Ryerson Holding (RYZ) stake update: Platinum Equity group reports 3.7% position

Rhea-AI Filing Summary

Ryerson Holding Corporation received an updated ownership report from investment entities affiliated with Platinum Equity and Tom Gores on Amendment No. 4 to a Schedule 13G. The group reports beneficial ownership of 1,924,478 shares of Ryerson common stock, representing 3.7% of the outstanding shares, based on 51,898,653 shares outstanding as of July 24, 2026.

RYPS, LLC is the record holder of these shares. Through a chain of ownership and control relationships, Platinum Equity entities and Tom Gores may be deemed to share beneficial ownership, as well as shared voting and dispositive power, over these shares. The filing indicates ownership of 5 percent or less of the class.

Key Figures

Beneficial ownership: 1,924,478 shares Percent of class: 3.7% Shares outstanding: 51,898,653 shares +2 more

5 metrics

Beneficial ownership 1,924,478 shares Common stock of Ryerson Holding Corporation reported by Platinum Equity group

Percent of class 3.7% Portion of Ryerson common stock beneficially owned by reporting persons

Shares outstanding 51,898,653 shares Ryerson common stock outstanding as of July 24, 2026

Shared voting power 1,924,478 shares Shares over which reporting persons have shared power to vote or direct the vote

Shared dispositive power 1,924,478 shares Shares over which reporting persons have shared power to dispose or direct disposition

Key Terms

Schedule 13G/A, beneficial ownership, shared voting power, shared dispositive power, +1 more

5 terms

Schedule 13G/A regulatory

"Amendment No. 4 to a Schedule 13G for Ryerson common stock"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficial ownership financial

"The ownership information presented below represents beneficial ownership of Common Stock"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

shared voting power financial

"Shared Voting Power 1,924,478.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

shared dispositive power financial

"Shared Dispositive Power 1,924,478.00"

CUSIP financial

"CUSIP No.: 783754104"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

FAQ

What stake in Ryerson Holding Corporation (RYZ) do Platinum Equity entities report?

Platinum Equity-affiliated entities and Tom Gores report 1,924,478 shares of Ryerson common stock, representing 3.7% of the outstanding shares, with RYPS, LLC as the record holder and shared voting and dispositive power.

How many Ryerson (RYZ) shares were outstanding for this Schedule 13G/A?

The ownership percentage is calculated using 51,898,653 shares of Ryerson common stock outstanding as of July 24, 2026, as disclosed in Ryerson’s Quarterly Report on Form 10-Q filed on July 29, 2026.

Who is the record holder of the Ryerson (RYZ) shares reported by Platinum Equity?

The filing states that RYPS, LLC is the record holder of the 1,924,478 Ryerson common shares, while Platinum Equity entities and Tom Gores may be deemed to share beneficial ownership through their ownership and control structure.

Does the Platinum Equity group own more than 5% of Ryerson (RYZ)?

No. The Schedule 13G/A indicates ownership of 5 percent or less of Ryerson’s common stock, with a reported beneficial ownership of 3.7% of the outstanding shares for the reporting group.

What voting and dispositive powers do Platinum Equity entities report over Ryerson (RYZ) shares?

Each reporting person lists 0 shares with sole voting or dispositive power and 1,924,478 shares with shared voting and shared dispositive power, reflecting joint control over the reported Ryerson shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/14/2026 - 04:34 PM Accepted by SEC EDGAR 08/14/2026 - 04:30 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 4)

Ryerson Holding Corporation

(Name of Issuer)

Common Stock, par value $0.01 per share

(Title of Class of Securities)

783754104

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 783754104

1

Names of Reporting Persons

Platinum Equity, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,924,478.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,924,478.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,924,478.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.7 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 783754104

1

Names of Reporting Persons

Platinum Equity Investment Holdings, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,924,478.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,924,478.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,924,478.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.7 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 783754104

1

Names of Reporting Persons

Platinum Equity Investment Holdings IC (Cayman), LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,924,478.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,924,478.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,924,478.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.7 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 783754104

1

Names of Reporting Persons

Platinum Equity InvestCo, L.P.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,924,478.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,924,478.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,924,478.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.7 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP Number(s): 783754104

1

Names of Reporting Persons

Platinum Equity Investment Holdings II, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,924,478.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,924,478.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,924,478.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.7 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 783754104

1

Names of Reporting Persons

Platinum Equity Partners II, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,924,478.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,924,478.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,924,478.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.7 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 783754104

