EXHIBIT 99.1 PRESS RELEASE OF NORTHWEST BANCSHARES, INC. EARNINGS RELEASE FOR IMMEDIATE RELEASE Investor Contact: Michael Perry, Corporate Development & Strategy (814) 726-2140 Media Contact: Ian Bailey, External Communications (380) 400-2423 Northwest Bancshares, Inc. Announces First Quarter 2025 net income of $43 million, or$0.34 per diluted share Net interest margin expands 45 basis points to 3.87% our 4th consecutive quarter of improved margin All regulatory and shareholder approvals received for Penns ...