Company: NWBI
Filing Date: 2025-03-07
Form Type: DEF 14A
Source: 0001193125-25-049104
Chunk: 86

Company: Northwest Bancshares, Inc.
Filing Date: 2025-03-07
Form: DEF 14A
Chunk 86
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 Investor Relations portion of our website, www.northwest.com. We encourage all of our shareholders who have Internet access to receive future proxy materials online rather than through the U.S. mail. By electing to receive our materials electronically, you will be supporting our efforts to add to shareholder value. Other benefits of this service include:

| • |     | Receiving shareholder communications, including the Annual Report to Shareholders and Proxy Statement, as soon as they are available, thus eliminating the need to wait for them to arrive by mail; |

| • |     | Enjoying easier access to convenient online voting; and |

| • |     | Eliminating bulky paper documents from your personal files. |

HOUSEHOLDING OF PROXY STATEMENTS AND ANNUAL REPORTS We intend to deliver only one Annual Report on Form 10-Kand Proxy Statement to multiple registered shareholders sharing the same address unless we receive contrary instructions from one or more of the shareholders. If individual shareholders wish to receive a separate copy of the Annual Report or Proxy Statement they may call or write and request separate copies currently or in the future as follows: Shareholder Relations Northwest Bancshares, Inc. 100 Liberty Street P.O. Box 128 Warren, PA 16365 Phone: (800) 859-1000 Email: shareholderrelations@northwest.com Registered shareholders sharing the same address and receiving multiple copies of Annual Reports or Proxy Statements may request the delivery of a single copy by writing or calling the above address or phone number.

| BY ORDER OF THE BOARD OF DIRECTORS |     |                                             |
|                                    |     | Richard K. Laws                             |
|                                    |     | Chief Legal Counsel and Corporate Secretary |

Columbus, Ohio March 7, 2025 45

| 3 EASTON OVAL SUITE 500 COLUMBUS, OH 43219 |     | During The Meeting - Go to www.virtualshareholdermeeting.com/NWBI2025    You may attend the meeting via the Internet and vote during the meeting. Have the information that is printed in the box marked by the arrow available and follow the instructions.                      |     | VOTE BY INTERNET  Before The Meeting - Go to www.proxyvote.com or scan the QR Barcode above    Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 p.m. Eastern Time on April 16, 2025. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create