A. M. Castle & Co. Watch

from 8-K 69 pages In Re: Keystone Tube Company, Llc,1 Et Al., Debtors. Chapter 11 Case No. 17-11330 (Lss) (Joint Administration Requested) Debtors’ Amended Prepackaged Joint Chapter 11 Plan of Reorganization Dated: July 25, 2017 Pachulski Stang Ziehl & Jones Llp Richard M. Pachulski (Ca Bar No. 90073) Jeffrey N. Pomerantz (Ca Bar No. 143717) Maxim B. Litvak (Ca Bar No. 215852) Peter J. Keane (De Bar No. 5503) 919 North Market Street, 17th Floor Wilmington, De 19899-8705 (Courier 19801) Telephone: 302/652-4100 Facsimile: 302/652-4400 E-Mail: Rpachulski@pszjlaw.com Jpomerantz@pszjlaw.com Mlitvak@pszjlaw.com Pkeane@pszjlaw.com Proposed Counsel for the Debtors 1 the Debtors, Together With the Last Four Digits of Each Debtor’s Tax Identification Number, Are: Keystone Tube Company, LLC (8746); A.M. Castle & Co. (9160); Hy-Alloy Steels Company (9160); Keystone Service, Inc. (9160); and Total Plastics, Inc. (3149). the Location of the Debtors’ Headquarters and Service Address Is 1420 Kensington Road, Suite 220, Oak Brook, Il 60523

from 10-K 2 pages Fifth Amendment to the Stock Purchase Agreement

from 10-K 2 pages Fourth Amendment to the Stock Purchase Agreement

from S-4/A 4 pages Third Amendment to the Stock Purchase Agreement

from S-4/A 2 pages Second Amendment to the Stock Purchase Agreement

from 8-K 7 pages This Agreement and Amendment (This “Amendment”) Made the 15th Day of December, 2011, by and Among Paul Sorensen and Jerry Willeford (The “Sellers”), A. M. Castle & Co. (The “Buyer”), Tube Supply, Inc. (The “Company”, and Together With the Sellers and the Buyer, the “Original Parties”) and A. M. Castle & Co. (Canada) Inc., a Wholly-Owned Subsidiary of the Buyer (“Castle Canada”). Whereas the Original Parties Have Entered Into a Stock Purchase Agreement Made as of November 9, 2011 (The “Spa”); and Whereas Tube Supply Canada Ulc (The “Canadian Subsidiary”) Is a Wholly-Owned Subsidiary of the Company;

from 8-K 37 pages Stock Purchase Agreement

from 8-K 50 pages Stock Purchase Agreement Among Transtar Holdings #2, LLC and A.M. Castle & Co. August 12, 2006

from 10-Q 1 page Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002