UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

Current Report

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

August 17, 2015

Date of Report (date of earliest event reported)

BB&T Corporation

(Exact name of registrant as specified in its charter)

Commission file number: 1-10853

(336) 733-2000

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

On August 17, 2015, BB&T Corporation (“BB&T”) issued a press release announcing the signing of a definitive merger agreement providing for BB&T to acquire National Penn Bancshares, Inc. (“National Penn”) for consideration consisting of BB&T stock and cash. A copy of the press release issued by BB&T announcing the transaction is attached hereto as Exhibit 99.1.

In addition, BB&T intends to provide supplemental information regarding the proposed transaction in connection with presentations to analysts and investors. A copy of the slides that will be made available in connection with the presentations is attached hereto as Exhibit 99.2.

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Forward-Looking Statements

This communication contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 giving National Penn’s and BB&T’s expectations or predictions of future financial or business performance or conditions. Forward-looking statements are typically identified by words such as “believe,” “expect,” “anticipate,” “intend,” “target,” “estimate,” “continue,” “positions,” “prospects” or “potential,” by future conditional verbs such as “will,” “would,” “should,” “could” or “may”, or by variations of such words or by similar expressions. These forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made and we assume no duty to update forward-looking statements. Actual results may differ materially from current projections.

In addition to factors previously disclosed in National Penn’s and BB&T’s reports filed with the U.S. Securities and Exchange Commission (the “SEC”) and those identified elsewhere in this document, the following factors among others, could cause actual results to differ materially from forward-looking statements or historical performance: ability to obtain regulatory approvals and meet other closing conditions to the merger, including approval by National Penn shareholders; delay in closing the merger; difficulties and delays in integrating the National Penn business or fully realizing cost savings and other benefits; business disruption following the merger; changes in asset quality and credit risk; the inability to sustain revenue and earnings growth; changes in interest rates and capital markets; inflation; customer acceptance of BB&T products and services; customer borrowing, repayment, investment and deposit practices; customer disintermediation; the introduction, withdrawal, success and timing of business initiatives; competitive conditions; the inability to realize cost savings or revenues or to implement integration plans and other consequences associated with mergers, acquisitions and divestitures; economic conditions; and the impact, extent and timing of technological changes, capital management activities, and other actions of the Federal Reserve Board and other legislative and regulatory actions and reforms.

Annualized, pro forma, projected and estimated numbers are used for illustrative purpose only, are not forecasts and may not reflect actual results.

Important Additional Information and Where to Find It

In connection with the proposed merger, BB&T will file with the SEC a Registration Statement on Form S-4 that will include a Proxy Statement of National Penn and a Prospectus of BB&T, as well as other relevant documents concerning the proposed transaction. This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. SHAREHOLDERS OF NATIONAL PENN ARE URGED TO READ THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS REGARDING THE MERGER WHEN IT BECOMES AVAILABLE AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION.

A free copy of the Proxy Statement/Prospectus, as well as other filings containing information about BB&T and National Penn, may be obtained at the SEC’s Internet site (http://www.sec.gov). You will also be able to obtain these documents, free of charge, from BB&T at www.bbt.com under the heading “About BB&T” and then under the heading “Investor Relations” and then under “BB&T Corporation’s SEC Filings” or from National Penn at www.nationalpennbancshares.com under the heading “SEC Filings” and then under “Documents”. Copies of the Proxy Statement/Prospectus can also be obtained, free of charge, by directing a request to BB&T Corporation, 150 South Stratford Road, Suite 300, Winston-Salem, North Carolina 27104, Attention: Shareholder Services, Telephone: (336) 733-3065 or to National Penn Bancshares, Inc., 645 Hamilton Street, Suite 1100, Allentown, PA 18101, Attention: Shareholder Services, Telephone: (610) 861-3983.

National Penn and certain of its directors and executive officers may be deemed to be participants in the solicitation of proxies from the shareholders of National Penn in connection with the proposed merger. Information about the directors and executive officers of National Penn and their ownership of National Penn common stock is set forth in the proxy statement for National Penn’s 2015 annual meeting of shareholders, as filed with the SEC on Schedule 14A on March 18, 2015. Additional information regarding the interests of those participants and other persons who may be deemed participants in the transaction may be obtained by reading the Proxy Statement/Prospectus regarding the proposed merger when it becomes available. Free copies of this document may be obtained as described in the preceding paragraph.

(d) Exhibits.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: August 17, 2015

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