SEC FORM 4

SEC FORM 4SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Claussen James J

(Last)

(First)

(Middle)

C/O RYERSON HOLDING CORPORATION

227 W. MONROE ST., 27TH FLOOR

(Street)

CHICAGO

ILLINOIS

60606

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Ryerson Holding Corp [ RYZ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Executive Vice President & CFO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/31/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock (par value $0.01 per share)	03/31/2026		M		4,219	A	$0⁽¹⁾	78,503.3365	D
Common Stock (par value $0.01 per share)	03/31/2026		M		4,125	A	$0⁽¹⁾	82,628.3365	D
Common Stock (par value $0.01 per share)	03/31/2026		M		4,550	A	$0⁽¹⁾	87,178.3365	D
Common Stock (par value $0.01 per share)	03/31/2026		M		11,725	A	$0⁽²⁾	98,903.3365	D
Common Stock (par value $0.01 per share)	03/31/2026		F		10,415⁽¹²⁾	D	$22.48	88,488.3365	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽³⁾	03/31/2026		M			4,219	⁽⁵⁾⁽⁶⁾	⁽⁵⁾⁽⁶⁾	Common Stock	4,219	$0⁽⁴⁾	0	D
Restricted Stock Units	⁽³⁾	03/31/2026		M			4,125	⁽⁷⁾⁽⁸⁾	⁽⁷⁾⁽⁸⁾	Common Stock	4,125	$0⁽⁴⁾	4,125.881	D
Restricted Stock Units	⁽³⁾	03/31/2026		M			4,550	⁽⁹⁾⁽¹⁰⁾	⁽⁹⁾⁽¹⁰⁾	Common Stock	4,550	$0⁽⁴⁾	9,101.098	D
Restricted Stock Units	⁽³⁾	03/31/2026		A		13,200		⁽¹¹⁾	⁽¹¹⁾	Common Stock	13,200	$0	13,200	D

Explanation of Responses:

1. 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.

2. Represents shares received or that will be received in respect of performance-based restricted stock units granted on March 31, 2023. Each performance-based restricted stock unit became vested on March 31, 2026, 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, 2026. Vested shares will be delivered to the reporting person not later than 60 days following the vesting date.

3. Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

4. The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

5. 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, 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.

6. 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.

7. 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 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.

8. 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.

9. On March 31, 2025, the reporting person was granted 13,200 restricted stock units, of which 4,400 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 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.

10. Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2025. 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.

11. On March 31, 2026, 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.

12. 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.

	/s/ Camilla Rykke Merrick, attorney-in-fact	04/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

SEC Form 4 filed by Claussen James J