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shak-202602260001620533false00016205332026-02-262026-02-26

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 February 26, 2026 Date of Report (Date of earliest event reported)

SHAKE SHACK INC.

(Exact name of registrant as specified in its charter)

Delaware001-3682347-1941186 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS Employer Identification No.)

225 Varick Street Suite 301 New York,New York10014 (Address of principal executive offices)(Zip Code)

(646) 747-7200 (Registrant's telephone number, including area code) Not applicable (Former name or former address, if changed since last report)

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:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act

Title of each class Trading symbol(s)Name of each exchange on which registered Class A Common Stock, par value $0.001SHAKNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition. On February 26, 2026, Shake Shack Inc. (the “Company”) issued a press release and shareholder letter announcing its financial results for the fiscal fourth quarter and fiscal year ended December 31, 2025. The full text of the press release and shareholder letter are furnished as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Item 7.01 Regulation FD Disclosure. On February 26, 2026, in addition to issuing a press release, the Company issued a shareholder letter for its fiscal fourth quarter and fiscal year ended December 31, 2025 on its website at investor.shakeshack.com. The shareholder letter is furnished as Exhibit 99.2 to this Current Report on Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits. (d)    Exhibits.

Exhibit NumberExhibit Description 99.1 Press release dated February 26, 2026 announcing financial results for the fiscal fourth quarter and fiscal year ended December 31, 2025. (furnished only)

99.2 Shareholder letter dated February 26, 2026. (furnished only)

104Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document

SIGNATURES

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.

Shake Shack Inc.

(Registrant)

By:/s/ Peter Herpich Peter Herpich Date: February 26, 2026 SVP, Corporate Controller

shak-202601120001620533false00016205332026-01-122026-01-12

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 January 12, 2026 Date of Report (Date of earliest event reported)

SHAKE SHACK INC.

(Exact name of registrant as specified in its charter)

Delaware001-3682347-1941186 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS Employer Identification No.)

225 Varick Street Suite 301 New York,New York10014 (Address of principal executive offices)(Zip Code)

(646) 747-7200 (Registrant's telephone number, including area code) Not applicable (Former name or former address, if changed since last report)

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:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act

Title of each class Trading symbol(s)Name of each exchange on which registered Class A Common Stock, par value $0.001SHAKNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition. On January 12, 2026, Shake Shack Inc. (the “Company”) issued a press release announcing its preliminary unaudited results for the fiscal fourth quarter and fiscal year ended December 31, 2025.

The full text of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or incorporated by reference in any filing under the Securities Act of 1933, as amended (the "Securities Act"), except as shall be expressly set forth by specific reference in such a filing.

Item 7.01 Regulation FD Disclosure. On January 12, 2026, the Company issued a press release as referred to in Item 2.02 above. The Company will present its preliminary unaudited results for the fiscal fourth quarter and fiscal year ended December 31, 2025 at the 28th Annual ICR Conference on January 12, 2026. All interested parties may listen to a simultaneous webcast of the presentation, which will be accessible from the Company’s investor relations website at investor.shakeshack.com. The presentation will begin at 8:30 a.m. ET.

Item 9.01 Financial Statements and Exhibits. (d)    Exhibits.

Exhibit NumberExhibit Description 99.1 Shake Shack Inc. press release dated January 12, 2026

104Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document

SIGNATURES

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.

Shake Shack Inc.

(Registrant)

By:/s/ Alison Sternberg Alison Sternberg Date: January 12, 2026 Head of Investor Relations