: Reflects compensation in the form of equity received pursuant to Ryerson's Director Compensation Program. The award vested in full on the grant date.

SEC source: 0000899140-25-000510 · form4.xml · nonDerivative · entry 1

Kumbier Michelle · CIK 0001640036 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,622

F1 · shares: Reflects compensation in the form of equity received pursuant to Ryerson's Director Compensation Program. The award vested in full on the grant date.

SEC source: 0000899140-25-000493 · form4.xml · derivative · entry 9

Kannan Molly D · CIK 0001799091 · CAO & Corporate Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,600

Underlying: Common Stock · 6,600 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F11 · derivative.exercise_date: On March 31, 2025, the reporting person was granted 6,600 restricted stock units, of which 2,200 will vest on the first anniversary of the grant date, 2,200 will vest on the second anniversary of the grant date and 2,200 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F11 · derivative.expiration_date: On March 31, 2025, the reporting person was granted 6,600 restricted stock units, of which 2,200 will vest on the first anniversary of the grant date, 2,200 will vest on the second anniversary of the grant date and 2,200 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-25-000493 · form4.xml · derivative · entry 8

Kannan Molly D · CIK 0001799091 · CAO & Corporate Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,989.617

Underlying: Common Stock · 1,994 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F9 · derivative.exercise_date: On March 31, 2024, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 1,925 will vest on the second anniversary of the grant date and 1,925 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F9 · derivative.expiration_date: On March 31, 2024, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 1,925 will vest on the second anniversary of the grant date and 1,925 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000493 · form4.xml · derivative · entry 7

Kannan Molly D · CIK 0001799091 · CAO & Corporate Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,039.605

Underlying: Common Stock · 2,039 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F7 · derivative.exercise_date: On March 31, 2023, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date and 1,925 vested on the second anniversary of the grant date. All 1,925 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F7 · derivative.expiration_date: On March 31, 2023, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date and 1,925 vested on the second anniversary of the grant date. All 1,925 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000493 · form4.xml · derivative · entry 6

Kannan Molly D · CIK 0001799091 · CAO & Corporate Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,785 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F5 · derivative.exercise_date: On March 31, 2022, the reporting person was granted 4,950 restricted stock units, of which 1,650 vested on the first anniversary of the grant date, 1,650 vested on the second anniversary of the grant date and 1,650 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F5 · derivative.expiration_date: On March 31, 2022, the reporting person was granted 4,950 restricted stock units, of which 1,650 vested on the first anniversary of the grant date, 1,650 vested on the second anniversary of the grant date and 1,650 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F14 · balance_after: The number of restricted stock units owned by the reporting person following the reported transaction has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000493 · form4.xml · nonDerivative · entry 5

Kannan Molly D · CIK 0001799091 · CAO & Corporate Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,044.4636

F12 · shares: Represents shares that have been withheld by the Company to satisfy its income tax and withholding remittance obligations in connection with the net settlement of restricted stock units.

SEC source: 0000899140-25-000493 · form4.xml · nonDerivative · entry 4

Kannan Molly D · CIK 0001799091 · CAO & Corporate Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,048.4636

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Represents shares received or that will be received in respect of performance-based restricted stock units granted on March 31, 2022. Each performance-based restricted stock unit became vested on March 31, 2025, which was the later of (i) the third anniversary of the grant date and (ii) the date the compensation committee certified the achievement of the applicable performance objectives in accordance with the underlying award agreement. The compensation committee certified the achievement of the applicable performance objectives on March 31, 2025. Vested shares will be delivered to the reporting person not later than 60 days following the vesting date.

SEC source: 0000899140-25-000493 · form4.xml · nonDerivative · entry 3

Kannan Molly D · CIK 0001799091 · CAO & Corporate Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,998.4636

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000493 · form4.xml · nonDerivative · entry 2

Kannan Molly D · CIK 0001799091 · CAO & Corporate Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,004.4636

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000493 · form4.xml · nonDerivative · entry 1

Kannan Molly D · CIK 0001799091 · CAO & Corporate Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,965.4636

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000495 · form4.xml · derivative · entry 9

Silver Mark S. · CIK 0001627959 · EVP, GC & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,900

