SCHEDULE 13D/A

SCHNEIDER NATIONAL INC

Class B Common Stock, no par value per share · CUSIP: 80689H102

Event date: 2026-01-15

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Zimmermann Kathleen M.Reported CIK 0001701082

  Shares: 19,663,754.00 · Class: 18.1%

• Donald J. Schneider Childrens Trust #2 f/b/o Kathleen M. Zimmermann

  Shares: 8,400,000.00 · Class: 8.3%

• Donald J. Schneider 2000 Trust f/b/o Kathleen M. Zimmermann

  Shares: 9,367,085.00 · Class: 9.4%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.