PROSPERITY BANCSHARES INC 8-K

What Happened

• Prosperity Bancshares, Inc. announced on January 2, 2026 that it has closed the acquisition of American Bank Holding Corporation under the Agreement and Plan of Merger dated July 17, 2025. Under the transaction, American merged into Prosperity (Prosperity is the surviving corporation), and American Bank, National Association (a wholly‑owned subsidiary of American) merged into Prosperity Bank (the surviving bank).

Key Details

• Merger agreement date: July 17, 2025.
• Effective closing date: January 2, 2026.
• Corporate actions: American Bank Holding Corporation merged into Prosperity Bancshares; American Bank, N.A. merged into Prosperity Bank (Prosperity Bank continues as the surviving bank).
• Press release announcing the closing is attached to the 8‑K as Exhibit 99.1.

Why It Matters

• The filing confirms the legal close of the acquisition and the consolidation of American’s banking operations into Prosperity’s structure. This is a material corporate transaction that will affect Prosperity’s franchise, balance sheet and branch footprint.
• The 8‑K does not include pro forma financials or integration details; investors should watch for future filings and updates that disclose the transaction’s financial impact, integration plans, and any expected changes to earnings, deposits or branch operations.