10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)
☑	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 23, 2020

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______ to ______

Commission file number: 001-36823

SHAKE SHACK INC.

(Exact name of registrant as specified in its charter)

Delaware			47-1941186
(State or other jurisdiction of incorporation or organization)			(IRS Employer Identification No.)
225 Varick Street
Suite 301
	New York,	New York	10014
	(Address of principal executive offices)		(Zip Code)

(646) 747-7200

(Registrant's telephone number, including area code)

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 $0.001	SHAK	New York Stock Exchange

Indicate by check mark if the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☑ o No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted and posted pursuant to Rule-405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). þ Yes o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer	☑	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		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. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). ☐ Yes ☑ No

As of October 21, 2020, there were 38,329,552 shares of Class A common stock outstanding and 3,112,002 shares of Class B common stock outstanding.

SHAKE SHACK INC.

TABLE OF CONTENTS

Cautionary Note Regarding Forward-Looking Information			1
Part I			2
	Item 1.	Financial Statements (Unaudited)	2
	Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	28
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	46
	Item 4.	Controls and Procedures	46
Part II			48
	Item 1.	Legal Proceedings	48
	Item 1A.	Risk Factors	48
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	48
	Item 3.	Defaults Upon Senior Securities	48
	Item 4.	Mine Safety Disclosures	48
	Item 5.	Other Information	48
	Item 6.	Exhibits	49
SIGNATURES			50

Cautionary Note Regarding Forward-Looking Information

This Quarterly Report on Form 10-Q ("Form 10-Q") 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 are forward-looking statements. Forward-looking statements discuss our current expectations and projections relating to our financial position, results of 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. You should evaluate all forward-looking statements made in this Form 10-Q in the context of the risks and uncertainties disclosed in our Annual Report on Form 10-K for the fiscal year ended December 25, 2019 and Quarterly Report on Form 10-Q for the quarterly period ended June 24, 2020 as filed with the Securities and Exchange Commission (the "SEC").

The forward-looking statements included in this Form 10-Q are made only as of the date hereof. We undertake 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.

Shake Shack Inc. Form 10-Q | 1

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements (Unaudited).

	Page
Condensed Consolidated Balance Sheets	3
Condensed Consolidated Statements of Income (Loss)	4
Condensed Consolidated Statements of Comprehensive Income (Loss)	5
Condensed Consolidated Statements of Stockholders' Equity	6
Condensed Consolidated Statements of Cash Flows	8
Notes to Condensed Consolidated Financial Statements	9

2 | Shake Shack Inc. Form 10-Q

SHAKE SHACK INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(UNAUDITED)

(in thousands, except share and per share amounts)

		September 23 2020		December 25 2019
ASSETS
Current assets:
	Cash and cash equivalents	$	174,883	$	37,099
	Marketable securities	16,879		36,508
	Accounts receivable	7,729		9,970
	Inventories	2,383		2,221
	Prepaid expenses and other current assets	2,636		1,877
	Total current assets	204,510		87,675
Property and equipment, net		326,526		314,862
Operating lease assets		305,133		274,426
Deferred income taxes, net		288,995		279,817
Other assets		12,038		11,488
TOTAL ASSETS		$	1,137,202	$	968,268
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
	Accounts payable	$	22,354	$	14,300
	Accrued expenses	25,236		24,140
	Accrued wages and related liabilities	9,237		11,451
	Operating lease liabilities, current	34,859		30,002
	Other current liabilities	12,580		19,499
	Total current liabilities	104,266		99,392
Long-term operating lease liabilities		336,149		304,914
Liabilities under tax receivable agreement, net of current portion		228,197		226,649
Other long-term liabilities		21,828		15,328
Total liabilities		690,440		646,283
Commitments and contingencies (Note 15)
Stockholders' equity:
	Preferred stock, no par value—10,000,000 shares authorized; none issued and outstanding as of September 23, 2020 and December 25, 2019.	—		—
	Class A common stock, $0.001 par value—200,000,000 shares authorized; 38,280,102 and 34,417,302 shares issued and outstanding as of September 23, 2020 and December 25, 2019, respectively.	38		35
	Class B common stock, $0.001 par value—35,000,000 shares authorized; 3,112,002 and 3,145,197 shares issued and outstanding as of September 23, 2020 and December 25, 2019, respectively.	3		3
	Additional paid-in capital	386,011		244,410
	Retained earnings	31,637		54,367
	Accumulated other comprehensive income	3		2
	Total stockholders' equity attributable to Shake Shack Inc.	417,692		298,817
Non-controlling interests		29,070		23,168
Total equity		446,762		321,985
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		$	1,137,202	$	968,268

See accompanying Notes to Condensed Consolidated Financial Statements.

Shake Shack Inc. Form 10-Q | 3

SHAKE SHACK INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)

(UNAUDITED)

(in thousands, except per share amounts)

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Shack sales		$	126,288	$	152,366	$	353,855	$	428,811
Licensing revenue		4,113		5,396		11,502		14,273
TOTAL REVENUE		130,401		157,762		365,357		443,084
Shack-level operating expenses:
	Food and paper costs	37,903		44,159		107,494		125,049
	Labor and related expenses	37,898		41,601		110,597		118,891
	Other operating expenses	18,743		18,947		50,826		51,270
	Occupancy and related expenses	13,093		12,537		37,974		35,309
General and administrative expenses		14,962		17,090		45,170		46,420
Depreciation expense		12,376		10,474		36,233		29,239
Pre-opening costs		1,822		4,487		5,799		10,678
Impairment and loss on disposal of assets		402		303		2,924		1,031
TOTAL EXPENSES		137,199		149,598		397,017		417,887
OPERATING INCOME (LOSS)		(6,798)		8,164		(31,660)		25,197
Other income, net		34		248		335		1,259
Interest expense		(143)		(133)		(697)		(302)
INCOME (LOSS) BEFORE INCOME TAXES		(6,907)		8,279		(32,022)		26,154
Benefit from income taxes		(797)		(3,144)		(6,802)		(47)
NET INCOME (LOSS)		(6,110)		11,423		(25,220)		26,201
Less: net income (loss) attributable to non-controlling interests		(551)		1,079		(2,490)		4,281
NET INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC.		$	(5,559)	$	10,344	$	(22,730)	$	21,920
Earnings (loss) per share of Class A common stock:
	Basic	$	(0.15)	$	0.32	$	(0.62)	$	0.72
	Diluted	$	(0.15)	$	0.31	$	(0.62)	$	0.70
Weighted-average shares of Class A common stock outstanding:
	Basic	38,251		31,961		36,668		30,549
	Diluted	38,251		32,916		36,668		31,441

See accompanying Notes to Condensed Consolidated Financial Statements.

4 | Shake Shack Inc. Form 10-Q

SHAKE SHACK INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(UNAUDITED)

(in thousands)

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
			September 23 2020		September 25 2019		September 23 2020		September 25 2019
Net income (loss)			$	(6,110)	$	11,423	$	(25,220)	$	26,201
Other comprehensive income, net of tax(1):
	Change in foreign currency translation adjustment		—		—		1		—
		Net change	—		—		1		—
OTHER COMPREHENSIVE INCOME			—		—		1		—
COMPREHENSIVE INCOME (LOSS)			(6,110)		11,423		(25,219)		26,201
Less: comprehensive income (loss) attributable to non-controlling interest			(551)		1,079		(2,490)		4,281
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC.			$	(5,559)	$	10,344	$	(22,729)	$	21,920

(1) Net of tax expense of $0 for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

See accompanying Notes to Condensed Consolidated Financial Statements.

Shake Shack Inc. Form 10-Q | 5

SHAKE SHACK INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

(UNAUDITED)

(in thousands, except share amounts)

For the Thirteen Weeks Ended September 23, 2020 and September 25, 2019
		Class A Common Stock			Class B Common Stock			Additional Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income		Non- Controlling Interest		Total Equity
		Shares	Amount		Shares	Amount
BALANCE, JUNE 24, 2020		38,236,538	$	38	3,117,002	$	3	$	384,338	$	37,196	$	3	$	29,707	$	451,285
	Net loss									(5,559)				(551)		(6,110)
	Other comprehensive income:
	Net change in foreign currency translation adjustment											—		—		—
	Equity-based compensation							1,346								1,346
	Activity under stock compensation plans	38,564						367						122		489
	Redemption of LLC Interests	5,000			(5,000)			44						(44)		—
	Establishment of liabilities under tax receivable agreement and related changes to deferred tax assets associated with increases in tax basis							(84)								(84)
	Issuance of Class A common stock sold in equity offerings, net of underwriting discounts, commissions and offering costs	—	—					—						—		—
	Distributions paid to non-controlling interest holders													(164)		(164)
BALANCE, SEPTEMBER 23, 2020		38,280,102	$	38	3,112,002	$	3	$	386,011	$	31,637	$	3	$	29,070	$	446,762
BALANCE, JUNE 26, 2019		30,557,685	$	31	6,731,209	$	7	$	208,866	$	46,116	$	—	$	45,653	$	300,673
	Cumulative effect of accounting changes									—				—		—
	Net income									10,344				1,079		11,423
	Equity-based compensation							1,908								1,908
	Activity under stock compensation plans	172,403	—					1,786						1,839		3,625
	Redemption of LLC Interests	231,599	—		(231,599)	—		1,635						(1,635)		—
	Effect of Gramercy Tavern Merger	2,690,263	3		(2,690,263)	(3)		19,218						(19,218)
	Establishment of liabilities under tax receivable agreement and related changes to deferred tax assets associated with increases in tax basis							705								705
	Distribution to non-controlling interest owners													(39)		(39)
BALANCE, SEPTEMBER 25, 2019		33,651,950	$	34	3,809,347	$	4	$	234,118	$	56,460	$	—	$	27,679	$	318,295

6 | Shake Shack Inc. Form 10-Q

For the Thirty-Nine Weeks Ended September 23, 2020 and September 25, 2019
		Class A Common Stock			Class B Common Stock			Additional Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income		Non- Controlling Interest		Total Equity
		Shares	Amount		Shares	Amount
BALANCE, DECEMBER 25, 2019		34,417,302	$	35	3,145,197	$	3	$	244,410	$	54,367	$	2	$	23,168	$	321,985
	Net loss									(22,730)				(2,490)		(25,220)
	Other comprehensive income:
	Net change in foreign currency translation adjustment											1		—		1
	Equity-based compensation							4,088								4,088
	Activity under stock compensation plans	180,068						627						(167)		460
	Redemption of LLC Interests	33,195			(33,195)			239						(239)		—
	Establishment of liabilities under tax receivable agreement and related changes to deferred tax assets associated with increases in tax basis							929								929
	Issuance of Class A common stock sold in equity offerings, net of underwriting discounts, commissions and offering costs	3,649,537	3					135,718						9,276		144,997
	Distributions paid to non-controlling interest holders													(478)		(478)
BALANCE, SEPTEMBER 23, 2020		38,280,102	$	38	3,112,002	$	3	$	386,011	$	31,637	$	3	$	29,070	$	446,762
BALANCE, DECEMBER 26, 2018		29,520,833	$	30	7,557,347	$	8	$	195,633	$	30,404	$	—	$	47,380	$	273,455
	Cumulative effect of accounting changes									4,136				1,059		5,195
	Net income									21,920				4,281		26,201
	Equity-based compensation							5,918								5,918
	Activity under stock compensation plans	383,117	—					2,718						2,998		5,716
	Redemption of LLC Interests	1,057,737	1		(1,057,737)	(1)		7,115						(7,115)		—
	Effect of Gramercy Tavern Merger	2,690,263	3		(2,690,263)	(3)		19,218						(19,218)		—
	Establishment of liabilities under tax receivable agreement and related changes to deferred tax assets associated with increases in tax basis							3,516								3,516
	Distributions paid to non-controlling interest holders													(1,706)		(1,706)
BALANCE, SEPTEMBER 25, 2019		33,651,950	$	34	3,809,347	$	4	$	234,118	$	56,460	$	—	$	27,679	$	318,295

See accompanying Notes to Condensed Consolidated Financial Statements.

Shake Shack Inc. Form 10-Q | 7

SHAKE SHACK INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(UNAUDITED)

(in thousands)

			Thirty-Nine Weeks Ended
			September 23 2020		September 25 2019
OPERATING ACTIVITIES
Net income (loss) (including amounts attributable to non-controlling interests)			$	(25,220)	$	26,201
Adjustments to reconcile net income (loss) to net cash provided by operating activities
	Depreciation expense		36,233		29,239
	Amortization of cloud computing asset		1,086		107
	Non-cash operating lease cost		33,726		29,329
	Equity-based compensation		4,058		5,751
	Deferred income taxes		8,680		(1,152)
	Non-cash interest expense		48		85
	Gain on sale of marketable securities		(79)		(22)
	Impairment and loss on disposal of assets		2,924		1,031
	Unrealized (gain) loss on available-for-sale securities		22		(231)
	Other non-cash expense		906		2
	Changes in operating assets and liabilities:
		Accounts receivable	2,241		8,320
		Inventories	(162)		(33)
		Prepaid expenses and other current assets	(759)		265
		Other assets	(2,111)		(6,735)
		Accounts payable	4,349		4,038
		Accrued expenses	(13,361)		2,841
		Accrued wages and related liabilities	(2,214)		(915)
		Other current liabilities	437		638
		Long-term operating lease liabilities	(25,298)		(26,932)
		Other long-term liabilities	2,992		1,216
NET CASH PROVIDED BY OPERATING ACTIVITIES			28,498		73,043
INVESTING ACTIVITIES
Purchases of property and equipment			(47,002)		(80,904)
Purchases of marketable securities			(314)		(970)
Sales of marketable securities			20,000		27,000
NET CASH USED IN INVESTING ACTIVITIES			(27,316)		(54,874)
FINANCING ACTIVITIES
Proceeds from revolving credit facility			50,000		—
Payments on revolving credit facility			(50,000)		—
Deferred financing costs			(64)		(286)
Proceeds from issuance of Class A common stock sold in equity offerings, net of underwriting discounts, commissions and offering costs			144,997		—
Payments on principal of finance leases			(1,670)		(1,433)
Distributions paid to non-controlling interest holders			(478)		(1,706)
Payments under tax receivable agreement			(6,643)		(707)
Proceeds from stock option exercises			2,239		7,089
Employee withholding taxes related to net settled equity awards			(1,779)		(1,371)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES			136,602		1,586
NET INCREASE IN CASH AND CASH EQUIVALENTS			137,784		19,755
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD			37,099		24,750
CASH AND CASH EQUIVALENTS AT END OF PERIOD			$	174,883	$	44,505

See accompanying Notes to Condensed Consolidated Financial Statements.

8 | Shake Shack Inc. Form 10-Q

SHAKE SHACK INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(in thousands, except share and per share amounts)

		Page
Note 1	Nature of Operations	10
Note 2	Summary of Significant Accounting Policies	10
Note 3	Revenue	11
Note 4	Fair Value Measurements	12
Note 5	Inventories	14
Note 6	Property and Equipment	14
Note 7	Supplemental Balance Sheet Information	15
Note 8	Debt	15
Note 9	Leases	16
Note 10	Non-Controlling Interests	18
Note 11	Equity-Based Compensation	21
Note 12	Income Taxes	21
Note 13	Earnings (Loss) Per Share	24
Note 14	Supplemental Cash Flow Information	25
Note 15	Commitments and Contingencies	26
Note 16	Related Party Transactions	27

Shake Shack Inc. Form 10-Q | 9

NOTE 1: NATURE OF OPERATIONS

Shake Shack Inc. ("we," "us," "our," "Shake Shack" and the "Company") was formed on September 23, 2014 as a Delaware corporation for the purpose of facilitating an initial public offering and other related transactions in order to carry on the business of SSE Holdings, LLC and its subsidiaries ("SSE Holdings"). We are the sole managing member of SSE Holdings and, as sole managing member, we operate and control all of the business and affairs of SSE Holdings. As a result, we consolidate the financial results of SSE Holdings and report a non-controlling interest representing the economic interest in SSE Holdings held by the other members of SSE Holdings. As of September 23, 2020 we owned 92.5% of SSE Holdings. Unless the context otherwise requires, "we," "us," "our," "Shake Shack," the "Company" and other similar references, refer to Shake Shack Inc. and, unless otherwise stated, all of its subsidiaries, including SSE Holdings.

We operate and license Shake Shack restaurants ("Shacks"), which serve hamburgers, hot dogs, chicken, crinkle-cut fries, shakes, frozen custard, beer, wine and more. As of September 23, 2020, there were 298 Shacks in operation, system-wide, of which 175 were domestic Company-operated Shacks, 22 were domestic licensed Shacks and 101 were international licensed Shacks. As of September 23, 2020, 8 domestic Company-operated Shacks and 18 licensed Shacks were temporarily closed primarily due to COVID-19.

NOTE 2: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the accounts of Shake Shack Inc. and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. These interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and on a basis consistent in all material respects with the accounting policies described in our Annual Report on Form 10-K for the fiscal year ended December 25, 2019 ("2019 Form 10-K"). Certain information and footnote disclosures normally presented in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes thereto included in our 2019 Form 10-K. In our opinion, all adjustments, which are normal and recurring in nature, necessary for a fair presentation of our financial position and results of operation have been included. Operating results for interim periods are not necessarily indicative of the results that may be expected for a full fiscal year.

SSE Holdings is considered a variable interest entity. Shake Shack Inc. is the primary beneficiary as we have the majority economic interest in SSE Holdings and, as the sole managing member, have decision making authority that significantly affects the economic performance of the entity, while the limited partners have no substantive kick-out or participating rights. As a result, we consolidate SSE Holdings. The assets and liabilities of SSE Holdings represent substantially all of our consolidated assets and liabilities with the exception of certain deferred taxes and liabilities under the Tax Receivable Agreement. As of September 23, 2020 and December 25, 2019, the net assets of SSE Holdings were $388,789 and $270,542, respectively. The assets of SSE Holdings are subject to certain restrictions in SSE Holdings' revolving credit agreement. See Note 8, Debt, for more information.

Fiscal Year

We operate on a 52/53 week fiscal year ending on the last Wednesday in December. Fiscal 2020 contains 53 weeks and ends on December 30, 2020. Fiscal 2019 contained 52 weeks and ended on December 25, 2019. Unless otherwise stated, references to years in this report relate to fiscal years.

Use of Estimates

The preparation of these condensed consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the

10 | Shake Shack Inc. Form 10-Q

date of the financial statements, and the reported amounts of sales and expenses during the reporting period. Actual results could differ from those estimates.

Recently Adopted Accounting Pronouncements   

We adopted the Accounting Standards Updates (“ASUs”) summarized below in fiscal 2020.

