Radius Recycling (RDUS) DEFA14A Additional proxy soliciting materials

SCHEDULE 14A INFORMATION

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE

SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant    ☒

Filed by a Party other than the Registrant    ☐

Check the appropriate box:

☐  Preliminary Proxy Statement

☐  Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐  Definitive Proxy Statement

☒  Definitive Additional Materials

☐  Soliciting Material Pursuant to Section 240.14a-12

Schnitzer Steel Industries, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

☒    No fee required.

☐    Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

 (1) Title of each class of securities to which transaction applies:

 (2) Aggregate number of securities to which transaction applies:

 (3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the filing fee is calculated and state how it was determined):

 (4) Proposed maximum aggregate value of transaction:

 (5) Total fee paid:

☐    Fee paid previously with preliminary materials.

☐  Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

 (1) Amount Previously Paid:

 (2) Form, Schedule or Registration Statement No.:

 (3) Filing Party:

 (4) Date Filed:

*** Exercise YourRight to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Shareholder Meeting to Be Held on January 28, 2020.

SCHNITZER STEEL INDUSTRIES, INC.

SCHNITZER STEEL INDUSTRIES, INC.

P.O. BOX 10047

PORTLAND, OREGON 97296

Meeting Information

Meeting Type:        Annual Meeting

For holders as of:   December 2, 2019

Date:    January 28, 2020        Time:    8:00 a.m. Pacific Time

Location:  KOIN Center

Conference Center Room 202

222 SW Columbia Street

Portland, Oregon 97201

Please see the interactive map on our proxy website

You are receiving this communication because you hold shares in the company named above.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online atwww.proxyvote.comor easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain proxy materials and voting instructions.

E88039-P30033

— Before You Vote —

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:

NOTICE AND PROXY STATEMENT         FORM10-K

How to View Online:

Have the information that is printed in the box marked by the arrowg (located on the following page) and visit:www.proxyvote.com.

How to Request and Receive a PAPER orE-MAIL Copy:

If you want to receive a paper ore-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:

1)BY INTERNET:     www.proxyvote.com

2)BY TELEPHONE:1-800-579-1639

3)BYE-MAIL*:         sendmaterial@proxyvote.com

* If requesting materials bye-mail, please send a blanke-mail with the information that is printed in the box marked by the arrowg  (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to thise-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before January 14, 2020 to facilitate timely delivery.

— How To Vote —

Please Choose One of the Following Voting Methods

Vote In Person:If you would like to vote in person at the meeting, bring this Notice, along with appropriate identification, to the KOIN Center on the date of the meeting.

Vote By Internet: To vote now by Internet, go towww.proxyvote.com. Have the information that is printed in the box marked by the arrow g  (located on the following page) available and follow the instructions.

Vote By Mail:You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

E88040-P30033

Voting Items

The Board of Directors Recommends a Vote

FOR all nominees in Proposal 1 and FOR

Proposals 2 and 3.

1. Election of directors

Nominees:

01) Wayland R. Hicks

02) Judith A. Johansen

03) Tamara L. Lundgren

2. To vote on an advisory resolution on executive compensation.

3. To ratify the selection of independent registered public accounting firm.

The proxies may vote in their discretion as to other matters which may come before the meeting.

E88041-P30033

E88042-P30033