q32021_earningssupplemen

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan T H I R D Q U A R T E R E A R N I N G S S U P P L E M E N T A L N O V E M B E R 4 , 2 0 2 1 1

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan This presentation contains forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995 ("PSLRA"), which are subject to known and unknown risks, uncertainties and other important factors that may cause actual results to be materially different from the statements made herein. All statements other than statements of historical fact included in this presentation are forward-looking statements, including, but not limited to, expected financial results and operating performance for fiscal 2021, including guidance for the fourth quarter of 2021 and the full year of 2021, expected 2021 key financial drivers, expected development targets for fiscal 2021 and fiscal 2022, including expected Shack construction and openings, expected same-Shack sales growth and trends in the Company’s operations, the Company's licensed business, the Company's investment in its employees, the expansion of the Company’s delivery services, the Company’s digital investments and strategies, and statements relating to the effects of COVID-19. Forward-looking statements discuss the Company’s current expectations and projections relating to its financial operations, plans, objectives, future performance and business. You can identify forward-looking statements by the fact that they do not relate strictly to historical or current facts. These statements may include words such as "aim," "anticipate," "believe," "estimate," "expect," "forecast," "future," "intend," "outlook," "potential," "project," "projection," "plan," "seek," "may," "could," "would," "will," "should," "can," "can have," "likely," the negatives thereof and other similar expressions. All forward-looking statements are expressly qualified in their entirety by these cautionary statements. Some of the factors which could cause results to differ materially from the Company’s expectations include the continuing impact of the COVID-19 pandemic, including the potential impact of any COVID-19 variants, our ability to develop and open new Shacks on a timely basis, increased costs or shortages or interruptions in the supply or delivery of our products, increased labor costs or shortages, the management of our digital capabilities and expansion into delivery, our ability to maintain and grow sales at our existing Shacks, and risks relating to the restaurant industry generally. You should evaluate all forward-looking statements made in this presentation in the context of the risks and uncertainties disclosed in our Annual Report on Form 10-K for the fiscal year ended December 30, 2020 as filed with the Securities and Exchange Commission (the "SEC"). All of the Company's SEC filings are available online at www.sec.gov, www.shakeshack.com or upon request from Shake Shack Inc. The forward-looking statements included in this presentation are made only as of the date hereof. The Company undertakes no obligation to publicly update or revise any forward-looking statement as a result of new information, future events or otherwise, except as otherwise required by law. CAUTIONARY NOTE ON FORWARD-LOOKING STATEMENTS 2

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan Q3 2021 RESULTS 1. “Shack system-wide sales” is an operating measure and consists of sales from the Company's domestic Company-operated Shacks, domestic licensed Shacks and international licensed Shacks. The Company does not recognize the sales from licensed Shacks as revenue. Of these amounts, revenue is limited to licensing revenue based on a percentage of sales from domestic and international licensed Shacks, as well as certain up-front fees, such as territory fees and opening fees. 2. "Same-Shack sales" or “SSS” represents Shack sales for the comparable Shack base, which is defined as the number of domestic Company-operated Shacks open for 24 full fiscal months or longer. For Shacks that were temporarily closed, the comparative prior period was also adjusted. 3. To normalize for the 53rd week in fiscal 2020, the compare periods for both 2020 and 2019 have been shifted forward a week from the fiscal calendar in order to show a more like-for-like comparison. See Financial Details section for more information and 2021 SSS comparative periods. 4. "Shack-level operating profit," a non-GAAP measure, is defined as Shack sales less Shack-level operating expenses including food and paper costs, labor and related expenses, other operating expenses and occupancy and related expenses. See Financial Details section for definition and reconciliation to most comparable GAAP measure. 5. “Adjusted EBITDA,” a non-GAAP measure, is defined as EBITDA excluding equity-based compensation expense, deferred lease costs, impairment and loss on disposal of assets, amortization of cloud-based software implementation costs, as well s certain non-recurring items that the Company does not believe directly reflect its core operations and may not be indicative of the Company's recurring business operations. See Financial Details section for definition and reconciliation to most comparable GAAP measure. Total Revenue: $193.9M +48.7% YoY 3 Shack-level operating profit4: $29.6M 15.8% of Shack sales Shack system-wide sales1: $298.6M +53.1% YoY Adjusted EBITDA5: $15.8M 8.2% of Total Revenue Same-Shack Sales versus 20202,3: +24.8% (7.3%) SSS versus 2019