Underlying: Common Stock · 9,900 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F11 · derivative.exercise_date: On March 31, 2025, the reporting person was granted 9,900 restricted stock units, of which 3,300 will vest on the first anniversary of the grant date, 3,300 will vest on the second anniversary of the grant date and 3,300 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F11 · derivative.expiration_date: On March 31, 2025, the reporting person was granted 9,900 restricted stock units, of which 3,300 will vest on the first anniversary of the grant date, 3,300 will vest on the second anniversary of the grant date and 3,300 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-25-000495 · form4.xml · derivative · entry 8

Silver Mark S. · CIK 0001627959 · EVP, GC & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,699.021

Underlying: Common Stock · 2,849 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F9 · derivative.exercise_date: On March 31, 2024, the reporting person was granted 8,250 restricted stock units, of which 2,750 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 2,750 will vest on the second anniversary of the grant date and 2,750 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F9 · derivative.expiration_date: On March 31, 2024, the reporting person was granted 8,250 restricted stock units, of which 2,750 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 2,750 will vest on the second anniversary of the grant date and 2,750 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000495 · form4.xml · derivative · entry 7

Silver Mark S. · CIK 0001627959 · EVP, GC & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,913.579

Underlying: Common Stock · 2,913 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F7 · derivative.exercise_date: On March 31, 2023, the reporting person was granted 8,250 restricted stock units, of which 2,750 vested on the first anniversary of the grant date and 2,750 vested on the second anniversary of the grant date. All 2,750 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F7 · derivative.expiration_date: On March 31, 2023, the reporting person was granted 8,250 restricted stock units, of which 2,750 vested on the first anniversary of the grant date and 2,750 vested on the second anniversary of the grant date. All 2,750 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000495 · form4.xml · derivative · entry 6

Silver Mark S. · CIK 0001627959 · EVP, GC & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,677 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F5 · derivative.exercise_date: On March 31, 2022, the reporting person was granted 7,425 restricted stock units, of which 2,475 vested on the first anniversary of the grant date, 2,475 vested on the second anniversary of the grant date and 2,475 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F5 · derivative.expiration_date: On March 31, 2022, the reporting person was granted 7,425 restricted stock units, of which 2,475 vested on the first anniversary of the grant date, 2,475 vested on the second anniversary of the grant date and 2,475 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F14 · balance_after: The number of restricted stock units owned by the reporting person following the reported transaction has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000495 · form4.xml · nonDerivative · entry 5

Silver Mark S. · CIK 0001627959 · EVP, GC & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 121,116

F12 · shares: Represents shares that have been withheld by the Company to satisfy its income tax and withholding remittance obligations in connection with the net settlement of restricted stock units.

SEC source: 0000899140-25-000495 · form4.xml · nonDerivative · entry 4

Silver Mark S. · CIK 0001627959 · EVP, GC & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,178

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Represents shares received or that will be received in respect of performance-based restricted stock units granted on March 31, 2022. Each performance-based restricted stock unit became vested on March 31, 2025, which was the later of (i) the third anniversary of the grant date and (ii) the date the compensation committee certified the achievement of the applicable performance objectives in accordance with the underlying award agreement. The compensation committee certified the achievement of the applicable performance objectives on March 31, 2025. Vested shares will be delivered to the reporting person not later than 60 days following the vesting date.

SEC source: 0000899140-25-000495 · form4.xml · nonDerivative · entry 3

Silver Mark S. · CIK 0001627959 · EVP, GC & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,103

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000495 · form4.xml · nonDerivative · entry 2

Silver Mark S. · CIK 0001627959 · EVP, GC & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,254

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000495 · form4.xml · nonDerivative · entry 1

Silver Mark S. · CIK 0001627959 · EVP, GC & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,341

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000498 · form4.xml · derivative · entry 9

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,600

Underlying: Common Stock · 6,600 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F11 · derivative.exercise_date: On March 31, 2025, the reporting person was granted 6,600 restricted stock units, of which 2,200 will vest on the first anniversary of the grant date, 2,200 will vest on the second anniversary of the grant date and 2,200 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F11 · derivative.expiration_date: On March 31, 2025, the reporting person was granted 6,600 restricted stock units, of which 2,200 will vest on the first anniversary of the grant date, 2,200 will vest on the second anniversary of the grant date and 2,200 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-25-000498 · form4.xml · derivative · entry 8

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,989.617

Underlying: Common Stock · 1,994 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F9 · derivative.exercise_date: On March 31, 2024, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 1,925 will vest on the second anniversary of the grant date and 1,925 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F9 · derivative.expiration_date: On March 31, 2024, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 1,925 will vest on the second anniversary of the grant date and 1,925 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000498 · form4.xml · derivative · entry 7