Accounting Standards Update (“ASU”)	Description	Date Adopted
Measurement of Credit Losses on Financial Instruments (ASU 2016-13)	This standard replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The adoption of this standard did not have a material impact to our consolidated financial statements.	December 26, 2019
Facilitation of the Effects of Reference Rate Reform on Financial Reporting (ASU 2020-04)	This standard provides optional guidance for a limited time to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. The adoption of this standard did not have a material impact to our consolidated financial statements.	Effective upon issuance (March 12, 2020)

Recently Issued Accounting Pronouncements   

Accounting Standards Update (“ASU”)	Description	Expected Impact	Effective Date
Simplifying the Accounting for Income Taxes (ASU 2019-12)	This standard simplifies various aspects related to accounting for income taxes by removing certain exceptions to the general principles in ASC 740, “Income Taxes” (“ASC 740”), and clarifying certain aspects of the current guidance to promote consistency among reporting entities.	The adoption of this standard is not expected to have a material impact on our consolidated financial statements.	December 31, 2020 Early adoption is permitted.

NOTE 3: REVENUE

Revenue Recognition

Revenue consists of Shack sales and licensing revenue. Generally, revenue is recognized as promised goods or services transfer to the guest or customer in an amount that reflects the consideration we expect to be entitled in exchange for those goods or services.

Revenue from Shack sales is presented net of discounts and recognized when food, beverage and retail products are sold. Sales tax collected from customers is excluded from Shack sales and the obligation is included in sales tax payable until the taxes are remitted to the appropriate taxing authorities. Revenue from our gift cards is deferred and recognized upon redemption.

Licensing revenues include initial territory fees, Shack opening fees, and ongoing sales-based royalty fees from licensed Shacks. Generally, the licenses granted to develop, open and operate each Shack in a specified territory are the predominant goods or services transferred to the licensee in our contracts, and represent distinct performance obligations. Ancillary promised services, such as training and assistance during the initial opening of a Shack, are typically combined with the licenses and considered as one performance obligation per Shack. We determine the transaction price for each contract, which is comprised of the initial territory fee, and an estimate of the total Shack opening fees we expect to be entitled to. The calculation of total Shack opening fees included in the transaction price requires judgment, as it is based on an estimate of the number of Shacks we expect the licensee to open. The transaction price is then allocated equally to each Shack expected to open. The performance obligations are satisfied over time, starting when a Shack opens, through the end of the term of the license granted to the Shack. Because we are transferring licenses to access our intellectual property during a contractual term, revenue is recognized on a straight-line

Shake Shack Inc. Form 10-Q | 11

basis over the license term. Generally, payment for the initial territory fee is received upon execution of the licensing agreement, and payment for the restaurant opening fees are received either in advance of or upon opening the related restaurant. These payments are initially deferred and recognized as revenue as the performance obligations are satisfied, which occurs over a long-term period.

Revenue from sales-based royalties is recognized as the related sales occur.

Revenue recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019, disaggregated by type is as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Shack sales	$	126,288	$	152,366	$	353,855	$	428,811
Licensing revenue:
Sales-based royalties	3,867		5,293		10,943		13,938
Initial territory and opening fees	246		103		559		335
Total revenue	$	130,401	$	157,762	$	365,357	$	443,084

The aggregate amount of the transaction price allocated to performance obligations that are unsatisfied (or partially unsatisfied) as of September 23, 2020 was $17,048. We expect to recognize this amount as revenue over a long-term period, as the license term for each Shack ranges from 5 to 20 years. This amount excludes any variable consideration related to sales-based royalties.

Contract Balances

Opening and closing balances of contract liabilities and receivables from contracts with customers is as follows:

	September 23 2020		December 26 2019
Shack sales receivables	$	4,257	$	4,265
Licensing receivables	2,755		4,510
Gift card liability	2,205		2,258
Deferred revenue, current	564		511
Deferred revenue, long-term	12,144		11,310

Revenue recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 that was included in their respective liability balances at the beginning of the period is as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Gift card liability	$	91	$	84	$	436	$	467
Deferred revenue	234		86		539		305

NOTE 4: FAIR VALUE MEASUREMENTS

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables present information about our financial assets and liabilities measured at fair value on a recurring basis as of September 23, 2020 and December 25, 2019, and indicate the classification within the fair value hierarchy.

Shake Shack Inc. Form 10-Q | 12

Cash, Cash Equivalents and Marketable Securities

The following tables summarize our cash, cash equivalents and marketable securities by significant investment categories as of September 23, 2020 and December 25, 2019:

		September 23, 2020
		Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cash and Cash Equivalents		Marketable Securities
Cash		$	174,883	$	—	$	—	$	174,883	$	174,883	$	—
Level 1:
	Money market funds	—		—		—		—		—		—
	Mutual funds	16,829		50		—		16,879		—		16,879
Total		$	191,712	$	50	$	—	$	191,762	$	174,883	$	16,879

		December 25, 2019
		Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cash and Cash Equivalents		Marketable Securities
Cash		$	32,094	$	—	$	—	$	32,094	$	32,094	$	—
Level 1:
	Money market funds	5,005		—		—		5,005		5,005		—
	Mutual funds	36,436		72		—		36,508		—		36,508
Total		$	73,535	$	72	$	—	$	73,607	$	37,099	$	36,508

A summary of other income (loss) from equity securities recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Equity securities:
	Dividend income	$	40	$	254	$	290	$	997
	Realized gain (loss) on sale of investments	—		—		79		22
	Unrealized gain (loss) on equity securities	—		—		(22)		231
Total		$	40	$	254	$	347	$	1,250

A summary of equity securities sold and gross realized gains and losses recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Equity securities:
	Gross proceeds from sales and redemptions	$	—	$	—	$	20,000	$	27,000
	Cost basis of sales and redemptions	—		—		19,921		26,978
	Gross realized gains included in net income (loss)	—		—		79		36
	Gross realized losses included in net income (loss)	—		—		—		(14)

Realized gains and losses are determined on a specific identification method and are included in other income, net on the Condensed Consolidated Statements of Income (Loss). As of September 23, 2020 and December 25, 2019, there was no decline in the market value of our marketable securities investment portfolio.

Shake Shack Inc. Form 10-Q | 13

Other Financial Instruments

The carrying value of our other financial instruments, including accounts receivable, accounts payable, and accrued expenses as of September 23, 2020 and December 25, 2019 approximated their fair value due to the short-term nature of these financial instruments.

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

Assets and liabilities that are measured at fair value on a non-recurring basis include our long-lived assets, operating lease right-of-use assets and indefinite-lived intangible assets. During the thirty-nine weeks ended September 23, 2020, we recognized an impairment charge of $1,132 at one location. Of the total impairment charge, $736 was attributed to property and equipment held and used, $383 was attributed to operating lease right-of-use assets, and $13 was attributed to finance lease right-of-use assets. The asset impairment charge is included in Impairment and loss on disposal of assets on the Condensed Consolidated Statement of Income (Loss). The fair values of assets were determined using an income-based approach and are classified as Level 3 within the fair value hierarchy. Significant inputs include projections of future cash flows, discount rates, Shack sales and profitability. There were no impairment charges recognized during the thirteen weeks ended September 23, 2020, and the thirteen and thirty-nine weeks ended September 25, 2019.

NOTE 5: INVENTORIES

Inventories are stated at the lower of cost or net realizable value with cost determined on a first-in, first-out basis. We make adjustments to our inventory reserves for inventories that are deemed to be obsolete or slow moving. As of September 23, 2020 and December 25, 2019, no adjustment was deemed necessary to reduce inventory to net realizable value. Inventories as of September 23, 2020 and December 25, 2019 consisted of the following:

	September 23 2020		December 25 2019
Food	$	1,477	$	1,738
Wine	81		107
Beer	113		114
Beverages	209		233
Retail merchandise	76		29
Paper goods	427		—
Inventories	$	2,383	$	2,221

NOTE 6: PROPERTY AND EQUIPMENT

Property and equipment as of September 23, 2020 and December 25, 2019 consisted of the following:

	September 23 2020		December 25 2019
Leasehold improvements	$	328,686	$	302,204
Equipment	58,951		54,404
Furniture and fixtures	19,400		18,082
Computer equipment and software	27,160		24,226
Financing equipment lease assets	8,774		7,442
Construction in progress	37,560		30,290
Property and equipment, gross	480,531		436,648
Less: accumulated depreciation	154,005		121,786
Property and equipment, net	$	326,526	$	314,862

14 | Shake Shack Inc. Form 10-Q

NOTE 7: SUPPLEMENTAL BALANCE SHEET INFORMATION

The components of other current liabilities as of September 23, 2020 and December 25, 2019 are as follows:

	September 23 2020		December 25 2019
Sales tax payable	$	3,202	$	4,086
Current portion of liabilities under tax receivable agreement	—		7,777
Gift card liability	2,205		2,258
Current portion of financing equipment lease liabilities	1,740		1,873
Other	5,433		3,505
Other current liabilities	$	12,580	$	19,499

The components of other long-term liabilities as of September 23, 2020 and December 25, 2019 are as follows:

	September 23 2020		December 25 2019
Deferred licensing revenue	$	12,144	$	11,310
Long-term portion of financing equipment lease liabilities	3,492		3,643
Other(1)	6,192		375
Other long-term liabilities	$	21,828	$	15,328

(1)    As of September 23, 2020, Other included $3,388 of deferred lease incentive liabilities related to leases with variable lease cost as well as $2,461 of deferred social security taxes associated with the CARES Act. For further information relating to the CARES Act, see Note 12, Income Taxes.

NOTE 8: DEBT

Revolving Credit Facility

In August 2019, we terminated our previous revolving credit facility and entered into a new revolving credit facility agreement ("Revolving Credit Facility"), which permits borrowings up to $50,000, of which the entire amount is available immediately, with the ability to increase available borrowings up to an additional $100,000, to be made available subject to satisfaction of certain conditions. The Revolving Credit Facility will mature and all amounts outstanding will be due and payable in August 2024. The Revolving Credit Facility also permits the issuance of letters of credit upon our request of up to $15,000. Borrowings under the Revolving Credit Facility will bear interest at either: (i) LIBOR plus a percentage ranging from 1.0% to 1.5% or (ii) the base rate plus a percentage ranging from 0.0% to 0.5%, in each case depending on our net lease adjusted leverage ratio. To the extent the LIBOR reference rate is no longer available, the administrative agent, in consultation with us, will determine a replacement rate which will be generally in accordance with similar transactions in which it serves as administrative agent. 

The obligations under the Revolving Credit Facility are secured by a first-priority security interest in substantially all of the assets of SSE Holdings and the guarantors. The obligations under the Revolving Credit Facility are guaranteed by each of SSE Holdings' direct and indirect subsidiaries (with certain exceptions).

The Revolving Credit Facility requires us to comply with maximum net lease adjusted leverage and minimum fixed charge coverage ratios. We are not subject to these coverage ratios for a period of time due to the First Amendment to the Revolving Credit Facility described below. In addition, the Revolving Credit Facility contains other customary affirmative and negative covenants, including those which (subject to certain exceptions and dollar thresholds) limit our ability to incur debt; incur liens; make investments; engage in mergers, consolidations, liquidations or acquisitions; dispose of assets; make distributions on or repurchase equity securities; engage in transactions with affiliates; and prohibits us, with certain exceptions, from engaging in any line of business not related to our current line of business. As of September 23, 2020, we were in compliance with all covenants.

Shake Shack Inc. Form 10-Q | 15

In May 2020, we entered into a first amendment to the Revolving Credit Facility ("First Amendment"), which, among other things, provides for modified financial covenant compliance requirements for a period of time. The First Amendment requires us to maintain minimum liquidity of $25,000 through July 1, 2021 and outstanding borrowings during the applicable period covered by the First Amendment bear interest at either: (i) LIBOR plus a percentage ranging from 1.0% to 2.5% or (ii) the base rate plus a percentage ranging from 0.0% to 1.50%, in each case depending on our net lease adjusted leverage ratio.

In March 2020, we drew down the full $50,000 available under the Revolving Credit Facility to enhance liquidity and financial flexibility given the uncertain market conditions created by the COVID-19 pandemic. We repaid this amount in full, plus interest, in June 2020.

Total interest costs incurred were $143 and $697 for the thirteen and thirty-nine weeks ended September 23, 2020, respectively, and $133 and $302 for the thirteen and thirty-nine weeks ended September 25, 2019, respectively.

Paycheck Protection Program

In April 2020, we entered into a $10,000 note payable with J.P. Morgan pursuant to the Paycheck Protection Program (“PPP Loan”) under the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act") and returned the entire outstanding balance plus interest in April 2020.

NOTE 9: LEASES

Nature of Leases

We lease all of our domestic Company-operated Shacks, our home office and certain equipment under various non-cancelable lease agreements that expire on various dates through 2036. We evaluate contracts entered into to determine whether the contract involves the use of property or equipment, which is either explicitly or implicitly identified in the contract. We evaluate whether we control the use of the asset, which is determined by assessing whether we obtain substantially all economic benefits from the use of the asset, and whether we have the right to direct the use of the asset. If these criteria are met and we have identified a lease, we account for the contract under the requirements of Accounting Standards Codification Topic 842 ("ASC 842").

Upon the possession of a leased asset, we determine its classification as an operating or finance lease. Our real estate leases are classified as operating leases and most of our equipment leases are classified as finance leases. Generally, our real estate leases have initial terms ranging from 10 to 15 years and typically include two five-year renewal options. Renewal options are generally not recognized as part of the right-of-use assets and lease liabilities as it is not reasonably certain at commencement date that we would exercise the options to extend the lease. Our real estate leases typically provide for fixed minimum rent payments and/or contingent rent payments based upon sales in excess of specified thresholds. When the achievement of such sales thresholds is deemed to be probable, contingent rent is accrued in proportion to the sales recognized during the period. For operating leases that include rent holidays and rent escalation clauses, we recognize lease expense on a straight-line basis over the lease term from the date we take possession of the leased property. Lease expense incurred before a Shack opens is recorded in Pre-opening costs on the Condensed Consolidated Statements of Income (Loss). Once a domestic Company-operated Shack opens, we record the straight-line lease expense and any contingent rent, if applicable, in occupancy and related expenses on the Condensed Consolidated Statements of Income (Loss). Many of our leases also require us to pay real estate taxes, common area maintenance costs and other occupancy costs which are included in Occupancy and related expenses on the Condensed Consolidated Statements of Income (Loss).

As there were no explicit rates provided in our leases, we used our incremental borrowing rate in determining the present value of future lease payments. The discount rate used to measure the lease liability at the transition date was derived from the average of the yield curves obtained from using the notching method and the recovery rate method. The most significant assumption in calculating the incremental borrowing rate is our credit rating and is subject to judgment. We determined our credit rating based on a comparison of the financial information of SSE Holdings to other public companies and then used their respective credit ratings to develop our own.

We expend cash for leasehold improvements to build out and equip our leased premises. Generally, a portion of the leasehold improvements and building costs are reimbursed by our landlords as landlord incentives pursuant to agreed-upon terms in our lease agreements. If obtained, landlord incentives usually take the form of cash, full or partial credits against our future minimum

16 | Shake Shack Inc. Form 10-Q

or contingent rents otherwise payable by us, or a combination thereof. In most cases, landlord incentives are received after we take possession of the property, as we meet required milestones during the construction of the property. We include these amounts in the measurement of the initial operating lease liability, which are also reflected as a reduction to the initial measurement of the right-of-use asset.

A summary of finance and operating lease right-of-use assets and liabilities as of September 23, 2020 and December 25, 2019 is as follows:

	Classification	September 23 2020		December 25 2019
Finance leases	Property and equipment, net	$	5,109	$	5,444
Operating leases	Operating lease assets	305,133		274,426
Total right-of-use assets		$	310,242	$	279,870
Finance leases:
	Other current liabilities	$	1,740	$	1,873
	Other long-term liabilities	3,493		3,643
Operating leases:
	Operating lease liabilities, current	34,859		30,002
	Long-term operating lease liabilities	336,149		304,914
Total lease liabilities		$	376,241	$	340,432

The components of lease expense for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 was as follows:

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Finance lease cost:
	Amortization of right-of-use assets	Depreciation expense	$	531	$	538	$	1,710	$	1,491
	Interest on lease liabilities	Interest expense	51		52		161		148
Operating lease cost		Occupancy and related expenses General and administrative expenses Pre-opening costs	11,506		10,564		33,726		29,329
Short-term lease cost		Occupancy and related expenses	138		279		331		313
Variable lease cost		Other operating expenses Occupancy and related expenses General and administrative expenses Pre-opening costs	3,267		4,338		9,413		11,636
Total lease cost			$	15,493	$	15,771	$	45,341	$	42,917

Shake Shack Inc. Form 10-Q | 17

As of September 23, 2020, future minimum lease payments for finance and operating leases consisted of the following:

	Finance Leases		Operating Leases
2020	$	527	$	16,785
2021	1,890		46,943
2022	1,400		53,151
2023	896		53,705
2024	541		52,785
Thereafter	406		268,128
Total minimum payments	5,660		491,497
Less: imputed interest	427		120,489
Total lease liabilities	$	5,233	$	371,008

As of September 23, 2020 we had additional operating lease commitments of $45,605 for non-cancelable leases without a possession date, which will begin to commence in 2020. These lease commitments are consistent with the leases that we have executed thus far.

A summary of lease terms and discount rates for finance and operating leases as of September 23, 2020 and December 25, 2019 is as follows:

		September 23 2020		December 25 2019
Weighted-average remaining lease term (years):
	Finance leases	5.3		5.1
	Operating leases	9.8		10.1
Weighted-average discount rate:
	Finance leases	3.6	%	3.7	%
	Operating leases	3.8	%	5.4	%

Supplemental cash flow information related to leases for the thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirty-Nine Weeks Ended
		September 23 2020	September 25 2019
Cash paid for amounts included in the measurement of lease liabilities:
	Operating cash flows from finance leases	161	$	148
	Operating cash flows from operating leases	29,449	27,238
	Financing cash flows from finance leases	1,670	1,433
Right-of-use assets obtained in exchange for lease obligations:
	Finance leases	1,411	1,927
	Operating leases	42,502	65,773

NOTE 10: NON-CONTROLLING INTERESTS

We are the sole managing member of SSE Holdings and, as a result, consolidate the financial results of SSE Holdings. We report a non-controlling interest representing the economic interest in SSE Holdings held by the other members of SSE Holdings. The Third Amended and Restated Limited Liability Company Agreement, as further amended, (the "LLC Agreement") of SSE Holdings provides that holders of LLC Interests may, from time to time, require SSE Holdings to redeem all or a portion of their LLC Interests for newly-issued shares of Class A common stock on a one-for-one basis. In connection with any redemption or

Shake Shack Inc. Form 10-Q | 18

exchange, we will receive a corresponding number of LLC Interests, increasing our total ownership interest in SSE Holdings. Changes in our ownership interest in SSE Holdings while we retain our controlling interest in SSE Holdings will be accounted for as equity transactions. As such, future redemptions or direct exchanges of LLC Interests in SSE Holdings by the other members of SSE Holdings will result in a change in ownership and reduce the amount recorded as non-controlling interest and increase additional paid-in capital.