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan Total Revenue $694 Million System-wide Sales $1 Billion System-wide Shack Count 350 as of Q3 2021 Cash Flow from Operations $53 Million $268 $359 $459 $595 $523 $694 2016 2017 2018 2019 2020 Q3 2021 (TTM) $403M $532M $672M $895M $779M $1,047M 2016 2017 2018 2019 2020 Q3 2021 (TTM) 114 159 208 275 311 350 2016 2017 2018 2019 2020 Q3 2021 $54 $71 $85 $90 $37 $53 2016 2017 2018 2019 2020 Q3 2021 (TTM) 4 Profitability Pressures: Realized 330 bps of impact to Shack-level operating profit this quarter from investments in team members and chicken and beef inflation. SSS vs 2019 Improved: SSS for Q3 down ~7% vs 2019, an improvement from Q2 down ~12%, as return to office, events, commuting and tourism drove urban sales. 3Q Sales Outpaced Seasonality Despite COVID and Weather: COVID and weather impacts triggered ~100 days of closures that amounted to ~$850K in lost sales. Even with these headwinds, Shack sales continued to recover. BUSINESS H IGHLIGHTS

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan FISCAL OCTOBER 2021 SNAPSHOT S A L E S O U T PA C E D S E A S O N A L I T Y A N D N E A R LY C L O S E D T H E G A P T O 2 0 1 9 1. To normalize for the 53rd week in fiscal 2020, the compare periods for both 2020 and 2019 have been shifted forward a week from the fiscal calendar in order to show a more like-for-like comparison. See Financial Details section for more information and 2021 SSS comparative periods. Continued Sales Strength: $70K Fiscal October Average Weekly Sales (AWS), outpacing seasonal declines Suburban SSS vs 2019 Momentum: +7% Suburban fiscal October SSS versus 2019, improvement from +1% in fiscal July SSS vs 2019 Improvement: (1%) Fiscal October SSS versus 2019, marking an improvement from (9%) in fiscal July1 5 SSS vs 2020 Recovery: 18% Increase in fiscal October SSS versus 2020 Urban SSS vs 2019 Momentum: (8%) Urban fiscal October SSS versus 2019, improvement from (18%) in fiscal July

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan AWS OUTPACED HISTORICAL SEASONALITY O C T O B E R AV E R A G E W E E K LY S A L E S R O S E M o M $45K $58K $62K $64K $72K $74K $73K $69K $70K $79K $85K $84K $84K $75K $74K AWS 2019 AWS Third Quarter 2020 Fourth Quarter 20201 1. Fourth Quarter 2020 total YoY Shack sales decline excludes impact of the 53rd fiscal accounting week and compares the thirteen weeks from September 24, 2020 through December 23, 2020 to the thirteen weeks from September 26, 2019 through December 25, 2019. The favorable impact of the 53rd week in fiscal 2020 was an incremental Shack sales of $10.7 million. (17%) (3%) 9%Total YoY Shack Sales Growth / (Decline) First Quarter 2021 Second Quarter 2020 (39%) 6 103% Second Quarter 2021 62% Fiscal July 2021 50% Fiscal August 2021 37% Fiscal September 2021 Q3’21 AWS $72K 34% Fiscal October 2021

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan 1. Urban refers to a Shack that is located in a very densely populated city area. These locations tend to be very walkable, close to lots of traffic, shopping, tourism and/or office buildings. Suburban is any Shack that is not classified as urban. 2. To normalize for the 53rd week in fiscal 2020, the compare periods for both 2020 and 2019 have been shifted forward a week from the fiscal calendar in order to show a more like-for-like comparison. See Financial Details section for more information and 2021 SSS comparative periods. 3. For Q4 2020, same-Shack sales excludes the impact of the fourteenth week and compares the thirteen weeks from September 24, 2020 through December 23, 2020 to the thirteen weeks from September 26, 2019 through December 25, 2019. Q3 SSS IMPROVEMENT LED BY BROAD BASED RECOVERY S U B U R B A N S S S G R E W E V E N A S M O R E G U E S T S R E T U R N E D T O U R B A N S H A C K S (57%) (43%) (31%) 27% (38%) (16%) (0%) 10% (49%) (32%) (17%) 18% (25%) (23%) (18%) (16%) (11%) (8%) (4%) (0%) 1% 1% 2% 7% (15%) (12%) (9%) (8%) (5%) (1%) Second Quarter 2020 Third Quarter 2020 Fourth Quarter 2020 First Quarter 2021 Second Quarter 2021 Fiscal July 2021 Fiscal August 2021 Fiscal September 2021 Fiscal October 2021 Urban SSS%Suburban SSS% URBAN/SUBURBAN1 SAME-SHACK SALES VS PRIOR YEAR AND 20192 Total SSS% 3 7 Dotted lines represent 2021 SSS % vs 2019