1

Names of Reporting Persons

RYPS, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,924,478.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,924,478.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,924,478.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.7 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 783754104

1

Names of Reporting Persons

Tom Gores

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,924,478.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,924,478.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,924,478.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.7 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Ryerson Holding Corporation
(b)	Address of issuer's principal executive offices: 227 W. Monroe St., 27th Floor, Chicago, IL 60606
Item 2.
(a)	Name of person filing: Each of the following is hereinafter individually referred to as a "Reporting Person" and collectively as the "Reporting Persons." This statement is filed on behalf of: Platinum Equity, LLC Platinum Equity Investment Holdings, LLC Platinum Equity Investment Holdings IC (Cayman), LLC Platinum Equity InvestCo, L.P. Platinum Equity Investment Holdings II, LLC Platinum Equity Partners II, LLC RYPS, LLC Tom Gores
(b)	Address or principal business office or, if none, residence: The principal business address of each of the Reporting Persons is 360 North Crescent Drive, Beverly Hills, CA 90210.
(c)	Citizenship: Platinum Equity InvestCo, L.P. is organized under the laws of the Cayman Islands. Tom Gores is a citizen of the United States. Each of the remaining Reporting Persons is organized under the laws of the State of Delaware.
(d)	Title of class of securities: Common Stock, par value $0.01 per share
(e)	CUSIP No.: 783754104
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: The ownership information presented below represents beneficial ownership of Common Stock of the Issuer as of the date of this filing, based upon 51,898,653 shares of Common Stock outstanding as of July 24, 2026, as disclosed in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on July 29, 2026. RYPS, LLC is the record holder of the securities reported herein. Tom Gores is the manager of Platinum Equity, LLC, which is the sole member of Platinum Equity Investment Holdings, LLC, which is the sole member of Platinum Equity Investment Holdings IC (Cayman), LLC which is the general partner of Platinum Equity InvestCo, L.P., which is the sole member of Platinum Equity Investment Holdings II, LLC, which is the senior managing member of Platinum Equity Partners II, LLC, which is the general partner of members controlling a majority of the membership interest of RYPS, LLC. By virtue of these relationships, each of these entities and Mr. Gores may be deemed to share beneficial ownership of the securities held of record by RYPS, LLC.
(b)	Percent of class: See Item 11 of each of the cover pages hereto.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See Item 5 of each of the cover pages hereto.
	(ii) Shared power to vote or to direct the vote: See Item 6 of each of the cover pages hereto.
	(iii) Sole power to dispose or to direct the disposition of: See Item 7 of each of the cover pages hereto.
	(iv) Shared power to dispose or to direct the disposition of: See Item 8 of each of the cover pages hereto.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Platinum Equity, LLC

Signature:	/s/ Mary Ann Sigler
Name/Title:	Mary Ann Sigler / Executive Vice President, Chief Financial Officer and Treasurer
Date:	08/14/2026

Platinum Equity Investment Holdings, LLC

Signature:	/s/ Mary Ann Sigler
Name/Title:	Mary Ann Sigler / Vice President, Secretary and Treasurer
Date:	08/14/2026

Platinum Equity Investment Holdings IC (Cayman), LLC

Signature:	/s/ Mary Ann Sigler
Name/Title:	Mary Ann Sigler / President
Date:	08/14/2026

Platinum Equity InvestCo, L.P.

Signature:	By: Platinum Equity Investment Holdings IC (Cayman), LLC, its general partner, By: /s/ Mary Ann Sigler
Name/Title:	Mary Ann Sigler / President
Date:	08/14/2026

Platinum Equity Investment Holdings II, LLC

Signature:	/s/ Mary Ann Sigler
Name/Title:	Mary Ann Sigler / Secretary
Date:	08/14/2026

Platinum Equity Partners II, LLC

Signature:	/s/ Mary Ann Sigler
Name/Title:	Mary Ann Sigler / Secretary
Date:	08/14/2026

RYPS, LLC

Signature:	/s/ Mary Ann Sigler
Name/Title:	Mary Ann Sigler / Vice President
Date:	08/14/2026

Tom Gores

Signature:	/s/ Mary Ann Sigler
Name/Title:	Mary Ann Sigler / Attorney-in-Fact
Date:	08/14/2026

Exhibit Information

Exhibit No. 24 Power of Attorney (previously filed). Exhibit No. 99 Joint Filing Agreement (previously filed).