On April 17, 2020, we announced an “at-the-market” equity offering program (the “ATM Program”), under which we may offer and sell shares of our Class A common stock having an aggregate price of up to $75,000 from time to time. On April 21, 2020, we completed the sale of 233,467 shares of our Class A common stock pursuant to the ATM Program and received $9,794 of proceeds, net of commissions. The proceeds were used to purchase newly-issued LLC Interests.

On April 21, 2020, we completed an underwritten offering of 3,416,070 shares of our Class A common stock, resulting in $135,857 of proceeds, net of underwriting discounts and commissions. The proceeds were used to purchase newly-issued LLC Interests.

The following table summarizes the ownership interest in SSE Holdings as of September 23, 2020 and December 25, 2019.

	September 23, 2020			December 25, 2019
	LLC Interests	Ownership%		LLC Interests	Ownership %
Number of LLC Interests held by Shake Shack Inc.	38,280,102	92.5	%	34,417,302	91.6	%
Number of LLC Interests held by non-controlling interest holders	3,112,002	7.5	%	3,145,197	8.4	%
Total LLC Interests outstanding	41,392,104	100.0	%	37,562,499	100.0	%

The weighted average ownership percentages for the applicable reporting periods are used to attribute net income (loss) and other comprehensive income (loss) to Shake Shack Inc. and the non-controlling interest holders. The non-controlling interest holders' weighted average ownership percentage for the thirteen and thirty-nine weeks ended September 23, 2020 was 7.5% and 7.9%, respectively. The non-controlling interest holders' weighted average ownership percentage for the thirteen and thirty-nine weeks ended September 25, 2019 was 14.4% and 17.9%, respectively.

Shake Shack Inc. Form 10-Q | 19

The following table summarizes the effects of changes in ownership of SSE Holdings on our equity during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Net income (loss) attributable to Shake Shack Inc.		$	(5,559)	$	10,344	$	(22,730)	$	21,920
Transfers (to) from non-controlling interests:
	Increase in additional paid-in capital as a result of the redemption of LLC Interests	44		1,634		239		7,115
	Increase in additional paid-in-capital as a result of the GTC Merger	—		19,218		—		19,218
	Increase (decrease) in additional paid-in capital as a result of activity under stock compensation plans and the related income tax effect	367		1,789		627		2,718
	Increase in additional paid-in-capital as a result of the issuance of Class A common stock sold in equity offerings	—		—		135,718		—
Total effect of changes in ownership interest on equity attributable to Shake Shack Inc.		$	(5,148)	$	32,985	$	113,854	$	50,971

The following table summarizes redemptions of LLC Interests activity during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

		Thirteen Weeks Ended		Thirty-Nine Weeks Ended
		September 23 2020	September 25 2019	September 23 2020	September 25 2019
Redemption and acquisition of LLC Interests
	Number of LLC Interests redeemed by non-controlling interest holders	5,000	231,599	33,195	1,057,737
	Number of LLC Interests acquired in connection with the Gramercy Tavern Merger	—	2,690,263	—	2,690,263
	Number of LLC Interests received by Shake Shack Inc.	5,000	231,599	33,195	1,057,737
Issuance of Class A common stock
	Shares of Class A common stock issued in connection with redemptions of LLC Interests	5,000	231,599	33,195	1,057,737
	Shares of Class A common stock issued in connection with the Gramercy Tavern Merger	—	2,690,263	—	2,690,263
Cancellation of Class B common stock
	Shares of Class B common stock surrendered and canceled	5,000	231,599	33,195	1,057,737
	Shares of Class B common stock surrendered and canceled in connection with the Gramercy Tavern Merger	—	2,690,263	—	2,690,263

During the thirteen and thirty-nine weeks ended September 23, 2020, we received an aggregate of 38,564 and 180,068 LLC Interests, respectively, in connection with the activity under our stock compensation plan and 172,403 and 383,117 LLC Interests, respectively, during the thirteen and thirty-nine weeks ended September 25, 2019.

Pursuant to a Stockholders Agreement, dated as of February 4, 2015, as amended, by and among Daniel H. Meyer, the Daniel H. Meyer 2012 Gift Trust dtd 10/31/12 (the "Gift Trust"), other affiliates (collectively, the "Meyer Stockholders") and other parties thereto, the Meyer Stockholders had the right to cause all of the shares of Gramercy Tavern Corp. ("GTC") to be exchanged for shares of our Class A common stock pursuant to a tax-free reorganization. In August 2019, the Meyer Stockholders exercised their right with respect to GTC (the "GTC Merger"). To effect the GTC Merger, a newly-formed wholly-owned subsidiary of Shake Shack Inc. merged with and into GTC, with GTC as the surviving entity, which was then merged with and into Shake Shack Inc. Prior to the GTC Merger, GTC owned 2,690,263 LLC Interests and an equivalent number of shares of our Class B common stock. The stockholders of GTC, received on a one-for-one basis, 2,690,263 shares of Class A common stock based upon the amount of shares of GTC held by the stockholders; all of the shares of Class B common stock held by GTC were cancelled; and all of the LLC Interests held by GTC were transferred to us.

20 | Shake Shack Inc. Form 10-Q

NOTE 11: EQUITY-BASED COMPENSATION

A summary of equity-based compensation expense recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Stock options	$	14	$	637	$	301	$	1,974
Performance stock units	233		720		1,009		2,439
Restricted stock units	1,092		522		2,748		1,338
Equity-based compensation expense	$	1,339	$	1,879	$	4,058	$	5,751
Total income tax benefit recognized related to equity-based compensation	$	60	$	48	$	135	$	141

Equity-based compensation expense is included in general and administrative expenses and labor and related expenses on the Condensed Consolidated Statements of Income (Loss) during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
General and administrative expenses	$	1,199	$	1,795	$	3,681	$	5,521
Labor and related expenses	140		84		377		230
Equity-based compensation expense	$	1,339	$	1,879	$	4,058	$	5,751

NOTE 12: INCOME TAXES

We are the sole managing member of SSE Holdings and, as a result, consolidate the financial results of SSE Holdings. SSE Holdings is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, SSE Holdings is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by SSE Holdings is passed through to and included in the taxable income or loss of its members, including us, on a pro rata basis. We are subject to U.S. federal income taxes, in addition to state and local income taxes with respect to our allocable share of any taxable income or loss of SSE Holdings, as well as any stand-alone income or loss generated by Shake Shack Inc. We are also subject to withholding taxes in foreign jurisdictions.

Shake Shack Inc. Form 10-Q | 21

Income Tax Expense (Benefit)

A reconciliation of income tax expense (benefit) computed at the U.S. federal statutory income tax rate to the recognized income tax expense (benefit) is as follows:

	Thirteen Weeks Ended								Thirty-Nine Weeks Ended
	September 23 2020				September 25 2019				September 23 2020				September 25 2019
Expected U.S. federal income taxes at statutory rate	$	(1,450)	21.0	%	$	1,738	21.0	%	$	(6,725)	21.0	%	$	5,492	21.0	%
State and local income taxes, net of federal benefit	(492)		7.1	%	505		6.1	%	(2,192)		6.8	%	1,746		6.7	%
Foreign withholding taxes	504		(7.3)	%	655		7.9	%	712		(2.2)	%	1,624		6.2	%
Tax credits	(701)		10.1	%	(2,874)		(34.7)	%	(1,128)		3.5	%	(4,697)		(18.0)	%
Return to provision adjustment	132		(1.9)	%	(153)		(1.8)	%	132		(0.4)	%	(153)		(0.6)	%
Non-controlling interest	(11)		0.2	%	(346)		(4.2)	%	411		(1.3)	%	(1,291)		(4.9)	%
Tax effect of change in basis related to the adoption of ASC 842	—		—	%	—		—	%	—		—	%	1,161		4.4	%
Change in valuation allowance	1,221		(17.7)	%	(2,587)		(31.2)	%	1,971		(6.2)	%	(3,847)		(14.7)	%
Other	—		—	%	(82)		(1.0)	%	17		—	%	(82)		(0.3)	%
Income tax benefit	$	(797)	11.5	%	$	(3,144)	(38.0)	%	$	(6,802)	21.2	%	$	(47)	(0.2)	%

Our effective income tax rates for the thirteen weeks ended September 23, 2020 and September 25, 2019 were 11.5% and (38.0)%, respectively. The increase was primarily driven by lower pre-tax book income resulting in a loss, causing the tax credits to have an increasing effect on the tax rate, as well as the recognition of a valuation allowance against foreign tax credits that are not expected to be realized before the expiration of the carryforward period. Additionally, an increase in our ownership interest in SSE Holdings increases our share of the taxable income (loss) of SSE Holdings. Our weighted-average ownership interest in SSE Holdings was 92.5% and 85.6% for the thirteen weeks ended September 23, 2020 and September 25, 2019, respectively.

Our effective income tax rates for the thirty-nine weeks ended September 23, 2020 and September 25, 2019 were 21.2% and (0.2)%, respectively. The increase was primarily driven by lower pre-tax book income resulting in a loss, causing the tax credits to have an increasing effect on the tax rate, as well as the recognition of a valuation allowance against foreign tax credits that are not expected to be realized before the expiration of the carryforward period. These were partially offset by a reduction in the tax effect of changes related to the adoption of new accounting standards, for which there were none during the thirty-nine weeks ended September 23, 2020. Additionally, as noted above, an increase in our ownership interest in SSE Holdings increases our share of the taxable income (loss) of SSE Holdings. Our weighted-average ownership interest in SSE Holdings was 92.1% and 82.1% for the thirty-nine weeks ended September 23, 2020 and September 25, 2019, respectively.

Deferred Tax Assets and Liabilities

During the thirty-nine weeks ended September 23, 2020, we acquired an aggregate of 213,263 LLC Interests in connection with the redemption of LLC Interests, activity relating to our stock compensation plan, and in connection with the second quarter equity offering. We recognized a deferred tax asset in the amount of $1,562 associated with the basis difference in our investment in SSE Holdings upon acquisition of these LLC Interests. As of September 23, 2020, the total deferred tax asset related to the basis difference in our investment in SSE Holdings was $175,320. However, a portion of the total basis difference will only reverse upon the eventual sale of our interest in SSE Holdings, which we expect would result in a capital loss.

During the thirty-nine weeks ended September 23, 2020, we also recognized $116 of deferred tax assets related to additional tax basis increases generated from expected future payments under the Tax Receivable Agreement and related deductions for imputed interest on such payments. See "Tax Receivable Agreement," herein for more information.

We evaluate the realizability of our deferred tax assets on a quarterly basis and establish valuation allowances when it is more likely than not that all or a portion of a deferred tax asset may not be realized. As of September 23, 2020, we concluded, based on the weight of all available positive and negative evidence, that all of our deferred tax assets (except for those deferred tax assets related to New York City UBT and certain foreign tax credits) are more likely than not to be realized. As such, an

22 | Shake Shack Inc. Form 10-Q

additional valuation allowance of $1,221 was recognized on certain foreign tax credits not expected to be realized before the expiration of the carryforward period.

Uncertain Tax Positions

No uncertain tax positions existed as of September 23, 2020. Shake Shack Inc. was formed in September 2014 and did not engage in any operations prior to our initial public offering in February of 2015 and related organizational transactions. Shake Shack Inc. first filed tax returns for tax year 2014, which is the first tax year subject to examination by taxing authorities for U.S. federal and state income tax purposes. Additionally, although SSE Holdings is treated as a partnership for U.S. federal and state income taxes purposes, it is still required to file an annual U.S. Return of Partnership Income, which is subject to examination by the Internal Revenue Service ("IRS"). The statute of limitations has expired for tax years through 2015 for SSE Holdings.

Tax Receivable Agreement

Pursuant to our election under Section 754 of the Internal Revenue Code (the "Code"), we expect to obtain an increase in our share of the tax basis in the net assets of SSE Holdings when LLC Interests are redeemed or exchanged by the other members of SSE Holdings. We plan to make an election under Section 754 of the Code for each taxable year in which a redemption or exchange of LLC Interest occurs. We intend to treat any redemptions and exchanges of LLC Interests as direct purchases of LLC Interests for U.S. federal income tax purposes. These increases in tax basis may reduce the amounts that we would otherwise pay in the future to various tax authorities. They may also decrease gains (or increase losses) on future dispositions of certain capital assets to the extent tax basis is allocated to those capital assets.

On February 4, 2015, we entered into a tax receivable agreement with certain of the then-existing members of SSE Holdings (the "Tax Receivable Agreement") that provides for the payment by us of 85% of the amount of any tax benefits that we actually realize, or in some cases are deemed to realize, as a result of (i) increases in our share of the tax basis in the net assets of SSE Holdings resulting from any redemptions or exchanges of LLC Interests, (ii) tax basis increases attributable to payments made under the Tax Receivable Agreement, and (iii) deductions attributable to imputed interest pursuant to the Tax Receivable Agreement (the "TRA Payments"). We expect to benefit from the remaining 15% of any tax benefits that we may actually realize. The TRA Payments are not conditioned upon any continued ownership interest in SSE Holdings or us. The rights of each member of SSE Holdings, that is a party to the Tax Receivable Agreement, are assignable to transferees of their respective LLC Interests.

During the thirty-nine weeks ended September 23, 2020, we acquired an aggregate of 33,195 LLC Interests in connection with the redemption of LLC Interests, which resulted in an increase in the tax basis of our investment in SSE Holdings subject to the provisions of the Tax Receivable Agreement. We recognized an additional liability in the amount of $414 for the TRA Payments due to the redeeming members, representing 85% of the aggregate tax benefits we expect to realize from the tax basis increases related to the redemption of LLC Interests, after concluding it was probable that such TRA Payments would be paid based on our estimates of future taxable income. During the thirty-nine weeks ended September 23, 2020 and September 25, 2019, payments of $6,643 and $707, inclusive of interest, were made to the parties to the Tax Receivable Agreement, respectively. As of September 23, 2020, the total amount of TRA Payments due under the Tax Receivable Agreement, was $228,197, of which no amount was included in other current liabilities on the Condensed Consolidated Balance Sheet. See Note 15, Commitments and Contingencies, for more information relating to our liabilities under the Tax Receivable Agreement.

CARES Act

On March 27, 2020, the U.S. government enacted the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) to provide certain relief as a result of the COVID-19 pandemic. The CARES Act provides tax relief, along with other stimulus measures, including a retroactive technical correction of prior tax legislation for tax depreciation of certain qualified improvement property, among other changes.

We are currently estimating the amount of accelerated tax depreciation deductions as a result of the technical amendments made by the CARES Act to qualified improvement property. During the thirty-nine weeks ended September 23, 2020, we recognized accelerated tax depreciation deductions of $446 related to assets placed in service in fiscal 2020, and are recorded as components within our deferred income taxes, net on the Condensed Consolidated Balance Sheets. In addition, subsequent to the second quarter of 2020, we began deferring the employer-paid portion of social security taxes as permitted by the CARES Act.

Shake Shack Inc. Form 10-Q | 23

NOTE 13: EARNINGS (LOSS) PER SHARE

Basic earnings (loss) per share of Class A common stock is computed by dividing net income (loss) attributable to Shake Shack Inc. by the weighted-average number of shares of Class A common stock outstanding during the period. Diluted earnings (loss) per share of Class A common stock is computed by dividing net income (loss) attributable to Shake Shack Inc. by the weighted-average number of shares of Class A common stock outstanding adjusted to give effect to potentially dilutive securities.

The following table sets forth reconciliations of the numerators and denominators used to compute basic and diluted earnings (loss) per share of Class A common stock for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
			September 23 2020		September 25 2019		September 23 2020		September 25 2019
Numerator:
	Net income (loss)		$	(6,110)	$	11,423	$	(25,220)	$	26,201
	Less: net income (loss) attributable to non-controlling interests		(551)		1,079		(2,490)		4,281
	Net income (loss) attributable to Shake Shack Inc.		$	(5,559)	$	10,344	$	(22,730)	$	21,920
Denominator:
	Weighted-average shares of Class A common stock outstanding—basic		38,251		31,961		36,668		30,549
	Effect of dilutive securities:
		Stock options	—		824		—		777
		Performance stock units	—		50		—		64
		Restricted stock units	—		81		—		51
	Weighted-average shares of Class A common stock outstanding—diluted		38,251		32,916		36,668		31,441
Earnings (loss) per share of Class A common stock—basic			$	(0.15)	$	0.32	$	(0.62)	$	0.72
Earnings (loss) per share of Class A common stock—diluted			$	(0.15)	$	0.31	$	(0.62)	$	0.70

Shares of our Class B common stock do not share in the earnings or losses of Shake Shack and are therefore not participating securities. As such, separate presentation of basic and diluted earnings (loss) per share of Class B common stock under the two-class method has not been presented.

24 | Shake Shack Inc. Form 10-Q

The following table presents potentially dilutive securities, as of the end of the period, excluded from the computations of diluted earnings (loss) per share of Class A common stock for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Stock options	764,902	(1)	—		764,902	(1)	—
Performance stock units	139,081	(1)	66,101	(2)	139,081	(1)	66,101	(2)
Restricted stock units	262,232	(1)	—		262,232	(1)	—
Shares of Class B common stock	3,112,002	(3)	3,809,347	(3)	3,112,002	(3)	3,809,347	(3)

(1)    Represents number of instruments outstanding at the end of the period that were excluded from the computation of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive.

(2)    Excluded from the computation of diluted earnings per share of Class A common stock because the performance conditions associated with these awards were not met assuming the end of the reporting period was the end of the performance period.

(3) Shares of our Class B common stock outstanding as of the end of the period are considered potentially dilutive shares of Class A common stock. Amounts have been excluded from the computations of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive under the if-converted and two-class methods.

NOTE 14: SUPPLEMENTAL CASH FLOW INFORMATION

The following table sets forth supplemental cash flow information for the thirty-nine weeks ended September 23, 2020 and September 25, 2019:

		Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019
Cash paid for:
	Income taxes, net of refunds	$	1,270	$	2,483
	Interest, net of amounts capitalized	584		157
Non-cash investing activities:
	Accrued purchases of property and equipment	9,544		17,394
	Capitalized equity-based compensation	29		79
Non-cash financing activities:
	Class A common stock issued in connection with the redemption of LLC Interests	—		1
	Class A common stock issued in connection with the GTC merger	—		3
	Cancellation of Class B common stock in connection with the redemption of LLC Interests	—		(1)
	Cancellation of Class B common stock in connection with the GTC Merger	—		(3)
	Establishment of liabilities under tax receivable agreement	414		20,027

Shake Shack Inc. Form 10-Q | 25

NOTE 15: COMMITMENTS AND CONTINGENCIES

Lease Commitments

We are obligated under various operating leases for Shacks and our home office space, expiring in various years through 2036. Under certain of these leases, we are liable for contingent rent based on a percentage of sales in excess of specified thresholds and are typically responsible for our proportionate share of real estate taxes, common area maintenance charges and utilities. See Note 9, Leases.