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan SUBURBAN LEADING DEVELOPMENT ACROSS D IVERSE FORMATS; 45 -50 COMPANY-OPERATED SHACKS IN 2022 F R E E S TA N D I N G B U I L D I N G S | S H O P P I N G C E N T E R S | R E G I O N A L M A L L S | O U T L E T M A L L S 8The Westchester, NY – Regional Mall Food Court Oak Lawn, IL - Freestanding with Shack Track Drive Up Suburban Square, PA – Outdoor Shopping Center Orlando Premium Outlets, FL – Outlet Mall 8

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan SSS PERFORMANCE VARIED ACROSS REGIONS N Y C A N D M A N H AT T A N D R O V E S I G N I F I C A N T I M P R O V E M E N T ; S O U T H E A S T S AW G R E AT E R C O V I D & W E AT H E R P R E S S U R E S I N Q 3 1. The regions of domestic Company-operated Shacks are defined as: NYC, which represents 5 boroughs; Northeast, which represents non-NYC NY, CT, DC, DE, MA, MD, NJ, PA, RI, VA; Southeast, which represents AL, FL, GA, LA, NC, TN, TX; Midwest, which represents IL, KS, KY, MI, MN, MO, OH, WI; and West, which represents AZ, CA, CO, NV, UT, WA. 2. "Same-Shack sales" or “SSS” represents Shack sales for the comparable Shack base, which is defined as the number of domestic Company-operated Shacks open for 24 full fiscal months or longer. For days that Shacks were temporarily closed, the comparative year period was also adjusted. 3. To normalize for the 53rd week in fiscal 2020, the compare periods for both 2020 and 2019 have been shifted forward a week from the fiscal calendar in order to show a more like-for-like comparison. See Financial Details section for more information and 2021 SSS comparative periods. 4. For Q4 2020, same-Shack sales excludes the impact of the fourteenth week and compares the thirteen weeks from September 24, 2020 through December 23, 2020 to the thirteen weeks from September 26, 2019 through December 25, 2019. REGIONAL1 SAME-SHACK SALES 2 VS PRIOR YEAR3 (64%) 29% (69%) 40% (41%) 12% (41%) 20% (47%) 20% (45%) 13% Second Quarter 2020 Third Quarter 2020 Fourth Quarter 2020 First Quarter 2021 Second Quarter 2021 Fiscal July 2021 Fiscal August 2021 Fiscal September 2021 Fiscal October 2021 Northeast Southeast West Midwest NYC (incl. Manhattan) Manhattan 4 9 Fiscal July 2021 vs 2019 Fiscal October 2021 vs 2019 4% 13% (5%) 4% (8%) 5% (9%) 1% (26%) (21%) (33%) (28%)

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan 1. Retention of fiscal January 2021 digital sales levels in fiscal September 2021, when digital sales peaked. 2. Digital sales includes sales made through the Shake Shack mobile application, Shake Shack website, and delivery partners. Does not include sales through Kiosks that are located inside Shacks. Digital sales are normalized to reflect a consistent four-week period. DIGITAL SALES RETENTION HOLDS AT ~80%1 , 2 A D D E D ~ 1 4 % N E W P U R C H A S E R S I N C O M PA N Y - O W N E D A P P & W E B C H A N N E L S Q o Q ; 3 . 2 M T O TA L P U R C H A S E R S A C Q U I R E D S I N C E M A R C H 2 0 2 0 62% 60% 59% 58% 60% 60% 64% 62% 54% 51% 48% 42% 40% 42% 44% 43% Fiscal July 2020 Fiscal August 2020 Fiscal September 2020 Fiscal October 2020 Fiscal November 2020 Fiscal December 2020 Fiscal January 2021 Fiscal February 2021 Fiscal March 2021 Fiscal April 2021 Fiscal May 2021 Fiscal June 2021 Fiscal July 2021 Fiscal August 2021 Fiscal September 2021 Fiscal October 2021 % Indicates digital mix of sales In-Shack Sales $ Digital Sales $ Q3 Digital Mix 60% Q4 Digital Mix 59% 10 Q1 Digital Mix 60% Q2 Digital Mix 47% Q3 Digital Mix 42%

