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■ ■ ■ ■ SHAKE NEW YORK , NY ( Business Wire ) - August 5 , 2021- Shake Shack Inc. ( " Shake Shack " or the " Company " ) ( NYSE : SHAK ) today reported its financial results for the second quarter ended June 30 , 2021 , a period that included 13 weeks . 00³D Randy Garutti , Chief Executive Officer of Shake Shack , stated , " We remain on the path towards full sales recovery , with total revenue up over 104 % versus the second quarter of 2020. As restrictions relaxed across the country , in - Shack sales rose more than 300 % year on year . The resilience of our business can be seen through the ongoing revenue improvement in our hardest hit urban Shacks , while at the same time we retained the strong business we built in our suburban Shacks . Additionally , even as more of our guests came back to meet us in person , we still grew our digital business double digits and retained approximately 80 % of the digital sales versus fiscal January 2021 , when digital sales peaked . In terms of profitability , Shack level operating margin improved significantly along with sales , however , we do expect margins to moderate in the coming quarters as we make significant investments in our team . Our Shack team members are at the core of all we do and we have committed an additional $ 10 million in raises , incentives and leadership development over the next year . We remain focused on the recovery of both sales and profitability across our Shack base and growth over the long term . Our strategic plan centers on the evolution of our Shack formats through physical and digital transformation with the objective of delivering a seamless , elevated guest experience . " Financial Highlights for the Second Quarter of 2021 : Total revenue in the second quarter of 2021 increased 104.2 % to $ 187.5 million versus the same period last year . Shack sales in the second quarter of 2021 increased 102.7 % to $ 181.5 million versus the same period last year . SHACKⓇ Exhibit 99.1 ■ Shake Shack Announces Second Quarter 2021 Financial Results - Total Revenue Increased 104.2 % , to $ 187.5 million , Supported by > 300 % In - Shack Sales Growth , versus Same Period Last Year ■ - Same - Shack Sales Up 52.7 % Compared to Same Period Last Year Average Weekly Sales Showed Significant Improvement , at $ 72,000 in the Second Quarter and $ 74,000 in Fiscal July , Supported by Stronger Urban and In - Shack Sales ▪ Operating income in the second quarter of 2021 was $ 3.3 million compared to an operating loss of $ 24.1 million in the same period last year . Same - Shack sales ( ¹ ) improved to up 52.7 % in the second quarter of 2021 versus the same period last year . Licensed revenue in the second quarter of 2021 increased 164.2 % to $ 6.0 million versus the same period last year . Shack system - wide sales in the second quarter of 2021 increased 127.7 % to $ 281.9 million , versus the same period last year . ▪ Shack - level operating profit ( 2 ) increased 1,699.7 % in the second quarter of 2021 versus the same period last year , to $ 34.8 million , or 19.2 % of Shack sales . ▪ Net income was $ 2.1 million and adjusted EBITDA ( 2 ) was $ 20.6 million in the second quarter of 2021 , compared to a net loss of $ 18.0 million and adjusted EBITDA of $ ( 8.8 ) million in the same period last year . Net income attributable to Shake Shack Inc. was $ 1.9 million and adjusted pro forma net income ( 2 ) was $ 2.4 million , or $ 0.05 per fully exchanged and diluted share in the second quarter of 2021 , compared to Net loss attributable to Shake Shack Inc. of $ 16.2 million and adjusted pro forma net loss of $ 18.3 million , or $ ( 0.45 ) per fully exchanged and diluted share , in the same period last year . Net system - wide Shack openings , comprised of eight net domestic Company - operated Shacks and ten net licensed Shacks . Cash and cash equivalents and marketable securities on hand was $ 420.2 million as of June 30 , 2021 . ( 1 ) In order to compare like - for - like periods for fiscal 2021 , same - Shack sales will compare the 52 weeks from December 31 , 2020 through December 29 , 2021 to the 52 weeks from January 2 , 2020 through December 30 , 2020. For Q2 2021 , same - Shack sales compares the thirteen weeks from April 1 , 2021 through June 30 , 2021 to the thirteen weeks from April 2 , 2020 through July 1 , 2020. Refer to the materials included in the Supplemental Financial Information , dated August 5 , 2021 , for illustrative monthly and quarterly comparative periods .