As security under the terms of one of our leases, we are obligated under a letter of credit totaling $130 as of September 23, 2020, which expires in February 2026. Additionally, in September 2017, we entered into a letter of credit in conjunction with our new home office lease in the amount of $603, which expires in August 2021 and renews automatically for one-year periods through January 31, 2034.

Purchase Commitments

Purchase obligations include legally binding contracts, including commitments for the purchase, construction or remodeling of real estate and facilities, firm minimum commitments for inventory purchases, equipment purchases, marketing-related contracts, software acquisition/license commitments and service contracts. These obligations are generally short-term in nature and are recorded as liabilities when the related goods are received or services rendered. We also enter into long-term, exclusive contracts with certain vendors to supply us with food, beverages and paper goods, obligating us to purchase specified quantities.

Legal Contingencies

In February 2018, a claim was filed against Shake Shack in California state court alleging certain violations of the California Labor Code. At a mediation between the parties, we agreed to settle the matter with the plaintiff and all other California employees who elect to participate in the settlement for $1,200. As of September 23, 2020, an accrual in the amount of $1,180 was recorded for this matter and related expenses.

We are subject to various legal proceedings, claims and liabilities, such as employment-related claims and slip and fall cases, which arise in the ordinary course of business and are generally covered by insurance. As of September 23, 2020, the amount of the ultimate liability with respect to these matters was not material.

Liabilities under Tax Receivable Agreement

As described in Note 12, Income Taxes, we are a party to the Tax Receivable Agreement under which we are contractually committed to pay certain of the members of SSE Holdings 85% of the amount of any tax benefits that we actually realize, or in some cases are deemed to realize, as a result of certain transactions. We are not obligated to make any payments under the Tax Receivable Agreement until the tax benefits associated with the transactions that gave rise to the payments are realized. Amounts payable under the Tax Receivable Agreement are contingent upon, among other things, (i) generation of future taxable income over the term of the Tax Receivable Agreement and (ii) future changes in tax laws. If we do not generate sufficient taxable income in the aggregate over the term of the Tax Receivable Agreement to utilize the tax benefits, then we would not be required to make the related TRA Payments. During the thirty-nine weeks ended September 23, 2020 and September 25, 2019, we recognized liabilities totaling $414 and $20,027, respectively, relating to our obligations under the Tax Receivable Agreement, after concluding that it was probable that we would have sufficient future taxable income over the term of the Tax Receivable Agreement to utilize the related tax benefits. As of September 23, 2020 and December 25, 2019, our total obligations under the Tax Receivable Agreement were $228,197 and $234,426, respectively. There were no transactions subject to the Tax Receivable Agreement for which we did not recognize the related liability, as we concluded that we would have sufficient future taxable income to utilize all of the related tax benefits.

26 | Shake Shack Inc. Form 10-Q

NOTE 16: RELATED PARTY TRANSACTIONS

Union Square Hospitality Group

The Chairman of our Board of Directors serves as the Chief Executive Officer of Union Square Hospitality Group, LLC. As a result, Union Square Hospitality Group, LLC and its subsidiaries, set forth below, are considered related parties.

Hudson Yards Sports and Entertainment

In fiscal 2011, we entered into a Master License Agreement (as amended, "MLA") with Hudson Yards Sports and Entertainment LLC ("HYSE") to operate Shake Shack branded limited menu concession stands in sports and entertainment venues within the United States. In February 2019, the agreement was assigned to Hudson Yards Catering ("HYC"), the parent of HYSE. The agreement expires in January 2027 and includes five consecutive five-year renewal options at HYC's option. As consideration for these rights, HYC pays us a license fee based on a percentage of net food sales, as defined in the MLA. HYC also pays us a percentage of profits on sales of branded beverages, as defined in the MLA.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts received from HYC	Licensing revenue	$	26	$	250	$	60	$	401

	Classification	September 23 2020		December 25 2019
Amounts due from HYC	Accounts Receivable	$	9	$	47

Madison Square Park Conservancy

The Chairman of our Board of Directors serves as a director of the Madison Square Park Conservancy ("MSP Conservancy"), with which we have a license agreement and pay license fees to operate our Madison Square Park Shack.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to MSP Conservancy	Occupancy and related expenses	$	173	$	138	$	392	$	692

	Classification	September 23 2020		December 25 2019
Amounts due to MSP Conservancy	Accrued expenses	$	249	$	53

Share Our Strength

The Chairman of our Board of Directors serves as a director of Share Our Strength, for which Shake Shack holds the "Great American Shake Sale" to raise money and awareness for childhood hunger. During the Great American Shake Sale, we encourage guests to donate money to Share Our Strength's No Kid Hungry campaign in exchange for a coupon for a free shake. All of the guest donations we collect go directly to Share Our Strength. Amounts raised through donations during the thirteen weeks ended September 25, 2019, were payable to Share Our Strength as of September 25, 2019.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts raised through donations	—	$	—	$	190	$	—	$	190
Costs incurred for free shakes redeemed	General and administrative expenses	$	—	$	30	$	—	$	30

Shake Shack Inc. Form 10-Q | 27

Olo, Inc.

The Chairman of our Board of Directors serves as a director of Olo, Inc. (formerly known as "Mobo Systems, Inc."), a platform we use in connection with our mobile ordering application. No amounts were due to Olo as of September 23, 2020 and December 25, 2019, respectively.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to Olo	Other operating expenses	$	75	$	44	$	169	$	122

Square, Inc.

Our Chief Executive Officer is a member of the Board of Directors of Square, Inc. ("Square"). We currently use certain point-of-sale applications, payment processing services, hardware and other enterprise platform services in connection with the processing of a limited amount of sales at certain of our locations, sales for certain off-site events and in connection with our kiosk technology. No amounts were due to Square as of September 23, 2020 and December 25, 2019, respectively.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to Square	Other operating expenses	$	419	$	487	$	1,208	$	1,195

Tax Receivable Agreement

As described in Note 12, Income Taxes, we entered into a tax receivable agreement with certain members of SSE Holdings that provides for the payment by us of 85% of the amount of tax benefits, if any, that Shake Shack actually realizes or in some cases is deemed to realize as a result of certain transactions.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to members (inclusive of interest)	Other current liabilities	$	—	$	—	$	6,643	$	707

	Classification	September 23 2020		December 25 2019
Amounts due under the Tax Receivable Agreement	Other current liabilities Liabilities under tax receivable agreement, net of current portion	$	228,197	$	234,426

Distributions to Members of SSE Holdings

Under the terms of the SSE Holdings LLC Agreement, SSE Holdings is obligated to make tax distributions to its members. No tax distributions were payable to non-controlling interest holders as of September 23, 2020 and December 25, 2019, respectively.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to non-controlling interest holders	Net income attributable to non-controlling interests	$	164	$	39	$	478	$	1,706

Shake Shack Inc. Form 10-Q | 28

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.

This section and other parts of this Quarterly Report on Form 10-Q ("Form 10-Q") contain 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 are forward-looking statements. Forward-looking statements discuss our current expectations and projections relating to our financial position, results of operations, plans, objectives, future performance and business. You can identify forward-looking statements by the fact that they do not relate strictly to any 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. You should evaluate all forward-looking statements made in this Form 10-Q in the context of the risks and uncertainties disclosed in our Annual Report on Form 10-K for the fiscal year ended December 25, 2019 ("2019 Form 10-K") and Quarterly Report on Form 10-Q for the quarterly period ended June 24, 2020. The forward-looking statements included in this Form 10-Q are made only as of the date hereof. We undertake 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.

The following discussion should be read in conjunction with our 2019 Form 10-K and the condensed consolidated financial statements and notes thereto included in Part I, Item 1 of this Form 10-Q. All information presented herein is based on our fiscal calendar. Unless otherwise stated, references to particular years, quarters, months or periods refer to our fiscal years and the associated quarters, months and periods of those fiscal years.

OVERVIEW

Shake Shack is a modern day "roadside" burger stand serving a classic American menu of premium burgers, chicken sandwiches, hot dogs, crinkle cut fries, shakes, frozen custard, beer and wine. As of September 23, 2020, there were 298 Shacks in operation system-wide, of which 175 were domestic Company-operated Shacks, 22 were domestic licensed Shacks and 101 were international licensed Shacks.

Recent Developments and Trends

We have experienced steady recovery in the business during the third quarter of 2020, and through October 21 ("fiscal October"), all while continuing to support our Shack teams, our guests and the communities in which we operate during the COVID-19 global pandemic. COVID-19 was officially declared a global pandemic by the World Health Organization in March 2020, and the virus has impacted all global economies, resulting in varying levels of restrictions and shutdowns implemented by national, state, and local authorities. In response to the outbreak, in March 2020, we closed all dining rooms and temporarily shifted to a “to-go” only operating model in all of our domestic Company-operated Shacks. With a prioritization on health and safety, we have steadily re-opened Shacks under modified operations to meet public health guidelines and evolving customer behaviors and expectations. Nearly all domestic Company-operated Shacks were open as of the end of the third quarter 2020 and through fiscal October. As of the end of fiscal October, approximately 80% of our domestic Company-operated Shacks had open dining rooms with varying capacity restrictions, with the majority of Shacks also utilizing outdoor patio space, whenever possible.

Same-Shack sales improved across all regions on a sequential basis, with performance driven by increases in in-Shack dining in both urban and suburban Shacks, combined with high levels of retention of digital sales since fiscal May. Most notably, same-Shack sales have improved sequentially over every single one of the last six months. During the third quarter of 2020, same-Shack sales were down 31.7% compared to the same period last year, with urban Shacks down 43% and suburban Shacks down 16% compared to the same period last year. Our third quarter 2020 same-Shack sales reflect sequential improvement against the prior quarter, in which same-Shack sales were down 49.0%, with urban Shacks down 57% and suburban Shacks down 38%. Subsequent to the third quarter of 2020, in fiscal October 2020, same-Shack sales were down 21%, with urban Shacks down 33% and suburban Shacks down 4% compared to the same period last year. Urban Shacks represent approximately half the Shacks in the comparable base, yet accounted for approximately 60% of same-Shack sales prior to the COVID-19 outbreak. As expected, urban locations are still acutely impacted by the pandemic and suburban locations continue to

Shake Shack Inc. Form 10-Q | 29

recover at a faster pace. New York City, particularly Manhattan, continues to lag other regions and we expect this to be an ongoing trend until the city fully recovers. New York City same-Shack sales have, however, shown continued sequential improvement, being down 49% in the third quarter 2020 compared to down 64% in the second quarter, and now down 40% in fiscal October, versus the same periods last year. Manhattan will continue to have a material and outweighed impact on New York City’s results and those of the Company overall, with Manhattan still down 60% in same-Shack sales during the third quarter 2020, versus down 69% in the second quarter, and now down 51% in fiscal October.

During the third quarter of 2020, total digital sales, including orders placed on the Shake Shack app, website and third party delivery platforms, represented 60% of total Shack sales. As in-Shack sales improved throughout the period, we also maintained a high level of digital retention, with more than 90% of digital sales retained in fiscal October compared to the high point in fiscal May. During the third quarter and similar to second quarter trends, our native web and app channels, when combined, continued to be the fastest growing channel on a year-on-year basis, with sales more than three times the prior year levels. In the second quarter 2020, we added over 800,000 first-time purchasers to the app and web channels between early March and the end of July. This trend has continued through fiscal October, increasing to over 1.4 million first-time purchasers on those channels since early March.

The following table presents fiscal monthly information about our current trends in Shack sales.

	First Quarter			Second Quarter									Third Quarter									Fourth Quarter
(dollar amounts in thousands)	March 25			April 22			May 20			June 24			July 22			August 19			September 23			October 21
Average weekly sales*	$	56		$	32		$	50		$	52		$	56		$	59		$	61		$	62
Total year-over-year sales growth (decline)	(11)		%	(56)		%	(32)		%	(32)		%	(23)		%	(20)		%	(10)		%	(5)		%
Same-Shack sales %	(29)		%	(64)		%	(42)		%	(42)		%	(39)		%	(34)		%	(23)		%	(21)		%

*Average weekly sales is calculated by dividing total Shack sales by the number of operating weeks for all Shacks in operation during the period. For Shacks that are not open for the entire period, fractional adjustments are made to the number of operating weeks open such that it corresponds to the period of associated sales.

Our licensed business has shown gradual improvement. Our licensed airport and stadium business, however, continues to be deeply impacted, with only nine of the 22 domestic licensed Shacks open as of the end of fiscal October. The following table presents fiscal monthly information about our licensed sales trends.

	First Quarter			Second Quarter									Third Quarter									Fourth Quarter
(dollar amounts in millions)	March 25			April 22			May 20			June 24			July 22			August 19			September 23			October 21
Weekly licensed sales*	$	4.6		$	2.0		$	2.4		$	3.5		$	4.6		$	5.4		$	5.7		$	5.9
Total year-over-year licensed sales growth (decline)	13		%	(65)		%	(58)		%	(47)		%	(32)		%	(23)		%	(9)		%	(10)		%
Number of open licensed Shacks	96			56			59			91			98			104			105			107

* Weekly licensed sales is an operating measure and consists of sales from domestic licensed Shacks and international licensed Shacks. We do 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.

Given the substantial uncertainty and resulting material economic impact caused by the COVID-19 pandemic, we are not providing full guidance for the fiscal year ending December 30, 2020. While we are confident in a full, long term recovery, the timing of that return to pre-COVID levels is highly dependent upon the return of the high traffic areas that contributed to many of the strongest Shack sales, including those most reliant on travel, schools, offices and major gatherings, as well as ultimately, fully open dining rooms. The timing of that recovery remains unknown today. With the colder weather and the increasing number of reported COVID cases, it is expected that sales over the coming months will be pressured. We have the benefit of a 53rd week in this fiscal year which will be accretive on an absolute dollar basis, but the underlying business continues to face a very challenging and volatile operating environment certainly through the end of this year.

30 | Shake Shack Inc. Form 10-Q

Development Highlights

During the third quarter 2020, we opened four new domestic Company-operated Shacks, five new international licensed Shacks, and one domestic licensed Shack. These openings were partially offset by the COVID-related closure of three international licensed Shacks and one domestic licensed Shack, including the Shack located in Terminal 3 of the LAX airport.

Location	Type	Opening Date
Shanghai, China — Grand Gateway	International Licensed	6/28/2020
Palm Beach Gardens, FL — Gardens Mall	Domestic Company-Operated	7/7/2020
Dubai, United Arab Emirates — Deira City Centre	International Licensed	7/8/2020
Daegu, South Korea — Daegu Dongseongro	International Licensed	7/10/2020
Singapore — Orchard Road	International Licensed	8/5/2020
Beijing, China — Taikoo Li Sanlitum	International Licensed	8/12/2020
Salt Lake City, UT — Salt Lake City International Airport	Domestic Licensed	9/15/2020
Seattle, WA — University Village	Domestic Company-Operated	9/17/2020
Roseville, CA — Galleria at Roseville	Domestic Company-Operated	9/21/2020
Santa Clara, CA — Valley Fair	Domestic Company-Operated	9/22/2020

We expect to reach a total of 18 to 20 new Company-operated Shacks by the end of fiscal 2020. Furthermore, we expect to open five to six new licensed Shacks in the fourth quarter 2020, ending the year with 12 to 14, net licensed Shacks in total for fiscal 2020. Looking to the next fiscal year, we expect to open between 35 and 40 new Company-operated Shacks in fiscal 2021, a number of which should open in the first half of fiscal 2021. Additionally, we expect to open 15 to 20 new licensed Shacks in fiscal 2021.

Liquidity Update

In March 2020, we drew down the full $50.0 million available under the Revolving Credit Facility, of which the full amount was repaid, plus interest, in fiscal June 2020. In fiscal April 2020, we raised $135.9 million of proceeds, net of underwriting discounts and commissions, from the sale of 3,416,070 shares of its Class A common stock in an underwritten offering, and $9.8 million of proceeds, net of commissions, from the sale of 233,467 shares of its Class A common stock pursuant to an "at-the-market" equity offering program. See “Liquidity and Capital Resources,” herein, for more information.

Shake Shack Inc. Form 10-Q | 31

Financial Highlights for the Third Quarter 2020

▪Total revenue in the third quarter 2020 decreased 17.3% to $130.4 million versus the same period last year, showing sequential improvement when compared to a decline of 39.9% in the prior quarter. Further improvement carried through fiscal October, with a decline of 5.7% versus the same period last year.

▪Shack sales in the third quarter 2020 decreased 17.1% to $126.3 million versus the same period last year, showing sequential improvement when compared to a decline of 39.5% in the prior quarter. Total Shack sales improved further in fiscal October with a decline of 5.3% versus the same period last year.

▪Same-Shack sales sequentially improved every fiscal month since fiscal April, down 31.7% in the third quarter 2020 versus the same period last year, compared to down 49.0% in the prior quarter. In fiscal October, Same-Shack sales continued to recover, with a decline of 21% versus the same period last year. Within same-Shack sales:

◦Suburban same-Shack sales were down 16% during the third quarter 2020 versus the same period last year, compared to down 38% in the prior quarter, and improving to down 4% in fiscal October.

◦Urban same-Shack sales were down 43% during the third quarter 2020 versus the same period last year, compared to down 57% in the prior quarter, and improving to down 33% in fiscal October.

▪Licensed revenue in the third quarter decreased 23.8% to $4.1 million versus the same period last year, showing sequential improvement when compared to a decline of 53.1% in the prior quarter.

▪Shack system-wide sales in the third quarter decreased 18.4% to $195.1 million, versus the same period last year, showing sequential improvement when compared to down 45.2% in the prior quarter, and improving to down 7.1% in fiscal October.

▪Operating loss in the third quarter was $6.8 million, compared to operating income of $8.2 million in the same period last year, showing sequential improvement when compared to an operating loss of $24.1 million in the prior quarter.

▪Shack-level operating profit*, a non-GAAP measure, decreased 46.9% to $18.7 million, or 14.8% of Shack sales in the third quarter 2020, versus a Shack-level operating profit of $1.9 million, or 2.2% of Shack sales in the prior quarter.

▪Net loss was $6.1 million and adjusted EBITDA*, a non-GAAP measure, was $8.2 million in the third quarter 2020, compared to net income of $11.4 million and adjusted EBITDA of $23.3 million in the same period last year.

▪Net loss attributable to Shake Shack Inc. was $5.6 million and adjusted pro forma net loss*, a non-GAAP measure, was $4.4 million, or a loss of $0.11 per fully exchanged and diluted share in the third quarter 2020, compared to net income attributable to Shake Shack Inc. of $10.3 million, adjusted pro forma net income of $10.0 million, or $0.26 per fully exchanged and diluted share, in the same period last year.

▪Six system-wide Shack openings, comprised of four domestic Company-operated Shacks and two net licensed Shacks.

▪Cash and marketable securities on hand was $191.8 million as of September 23, 2020.

* This represents a non-GAAP measure. Reconciliations to the most directly comparable financial measures presented in accordance with GAAP are set forth in the schedules within “Non-GAAP Financial Measures,” herein. See “Non-GAAP Financial Measures.”

