Results of Operations and Financial Condition. On August 5, 2026, Shake Shack Inc. (the “Company”) issued a press release and shareholder letter announcing its financial results for the fiscal second quarter ended July 1, 2026. 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…

Director — Christiane Pendarvis: The Board of Directors appointed Christiane Pendarvis as a new director.

Results of Operations and Financial Condition. On May 7, 2026, Shake Shack Inc. (the “Company”) issued a press release and shareholder letter announcing its financial results for the fiscal first quarter ended April 1, 2026. 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 inc…

Chief Financial Officer — Michelle Hook: Shake Shack appointed Michelle Hook as its Chief Financial Officer.

Director — Joshua Silverman: Joshua Silverman is stepping down from the Board of Directors after nine years of service.

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…

principal financial officer (interim) — Peter Herpich: Peter Herpich was designated as the interim principal financial officer following Katherine Fogertey's resignation.

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 referen…

CFO — Katherine Fogertey: The CFO is resigning from her executive role to become a Senior Advisor, representing a genuine departure of a senior officer, though the transition is described as orderly and without dispute.

Regulation FD Disclosure . On November 25, 2025, the Company issued a press release announcing Ms. Fogertey’s resignation . The press release also reiterated the Company’s previously issued guidance for the fourth quarter of 2025 and fiscal year 2025 and its three-year financial targets for fiscal years 2025 through 2027, which are described in such press release. The press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release shall not be deemed “filed” f…

Results of Operations and Financial Condition. On October 30, 2025, Shake Shack Inc. (the “Company”) issued a press release and shareholder letter announcing its financial results for the fiscal third quarter ended September 24, 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 amend…

Results of Operations and Financial Condition. On July 31, 2025, Shake Shack Inc. (the “Company”) issued a press release and shareholder letter announcing its financial results for the fiscal second quarter ended June 25, 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…

Results of Operations and Financial Condition. On May 1, 2025, Shake Shack Inc. (the “Company”) issued a press release and shareholder letter announcing its financial results for the fiscal first quarter ended March 26, 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 in…

Director — Anna Fieler: A director is stepping down from the board without dispute, resulting in a reduction of board size, which is a standard governance change rather than a senior executive loss.

Results of Operations and Financial Condition. On February 20, 2025, 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 25, 2024. 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…

Results of Operations and Financial Condition. On January 13, 2025, Shake Shack Inc. (the “Company”) issued a press release announcing its preliminary unaudited results for the fiscal fourth quarter and fiscal year ended December 25, 2024. 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 referen…

Results of Operations and Financial Condition. On October 30, 2024, Shake Shack Inc. (the “Company”) issued a press release and shareholder letter announcing its financial results for the fiscal third quarter ended September 25, 2024. 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 amend…

Costs Associated with Exit or Disposal Activities. Shack Inc. (the “Company”) regularly evaluates its portfolio of Company-owned and operated Shack restaurants (“Shacks”). As a result, it has identified locations that are underperforming at the Shack level in part due to changes in the trade area and, in some cases, are negatively impacting other Shacks within their proximity by cannibalizing sales. These Shacks are not projected to provide acceptable returns in the foreseeable future. As a r…

Material Impairments. The information set forth in

Results of Operations and Financial Condition. On August 1, 2024, Shake Shack Inc. (the “Company”) issued a press release and shareholder letter announcing its financial results for the fiscal second quarter ended June 26, 2024. 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…

Chief Operations Officer — Stephanie Sentell: The filing announces the appointment of an external candidate as Chief Operations Officer, which is a significant addition to the senior leadership team rather than a departure.

The excerpt describes the results of a shareholder vote on the frequency of executive compensation advisory votes, which is a governance matter rather than a change in management personnel.

Results of Operations and Financial Condition. On May 2, 2024, Shake Shack Inc. (the “Company”) issued a press release and shareholder letter announcing its financial results for the fiscal first quarter ended March 27, 2024. 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 in…

Director — Jonathan Sokoloff: The filing reports the routine resignation of a board director ahead of an annual meeting, with no indication of dispute or executive management loss.

CEO — Robert Lynch: The filing announces the appointment of an external CEO (Robert Lynch) to succeed the outgoing CEO (Randy Garutti), representing a planned succession rather than a sudden loss of a sitting executive.