Edward J. Lehner - 18 Dec 2025 Form 4 Insider Report for Ryerson Holding Corp (RYI)

Role: President & CEO, Director
Signature: /s/ Camilla Rykke Merrick, attorney-in-fact
Issuer symbol: RYI
Transactions as of: 18 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 22 Dec 2025, 16:16:50 UTC
Previous filing: 22 Sep 2025
Next filing: 23 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Lehner Edward J.	President & CEO, Director	C/O RYERSON HOLDING CORPORATION, 227 W. MONROE ST., 27TH FLOOR, CHICAGO	/s/ Camilla Rykke Merrick, attorney-in-fact	22 Dec 2025	0001614103

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	RYI	Restricted Stock Units	Award	$0	+94	+0.72%	$0.000000	13,135	18 Dec 2025	Common Stock	94		Direct	F1, F2, F3
transaction	RYI	Restricted Stock Units	Award	$0	+185	+0.72%	$0.000000	25,692	18 Dec 2025	Common Stock	185		Direct	F1, F2, F4
transaction	RYI	Restricted Stock Units	Award	$0	+268	+0.72%	$0.000000	37,194	18 Dec 2025	Common Stock	268		Direct	F1, F2, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").
F2	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	The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of December 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.
F4	The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2024 and outstanding as of December 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 and March 31, 2027.
F5	The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2025 and outstanding as of December 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, March 31, 2027 and March 31, 2028.