13D Filing: Marcato Capital Management and Buffalo Wild Wings Inc (BWLD)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

SCHEDULE 13D

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 15)

Buffalo Wild
Wings, Inc.

(Name of Issuer)

Common Stock, no par value

(Title of Class of Securities)

119848109

(CUSIP Number)

Richard T. McGuire III

Marcato Capital Management LP

Four Embarcadero Center, Suite 2100

San Francisco, CA 94111

(415) 796-6350

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

Copies to:

Richard M. Brand

Joshua
A. Apfelroth

Cadwalader, Wickersham & Taft LLP

One World Financial Center

New York, NY 10281

(212)
504-6000

November 27, 2017

(Date of Event Which Requires Filing of this Statement)

If the filing
person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e),
13d-1(f) or 13d-1(g), check the following box.  ☐

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

The information required on the remainder of this cover page
shall not be deemed to be filed for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the
Act (however, see the Notes).

This amendment No. 15 to Schedule 13D (this Amendment No. 15), amends
and supplements the Schedule 13D filed on July 25, 2016 (the Initial 13D and, as amended and supplemented through the date of this Amendment No. 15, collectively, the Schedule 13D) with respect to the Common Stock,
no par value (the Shares), of Buffalo Wild Wings, Inc., a Minnesota corporation (the Issuer). Capitalized terms not defined in this Amendment No. 15 shall have the meaning ascribed to them in the Schedule 13D.

The information set forth in response to each separate Item below shall be deemed to be a response to all Items where such information is
relevant.

Item 4 of the Schedule 13D is hereby supplementally amended as
follows:

On November 27, 2017, Arbys Restaurant Group, Inc. (Parent), IB Merger Sub I Corporation, a wholly-owned
subsidiary of Parent (Merger Sub), and the Issuer entered into an Agreement and Plan of Merger (the Merger Agreement), pursuant to which Merger Sub has agreed to merge with and into the Issuer with the Issuer continuing as
the surviving corporation, upon the terms and conditions set forth therein (the Merger). Under the terms of the Merger Agreement, upon consummation of the Merger, each Share will be converted into the right to receive $157 per Share in
cash.

On November 27, 2017, as a condition to Parents willingness to enter into the Merger Agreement, Marcato, Marcato
International and Marcato Special Opportunities Fund (collectively, the Marcato Parties) entered into a voting agreement (the Voting Agreement) with Parent.

Pursuant to the terms of the Voting Agreement, the Marcato Parties agreed to vote the Shares they beneficially own in favor of adoption and
approval of the Merger Agreement and the terms thereof, the Merger and each of the other transactions contemplated thereby and any other action reasonably requested by Parent in furtherance thereof. The Marcato Parties also agreed to vote against
(i) the approval of any alternative takeover proposal or the adoption of any agreement relating to any alternative takeover proposal and (ii) any amendment of the Issuers articles of incorporation or the Issuers by-laws or any other action, agreement, proposal or transaction involving the Issuer or any of its subsidiaries which amendment or other action, agreement, proposal or transaction would, or would reasonably be
expected to, result in a breach of any covenant, representation or warranty or any other obligation or agreement of the Issuer contained in the Merger Agreement or of any Marcato Party contained in the Voting Agreement or would, or would reasonably
be expected to, in any manner compete with, interfere with, impede, frustrate, prevent, burden, delay or nullify the Merger, the Merger Agreement or any of the other transactions contemplated by the Merger Agreement.

During the term of the Voting Agreement, each Marcato Party is subject to certain restrictions, as described in the Voting Agreement,
including restrictions on their or their representatives ability to (a) solicit, initiate, knowingly facilitate or knowingly encourage the submission or announcement of any inquiries, proposals or offers that constitute or would
reasonably be expected to lead to any alternative takeover proposal, (b) engage in any discussions or negotiations with respect to any inquiry, proposal or offer that constitutes or would reasonably be expected to lead to an alternative
takeover proposal, (c) otherwise knowingly cooperate with or assist or participate in, or knowingly facilitate, any such inquiries, proposals, offers, discussions or negotiations or (d) resolve or agree to do any of the foregoing.

The Voting Agreement further provides that each Marcato Party is entering into the Voting Agreement solely in such Marcato Partys
capacity as the record holder or beneficial owner of such Marcato Partys Shares and nothing in the Voting Agreement shall limit or restrict such Marcato Party or any affiliate thereof from taking any action in such Marcato Partys or
affiliates capacity as a director or officer of the Issuer or otherwise affect any action or decision by such Marcato Party or affiliate thereof in such Marcato Partys or affiliates capacity as a director or officer of the Issuer.

