Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 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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1. Name and Address of Reporting Person * Greiff Andrew S 2. Issuer Name and Ticker or Trading Symbol Ryerson Holding Corp [RYI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP (Last) (First) (Middle) C/O RYERSON HOLDING CORPORATION, 227 W. MONROE ST., 27TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 02/13/2026 (Street) CHICAGO, IL 60606 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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) Code V Amount (A) or (D) Price Common Stock (par value $0.01 per share) 02/13/2026 A 33,975 A (1) 33,975 D

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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 Underlying Securities (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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(2)	02/13/2026		A		18,085		(3)	(3)	Common Stock	18,085	(4)(5)	18,085	D
Restricted Stock Units	(2)	02/13/2026		A		26,844		(3)	(3)	Common Stock	26,844	(4)(6)	26,844	D
Restricted Stock Units	(2)	02/13/2026		A		10,257		(7)	(7)	Common Stock	10,257	(4)(8)	10,257	D
Restricted Stock Units	(2)	02/13/2026		A		10,263		(9)	(9)	Common Stock	10,263	(4)(10)	10,263	D
Restricted Stock Units	(2)	02/13/2026		A		94,254		(11)	(11)	Common Stock	94,254	$ 0	94,254	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Greiff Andrew S C/O RYERSON HOLDING CORPORATION 227 W. MONROE ST., 27TH FLOOR CHICAGO, IL 60606			EVP

Signatures

/s/ Camilla Rykke Merrick, attorney-in-fact		02/13/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The Reporting Person received 33,975 shares of the Issuer's common stock in exchange for 19,863 shares of common stock, without par value, of Olympic Steel, Inc. ("Olympic Steel") in connection with the merger between Olympic Steel and the Issuer (the "Merger") pursuant to the terms of the Agreement and Plan of Merger, dated as of October 28, 2025 (the "Merger Agreement"), by and among the Issuer, Olympic Steel and Crimson MS Corp. In accordance with the Merger Agreement, each share of Olympic Steel's common stock was cancelled and converted into the right to receive 1.7105 shares (the "Exchange Ratio") of the Issuer's common stock, with cash paid in lieu of fractional shares.
(2)	Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer.
(3)	The restricted stock units have fully vested. Vested shares will be delivered to the reporting person upon separation of service.
(4)	Pursuant to the Merger Agreement, at the effective time, the reporting person's Olympic Steel restricted stock units were assumed and converted into restricted stock units with respect to a number of shares of the Issuer's common stock (rounded down to the nearest whole share) determined by multiplying (i) the number of shares of Olympic Steel common stock subject to the Olympic Steel restricted stock unit immediately prior to the effective time of the Merger by (ii) the Exchange Ratio. The converted restricted stock units will otherwise be subject to the same terms and conditions as were applicable to the Olympic Steel restricted stock units prior to the effective time of the Merger.
(5)	The Reporting Person received 18,085 restricted stock units of the Issuer in exchange for restricted stock units with respect to 10,573 shares of Olympic Steel's common stock.
(6)	The Reporting Person received 26,844 restricted stock units of the Issuer in exchange for restricted stock units with respect to 15,694 shares of Olympic Steel's common stock.
(7)	The restricted stock units will vest on December 31, 2026. Vested shares will be delivered to the reporting person within 90 days following the vesting date.
(8)	The Reporting Person received 10,257 restricted stock units of the Issuer in exchange for restricted stock units with respect 5,997 shares of Olympic Steel's common stock.
(9)	The restricted stock units will vest on December 31, 2027. Vested shares will be delivered to the reporting person within 90 days following the vesting date.
(10)	The Reporting Person received 10,263 restricted stock units of the Issuer in exchange for restricted stock units with respect to 6,000 shares of Olympic Steel's common stock.
(11)	The Reporting Person received a one-time sign-on restricted stock unit award in connection with the Merger, which will vest on the third anniversary of the closing date of the Merger. Vested shares will be delivered to the reporting person upon vesting.

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