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan DIGITAL HOSPITALITY MEETS GUESTS ONLINE AND IN -SHACK O F F E R I N G A T R U E O M N I C H A N N E L G U E S T E X P E R I E N C E W E B S I T E R E D E S I G N | D I G I TA L & K I O S K | A P P - O N LY LT O L A U N C H Shacks with kiosks generate 75% of sales through kiosk and other digital channels Visit our New Website, Launched Q3 www.shakeshack.com 11

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan CLASS OF 2021 FEATURES NEW, CONVENIENT FORMATS S H A C K T R A C K D R I V E U P W I N D O W S | F I R S T D R I V E T H R U C O M I N G D E C E M B E R 2 0 2 1 Shack Track Drive Up Window at Oak Lawn, IL Drive Thru Rendering 12

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan $35.0M $69.2M $79.1M $77.6M $100.4M $111.6M Total Licensed Sales 1. Total Licensed sales is an operating measure and consists of sales from domestic licensed Shacks and international licensed Shacks. The Company does not recognize the sales from licensed Shacks as revenue. Of these amounts, revenue is limited to licensing revenue based on a percentage of sales from domestic and international licensed Shacks, as well as certain up-front fees, such as territory fees and opening fees. 2. Fourth Quarter 2020 total Licensed sales and YoY decline excludes impact of the 53rd fiscal accounting week. The favorable impact of the 53rd week in fiscal 2020 was an incremental licensed sales of $7.0 million. 13 TOTAL LICENSED SALES ROSE 61% YOY B E N E F I T E D F R O M S T R O N G N E W O P E N I N G S A N D E A S I N G C O V I D R E S T R I C T I O N S Second Quarter 2020 Total YoY Licensed Sales Growth / (Decline) (55%) (20%) Third Quarter 2020 1 (11%) Fourth Quarter 20202 (6%) First Quarter 2021 187% Second Quarter 2021 61% Third Quarter 2021

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan LICENSED BUSINESS BRINGS SHAKE SHACK WORLDWIDE O P E N E D 2 1 S H A C K S T H R O U G H F I S C A L O C T O B E R , W I T H ~ 2 5 E X P E C T E D F Y 2 0 2 1 ; D E V E L O P M E N T P L A N S W I L L I N C R E A S E P R E S E N C E A C R O S S N E W A N D E X I S T I N G M A R K E T S First Shack opened in Monterrey, MexicoFirst Shack opened in Hangzhou, China 14

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan BREAKTHROUGH BRAND MOMENTS IN LTO MARKETING C U L I N A R Y M A R K E T I N G C A M PA I G N S E N G A G E C U S T O M E R S W I T H C O L L A B O R AT I O N S A N D L I M I T E D T I M E O F F E R S 15

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan MARGIN PRESSURE TO CONTINUE FOR FORESEEABLE FUTURE L A B O R I N V E S T M E N T S A N D S U P P LY C H A I N I N F L AT I O N L I K E LY T O P E R S I S T I N T O 2 0 2 2 16 2.2% 14.8% 16.0% 15.0% 19.2% 15.8% 14% 16% Second Quarter 2020 Third Quarter 2020 Fourth Quarter 2020 First Quarter 2021 Second Quarter 2021 QoQ Margin Impacts Third Quarter 2021 Fourth Quarter 2021 Guidance High Low Impacts include ~200 bps from planned wage and retention bonus increases and ~130 bps from chicken and beef inflation. 10bps from other impacts