The Voting Agreement will terminate upon the earliest to occur of (a) the consummation of the Merger, (b) the termination or
amendment (in a manner adverse to the stockholders of the Issuer) of the Merger Agreement in accordance with its terms and (c) the termination of the Voting Agreement by the mutual written agreement of the parties thereto.

Item 5 of the Schedule 13D is hereby amended and
restated in its entirety as follows:

(a) As of the date hereof, (i) Marcato, and Mr. McGuire may each be deemed to be the
beneficial owner of 992,399 Shares (the Marcato Shares), constituting approximately 6.4% of the Shares, (ii) Marcato International may be deemed to be the beneficial owner of 950,699 Shares, constituting approximately 6.1% of the
Shares and (iii) Marcato Special Opportunities Fund may be deemed to be the beneficial owner of 41,700 Shares, constituting approximately 0.3% of the Shares, each based upon 15,512,253 Shares outstanding as of October 18, 2017, as reported
in the Issuers Quarterly Report on Form 10-Q for the quarter ended September 24, 2017.

(b) Marcato International may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the
disposition of) 950,699 Shares and, therefore, may be deemed to be the beneficial owner of such Shares. Marcato Special Opportunities Fund may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or
direct the disposition of) 41,700 Shares and, therefore, may be deemed to be the beneficial owner of such Shares. Marcato, as the investment manager of Marcato International and Marcato Special Opportunities Fund, may be deemed to have the shared
power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) the Marcato Shares and, therefore, may be deemed to be the beneficial owner of such Shares. By virtue of Mr. McGuires position as the
managing partner of Marcato, Mr. McGuire may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) the Marcato Shares and, therefore, may be deemed to be the beneficial
owner of the such Shares. Each of the Reporting Persons disclaims beneficial ownership of any Shares owned by Parent or any affiliate of Parent and each of the Reporting Persons hereby expressly disclaims membership in a group under the
Securities Exchange Act of 1934 with Parent or any affiliate of Parent with respect to any securities of the Issuer.

(c) There have been
no transactions by the Reporting Persons in the securities of the Issuer in the past sixty days.

(d) The limited partners of (or
investors in) Marcato International and Marcato Special Opportunities Fund, or their respective subsidiaries or affiliated entities, for which Marcato or its affiliates acts as general partner and/or investment manager have the right to participate
in the receipt of dividends from, or proceeds from the sale of, the Shares held for the accounts of their respective funds in accordance with their respective limited partnership interests (or investment percentages) in their respective funds.

Item 6 of the Schedule 13D is hereby supplementally amended as follows:

The information set forth in Item 4 is incorporated herein by reference.

Exhibit A: Joint Filing Agreement*

Exhibit B: Schedule of Transactions in Shares*

Exhibit
C: Letter, dated August 17, 2016*

Exhibit D: Presentation, dated August 25, 2016*

Exhibit E: Schedule of Transactions in Shares*

Exhibit F:
Joinder Agreement*

Exhibit G: Presentation, dated October 5, 2016*

Exhibit H: Schedule of Transactions in Shares*

Exhibit I:
Letter, dated October 13, 2016*

Exhibit J: Letter, dated December 6, 2016*

Exhibit K: Schedule of Transactions in Shares*

Exhibit L:
Notice, dated February 6, 2017*

Exhibit M: Press Release, dated February 6, 2017*

Exhibit N: Form of Engagement and Indemnification Agreement*

Exhibit O: Schedule of Transactions in Shares*

Exhibit P: Joint
Filing Agreement, dated February 16, 2017*

Exhibit Q: Press Release and Letter, dated April 20, 2017*

Exhibit R: Presentation, dated April 20, 2017*

Exhibit S:
Schedule of Transactions in Shares*

Exhibit T: Schedule of Transactions in Shares*

Exhibit U: Press Release, dated June 2, 2017*

Exhibit V:
Schedule of Transactions in Shares*

Exhibit W: Schedule of Transactions in Shares*

Exhibit X: Voting Agreement, dated November 27, 2017

After reasonable inquiry and to the best of my knowledge and belief, the undersigned
certifies that the information set forth in this statement is true, complete and correct.

Dated: November 28, 2017