Company: ZEUS
Filing Date: 2025-10-30
Form Type: 425
Source: 0001193125-25-257069
Chunk: 15

Company: OLYMPIC STEEL INC
Filing Date: 2025-10-30
Form: 425
Chunk 15
---
 Persons              |     | Section 3.19(c)     |
| Sanctions                       |     | Section 3.19(e)     |
| Sarbanes-Oxley Act              |     | Section 3.5(b)      |
| Security Incident               |     | Section 3.18        |
| SERP                            |     | Section 2.5(a)(iii) |
| SERP RSU Cash Amount            |     | Section 2.5(a)(iii) |
| Superior Proposal               |     | Section 5.4(g)(iii) |
| Surviving Corporation           |     | Section 1.1(a)      |
| Takeover Statute                |     | Section 3.3(c)      |
| Trade Control Laws              |     | Section 3.19(e)     |
| Transactions                    |     | Recitals            |
| Union                           |     | Section 3.12(a)     |
| Withholding Agent               |     | Section 2.6         |

(vi)

AGREEMENT AND PLAN OF MERGER

THIS AGREEMENT AND PLAN OF MERGER (this “”) is dated as of October 28, 2025, by and among Olympic Steel, Inc., an
Ohio corporation (the “”), Ryerson Holding Corporation, a Delaware corporation (“”), and Crimson MS Corp., an Ohio corporation and a direct wholly owned subsidiary of Parent (“”).

RECITALS

WHEREAS, Parent, Company and Merger Sub desire to effect the merger of Merger Sub with and into the Company, with the Company continuing as
the surviving corporation and a direct wholly owned subsidiary of Parent (the “”), on the terms and subject to the conditions set forth in this Agreement and in accordance with the Ohio General Corporation Law (as amended,
the “”), pursuant to which, except as otherwise provided in , each share of common stock, without par value, of the Company (the “”) issued and outstanding
immediately prior to the Effective Time shall be converted into the right to receive the Merger Consideration;

WHEREAS, the Boards of
Directors of Parent, the Company and Merger Sub have each approved and declared advisable this Agreement and the Merger and the other transactions contemplated hereby (the “”) and determined that it is fair to,
advisable and in the best interests of their respective companies, and that the shareholders of the Company and the stockholders of Parent adopt this Agreement and consummate the Merger and the other Transactions on