32 | Shake Shack Inc. Form 10-Q

RESULTS OF OPERATIONS

The following table summarizes our results of operations for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019:

		Thirteen Weeks Ended								Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020				September 25 2019				September 23 2020				September 25 2019
Shack sales		$	126,288	96.8	%	$	152,366	96.6	%	$	353,855	96.9	%	$	428,811	96.8	%
Licensing revenue		4,113		3.2	%	5,396		3.4	%	11,502		3.1	%	14,273		3.2	%
TOTAL REVENUE		130,401		100.0	%	157,762		100.0	%	365,357		100.0	%	443,084		100.0	%
Shack-level operating expenses(1):
	Food and paper costs	37,903		30.0	%	44,159		29.0	%	107,494		30.4	%	125,049		29.2	%
	Labor and related expenses	37,898		30.0	%	41,601		27.3	%	110,597		31.3	%	118,891		27.7	%
	Other operating expenses	18,743		14.8	%	18,947		12.4	%	50,826		14.4	%	51,270		12.0	%
	Occupancy and related expenses	13,093		10.4	%	12,537		8.2	%	37,974		10.7	%	35,309		8.2	%
General and administrative expenses		14,962		11.5	%	17,090		10.8	%	45,170		12.4	%	46,420		10.5	%
Depreciation expense		12,376		9.5	%	10,474		6.6	%	36,233		9.9	%	29,239		6.6	%
Pre-opening costs		1,822		1.4	%	4,487		2.8	%	5,799		1.6	%	10,678		2.4	%
Impairment and loss on disposal of assets		402		0.3	%	303		0.2	%	2,924		0.8	%	1,031		0.2	%
TOTAL EXPENSES		137,199		105.2	%	149,598		94.8	%	397,017		108.7	%	417,887		94.3	%
OPERATING INCOME (LOSS)		(6,798)		(5.2)	%	8,164		5.2	%	(31,660)		(8.7)	%	25,197		5.7	%
Other income, net		34		—	%	248		0.2	%	335		0.1	%	1,259		0.3	%
Interest expense		(143)		(0.1)	%	(133)		(0.1)	%	(697)		(0.2)	%	(302)		(0.1)	%
INCOME (LOSS) BEFORE INCOME TAXES		(6,907)		(5.3)	%	8,279		5.2	%	(32,022)		(8.8)	%	26,154		5.9	%
Benefit from income taxes		(797)		(0.6)	%	(3,144)		(2.0)	%	(6,802)		(1.9)	%	(47)		—	%
NET INCOME (LOSS)		(6,110)		(4.7)	%	11,423		7.2	%	(25,220)		(6.9)	%	26,201		5.9	%
Less: net income (loss) attributable to non-controlling interests		(551)		(0.4)	%	1,079		0.7	%	(2,490)		(0.7)	%	4,281		1.0	%
NET INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC.		$	(5,559)	(4.3)	%	$	10,344	6.6	%	$	(22,730)	(6.2)	%	$	21,920	4.9	%

(1)    As a percentage of Shack sales.

Shack Sales

Shack sales represent the aggregate sales of food, beverages and Shake Shack branded merchandise at our domestic Company-operated Shacks. Shack sales in any period are directly influenced by the number of operating weeks in such period, the number of open Shacks and same-Shack sales. Same-Shack sales means, for any reporting period, sales for the comparable Shack base, which we define as the number of domestic Company-operated Shacks open for 24 months or longer.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Shack sales		$	126,288		$	152,366		$	353,855		$	428,811
	Percentage of total revenue	96.8		%	96.6		%	96.9		%	96.8		%
	Dollar change compared to prior year	$	(26,078)					$	(74,956)
	Percentage change compared to prior year	(17.1)		%				(17.5)		%

Shake Shack Inc. Form 10-Q | 33

The decrease in Shack sales for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to lost sales related to the impact from the COVID-19 pandemic. These decreases were partially offset by the opening of 24 new domestic Company-operated Shacks between September 25, 2019 and September 23, 2020.

Same-Shack sales improved across all regions on a sequential basis, with performance driven by increases in in-Shack dining in both urban and suburban Shacks, combined with a high retention of digital sales from the high point since fiscal May. Most notably, same-Shack sales have improved sequentially over each of the last six months. During the third quarter of 2020, same-Shack sales were down 31.7% compared to the same period last year, with urban Shacks down 43% and suburban Shacks down 16% compared to the same period last year. The decrease in same-Shack sales for the quarter was driven by a 42.0% decrease in traffic partially offset by an increase in price mix of 10.3%. This increase in price mix was driven by a significant increase in average check, primarily from a higher digital sales mix combined with an overall increase in check, due to higher items per order since the start of the pandemic. For the thirty-nine weeks ended September 23, 2020, same-Shack sales were down 31.5%, primarily driven by a 39.4% decrease in guest traffic partially offset by an increase in price mix of 7.9%, also driven by a higher total average check. For the purpose of calculating same-Shack sales growth for the thirteen and thirty-nine weeks ended September 23, 2020, Shack sales for 102 Shacks were included in the comparable Shack base.

Subsequent to the third quarter of 2020, in fiscal October 2020, same-Shack sales were down 21%, with our urban Shacks down 33% and suburban Shacks down 4% compared to the same period last year.

Licensing Revenue

Licensing revenue is comprised of license fees, opening fees for certain licensed Shacks and territory fees. License fees are calculated as a percentage of sales and territory fees are payments for the exclusive right to develop Shacks in a specific geographic area.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Licensing revenue		$	4,113		$	5,396		$	11,502		$	14,273
	Percentage of total revenue	3.2		%	3.4		%	3.1		%	3.2		%
	Dollar change compared to prior year	$	(1,283)					$	(2,771)
	Percentage change compared to prior year	(23.8)		%				(19.4)		%

The decreases in licensing revenue for the thirteen and thirty-nine weeks ended September 23, 2020 were primarily due to reduced sales related to the COVID-19 pandemic, partially offset by a net increase of 20 Shacks opened between September 25, 2019 and September 23, 2020. Our licensed business has shown improvement, with our licensed airport and stadium business continuing to be the most deeply impacted, with only nine of the 22 domestic licensed Shacks open as of fiscal October.

Food and Paper Costs

Food and paper costs include the direct costs associated with food, beverage and packaging of our menu items. The components of food and paper costs are variable by nature, changing with sales volume, and are impacted by menu mix and fluctuations in commodity costs, as well as geographic scale and proximity.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Food and paper costs		$	37,903		$	44,159		$	107,494		$	125,049
	Percentage of Shack sales	30.0		%	29.0		%	30.4		%	29.2		%
	Dollar change compared to prior year	$	(6,256)					$	(17,555)
	Percentage change compared to prior year	(14.2)		%				(14.0)		%

The decreases in food and paper costs for the thirteen and thirty-nine weeks ended September 23, 2020 were primarily due to a decline in sales volume related to the COVID-19 pandemic, partially offset by the opening of 24 new domestic company-operated Shacks between September 25, 2019 and September 23, 2020.

As a percentage of Shack sales, the increase in food and paper costs for the thirteen weeks ended September 23, 2020 was primarily due to higher paper and packaging costs, with all orders packaged as 'to go' orders.

34 | Shake Shack Inc. Form 10-Q

For the thirty-nine weeks ended September 23, 2020, as a percentage of Shack sales, the increase in food and paper costs was primarily due to higher paper and packaging costs and significant inflation in beef prices, partially offset by lower chicken costs. For the large part of the second quarter of 2020, we experienced significant inflation in beef, with costs nearly double that of last year for most of June. Beef prices have since returned to more normalized levels in the third quarter of 2020. Furthermore, we had increased paper and packaging costs as a result of packaging all orders as 'to go' orders during the second and third quarter of 2020.

Labor and Related Expenses

Labor and related expenses include domestic Company-operated Shack-level hourly and management wages, bonuses, payroll taxes, equity-based compensation, workers' compensation expense and medical benefits. As we expect with other variable expense items, we expect labor costs to grow as our Shack sales grow. Factors that influence labor costs include minimum wage and payroll tax legislation, health care costs, size and location of the Shack and the performance of our domestic Company-operated Shacks.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Labor and related expenses		$	37,898		$	41,601		$	110,597		$	118,891
	Percentage of Shack sales	30.0		%	27.3		%	31.3		%	27.7		%
	Dollar change compared to prior year	$	(3,703)					$	(8,294)
	Percentage change compared to prior year	(8.9)		%				(7.0)		%

The decreases in labor and related expenses for the thirteen and thirty-nine weeks ended September 23, 2020 were primarily due to reductions in staffing expenses across all Shacks associated with the impact of COVID-19. These decreases were partially offset by the opening of 24 new domestic Company-operated Shacks between September 25, 2019 and September 23, 2020, and a number of incremental payroll costs to support our Shack employees. These incremental payroll costs were related to a temporary 10% premium pay raise to hourly employees through the end of August, guaranteed bonuses for Shack teams, and payments related to scheduling changes for hourly team members as teams navigated the challenging operating conditions caused by COVID-19. This investment in our teams had an incremental $2.1 million impact on our results of operations during the third quarter of 2020, and was in addition to the $2.4 million recognized during the second quarter of 2020.

As a percentage of Shack sales, the increase in labor and related expenses for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to sales deleverage associated with the impact of COVID-19 and, to a lesser extent, increases in starting wages, partially offset by the reduction of labor hours.

Other Operating Expenses

Other operating expenses consist of Shack-level marketing expenses, repairs and maintenance, utilities and other operating expenses incidental to operating our domestic Company-operated Shacks, such as non-perishable supplies, credit card fees and property insurance.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Other operating expenses		$	18,743		$	18,947		$	50,826		$	51,270
	Percentage of Shack sales	14.8		%	12.4		%	14.4		%	12.0		%
	Dollar change compared to prior year	$	(204)					$	(444)
	Percentage change compared to prior year	(1.1)		%				(0.9)		%

The decrease in other operating expenses for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to the reduction in expenses across all Shacks associated with the impact of COVID-19, including reduced maintenance expenses within the Shacks which is not expected to continue as we enter the fourth quarter, partially offset by higher delivery expense as a result of digital growth, as well as the opening of 24 new domestic Company-operated Shacks between September 25, 2019 and September 23, 2020.

Shake Shack Inc. Form 10-Q | 35

As a percentage of Shack sales, the increase in other operating expenses for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to higher delivery commissions as a result of digital growth and sales deleverage associated with the impact of COVID-19. For the thirteen weeks ended September 23, 2020, the increase was also partially offset by lower maintenance expenses.

Occupancy and Related Expenses

Occupancy and related expenses consist of Shack-level occupancy expenses (including rent, common area expenses and certain local taxes), and exclude occupancy expenses associated with unopened Shacks, which are recorded separately in pre-opening costs.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Occupancy and related expenses		$	13,093		$	12,537		$	37,974		$	35,309
	Percentage of Shack sales	10.4		%	8.2		%	10.7		%	8.2		%
	Dollar change compared to prior year	$	556					$	2,665
	Percentage change compared to prior year	4.4		%				7.5		%

The increase in occupancy and related expenses for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to the opening of 24 new domestic Company-operated Shacks between September 25, 2019 and September 23, 2020, partially offset by lower variable rent expense associated with lower revenue.

As a percentage of Shack sales, the increase in occupancy and related expenses for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to sales deleverage associated with the impact of COVID-19, partially offset by lower variable rent expense associated with lower revenue.

General and Administrative Expenses

General and administrative expenses consist of costs associated with corporate and administrative functions that support Shack development and operations, as well as equity-based compensation expense.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
General and administrative expenses		$	14,962		$	17,090		$	45,170		$	46,420
	Percentage of total revenue	11.5		%	10.8		%	12.4		%	10.5		%
	Dollar change compared to prior year	$	(2,128)					$	(1,250)
	Percentage change compared to prior year	(12.5)		%				(2.7)		%

The decreases in general and administrative expenses for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to disciplined cost reduction across the majority of discretionary spend categories and reduced home office compensation expense, partially offset by increased expenses across marketing and technology to support digital initiatives.

As a percentage of total revenue, the increase in general and administrative expenses for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to sales deleverage associated with the impact of COVID-19.

Depreciation Expense

Depreciation expense consists of the depreciation of fixed assets, including leasehold improvements and equipment.

36 | Shake Shack Inc. Form 10-Q

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Depreciation expense		$	12,376		$	10,474		$	36,233		$	29,239
	Percentage of total revenue	9.5		%	6.6		%	9.9		%	6.6		%
	Dollar change compared to prior year	$	1,902					$	6,994
	Percentage change compared to prior year	18.2		%				23.9		%

The increase in depreciation expense for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to incremental depreciation of capital expenditures related to the opening of 24 new domestic Company-operated Shacks between September 25, 2019 and September 23, 2020.

As a percentage of total revenue, the increase in depreciation expense for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to sales deleverage associated with the impact of COVID-19.

Pre-Opening Costs

Pre-opening costs consist primarily of legal fees, rent, managers' salaries, training costs, employee payroll and related expenses, costs to relocate and compensate Shack management teams prior to an opening and wages, travel and lodging costs for our opening training team and other supporting team members. All such costs incurred prior to the opening of a domestic Company-operated Shack are expensed in the period in which the expense was incurred. Pre-opening costs can fluctuate significantly from period to period, based on the number and timing of domestic Company-operated Shack openings and the specific pre-opening costs incurred for each domestic Company-operated Shack. Additionally, domestic Company-operated Shack openings in new geographic market areas may initially experience higher pre-opening costs than our established geographic market areas, such as the New York City metropolitan area, where we have greater economies of scale and incur lower travel and lodging costs for our training team.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Pre-opening costs		$	1,822		$	4,487		$	5,799		$	10,678
	Percentage of total revenue	1.4		%	2.8		%	1.6		%	2.4		%
	Dollar change compared to prior year	$	(2,665)					$	(4,879)
	Percentage change compared to prior year	(59.4)		%				(45.7)		%

The decrease in pre-opening costs for the thirteen and thirty-nine weeks ended September 23, 2020 was due to the lower number of new domestic Company-operated Shacks opened during the current period compared to the prior-year period, as well as those expected to open.

Impairment and Loss on Disposal of Assets

Impairment and loss on disposal of assets include impairment charges related to our long-lived assets, which includes property and equipment, as well as operating and finance lease assets. Additionally, impairment and loss on disposal of assets includes the net book value of assets that have been retired and consists primarily of furniture, equipment and fixtures that were replaced in the normal course of business.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Impairment and loss on disposal of assets		$	402		$	303		$	2,924		$	1,031
	Percentage of total revenue	0.3		%	0.2		%	0.8		%	0.2		%
	Dollar change compared to prior year	$	99					$	1,893
	Percentage change compared to prior year	32.7		%				183.6		%

The increase in impairment and loss on disposal of assets for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to the number of Shacks maturing in our base and renovations. For the thirty-nine weeks ended September 23, 2020, the increase was also due to an asset impairment charge of $1.1 million recorded during the first quarter of 2020.

Shake Shack Inc. Form 10-Q | 37

Other Income, Net

Other income, net consists of interest income, dividend income and net unrealized and realized gains and losses from the sale of marketable securities.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Other income, net		$	34		$	248		$	335		$	1,259
	Percentage of total revenue	—		%	0.2		%	0.1		%	0.3		%
	Dollar change compared to prior year	$	(214)					$	(924)
	Percentage change compared to prior year	(86.3)		%				(73.4)		%

The decrease in other income, net for the thirteen weeks ended September 23, 2020 was primarily due to a decrease in dividend income. For the thirty-nine weeks ended September 23, 2020, the decrease was primarily due to a decrease in dividend income and unrealized losses related to our investments in marketable securities.

Interest Expense

Interest expense primarily consists of interest on the current portion of our liabilities under the Tax Receivable Agreement, imputed interest related to our financing equipment leases, amortization of deferred financing costs, imputed interest on deferred compensation, imputed interest on our deemed landlord financing liability, and interest and fees on our Revolving Credit Facility.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Interest expense		$	(143)		$	(133)		$	(697)		$	(302)
	Percentage of total revenue	(0.1)		%	(0.1)		%	(0.2)		%	(0.1)		%
	Dollar change compared to prior year	$	(10)					$	(395)
	Percentage change compared to prior year	7.5		%				130.8		%

The increases in interest expense for the thirteen and thirty-nine weeks ended September 23, 2020 was primarily due to an increase in interest and fees associated with our Revolving Credit Facility in the current year.

Income Tax Benefit

We are the sole managing member of SSE Holdings, which is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, SSE Holdings is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by SSE Holdings is passed through to and included in the taxable income or loss of its members, including us, on a pro rata basis. We are subject to U.S. federal income taxes, in addition to state and local income taxes with respect to our allocable share of any taxable income or loss generated by SSE Holdings.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Income tax benefit		$	(797)		$	(3,144)		$	(6,802)		$	(47)
	Percentage of total revenue	(0.6)		%	(2.0)		%	(1.9)		%	—		%
	Dollar change compared to prior year	$	2,347					$	(6,755)
	Percentage change compared to prior year	(74.7)		%				14,372.3		%

Our effective income tax rates for the thirteen weeks ended September 23, 2020 and September 25, 2019 were 11.5% and (38.0)%, respectively. The increase was primarily driven by lower pre-tax book income resulting in a loss, causing the tax credits to have an increasing effect on the tax rate, as well as the recognition of a valuation allowance against foreign tax credits that are not expected to be realized before the expiration of the carryforward period. Additionally, an increase in our ownership interest in SSE Holdings increases our share of the taxable income (loss) of SSE Holdings. Our weighted-average ownership interest in SSE Holdings was 92.5% and 85.6% for the thirteen weeks ended September 23, 2020 and September 25, 2019, respectively.

38 | Shake Shack Inc. Form 10-Q

Our effective income tax rates for the thirty-nine weeks ended September 23, 2020 and September 25, 2019 were 21.2% and (0.2)%, respectively. The increase was primarily driven by lower pre-tax book income resulting in a loss, causing the tax credits to have an increasing effect on the tax rate, as well as the recognition of a valuation allowance against foreign tax credits that are not expected to be realized before the expiration of the carryforward period. These were partially offset by a reduction in the tax effect of changes related to the adoption of new accounting standards, for which there were none during the thirty-nine weeks ended September 23, 2020. Additionally, as noted above, an increase in our ownership interest in SSE Holdings increases our share of the taxable income (loss) of SSE Holdings. Our weighted-average ownership interest in SSE Holdings was 92.1% and 82.1% for the thirty-nine weeks ended September 23, 2020 and September 25, 2019, respectively.