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan 2021 OUTLOOK 1. Includes approximately $8M of the approximately $9M total Equity-based compensation. These forward-looking projections are subject to known and unknown risks, uncertainties and other important factors that may cause actual results to be materially different from these projections. Factors that may cause such differences include those discussed in the Company's Form 10-K for the fiscal year ended December 30, 2020 and our Cautionary Note On Forward-Looking Statements herein. These forward-looking projections should be reviewed in conjunction with the condensed consolidated financial statements and the section titled “Cautionary Note Regarding Forward-Looking Information” which form the basis of our assumptions used to prepare these forward-looking projections. You should not attribute undue certainty to these projections, and we undertake no obligation to revise or update any forward-looking information, except as required by law. Total revenue Shack sales Licensed revenue Same-Shack sales versus 2020 Shack-level operating profit margin Domestic Company-operated openings Licensed openings (gross) General and administrative expenses Equity-based compensation Depreciation expense Pre-opening costs $193.5M to $200M $187M to $193M $6.5M to $7.0M + mid to high teens 14% to 16% 35 to 38 Approximately 25 $86M to $88M1 Approximately $9M $60M to $63M $13M to $14M Fiscal fourth quarter and fiscal year 2021 guidance is derived from recent trends and does not assume material changes to the current operating environment, inclusive of any potential further COVID impacts. The Company is reaffirming the full year Shack openings and expense guidance provided earlier this year. Q4 2021 Guidance FY 2021 Guidance 17

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan Board of Direct rs M eting 1 20 FINANCIAL DETAILS

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan 2021 METHODOLOGY FOR SAME-SHACK SALES CALCULATION 19 Notes Fiscal Calendar Comparisons Reason for Shifted Weeks: Given the 53rd fiscal week in 2020 the comparison periods for 2021 Same-Shack Sales have been shifted one week forward in both 2019 & 2020 to ensure comparable dates and key holidays fall in similar weeks and, therefore, create a more aligned year-over-year compare How to Read the Fiscal Calendar Comparisons: Fiscal periods are color coded to show comparison weeks from the prior two years For example: P1 W1 2021 (beginning 12/31/20) is compared to P1 W2 2020 (beginning 1/2/20)

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan INCOME STATEMENT 20 (1) As a percentage of Shack sales. Thirteen Weeks Ended Thirty-Nine Weeks Ended September 29, 2021 September 23, 2020 September 29, 2021 September 23, 2020 Shack sales $ 186,972 96.4 % $ 126,288 96.8 % $ 519,110 96.7 % $ 353,855 96.9 % Licensing revenue 6,923 3.6 % 4,113 3.2 % 17,527 3.3 % 11,502 3.1 % TOTAL REVENUE 193,895 100.0 % 130,401 100.0 % 536,637 100.0 % 365,357 100.0 % Shack-level operating expenses(1): Food and paper costs 57,925 31.0 % 37,903 30.0 % 157,472 30.3 % 107,494 30.4 % Labor and related expenses 58,208 31.1 % 37,898 30.0 % 157,221 30.3 % 110,597 31.3 % Other operating expenses 26,613 14.2 % 18,743 14.8 % 74,032 14.3 % 50,826 14.4 % Occupancy and related expenses 14,640 7.8 % 13,093 10.4 % 43,427 8.4 % 37,974 10.7 % General and administrative expenses 20,504 10.6 % 14,962 11.5 % 60,435 11.3 % 45,170 12.4 % Depreciation and amortization expense 15,183 7.8 % 12,376 9.5 % 43,381 8.1 % 36,233 9.9 % Pre-opening costs 2,933 1.5 % 1,822 1.4 % 8,767 1.6 % 5,799 1.6 % Impairment and loss on disposal of assets 535 0.3 % 402 0.3 % 1,262 0.2 % 2,924 0.8 % TOTAL EXPENSES 196,541 101.4 % 137,199 105.2 % 545,997 101.7 % 397,017 108.7 % LOSS FROM OPERATIONS (2,646) (1.4) % (6,798) (5.2) % (9,360) (1.7) % (31,660) (8.7) % Other income, net 18 — % 34 — % 157 — % 335 0.1 % Interest expense (350) (0.2) % (143) (0.1) % (1,224) (0.2) % (697) (0.2) % LOSS BEFORE INCOME TAXES (2,978) (1.5) % (6,907) (5.3) % (10,427) (1.9) % (32,022) (8.8) % Benefit from income taxes (576) (0.3) % (797) (0.6) % (10,665) (2.0) % (6,802) (1.9) % NET INCOME (LOSS) (2,402) (1.2) % (6,110) (4.7) % 238 — % (25,220) (6.9) % Less: Net loss attributable to non-controlling interests (224) (0.1) % (551) (0.4) % (837) (0.2) % (2,490) (0.7) % NET INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC. $ (2,178) (1.1) % $ (5,559) (4.3) % $ 1,075 0.2 % $ (22,730) (6.2) % Earnings (loss) per share of Class A common stock: Basic $ (0.06) $ (0.15) $ 0.03 $ (0.62) Diluted $ (0.06) $ (0.15) $ 0.01 $ (0.62) Weighted-average shares of Class A common stock outstanding: Basic 39,137 38,251 39,066 36,668 Diluted 39,137 38,251 43,448 36,668

