Company: SSUP
Filing Date: 2025-07-09
Form Type: DEFA14A
Source: 0001193125-25-157148
Chunk: 231

Company: SUPERIOR INDUSTRIES INTERNATIONAL INC
Filing Date: 2025-07-09
Form: DEFA14A
Chunk 231
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as the same has been or may be
hereafter amended, restated, or otherwise modified from time to time in accordance with the provisions thereof). Upon and after the Joinder Effective Time, the Joining Party shall be deemed to be “TPG” and a “Party” for all
purposes under the Agreement and with respect to any and all Claims and Interests held by the Joining Party.

2. . Prior to the Joinder Effective Time, the Joining Party (a) shall not be, and shall not be deemed to be, a “Party” for any purposes under the Agreement or with respect to any Claims or Interests held by the Joining Party and
(b) shall not be bound by any of the terms of the Agreement.

3. . With respect to the Claims
and Interests, including the number of shares of Existing Preferred Equity, set forth below its name on the signature page hereto, the Joining Party hereby makes, effective as of the Joinder Effective Time, the representations and warranties of TPG
set forth in the Agreement to each other Party to the Agreement.

4. . This Joinder Agreement shall be governed by and
construed in accordance with the internal laws of the State of New York, without regard to any conflict of laws provisions that would require the application of the law of any other jurisdiction.

[Signature Page Follows]

IN WITNESS WHEREOF, the Joining Party has caused this Joinder to be executed as of the date first written above.

| TPG GROWTH III SIDEWALL, L.P. |     |                                  |
| By:                           |     | TPG Growth Gen Par III,          |
|                               |     | L.P., its general partner        |
| By:                           |     | TPG Growth Gen Par III Advisors, |
|                               |     | LLC, its general partner         |
| By:                           |     | /s/ Martin Davidson              |
| Name:                         |     | Martin Davidson                  |
| Title:                        |     | Chief Accounting Officer         |

Claims: N/A Number of Shares of Existing Preferred Equity: 150,000 Other Interests: N/A Notice Address: [redacted]

| Acknowledged:                          |
| SUPERIOR INDUSTRIES INTERNATIONAL, INC |
| By:                                    |
| Name:                                  |
| Title:                                 |

IN WITNESS WHEREOF, the Joining Party has caused this Joinder to be executed as of the date first written above.

|