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,039.605

Underlying: Common Stock · 2,039 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F7 · derivative.exercise_date: On March 31, 2023, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date and 1,925 vested on the second anniversary of the grant date. All 1,925 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F7 · derivative.expiration_date: On March 31, 2023, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date and 1,925 vested on the second anniversary of the grant date. All 1,925 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000498 · form4.xml · derivative · entry 6

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,785 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F5 · derivative.exercise_date: On March 31, 2022, the reporting person was granted 4,950 restricted stock units, of which 1,650 vested on the first anniversary of the grant date, 1,650 vested on the second anniversary of the grant date and 1,650 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F5 · derivative.expiration_date: On March 31, 2022, the reporting person was granted 4,950 restricted stock units, of which 1,650 vested on the first anniversary of the grant date, 1,650 vested on the second anniversary of the grant date and 1,650 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F14 · balance_after: The number of restricted stock units owned by the reporting person following the reported transaction has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000498 · form4.xml · nonDerivative · entry 5

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,444.099

F12 · shares: Represents shares that have been withheld by the Company to satisfy its income tax and withholding remittance obligations in connection with the net settlement of restricted stock units.

SEC source: 0000899140-25-000498 · form4.xml · nonDerivative · entry 4

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,036.099

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Represents shares received or that will be received in respect of performance-based restricted stock units granted on March 31, 2022. Each performance-based restricted stock unit became vested on March 31, 2025, which was the later of (i) the third anniversary of the grant date and (ii) the date the compensation committee certified the achievement of the applicable performance objectives in accordance with the underlying award agreement. The compensation committee certified the achievement of the applicable performance objectives on March 31, 2025. Vested shares will be delivered to the reporting person not later than 60 days following the vesting date.

SEC source: 0000899140-25-000498 · form4.xml · nonDerivative · entry 3

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,986.099

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000498 · form4.xml · nonDerivative · entry 2

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,992.099

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000498 · form4.xml · nonDerivative · entry 1

Orth John E · CIK 0001764564 · EVP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,953.099

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000497 · form4.xml · derivative · entry 9

Sundarrajan Alagu · CIK 0001848292 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,600

Underlying: Common Stock · 6,600 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F11 · derivative.exercise_date: On March 31, 2025, the reporting person was granted 6,600 restricted stock units, of which 2,200 will vest on the first anniversary of the grant date, 2,200 will vest on the second anniversary of the grant date and 2,200 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F11 · derivative.expiration_date: On March 31, 2025, the reporting person was granted 6,600 restricted stock units, of which 2,200 will vest on the first anniversary of the grant date, 2,200 will vest on the second anniversary of the grant date and 2,200 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-25-000497 · form4.xml · derivative · entry 8

Sundarrajan Alagu · CIK 0001848292 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,989.617

Underlying: Common Stock · 1,994 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F9 · derivative.exercise_date: On March 31, 2024, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 1,925 will vest on the second anniversary of the grant date and 1,925 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F9 · derivative.expiration_date: On March 31, 2024, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 1,925 will vest on the second anniversary of the grant date and 1,925 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000497 · form4.xml · derivative · entry 7

Sundarrajan Alagu · CIK 0001848292 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,039.605

Underlying: Common Stock · 2,039 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F7 · derivative.exercise_date: On March 31, 2023, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date and 1,925 vested on the second anniversary of the grant date. All 1,925 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F7 · derivative.expiration_date: On March 31, 2023, the reporting person was granted 5,775 restricted stock units, of which 1,925 vested on the first anniversary of the grant date and 1,925 vested on the second anniversary of the grant date. All 1,925 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000497 · form4.xml · derivative · entry 6

Sundarrajan Alagu · CIK 0001848292 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,785 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F5 · derivative.exercise_date: On March 31, 2022, the reporting person was granted 4,950 restricted stock units, of which 1,650 vested on the first anniversary of the grant date, 1,650 vested on the second anniversary of the grant date and 1,650 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F5 · derivative.expiration_date: On March 31, 2022, the reporting person was granted 4,950 restricted stock units, of which 1,650 vested on the first anniversary of the grant date, 1,650 vested on the second anniversary of the grant date and 1,650 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F14 · balance_after: The number of restricted stock units owned by the reporting person following the reported transaction has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000497 · form4.xml · nonDerivative · entry 5

Sundarrajan Alagu · CIK 0001848292 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,005.4521

F12 · shares: Represents shares that have been withheld by the Company to satisfy its income tax and withholding remittance obligations in connection with the net settlement of restricted stock units.