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan Shack-Level Operating Profit Shack-level operating profit is defined as Shack sales less Shack-level operating expenses, including Food and paper costs, Labor and related expenses, Other operating expenses and Occupancy and related expenses. "Shack-level operating profit margin," a non-GAAP measure, is defined as Shack sales less Shack-level operating expenses, including food and paper costs, labor and related expenses, other operating expenses and occupancy and related expenses as a percentage of Shack sales. How This Measure Is Useful When used in conjunction with GAAP financial measures, Shack-level operating profit and Shack-level operating profit margin are supplemental measures of operating performance that the Company believes are useful measures to evaluate the performance and profitability of its Shacks. Additionally, Shack-level operating profit and Shack-level operating profit margin are key metrics used internally by management to develop internal budgets and forecasts, as well as assess the performance of its Shacks relative to budget and against prior periods. It is also used to evaluate employee compensation as it serves as a metric in certain performance- based employee bonus arrangements. The Company believes presentation of Shack- level operating profit and Shack-level operating profit margin provides investors with a supplemental view of its operating performance that can provide meaningful insights to the underlying operating performance of the Shacks, as these measures depict the operating results that are directly impacted by the Shacks and exclude items that may not be indicative of, or are unrelated to, the ongoing operations of the Shacks. It may also assist investors to evaluate the Company's performance relative to peers of various sizes and maturities and provides greater transparency with respect to how management evaluates the business, as well as the financial and operational decision- making. Limitations of the Usefulness of this Measure Shack-level operating profit and Shack-level operating profit margin may differ from similarly titled measures used by other companies due to different methods of calculation. Presentation of Shack-level operating profit and Shack-level operating profit margin is not intended to be considered in isolation or as a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP. Shack-level operating profit excludes certain costs, such as General and administrative expenses and Pre-opening costs, which are considered normal, recurring cash operating expenses and are essential to support the operation and development of the Company's Shacks. Therefore, this measure may not provide a complete understanding of the Company's operating results as a whole and Shack-level operating profit and Shack- level operating profit margin should be reviewed in conjunction with the Company’s GAAP financial results. A reconciliation of Shack-level operating profit to operating income, the most directly comparable GAAP financial measure, is set forth on next slide. SHACK-LEVEL OPERATING PROFIT DEFIN IT IONS 21

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan SHACK-LEVEL OPERATING PROFIT 22 Thirteen Weeks Ended Thirty-Nine Weeks Ended (dollar amounts in thousands) September 29 ,2021 September 23, 2020 September 29, 2021 September 23, 2020 Loss from Operations $ (2,646) $ (6,798) $ (9,360) $ (31,660) Less: Licensing revenue 6,923 4,113 17,527 11,502 Add: General and administrative expenses 20,504 14,962 60,435 45,170 Depreciation and amortization expense 15,183 12,376 43,381 36,233 Pre-opening costs 2,933 1,822 8,767 5,799 Impairment and loss on disposal of assets(1) 535 402 1,262 2,924 Shack-level operating profit $ 29,586 $ 18,651 $ 86,958 $ 46,964 Total revenue $ 193,895 $ 130,401 $ 536,637 $ 365,357 Less: Licensing revenue 6,923 4,113 17,527 11,502 Shack sales $ 186,972 $ 126,288 $ 519,110 $ 353,855 Shack-level operating profit margin(2) 15.8 % 14.8 % 16.8 % 13.3 % (1) For the thirty-nine weeks ended September 23, 2020, amount includes a non-cash impairment charge of $1.1 million related to one Shack. (2) As a percentage of Shack sales.