Net Income (Loss) Attributable to Non-Controlling Interests

We are the sole managing member of SSE Holdings and have the sole voting power in, and control the management of, SSE Holdings. Accordingly, we consolidate the financial results of SSE Holdings and report a non-controlling interest on our Condensed Consolidated Statements of Income, representing the portion of net income attributable to the other members of SSE Holdings. The Third Amended and Restated Limited Liability Company Agreement of SSE Holdings provides that holders of LLC Interests may, from time to time, require SSE Holdings to redeem all or a portion of their LLC Interests for newly-issued shares of Class A common stock on a one-for-one basis. In connection with any redemption or exchange, we will receive a corresponding number of LLC Interests, increasing our total ownership interest in SSE Holdings. The weighted average ownership percentages for the applicable reporting periods are used to attribute net income and other comprehensive income to Shake Shack Inc. and the non-controlling interest holders.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Net income (loss) attributable to non-controlling interests		$	(551)		$	1,079		$	(2,490)		$	4,281
	Percentage of total revenue	(0.4)		%	0.7		%	(0.7)		%	1.0		%
	Dollar change compared to prior year	$	(1,630)					$	(6,771)
	Percentage change compared to prior year	(151.1)		%				(158.2)		%

The decreases in net income (loss) attributable to non-controlling interests for the thirteen and thirty-nine weeks ended September 23, 2020 were primarily due to a decline in net results causing a loss for the period, and a decrease in the non-controlling interest holders' weighted average ownership, which was 7.5% and 14.4% for the thirteen weeks ended September 23, 2020 and September 25, 2019, respectively, and 7.9% and 17.9% for the thirty-nine weeks ended September 23, 2020 and September 25, 2019, respectively.

NON-GAAP FINANCIAL MEASURES

To supplement the consolidated financial statements, which are prepared and presented in accordance with U.S. generally accepted accounting principles (“GAAP”), we use the following non-GAAP financial measures: Shack-level operating profit, Shack-level operating profit margin, EBITDA, adjusted EBITDA, adjusted EBITDA margin, adjusted pro forma net income (loss) and adjusted pro forma earnings (loss) per fully exchanged and diluted share (collectively the "non-GAAP financial measures").

Shake Shack Inc. Form 10-Q | 39

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.

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 we believe are useful measures to evaluate the performance and profitability of our Shacks. Additionally, Shack-level operating profit and Shack-level operating profit margin are key metrics used internally by our management to develop internal budgets and forecasts, as well as assess the performance of our Shacks relative to budget and against prior periods. It is also used to evaluate employee compensation as it serves as a metric in certain of our performance-based employee bonus arrangements. We believe presentation of Shack-level operating profit and Shack-level operating profit margin provides investors with a supplemental view of our operating performance that can provide meaningful insights to the underlying operating performance of our Shacks, as these measures depict the operating results that are directly impacted by our Shacks and exclude items that may not be indicative of, or are unrelated to, the ongoing operations of our Shacks. It may also assist investors to evaluate our performance relative to peers of various sizes and maturities and provides greater transparency with respect to how our management evaluates our business, as well as our 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 our Shacks. Therefore, this measure may not provide a complete understanding of the operating results of our Company as a whole and Shack-level operating profit and Shack-level operating profit margin should be reviewed in conjunction with our GAAP financial results. A reconciliation of Shack-level operating profit to operating income (loss), the most directly comparable GAAP financial measure, is as follows.

		Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(dollar amounts in thousands)		September 23 2020			September 25 2019			September 23 2020			September 25 2019
Operating income (loss)		$	(6,798)		$	8,164		$	(31,660)		$	25,197
Less:
	Licensing revenue	4,113			5,396			11,502			14,273
Add:
	General and administrative expenses	14,962			17,090			45,170			46,420
	Depreciation expense	12,376			10,474			36,233			29,239
	Pre-opening costs	1,822			4,487			5,799			10,678
	Impairment and loss on disposal of assets	402			303			2,924			1,031
Shack-level operating profit		$	18,651		$	35,122		$	46,964		$	98,292
Total revenue		$	130,401		$	157,762		$	365,357		$	443,084
Less: licensing revenue		4,113			5,396			11,502			14,273
Shack sales		$	126,288		$	152,366		$	353,855		$	428,811
Shack-level operating profit margin		14.8		%	23.1		%	13.3		%	22.9		%

40 | Shake Shack Inc. Form 10-Q

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 costs, impairment and loss on the disposal of assets, amortization of cloud-based software implementation costs, as well as certain non-recurring items that we don't believe directly reflect our core operations and may not be indicative of our recurring business operations.

How These Measures Are Useful

When used in conjunction with GAAP financial measures, EBITDA and adjusted EBITDA are supplemental measures of operating performance that we believe are useful measures to facilitate comparisons to historical performance and competitors' operating results. Adjusted EBITDA is a key metric used internally by our management to develop internal budgets and forecasts and also serves as a metric in our performance-based equity incentive programs and certain of our bonus arrangements. We believe presentation of EBITDA and adjusted EBITDA provides investors with a supplemental view of our operating performance that facilitates analysis and comparisons of our ongoing business operations because they exclude items that may not be indicative of our 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 our performance and should be reviewed in conjunction with our GAAP financial measures. A reconciliation of EBITDA and adjusted EBITDA to net income, the most directly comparable GAAP measure, is as follows.

	Thirteen Weeks Ended						Thirty-Nine Weeks Ended
(in thousands)	September 23 2020			September 25 2019			September 23 2020			September 25 2019
Net income (loss)	$	(6,110)		$	11,423		$	(25,220)		$	26,201
Depreciation expense	12,376			10,474			36,233			29,239
Interest expense, net	143			133			697			302
Income tax benefit	(797)			(3,144)			(6,802)			(47)
EBITDA	5,612			18,886			4,908			55,695
Equity-based compensation	1,339			1,884			4,058			5,839
Amortization of cloud-based software implementation costs(1)	458			107			1,086			107
Deferred lease costs(2)	258			743			407			2,043
Impairment and loss on disposal of assets(3)	402			303			2,924			1,031
Other income related to adjustment of liabilities under tax receivable agreement	—			—			—			(14)
Executive transition costs(4)	82			—			150			126
Project Concrete(5)	8			1,346			(229)			2,031
Hong Kong office(6)	—			13			—			184
Other(7)	—			—			285			—
Adjusted EBITDA	$	8,159		$	23,282		$	13,589		$	67,042
Adjusted EBITDA margin(8)	6.3		%	14.8		%	3.7		%	15.1		%

Shake Shack Inc. Form 10-Q | 41

(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)    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)    Represents fees paid in connection with the search and hiring of certain executive and key management positions.

(5)    Represents consulting and advisory fees related to our enterprise-wide system upgrade initiative called Project Concrete.

(6)    Represents costs associated with establishing our first international office in Hong Kong.

(7)    Represents incremental expenses incurred related to an inventory adjustment and certain employee-related expenses.

(8)    Calculated as a percentage of total revenue, which was $130,401 and $365,357 for the thirteen and thirty-nine weeks ended September 23, 2020, respectively, and $157,762 and $443,084 for the thirteen and thirty-nine weeks ended September 25, 2019, respectively.

Adjusted Pro Forma Net Income (Loss) and Adjusted Pro Forma Earnings (Loss) Per Fully Exchanged and Diluted Share

Adjusted pro forma net income (loss) represents net income (loss) attributable to Shake Shack Inc. 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 we do not believe are directly related to our core operations and may not be indicative of our recurring business operations. Adjusted pro forma earnings (loss) per fully exchanged and diluted share is calculated by dividing adjusted pro forma net income (loss) by the weighted-average shares of Class A common stock outstanding, assuming the full exchange of all outstanding LLC Interests, after giving effect to the dilutive effect of outstanding equity-based awards.

How These Measures Are Useful

When used in conjunction with GAAP financial measures, adjusted pro forma net income (loss) and adjusted pro forma earnings (loss) per fully exchanged and diluted share are supplemental measures of operating performance that we believe are useful measures to evaluate our performance period over period and relative to our competitors. By assuming the full exchange of all outstanding LLC Interests, we believe these measures facilitate 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 net income attributable to Shake Shack Inc. driven by increases in our ownership of SSE Holdings, which are unrelated to our operating performance, and excludes items that are non-recurring or may not be indicative of our ongoing operating performance.

Limitations of the Usefulness of These Measures

Adjusted pro forma net income and adjusted pro forma earnings (loss) per fully exchanged and diluted share may differ from similarly titled measures used by other companies due to different methods of calculation. Presentation of adjusted pro forma net income and adjusted pro forma earnings (loss) per fully exchanged and diluted share should not be considered alternatives to net income (loss) and earnings (loss) per share, as determined under GAAP. While these measures are useful in evaluating our performance, it does not account for the earnings attributable to the non-controlling interest holders and therefore does not provide a complete understanding of the net income attributable to Shake Shack Inc. Adjusted pro forma net income (loss) and adjusted pro forma earnings (loss) per fully exchanged and diluted share should be evaluated in conjunction with our GAAP financial results. A reconciliation of adjusted pro forma net income (loss) to net income (loss) attributable to Shake Shack Inc., the most directly comparable GAAP measure, and the computation of adjusted pro forma earnings (loss) per fully exchanged and diluted share are set forth below.

42 | Shake Shack Inc. Form 10-Q

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
(in thousands, except per share amounts)			September 23 2020		September 25 2019		September 23 2020		September 25 2019
Numerator:
	Net income (loss) attributable to Shake Shack Inc.		$	(5,559)	$	10,344	$	(22,730)	$	21,920
	Adjustments:
		Reallocation of net income attributable to non-controlling interests from the assumed exchange of LLC Interests(1)	(551)		1,079		(2,490)		4,281
		Executive transition costs(2)	82		—		150		126
		Project Concrete(3)	8		1,346		(229)		2,031
		Hong Kong office(4)	—		13		—		184
		Other(5)	—		—		285		—
		Other income related to adjustment of liabilities under tax receivable agreement	—		—		—		(14)
		Tax effect of change in tax basis related to the adoption of new accounting standards(6)	—		—		—		1,161
		Income tax (expense) benefit(7)	1,608		(2,765)		3,141		(4,478)
	Adjusted pro forma net income (loss)		$	(4,412)	$	10,017	$	(21,873)	$	25,211
Denominator:
	Weighted-average shares of Class A common stock outstanding—diluted		38,251		32,916		36,668		31,441
	Adjustments:
		Assumed exchange of LLC Interests for shares of Class A common stock(1)	3,114		5,393		3,125		6,674
	Adjusted pro forma fully exchanged weighted-average shares of Class A common stock outstanding—diluted		41,365		38,309		39,793		38,115
Adjusted pro forma earnings (loss) per fully exchanged share—diluted			$	(0.11)	$	0.26	$	(0.55)	$	0.66

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Earnings (loss) per share of Class A common stock - diluted		$	(0.15)	$	0.31	$	(0.62)	$	0.70
	Assumed exchange of LLC Interests for shares of Class A common stock(1)	—		(0.02)		(0.01)		(0.01)
	Non-GAAP adjustments(8)	0.04		(0.03)		0.08		(0.03)
Adjusted pro forma earnings (loss) per fully exchanged share—diluted		$	(0.11)	$	0.26	$	(0.55)	$	0.66

(1)    Assumes the exchange of all outstanding LLC Interests for shares of Class A common stock, resulting in the elimination of the non-controlling interest and recognition of the net income (loss) attributable to non-controlling interests.

(2)    Represents costs incurred in connection with our executive search, including fees paid to an executive recruiting firm.

(3)    Represents consulting and advisory fees related to our enterprise-wide system upgrade initiative called Project Concrete.

(4)    Represents costs associated with establishing our first international office in Hong Kong.

(5)    Represents incremental expenses incurred related to an inventory adjustment and certain employee-related expenses.

(6)    Represents tax effect of change in tax basis related to the adoption of the new lease accounting standard for the thirteen and thirty-nine weeks ended September 25, 2019.

(7)    Represents the tax effect of the aforementioned adjustments and pro forma adjustments to reflect corporate income taxes at assumed effective tax rates of 35.3% and 31.3% for the thirteen and thirty-nine weeks ended September 23, 2020, respectively, and (3.9)% and 11.5% for the thirteen and thirty-nine weeks ended September 25, 2019, respectively.

(8)    Represents the per share impact of non-GAAP adjustments for each period. Refer to the reconciliation of Adjusted Pro Forma Net Income above for further details.

Shake Shack Inc. Form 10-Q | 43

LIQUIDITY AND CAPITAL RESOURCES

Sources and Uses of Cash

Our primary sources of liquidity are cash from operations, cash and cash equivalents on hand, short-term investments and availability under our Revolving Credit Facility. As of September 23, 2020, we maintained a cash and cash equivalents balance of $174.9 million and a short-term investments balance of $16.9 million within Marketable securities.

On June 8, 2018, we filed a Registration Statement on Form S-3 with the SEC which permits us to issue a combination of securities described in the prospectus in one or more offerings from time to time. To date, we have not experienced difficulty accessing the capital markets; however, future volatility in the capital markets may affect our ability to access those markets or increase the costs associated with issuing debt or equity instruments.

Our primary requirements for liquidity are to fund our working capital needs, operating and finance lease obligations, capital expenditures and general corporate needs. Our requirements for working capital are generally not significant because our guests pay for their food and beverage purchases in cash or on debit or credit cards at the time of the sale and we are able to sell many of our inventory items before payment is due to the supplier of such items. Our ongoing capital expenditures are principally related to opening new Shacks, existing Shack capital investments (both for remodels and maintenance), as well as investments in our corporate infrastructure.

In addition, we are obligated to make payments to certain members of SSE Holdings under the Tax Receivable Agreement. As of September 23, 2020, such obligations totaled $228.2 million. Amounts payable under the Tax Receivable Agreement are contingent upon, among other things, (i) generation of future taxable income over the term of the Tax Receivable Agreement and (ii) future changes in tax laws. If we do not generate sufficient taxable income in the aggregate over the term of the Tax Receivable Agreement to utilize the tax benefits, then we would not be required to make the related TRA Payments. Although the amount of any payments that must be made under the Tax Receivable Agreement may be significant, the timing of these payments will vary and will generally be limited to one payment per member per year. The amount of such payments are also limited to the extent we utilize the related deferred tax assets. The payments that we are required to make will generally reduce the amount of overall cash flow that might have otherwise been available to us or to SSE Holdings, but we expect the cash tax savings we will realize from the utilization of the related deferred tax assets to fund the required payments.

COVID-19 Update

In response to the uncertain market conditions resulting from the COVID-19 pandemic, we have taken the following actions in the thirty-nine weeks ended September 23, 2020.

•On April 17, 2020, we announced an ATM Program, under which we may offer and sell shares of our Class A common stock having an aggregate price of up to $75.0 million from time to time. On April 21, 2020, we completed the sale of 233,467 shares of our Class A common stock pursuant to the ATM Program and received $9.8 million of proceeds, net of commissions. The proceeds were used to purchase newly-issued LLC Interests.

•On April 21, 2020, we completed an underwritten offering of 3,416,070 shares of our Class A common stock, resulting in $135.9 million of proceeds, net of underwriting discounts and commissions. The proceeds were used to purchase newly-issued LLC Interests.

•In May 2020, we entered into an amendment to our Revolving Credit Facility that provides for a number of enhanced modifications to reflect the current and ongoing impact from COVID-19. In March 2020, we drew down the full $50,000 available under the Revolving Credit Facility to enhance liquidity and financial flexibility given the uncertain market conditions created by the COVID-19 pandemic. We repaid this amount in full, plus interest, in June 2020. As of September 23, 2020, we were in compliance with all covenants.

We believe our existing cash and marketable securities balances, combined with the actions we have taken in response to COVID-19, will be sufficient to fund our operating and finance lease obligations, capital expenditures, tax receivable agreement obligations and working capital needs for at least the next 12 months and the foreseeable future.

44 | Shake Shack Inc. Form 10-Q

Summary of Cash Flows

The following table presents a summary of our cash flows from operating, investing and financing activities.

	Thirty-Nine Weeks Ended
(in thousands)	September 23 2020		September 25 2019
Net cash provided by operating activities	$	28,498	$	73,043
Net cash used in investing activities	(27,316)		(54,874)
Net cash provided by financing activities	136,602		1,586
Increase in cash	137,784		19,755
Cash at beginning of period	37,099		24,750
Cash at end of period	$	174,883	$	44,505

Operating Activities

For the thirty-nine weeks ended September 23, 2020 net cash provided by operating activities was $28.5 million compared to $73.0 million for the thirty-nine weeks ended September 25, 2019, a decrease of $44.5 million. This decrease was primarily driven by a decrease in Shack-level operating profit due to the impact of COVID-19, partially offset by lower pre-opening costs.

Investing Activities

For the thirty-nine weeks ended September 23, 2020 net cash used in investing activities was $27.3 million compared to $54.9 million for the thirty-nine weeks ended September 25, 2019, a decrease of $27.6 million. This decrease was primarily due to a decrease of $33.9 million in capital expenditures, as well as a decrease of $7.0 million of proceeds from sales of marketable securities.

Financing Activities

For the thirty-nine weeks ended September 23, 2020 net cash provided by financing activities was $136.6 million compared to $1.6 million for the thirty-nine weeks ended September 25, 2019, an increase of $135.0 million. This increase was primarily due to $145.0 million in net cash proceeds from the issuance of Class A common stock, partially offset by increased payments made under the Tax Receivable Agreement and distributions to our non-controlling interest holders.

Revolving Credit Facility

In August 2019, we terminated our previous revolving credit facility and entered into a new Revolving Credit Facility agreement, which permits borrowings up to $50.0 million, of which the entire amount is available immediately, with the ability to increase available borrowings up to an additional $100.0 million, to be made available subject to satisfaction of certain conditions. The Revolving Credit Facility will mature and all amounts outstanding will be due and payable in August 2024. The Revolving Credit Facility also permits the issuance of letters of credit upon our request of up to $15.0 million. Borrowings under the Revolving Credit facility will bear interest at either: (i) LIBOR plus a percentage ranging from 1.0% to 1.5% or (ii) the base rate plus a percentage ranging from 0.0% to 0.5%, in each case depending on our net lease adjusted leverage ratio. To the extent the LIBOR reference rate is no longer available, the administrative agent, in consultation with us, will determine a replacement rate which will be generally in accordance with similar transactions in which it serves as administrative agent. 

The obligations under the Revolving Credit Facility are secured by a first-priority security interest in substantially all of the assets of SSE Holdings and the guarantors. The obligations under the Revolving Credit Facility are guaranteed by each of SSE Holdings' direct and indirect subsidiaries (with certain exceptions).

The Revolving Credit Facility requires us to comply with maximum net lease adjusted leverage and minimum fixed charge coverage ratios. We are not subject to these coverage ratios for a period of time due to the First Amendment to the Revolving Credit Facility described below. In addition, the Revolving Credit Facility contains other customary affirmative and negative covenants, including those which (subject to certain exceptions and dollar thresholds) limit our ability to incur debt; incur liens; make investments; engage in mergers, consolidations, liquidations or acquisitions; dispose of assets; make distributions on or repurchase equity securities; engage in transactions with affiliates; and prohibits us, with certain exceptions, from engaging in any line of business not related to our current line of business. As of September 23, 2020, we were in compliance with all covenants.