SEC source: 0000899140-25-000497 · form4.xml · nonDerivative · entry 4

Sundarrajan Alagu · CIK 0001848292 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,052.4521

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Represents shares received or that will be received in respect of performance-based restricted stock units granted on March 31, 2022. Each performance-based restricted stock unit became vested on March 31, 2025, which was the later of (i) the third anniversary of the grant date and (ii) the date the compensation committee certified the achievement of the applicable performance objectives in accordance with the underlying award agreement. The compensation committee certified the achievement of the applicable performance objectives on March 31, 2025. Vested shares will be delivered to the reporting person not later than 60 days following the vesting date.

SEC source: 0000899140-25-000497 · form4.xml · nonDerivative · entry 3

Sundarrajan Alagu · CIK 0001848292 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,002.4521

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000497 · form4.xml · nonDerivative · entry 2

Sundarrajan Alagu · CIK 0001848292 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,008.4521

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000497 · form4.xml · nonDerivative · entry 1

Sundarrajan Alagu · CIK 0001848292 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,969.4521

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000496 · form4.xml · derivative · entry 9

Claussen James J · CIK 0001841035 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,200

Underlying: Common Stock · 13,200 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F11 · derivative.exercise_date: On March 31, 2025, the reporting person was granted 13,200 restricted stock units, of which 4,400 will vest on the first anniversary of the grant date, 4,400 will vest on the second anniversary of the grant date and 4,400 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F11 · derivative.expiration_date: On March 31, 2025, the reporting person was granted 13,200 restricted stock units, of which 4,400 will vest on the first anniversary of the grant date, 4,400 will vest on the second anniversary of the grant date and 4,400 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-25-000496 · form4.xml · derivative · entry 8

Claussen James J · CIK 0001841035 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,978.231

Underlying: Common Stock · 3,989 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F9 · derivative.exercise_date: On March 31, 2024, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 3,850 will vest on the second anniversary of the grant date and 3,850 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F9 · derivative.expiration_date: On March 31, 2024, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 3,850 will vest on the second anniversary of the grant date and 3,850 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2024. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000496 · form4.xml · derivative · entry 7

Claussen James J · CIK 0001841035 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,079.21

Underlying: Common Stock · 4,078 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F7 · derivative.exercise_date: On March 31, 2023, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date and 3,850 vested on the second anniversary of the grant date. All 3,850 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F7 · derivative.expiration_date: On March 31, 2023, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date and 3,850 vested on the second anniversary of the grant date. All 3,850 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000496 · form4.xml · derivative · entry 6

Claussen James J · CIK 0001841035 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,164 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F5 · derivative.exercise_date: On March 31, 2022, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date, 3,850 vested on the second anniversary of the grant date and 3,850 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.exercise_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F5 · derivative.expiration_date: On March 31, 2022, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date, 3,850 vested on the second anniversary of the grant date and 3,850 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F13 · derivative.expiration_date: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.

F14 · balance_after: The number of restricted stock units owned by the reporting person following the reported transaction has been rounded to a whole number. This reflects a change in the reporting methodology.

SEC source: 0000899140-25-000496 · form4.xml · nonDerivative · entry 5

Claussen James J · CIK 0001841035 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,256.3365

F12 · shares: Represents shares that have been withheld by the Company to satisfy its income tax and withholding remittance obligations in connection with the net settlement of restricted stock units.

SEC source: 0000899140-25-000496 · form4.xml · nonDerivative · entry 4

Claussen James J · CIK 0001841035 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 94,454.3365

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Represents shares received or that will be received in respect of performance-based restricted stock units granted on March 31, 2022. Each performance-based restricted stock unit became vested on March 31, 2025, which was the later of (i) the third anniversary of the grant date and (ii) the date the compensation committee certified the achievement of the applicable performance objectives in accordance with the underlying award agreement. The compensation committee certified the achievement of the applicable performance objectives on March 31, 2025. Vested shares will be delivered to the reporting person not later than 60 days following the vesting date.

SEC source: 0000899140-25-000496 · form4.xml · nonDerivative · entry 3

Claussen James J · CIK 0001841035 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,004.3365

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

F13 · price: The number of dividend equivalent rights settled in connection with the vesting of underlying restricted stock units has been rounded to a whole number. This reflects a change in the reporting methodology.