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan EBITDA and Adjusted EBITDA EBITDA is defined as Net income (loss) before interest expense (net of interest income), Income tax expense (benefit) and Depreciation and amortization expense. Adjusted EBITDA is defined as EBITDA (as defined above) excluding equity-based compensation expense, deferred lease cost, Impairment and loss on disposal of assets, amortization of cloud-based software implementation costs, as well as certain non-recurring items that the Company does not believe directly reflect its core operations and may not be indicative of the Company's recurring business operations. “Adjusted EBITDA margin,” a non-GAAP measure, is defined as net income (loss) before interest expense (net of interest income), taxes, depreciation and amortization, which also excludes equity-based compensation expense, deferred lease costs, impairment and loss on disposal of assets, amortization of cloud- based software implementation assets, as well as certain non-recurring and other items that the Company does not believe directly reflect its core operations, as a percentage of revenue. ADJUSTED EBITDA DEFIN IT IONS How These Measures Are Useful When used in conjunction with GAAP financial measures, EBITDA and adjusted EBITDA are supplemental measures of operating performance that the Company believes are useful measures to facilitate comparisons to historical performance and competitors' operating results. Adjusted EBITDA is a key metric used internally by management to develop internal budgets and forecasts and also serves as a metric in its performance-based equity incentive programs and certain bonus arrangements. The Company believes presentation of EBITDA and adjusted EBITDA provides investors with a supplemental view of the Company's operating performance that facilitates analysis and comparisons of its ongoing business operations because they exclude items that may not be indicative of the Company's ongoing operating performance. Limitations of the Usefulness of These Measures EBITDA and adjusted EBITDA may differ from similarly titled measures used by other companies due to different methods of calculation. Presentation of EBITDA and adjusted EBITDA is not intended to be considered in isolation or as a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP. EBITDA and adjusted EBITDA exclude certain normal recurring expenses. Therefore, these measures may not provide a complete understanding of the Company's performance and should be reviewed in conjunction with the GAAP financial measures. A reconciliation of EBITDA and adjusted EBITDA to net income, the most directly comparable GAAP measure, is set forth on next slide. 23

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan Thirteen Weeks Ended Thirty-Nine Weeks Ended (dollar amounts in thousands) September 29, 2021 September 23, 2020 September 29, 2021 September 23, 2020 Net income (loss) $ (2,402) $ (6,110) $ 238 $ (25,220) Depreciation and amortization expense 15,183 12,376 43,381 36,233 Interest expense, net 350 143 1,224 697 Benefit from income taxes (576) (797) (10,665) (6,802) EBITDA 12,555 5,612 34,178 4,908 Equity-based compensation 2,324 1,339 5,963 4,058 Amortization of cloud-based software implementation costs(1) 308 458 935 1,086 Deferred lease costs(2) 108 258 237 407 Impairment and loss on disposal of assets(3) 535 402 1,262 2,924 Debt offering related costs(4) — — 236 — Legal settlement(5) — — 619 — Executive transition costs(6) — 82 179 150 Project Concrete(7) — 8 — (229) Other(8) — — — 285 Adjusted EBITDA $ 15,830 $ 8,159 $ 43,609 $ 13,589 Adjusted EBITDA margin(9) 8.2 % 6.3 % 8.1 % 3.7 % 24 ADJUSTED EBITDA (1) Represents amortization of capitalized implementation costs related to cloud-based software arrangements that are included within General and administrative expenses. (2) Reflects the extent to which lease expense is greater than or less than contractual fixed base rent. (3) Includes losses on disposals of property and equipment in the normal course of business. For the thirty-nine weeks ended September 23, 2020, this amount includes a non-cash impairment charge of $1.1 million related to one Shack. (4) Costs incurred in connection with the Company’s Convertible Notes, issued in March 2021, including consulting and advisory fees. (5) Expense incurred to establish an accrual related to the settlement of a legal matter. (6) Represents fees paid in connection with the search and hiring of certain executive and key management positions. (7) Represents consulting and advisory fees related to the Company's enterprise-wide system upgrade initiative called Project Concrete. (8) Represents incremental expenses incurred related to an inventory adjustment and certain employee-related expenses. (9) Calculated as a percentage of Total revenue, which was $193,895 and $536,637 for the thirteen and thirty-nine weeks ended September 29, 2021, respectively, and $130,401 and $365,357 for the thirteen and thirty-nine weeks ended September 23, 2020, respectively.

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan Adjusted Pro Forma Effective Tax Rate Adjusted pro forma effective tax rate represents the effective tax rate assuming the full exchange of all outstanding SSE Holdings, LLC membership interests ("LLC Interests") for shares of Class A common stock, adjusted for certain non-recurring items that the Company does not believe are directly related to its core operations and may not be indicative of its recurring business operations. How This Measure Is Useful When used in conjunction with GAAP financial measures, adjusted pro forma effective tax rate is a supplemental measure of operating performance that the Company believes is useful to evaluate its performance period over period and relative to its competitors. By assuming the full exchange of all outstanding LLC Interests, the Company believes this measure facilitates comparisons with other companies that have different organizational and tax structures, as well as comparisons period over period because it eliminates the effect of any changes in effective tax rate driven by increases in its ownership of SSE Holdings, which are unrelated to the Company's operating performance, and excludes items that are non-recurring or may not be indicative of ongoing operating performance. ADJUSTED PRO FORMA EFFECTIVE TAX RATE DEFIN IT IONS Limitations of the Usefulness of this Measure Adjusted pro forma effective tax rate may differ from similarly titled measures used by other companies due to different methods of calculation. Presentation of adjusted pro forma effective tax rate should not be considered an alternative to effective tax rate, as determined under GAAP. While this measure is useful in evaluating the Company's performance, it does not account for the effective tax rate attributable to the non-controlling interest holders and therefore does not provide a complete understanding of effective tax rate. Adjusted pro forma effective tax rate should be evaluated in conjunction with GAAP financial results. A reconciliation of adjusted pro forma effective tax rate, the most directly comparable GAAP measure, is set forth on next slide. 25

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan (dollar amounts in thousands) Income Tax Expense (Benefit) Income (Loss) Before Income Taxes Effective Tax Rate Income Tax Expense Income Before Income Taxes Effective Tax Rate As reported (576)$ (2,978)$ 19.3% (10,665)$ (10,427)$ 102.3% Non-GAAP adjustments (before tax): Debt offering related costs - - 236 Revolving Credit Facility amendment-related costs - - 323 Legal settlement - - 619 Tax effect of non-GAAP adjustments and assumed exchange of outstanding LLC Interests (392) (528) - Adjusted pro forma (968)$ (2,978)$ 32.5% (11,193)$ (9,070)$ 123.4% Less: Net tax impact from stock-based compensation 54 8,526 - Adjusted pro forma (excluding windfall tax benefits) (914) (2,978)$ 30.7% (2,667)$ (9,070)$ 29.4% September 29, 2021 September 29, 2021 Thirteen Weeks Ended Fiscal Year Ended 2021 ADJUSTED PRO FORMA EFFECTIVE TAX RATE 26

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan (dollar amounts in thousands) Income Tax Expense (Benefit) Income (Loss) Before Income Taxes Effective Tax Rate Income Tax Expense Income Before Income Taxes Effective Tax Rate As reported (797)$ (6,907)$ 11.5% (6,802)$ (32,022)$ 21.2% Non-GAAP adjustments (before tax): Executive transition costs 82 - 150 Project Concrete 8 - (229) Inventory adjustment and certain employee-related expenses - 285 Tax effect of non-GAAP adjustments and assumed exchange of outstanding LLC Interests (1,608) (3,141) - Adjusted pro forma (2,405)$ (6,817)$ 35.3% (9,943)$ (31,816)$ 31.3% Less: Windfall tax benefits from stock-based compensation 405 997 Adjusted pro forma (excluding windfall tax benefits) (2,000)$ (6,817)$ 29.3% (8,946)$ (31,816)$ 28.1% September 23, 2020 Fiscal Year EndedThirteen Weeks Ended September 23, 2020 2020 ADJUSTED PRO FORMA EFFECTIVE TAX RATE 27

Meeting of the Board of Directors | Q4 2019 2020 Strategic Plan CONTACT INFORMATION INVESTOR CONTACT Melissa Calandruccio, ICR Michelle Michalski, ICR (844) Shack-04 (844-742-2504) investor@shakeshack.com MEDIA CONTACT Kristyn Clark, Shake Shack kclark@shakeshack.com