Shake Shack Inc. Form 10-Q | 45

In March 2020, we drew down the full $50.0 million available under the Revolving Credit Facility to enhance liquidity and financial flexibility given the uncertain market conditions created by the COVID-19 pandemic. We repaid the full amount we drew down plus interest in June 2020.

In May 2020, we entered into a First Amendment to the Revolving Credit Facility, which, among other things, provides for modified financial covenant compliance requirements for a period of time. The First Amendment requires us to maintain minimum liquidity of $25.0 million through July 1, 2021 and outstanding borrowings during the applicable period covered by the First Amendment bear interest at either: (i) LIBOR plus a percentage ranging from 1.0% to 2.5% or (ii) the base rate plus a percentage ranging from 0.0% to 1.50%, in each case depending on our net lease adjusted leverage ratio.

CONTRACTUAL OBLIGATIONS

There have been no material changes to the contractual obligations as disclosed in our Annual Report on Form 10-K for the fiscal year ended December 25, 2019, other than those made in the ordinary course of business.

OFF-BALANCE SHEET ARRANGEMENTS

There have been no material changes to our off-balance sheet arrangements as disclosed in our Annual Report on Form 10-K for the fiscal year ended December 25, 2019.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Our discussion and analysis of our consolidated financial condition and results of operations is based upon the accompanying condensed consolidated financial statements and notes thereto, which have been prepared in accordance with GAAP. The preparation of the condensed consolidated financial statements requires us to make estimates, judgments and assumptions, which we believe to be reasonable, based on the information available. These estimates and assumptions affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosures of contingent assets and liabilities. Variances in the estimates or assumptions used to actual experience could yield materially different accounting results. On an ongoing basis, we evaluate the continued appropriateness of our accounting policies and resulting estimates to make adjustments we consider appropriate under the facts and circumstances. There have been no significant changes to our critical accounting policies as disclosed in our Annual Report on Form 10-K for the fiscal year ended December 25, 2019.

Recently Issued Accounting Pronouncements

See "Note 2: Summary of Significant Accounting Policies—Recently Issued Accounting Pronouncements” under Part I, Item 1 of this Form 10-Q.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

There have been no material changes to our exposure to market risks as described in Part II, Item 7A of our Annual Report on Form 10-K for the fiscal year ended December 25, 2019.

Item 4. Controls and Procedures.

46 | Shake Shack Inc. Form 10-Q

DISCLOSURE CONTROLS AND PROCEDURES

Under the supervision and with the participation of our management, including the Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the effectiveness of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this report. Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of such date. Our disclosure controls and procedures are designed to ensure that information required to be disclosed in the reports we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms and that such information is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, to allow timely decisions regarding required disclosure.

CHANGES IN INTERNAL CONTROL OVER FINANCIAL REPORTING

There were no changes to our internal control over financial reporting that occurred during the quarter ended September 23, 2020 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Shake Shack Inc. Form 10-Q | 47

PART II – OTHER INFORMATION

Item 1. Legal Proceedings.

The information required by this Item is incorporated by reference to Part I, Item 1, Note 15: Commitments and Contingencies—Legal Contingencies.

Item 1A. Risk Factors.

There have been no material changes to the risk factors disclosed in the Company's Annual Report on Form 10-K for the fiscal year ended December 25, 2019, as supplemented by the risk factors disclosed in the Company's Quarterly Report on Form 10-Q for the quarter ended June 24, 2020.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

None.

Item 3. Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

None.

48 | Shake Shack Inc. Form 10-Q

Item 6. Exhibits.

Exhibit Number		Incorporated by Reference			Filed Herewith
	Exhibit Description	Form	Exhibit	Filing Date
3.1	Amended and Restated Certificate of Incorporation of Shake Shack Inc., effective February 4, 2015	8-K	3.1	2/10/2015
3.2	Second Amended and Restated Bylaws of Shack Shake Inc., dated October 1, 2019	8-K	3.1	10/4/2019
4.1	Form of Class A Common Stock Certificate	S-1/A	4.1	1/28/2015
31.1	Certification of the Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002				*
31.2	Certification of the Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002				*
32	Certification of Principal Executive Officer and Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002				#
101.INS	XBRL Instance Document - the instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document				*
101.SCH	XBRL Taxonomy Extension Schema Document				*
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document				*
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document				*
101.LAB	XBRL Taxonomy Extension Label Linkbase Document				*
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document				*
104	Cover Page Interactive Data File - the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document				*

#    Furnished herewith.

Shake Shack Inc. Form 10-Q | 49

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, thereunto duly authorized.

	Shake Shack Inc.
	(Registrant)
Date: October 30, 2020	By:	/s/ Randy Garutti
		Randy Garutti
		Chief Executive Officer (Principal Executive Officer and Duly Authorized Officer)
Date: October 30, 2020	By:	/s/ Tara Comonte
		Tara Comonte
		President and Chief Financial Officer (Principal Financial Officer and Duly Authorized Officer)

50 | Shake Shack Inc. Form 10-Q

EX-31.1

Exhibit 31.1

Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Randy Garutti, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q for the quarterly period ended September 23, 2020 of Shake Shack Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: October 30, 2020
	/s/ Randy Garutti
	Randy Garutti
	Chief Executive Officer

EX-31.2

Exhibit 31.2

Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Tara Comonte, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q for the quarterly period ended September 23, 2020 of Shake Shack Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: October 30, 2020
	/s/ Tara Comonte
	Tara Comonte
	President and Chief Financial Officer

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Shake Shack Inc. (the “Company”), for the quarterly period ended September 23, 2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: October 30, 2020
	/s/ Randy Garutti
	Randy Garutti
	Chief Executive Officer

Date: October 30, 2020
	/s/ Tara Comonte
	Tara Comonte
	President and Chief Financial Officer

XML

Document and Entity Information Document and Entity Information - shares	3 Months Ended	9 Months Ended
	Sep. 23, 2020	Sep. 23, 2020	Oct. 21, 2020
Document Information [Line Items]
Security Exchange Name	NYSE
Trading Symbol	SHAK
Title of 12(b) Security	Class A Common Stock, par value $0.001
Entity Interactive Data Current	Yes
Local Phone Number	747-7200
City Area Code	646
Entity Address, Postal Zip Code	10014
Entity Tax Identification Number	47-1941186
Entity Incorporation, State or Country Code	DE
Entity File Number	001-36823
Document Transition Report	false
Document Quarterly Report	true
Document type	10-Q
Amendment flag	false
Document Period End Date		Sep. 23, 2020
Document fiscal year focus	2020
Document fiscal period focus	Q3
Entity registrant name	SHAKE SHACK INC.
Entity Address, Address Line One	225 Varick Street
Entity Address, Address Line Two	Suite 301
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity central index key	0001620533
Current fiscal year end date	--12-30
Entity filer category	Large Accelerated Filer
Entity current reporting status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Class A Common Stock
Document Information [Line Items]
Entity common stock, shares outstanding (in shares)			38,329,552
Class B Common Stock
Document Information [Line Items]
Entity common stock, shares outstanding (in shares)			3,112,002

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019
Current assets:
Cash and cash equivalents	$ 174,883	$ 37,099
Marketable securities	16,879	36,508
Accounts receivable	7,729	9,970
Inventories	2,383	2,221
Prepaid expenses and other current assets	2,636	1,877
Total current assets	204,510	87,675
Property and equipment, net	326,526	314,862
Operating lease assets	305,133	274,426
Deferred income taxes, net	288,995	279,817
Other assets	12,038	11,488
TOTAL ASSETS	1,137,202	968,268
Current liabilities:
Accounts payable	22,354	14,300
Accrued expenses	25,236	24,140
Accrued wages and related liabilities	9,237	11,451
Operating lease liabilities, current	34,859	30,002
Other current liabilities	12,580	19,499
Total current liabilities	104,266	99,392
Long-term operating lease liabilities	336,149	304,914
Liabilities under tax receivable agreement, net of current portion	228,197	226,649
Other long-term liabilities	21,828	15,328
Total liabilities	690,440	646,283
Commitments and contingencies (Note 15)
Stockholders' equity:
Preferred stock, no par value—10,000,000 shares authorized; none issued and outstanding as of September 23, 2020 and December 25, 2019.	0	0
Additional paid-in capital	386,011	244,410
Retained earnings	31,637	54,367
Accumulated other comprehensive income	3	2
Total stockholders' equity attributable to Shake Shack Inc.	417,692	298,817
Non-controlling interests	29,070	23,168
Total equity	446,762	321,985
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,137,202	968,268
Class A Common Stock
Stockholders' equity:
Common stock	38	35
Class B Common Stock
Stockholders' equity:
Common stock	$ 3	$ 3

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares	Sep. 23, 2020	Dec. 25, 2019
Preferred Stock, no par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Class A Common Stock
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares, issued (in shares)	38,280,102	34,417,302
Common stock, shares, outstanding (in shares)	38,280,102	34,417,302
Class B Common Stock
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	35,000,000	35,000,000
Common stock, shares, issued (in shares)	3,112,002	3,145,197
Common stock, shares, outstanding (in shares)	3,112,002	3,145,197

XML

CONDENSED CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
TOTAL REVENUE	$ 130,401	$ 157,762	$ 365,357	$ 443,084
Shack-level operating expenses:
Food and paper costs	37,903	44,159	107,494	125,049
Labor and related expenses	37,898	41,601	110,597	118,891
Other operating expenses	18,743	18,947	50,826	51,270
Occupancy and related expenses	13,093	12,537	37,974	35,309
General and administrative expenses	14,962	17,090	45,170	46,420
Depreciation expense	12,376	10,474	36,233	29,239
Pre-opening costs	1,822	4,487	5,799	10,678
Impairment and loss on disposal of assets	402	303	2,924	1,031
TOTAL EXPENSES	137,199	149,598	397,017	417,887
OPERATING INCOME (LOSS)	(6,798)	8,164	(31,660)	25,197
Other income, net	34	248	335	1,259
Interest expense	(143)	(133)	(697)	(302)
INCOME (LOSS) BEFORE INCOME TAXES	(6,907)	8,279	(32,022)	26,154
Benefit from income taxes	(797)	(3,144)	(6,802)	(47)
NET INCOME (LOSS)	(6,110)	11,423	(25,220)	26,201
Less: net income (loss) attributable to non-controlling interests	(551)	1,079	(2,490)	4,281
NET INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC.	$ (5,559)	$ 10,344	$ (22,730)	$ 21,920
Earnings (loss) per share of Class A common stock:
Basic (in dollars per share)	$ (0.15)	$ 0.32	$ (0.62)	$ 0.72
Diluted (in dollars per share)	$ (0.15)	$ 0.31	$ (0.62)	$ 0.70
Weighted-average shares of Class A common stock outstanding:
Basic (in shares)	38,251	31,961	36,668	30,549
Diluted (in shares)	38,251	32,916	36,668	31,441
Shack sales
TOTAL REVENUE	$ 126,288	$ 152,366	$ 353,855	$ 428,811
Licensing revenue
TOTAL REVENUE	$ 4,113	$ 5,396	$ 11,502	$ 14,273

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (6,110)	$ 11,423	$ (25,220)	$ 26,201
Other comprehensive income, net of tax(1):
Change in foreign currency translation adjustment	0	0	1	0
Net change	0	0	1	0
OTHER COMPREHENSIVE INCOME	0	0	1	0
COMPREHENSIVE INCOME (LOSS)	(6,110)	11,423	(25,219)	26,201
Less: comprehensive income (loss) attributable to non-controlling interest	(551)	1,079	(2,490)	4,281
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC.	$ (5,559)	$ 10,344	$ (22,729)	$ 21,920

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 25, 2019
Statement of Comprehensive Income [Abstract]
Income tax benefit	$ 0	$ 0	$ 0

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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Class A Common Stock	Class B Common Stock	Common Stock [Member] Class A Common Stock	Common Stock [Member] Class B Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Non- Controlling Interest
Beginning balance (shares) at Dec. 26, 2018				29,520,833	7,557,347
Beginning balance at Dec. 26, 2018	$ 273,455			$ 30	$ 8	$ 195,633	$ 30,404	$ 0	$ 47,380
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	26,201						21,920		4,281
Other comprehensive income:
Net change in foreign currency translation adjustment	0
Equity-based compensation	5,918					5,918
Activity under stock compensation plans (in shares)				383,117
Activity under stock compensation plans	5,716					2,718			2,998
Redemption of LLC Interests (in shares)				1,057,737	(1,057,737)
Redemption of LLC Interests	0			$ 1	$ (1)	7,115			(7,115)
Effect of Gramercy Tavern Merger (in shares)				2,690,263	(2,690,263)
Effect of Gramercy Tavern Merger				$ 3	$ (3)	19,218			(19,218)
Establishment of liabilities under tax receivable agreement and related changes to deferred tax assets associated with increases in tax basis	3,516					3,516
Distributions paid to non-controlling interest holders	(1,706)								(1,706)
Ending balance (shares) at Sep. 25, 2019				33,651,950	3,809,347
Ending balance at Sep. 25, 2019	318,295			$ 34	$ 4	234,118	56,460	0	27,679
Beginning balance (shares) at Jun. 26, 2019				30,557,685	6,731,209
Beginning balance at Jun. 26, 2019	300,673			$ 31	$ 7	208,866	46,116	0	45,653
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	11,423						10,344		1,079
Other comprehensive income:
Net change in foreign currency translation adjustment	0
Equity-based compensation	1,908					1,908
Activity under stock compensation plans (in shares)				172,403
Activity under stock compensation plans	3,625					1,786			1,839
Redemption of LLC Interests (in shares)				231,599	(231,599)
Redemption of LLC Interests	0					1,635			(1,635)
Effect of Gramercy Tavern Merger (in shares)				2,690,263	(2,690,263)
Effect of Gramercy Tavern Merger				$ 3	$ (3)	19,218			(19,218)
Establishment of liabilities under tax receivable agreement and related changes to deferred tax assets associated with increases in tax basis	705					705
Distributions paid to non-controlling interest holders	(39)								(39)
Ending balance (shares) at Sep. 25, 2019				33,651,950	3,809,347
Ending balance at Sep. 25, 2019	318,295			$ 34	$ 4	234,118	56,460	0	27,679
Beginning balance (shares) at Dec. 25, 2019		34,417,302	3,145,197	34,417,302	3,145,197
Beginning balance at Dec. 25, 2019	321,985			$ 35	$ 3	244,410	54,367	2	23,168
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(25,220)						(22,730)		(2,490)
Other comprehensive income:
Net change in foreign currency translation adjustment	1							1
Equity-based compensation	4,088					4,088
Activity under stock compensation plans (in shares)				180,068
Activity under stock compensation plans	460					627			(167)
Redemption of LLC Interests (in shares)				33,195	(33,195)
Redemption of LLC Interests	0					239			(239)
Establishment of liabilities under tax receivable agreement and related changes to deferred tax assets associated with increases in tax basis	929					929
Issuance of Class A common stock sold in equity offerings, net of underwriting discounts, commissions and offering costs (in shares)				3,649,537
Issuance of Class A common stock sold in equity offerings, net of underwriting discounts, commissions and offering costs	144,997			$ 3		135,718			9,276
Distributions paid to non-controlling interest holders	(478)								(478)
Ending balance (shares) at Sep. 23, 2020		38,280,102	3,112,002	38,280,102	3,112,002
Ending balance at Sep. 23, 2020	446,762			$ 38	$ 3	386,011	31,637	3	29,070
Beginning balance (shares) at Jun. 24, 2020				38,236,538	3,117,002
Beginning balance at Jun. 24, 2020	451,285			$ 38	$ 3	384,338	37,196	3	29,707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(6,110)						(5,559)		(551)
Other comprehensive income:
Net change in foreign currency translation adjustment	0
Equity-based compensation	1,346					1,346
Activity under stock compensation plans (in shares)				38,564
Activity under stock compensation plans	489					367			122
Redemption of LLC Interests (in shares)				5,000	(5,000)
Redemption of LLC Interests	0					44			(44)
Establishment of liabilities under tax receivable agreement and related changes to deferred tax assets associated with increases in tax basis	(84)					(84)
Distributions paid to non-controlling interest holders	(164)								(164)
Ending balance (shares) at Sep. 23, 2020		38,280,102	3,112,002	38,280,102	3,112,002
Ending balance at Sep. 23, 2020	$ 446,762			$ 38	$ 3	$ 386,011	$ 31,637	$ 3	$ 29,070

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019
OPERATING ACTIVITIES
Net income (loss) (including amounts attributable to non-controlling interests)	$ (25,220)	$ 26,201
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation expense	36,233	29,239
Capitalized Computer Software, Amortization	1,086	107
Non-cash operating lease cost	33,726	29,329
Equity-based compensation	4,058	5,751
Deferred income taxes	8,680	(1,152)
Non-cash interest expense	48	85
Gain on sale of marketable securities	(79)	(22)
Impairment and loss on disposal of assets	2,924	1,031
Unrealized (gain) loss on available-for-sale securities	22	(231)
Other non-cash expense	906	2
Changes in operating assets and liabilities:
Accounts receivable	2,241	8,320
Inventories	(162)	(33)
Prepaid expenses and other current assets	(759)	265
Other assets	(2,111)	(6,735)
Accounts payable	4,349	4,038
Accrued expenses	(13,361)	2,841
Accrued wages and related liabilities	(2,214)	(915)
Other current liabilities	437	638
Long-term operating lease liabilities	(25,298)	(26,932)
Other long-term liabilities	2,992	1,216
NET CASH PROVIDED BY OPERATING ACTIVITIES	28,498	73,043
INVESTING ACTIVITIES
Purchases of property and equipment	(47,002)	(80,904)
Purchases of marketable securities	(314)	(970)
Sales of marketable securities	20,000	27,000
NET CASH USED IN INVESTING ACTIVITIES	(27,316)	(54,874)
FINANCING ACTIVITIES
Proceeds from revolving credit facility	50,000	0
Payments on revolving credit facility	(50,000)	0
Deferred financing costs	(64)	(286)
Proceeds from issuance of Class A common stock sold in equity offerings, net of underwriting discounts, commissions and offering costs	144,997	0
Payments on principal of finance leases	(1,670)	(1,433)
Distributions paid to non-controlling interest holders	(478)	(1,706)
Payments under tax receivable agreement	(6,643)	(707)
Proceeds from stock option exercises	2,239	7,089
Payment, Tax Withholding, Share-based Payment Arrangement	(1,779)	(1,371)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	136,602	1,586
NET INCREASE IN CASH AND CASH EQUIVALENTS	137,784	19,755
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	37,099	24,750
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 174,883	$ 44,505

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SUPPLEMENTAL CASH FLOW INFORMATION

9 Months Ended

Sep. 23, 2020

Supplemental Cash Flow Elements [Abstract]

SUPPLEMENTAL CASH FLOW INFORMATION

SUPPLEMENTAL CASH FLOW INFORMATION

The following table sets forth supplemental cash flow information for the thirty-nine weeks ended September 23, 2020 and September 25, 2019:

		Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019
Cash paid for:
	Income taxes, net of refunds	$	1,270	$	2,483
	Interest, net of amounts capitalized	584		157
Non-cash investing activities:
	Accrued purchases of property and equipment	9,544		17,394
	Capitalized equity-based compensation	29		79
Non-cash financing activities:
	Class A common stock issued in connection with the redemption of LLC Interests	—		1
	Class A common stock issued in connection with the GTC merger	—		3
	Cancellation of Class B common stock in connection with the redemption of LLC Interests	—		(1)
	Cancellation of Class B common stock in connection with the GTC Merger	—		(3)
	Establishment of liabilities under tax receivable agreement	414		20,027

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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

9 Months Ended

Sep. 23, 2020

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow Information

The following table sets forth supplemental cash flow information for the thirty-nine weeks ended September 23, 2020 and September 25, 2019:

		Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019
Cash paid for:
	Income taxes, net of refunds	$	1,270	$	2,483
	Interest, net of amounts capitalized	584		157
Non-cash investing activities:
	Accrued purchases of property and equipment	9,544		17,394
	Capitalized equity-based compensation	29		79
Non-cash financing activities:
	Class A common stock issued in connection with the redemption of LLC Interests	—		1
	Class A common stock issued in connection with the GTC merger	—		3
	Cancellation of Class B common stock in connection with the redemption of LLC Interests	—		(1)
	Cancellation of Class B common stock in connection with the GTC Merger	—		(3)
	Establishment of liabilities under tax receivable agreement	414		20,027

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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019
Cash paid for:
Income taxes, net of refunds	$ 1,270	$ 2,483
Interest, net of amounts capitalized	584	157
Non-cash investing activities:
Accrued purchases of property and equipment	9,544	17,394
Capitalized equity-based compensation	29	79
Non-cash financing activities:
Establishment of liabilities under tax receivable agreement	414	20,027
Redemption or Exchange of Units | Class A Common Stock
Non-cash financing activities:
Class A common stock issued in connection with the redemption of LLC Interests	0	1
Redemption or Exchange of Units | Class B Common Stock
Non-cash financing activities:
Cancellation of Class B common stock in connection with the redemption of LLC Interests	$ 0	$ (1)

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NATURE OF OPERATIONS	9 Months Ended
	Sep. 23, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
NATURE OF OPERATIONS	NATURE OF OPERATIONSShake Shack Inc. ("we," "us," "our," "Shake Shack" and the "Company") was formed on September 23, 2014 as a Delaware corporation for the purpose of facilitating an initial public offering and other related transactions in order to carry on the business of SSE Holdings, LLC and its subsidiaries ("SSE Holdings"). We are the sole managing member of SSE Holdings and, as sole managing member, we operate and control all of the business and affairs of SSE Holdings. As a result, we consolidate the financial results of SSE Holdings and report a non-controlling interest representing the economic interest in SSE Holdings held by the other members of SSE Holdings. As of September 23, 2020 we owned 92.5% of SSE Holdings. Unless the context otherwise requires, "we," "us," "our," "Shake Shack," the "Company" and other similar references, refer to Shake Shack Inc. and, unless otherwise stated, all of its subsidiaries, including SSE Holdings.We operate and license Shake Shack restaurants ("Shacks"), which serve hamburgers, hot dogs, chicken, crinkle-cut fries, shakes, frozen custard, beer, wine and more. As of September 23, 2020, there were 298 Shacks in operation, system-wide, of which 175 were domestic Company-operated Shacks, 22 were domestic licensed Shacks and 101 were international licensed Shacks. As of September 23, 2020, 8 domestic Company-operated Shacks and 18 licensed Shacks were temporarily closed primarily due to COVID-19.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

9 Months Ended

Sep. 23, 2020

Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the accounts of Shake Shack Inc. and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. These interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and on a basis consistent in all material respects with the accounting policies described in our Annual Report on Form 10-K for the fiscal year ended December 25, 2019 ("2019 Form 10-K"). Certain information and footnote disclosures normally presented in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes thereto included in our 2019 Form 10-K. In our opinion, all adjustments, which are normal and recurring in nature, necessary for a fair presentation of our financial position and results of operation have been included. Operating results for interim periods are not necessarily indicative of the results that may be expected for a full fiscal year.

SSE Holdings is considered a variable interest entity. Shake Shack Inc. is the primary beneficiary as we have the majority economic interest in SSE Holdings and, as the sole managing member, have decision making authority that significantly affects the economic performance of the entity, while the limited partners have no substantive kick-out or participating rights. As a result, we consolidate SSE Holdings. The assets and liabilities of SSE Holdings represent substantially all of our consolidated assets and liabilities with the exception of certain deferred taxes and liabilities under the Tax Receivable Agreement. As of September 23, 2020 and December 25, 2019, the net assets of SSE Holdings were $388,789 and $270,542, respectively. The assets of SSE Holdings are subject to certain restrictions in SSE Holdings' revolving credit agreement. See Note 8, Debt, for more information.

Fiscal Year

We operate on a 52/53 week fiscal year ending on the last Wednesday in December. Fiscal 2020 contains 53 weeks and ends on December 30, 2020. Fiscal 2019 contained 52 weeks and ended on December 25, 2019. Unless otherwise stated, references to years in this report relate to fiscal years.

Use of Estimates

The preparation of these condensed consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the

date of the financial statements, and the reported amounts of sales and expenses during the reporting period. Actual results could differ from those estimates.

Recently Adopted Accounting Pronouncements   

We adopted the Accounting Standards Updates (“ASUs”) summarized below in fiscal 2020.

Accounting Standards Update (“ASU”)	Description	Date Adopted
Measurement of Credit Losses on Financial Instruments (ASU 2016-13)	This standard replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The adoption of this standard did not have a material impact to our consolidated financial statements.	December 26, 2019
Facilitation of the Effects of Reference Rate Reform on Financial Reporting (ASU 2020-04)	This standard provides optional guidance for a limited time to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. The adoption of this standard did not have a material impact to our consolidated financial statements.	Effective upon issuance (March 12, 2020)

Recently Issued Accounting Pronouncements   

Accounting Standards Update (“ASU”)	Description	Expected Impact	Effective Date
Simplifying the Accounting for Income Taxes (ASU 2019-12)	This standard simplifies various aspects related to accounting for income taxes by removing certain exceptions to the general principles in ASC 740, “Income Taxes” (“ASC 740”), and clarifying certain aspects of the current guidance to promote consistency among reporting entities.	The adoption of this standard is not expected to have a material impact on our consolidated financial statements.	December 31, 2020 Early adoption is permitted.

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REVENUE

9 Months Ended

Sep. 23, 2020

Revenue from Contract with Customer [Abstract]

REVENUE

REVENUE

Revenue Recognition

Revenue consists of Shack sales and licensing revenue. Generally, revenue is recognized as promised goods or services transfer to the guest or customer in an amount that reflects the consideration we expect to be entitled in exchange for those goods or services.

Revenue from Shack sales is presented net of discounts and recognized when food, beverage and retail products are sold. Sales tax collected from customers is excluded from Shack sales and the obligation is included in sales tax payable until the taxes are remitted to the appropriate taxing authorities. Revenue from our gift cards is deferred and recognized upon redemption.

Licensing revenues include initial territory fees, Shack opening fees, and ongoing sales-based royalty fees from licensed Shacks. Generally, the licenses granted to develop, open and operate each Shack in a specified territory are the predominant goods or services transferred to the licensee in our contracts, and represent distinct performance obligations. Ancillary promised services, such as training and assistance during the initial opening of a Shack, are typically combined with the licenses and considered as one performance obligation per Shack. We determine the transaction price for each contract, which is comprised of the initial territory fee, and an estimate of the total Shack opening fees we expect to be entitled to. The calculation of total Shack opening fees included in the transaction price requires judgment, as it is based on an estimate of the number of Shacks we expect the licensee to open. The transaction price is then allocated equally to each Shack expected to open. The performance obligations are satisfied over time, starting when a Shack opens, through the end of the term of the license granted to the Shack. Because we are transferring licenses to access our intellectual property during a contractual term, revenue is recognized on a straight-line

basis over the license term. Generally, payment for the initial territory fee is received upon execution of the licensing agreement, and payment for the restaurant opening fees are received either in advance of or upon opening the related restaurant. These payments are initially deferred and recognized as revenue as the performance obligations are satisfied, which occurs over a long-term period.

Revenue from sales-based royalties is recognized as the related sales occur.

Revenue recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019, disaggregated by type is as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Shack sales	$	126,288	$	152,366	$	353,855	$	428,811
Licensing revenue:
Sales-based royalties	3,867		5,293		10,943		13,938
Initial territory and opening fees	246		103		559		335
Total revenue	$	130,401	$	157,762	$	365,357	$	443,084

The aggregate amount of the transaction price allocated to performance obligations that are unsatisfied (or partially unsatisfied) as of September 23, 2020 was $17,048. We expect to recognize this amount as revenue over a long-term period, as the license term for each Shack ranges from 5 to 20 years. This amount excludes any variable consideration related to sales-based royalties.

Contract Balances

Opening and closing balances of contract liabilities and receivables from contracts with customers is as follows:

	September 23 2020		December 26 2019
Shack sales receivables	$	4,257	$	4,265
Licensing receivables	2,755		4,510
Gift card liability	2,205		2,258
Deferred revenue, current	564		511
Deferred revenue, long-term	12,144		11,310

Revenue recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 that was included in their respective liability balances at the beginning of the period is as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Gift card liability	$	91	$	84	$	436	$	467
Deferred revenue	234		86		539		305

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FAIR VALUE MEASUREMENTS

9 Months Ended

Sep. 23, 2020

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables present information about our financial assets and liabilities measured at fair value on a recurring basis as of September 23, 2020 and December 25, 2019, and indicate the classification within the fair value hierarchy.

Cash, Cash Equivalents and Marketable Securities

The following tables summarize our cash, cash equivalents and marketable securities by significant investment categories as of September 23, 2020 and December 25, 2019:

		September 23, 2020
		Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cash and Cash Equivalents		Marketable Securities
Cash		$	174,883	$	—	$	—	$	174,883	$	174,883	$	—
Level 1:
	Money market funds	—		—		—		—		—		—
	Mutual funds	16,829		50		—		16,879		—		16,879
Total		$	191,712	$	50	$	—	$	191,762	$	174,883	$	16,879

		December 25, 2019
		Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cash and Cash Equivalents		Marketable Securities
Cash		$	32,094	$	—	$	—	$	32,094	$	32,094	$	—
Level 1:
	Money market funds	5,005		—		—		5,005		5,005		—
	Mutual funds	36,436		72		—		36,508		—		36,508
Total		$	73,535	$	72	$	—	$	73,607	$	37,099	$	36,508

A summary of other income (loss) from equity securities recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Equity securities:
	Dividend income	$	40	$	254	$	290	$	997
	Realized gain (loss) on sale of investments	—		—		79		22
	Unrealized gain (loss) on equity securities	—		—		(22)		231
Total		$	40	$	254	$	347	$	1,250

A summary of equity securities sold and gross realized gains and losses recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Equity securities:
	Gross proceeds from sales and redemptions	$	—	$	—	$	20,000	$	27,000
	Cost basis of sales and redemptions	—		—		19,921		26,978
	Gross realized gains included in net income (loss)	—		—		79		36
	Gross realized losses included in net income (loss)	—		—		—		(14)

Realized gains and losses are determined on a specific identification method and are included in other income, net on the Condensed Consolidated Statements of Income (Loss). As of September 23, 2020 and December 25, 2019, there was no decline in the market value of our marketable securities investment portfolio.

Other Financial Instruments

The carrying value of our other financial instruments, including accounts receivable, accounts payable, and accrued expenses as of September 23, 2020 and December 25, 2019 approximated their fair value due to the short-term nature of these financial instruments.

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

Assets and liabilities that are measured at fair value on a non-recurring basis include our long-lived assets, operating lease right-of-use assets and indefinite-lived intangible assets. During the thirty-nine weeks ended September 23, 2020, we recognized an impairment charge of $1,132 at one location. Of the total impairment charge, $736 was attributed to property and equipment held and used, $383 was attributed to operating lease right-of-use assets, and $13 was attributed to finance lease right-of-use assets. The asset impairment charge is included in Impairment and loss on disposal of assets on the Condensed Consolidated Statement of Income (Loss). The fair values of assets were determined using an income-based approach and are classified as Level 3 within the fair value hierarchy. Significant inputs include projections of future cash flows, discount rates, Shack sales and profitability. There were no impairment charges recognized during the thirteen weeks ended September 23, 2020, and the thirteen and thirty-nine weeks ended September 25, 2019.

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INVENTORIES

9 Months Ended

Sep. 23, 2020

Inventory Disclosure [Abstract]

INVENTORIES

INVENTORIES

Inventories are stated at the lower of cost or net realizable value with cost determined on a first-in, first-out basis. We make adjustments to our inventory reserves for inventories that are deemed to be obsolete or slow moving. As of September 23, 2020 and December 25, 2019, no adjustment was deemed necessary to reduce inventory to net realizable value. Inventories as of September 23, 2020 and December 25, 2019 consisted of the following:

	September 23 2020		December 25 2019
Food	$	1,477	$	1,738
Wine	81		107
Beer	113		114
Beverages	209		233
Retail merchandise	76		29
Paper goods	427		—
Inventories	$	2,383	$	2,221

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PROPERTY AND EQUIPMENT

9 Months Ended

Sep. 23, 2020

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT

PROPERTY AND EQUIPMENT

Property and equipment as of September 23, 2020 and December 25, 2019 consisted of the following:

	September 23 2020		December 25 2019
Leasehold improvements	$	328,686	$	302,204
Equipment	58,951		54,404
Furniture and fixtures	19,400		18,082
Computer equipment and software	27,160		24,226
Financing equipment lease assets	8,774		7,442
Construction in progress	37,560		30,290
Property and equipment, gross	480,531		436,648
Less: accumulated depreciation	154,005		121,786
Property and equipment, net	$	326,526	$	314,862

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SUPPLEMENTAL BALANCE SHEET INFORMATION

9 Months Ended

Sep. 23, 2020

Supplemental Balance Sheet Disclosures [Abstract]

SUPPLEMENTAL BALANCE SHEET INFORMATION

SUPPLEMENTAL BALANCE SHEET INFORMATION

The components of other current liabilities as of September 23, 2020 and December 25, 2019 are as follows:

	September 23 2020		December 25 2019
Sales tax payable	$	3,202	$	4,086
Current portion of liabilities under tax receivable agreement	—		7,777
Gift card liability	2,205		2,258
Current portion of financing equipment lease liabilities	1,740		1,873
Other	5,433		3,505
Other current liabilities	$	12,580	$	19,499

The components of other long-term liabilities as of September 23, 2020 and December 25, 2019 are as follows:

	September 23 2020		December 25 2019
Deferred licensing revenue	$	12,144	$	11,310
Long-term portion of financing equipment lease liabilities	3,492		3,643
Other(1)	6,192		375
Other long-term liabilities	$	21,828	$	15,328

(1)    As of September 23, 2020, Other included $3,388 of deferred lease incentive liabilities related to leases with variable lease cost as well as $2,461 of deferred social security taxes associated with the CARES Act. For further information relating to the CARES Act, see Note 12, Income Taxes.

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DEBT

9 Months Ended

Sep. 23, 2020

Debt Disclosure [Abstract]

DEBT

DEBT

Revolving Credit Facility

In August 2019, we terminated our previous revolving credit facility and entered into a new revolving credit facility agreement ("Revolving Credit Facility"), which permits borrowings up to $50,000, of which the entire amount is available immediately, with the ability to increase available borrowings up to an additional $100,000, to be made available subject to satisfaction of certain conditions. The Revolving Credit Facility will mature and all amounts outstanding will be due and payable in August 2024. The Revolving Credit Facility also permits the issuance of letters of credit upon our request of up to $15,000. Borrowings under the Revolving Credit Facility will bear interest at either: (i) LIBOR plus a percentage ranging from 1.0% to 1.5% or (ii) the base rate plus a percentage ranging from 0.0% to 0.5%, in each case depending on our net lease adjusted leverage ratio. To the extent the LIBOR reference rate is no longer available, the administrative agent, in consultation with us, will determine a replacement rate which will be generally in accordance with similar transactions in which it serves as administrative agent. 

The obligations under the Revolving Credit Facility are secured by a first-priority security interest in substantially all of the assets of SSE Holdings and the guarantors. The obligations under the Revolving Credit Facility are guaranteed by each of SSE Holdings' direct and indirect subsidiaries (with certain exceptions).

The Revolving Credit Facility requires us to comply with maximum net lease adjusted leverage and minimum fixed charge coverage ratios. We are not subject to these coverage ratios for a period of time due to the First Amendment to the Revolving Credit Facility described below. In addition, the Revolving Credit Facility contains other customary affirmative and negative covenants, including those which (subject to certain exceptions and dollar thresholds) limit our ability to incur debt; incur liens; make investments; engage in mergers, consolidations, liquidations or acquisitions; dispose of assets; make distributions on or repurchase equity securities; engage in transactions with affiliates; and prohibits us, with certain exceptions, from engaging in any line of business not related to our current line of business. As of September 23, 2020, we were in compliance with all covenants.

In May 2020, we entered into a first amendment to the Revolving Credit Facility ("First Amendment"), which, among other things, provides for modified financial covenant compliance requirements for a period of time. The First Amendment requires us to maintain minimum liquidity of $25,000 through July 1, 2021 and outstanding borrowings during the applicable period covered by the First Amendment bear interest at either: (i) LIBOR plus a percentage ranging from 1.0% to 2.5% or (ii) the base rate plus a percentage ranging from 0.0% to 1.50%, in each case depending on our net lease adjusted leverage ratio.

In March 2020, we drew down the full $50,000 available under the Revolving Credit Facility to enhance liquidity and financial flexibility given the uncertain market conditions created by the COVID-19 pandemic. We repaid this amount in full, plus interest, in June 2020.

Total interest costs incurred were $143 and $697 for the thirteen and thirty-nine weeks ended September 23, 2020, respectively, and $133 and $302 for the thirteen and thirty-nine weeks ended September 25, 2019, respectively.

Paycheck Protection Program

In April 2020, we entered into a $10,000 note payable with J.P. Morgan pursuant to the Paycheck Protection Program (“PPP Loan”) under the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act") and returned the entire outstanding balance plus interest in April 2020.

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LEASES

9 Months Ended

Sep. 23, 2020

Leases [Abstract]

LEASES

LEASES

Nature of Leases

We lease all of our domestic Company-operated Shacks, our home office and certain equipment under various non-cancelable lease agreements that expire on various dates through 2036. We evaluate contracts entered into to determine whether the contract involves the use of property or equipment, which is either explicitly or implicitly identified in the contract. We evaluate whether we control the use of the asset, which is determined by assessing whether we obtain substantially all economic benefits from the use of the asset, and whether we have the right to direct the use of the asset. If these criteria are met and we have identified a lease, we account for the contract under the requirements of Accounting Standards Codification Topic 842 ("ASC 842").

Upon the possession of a leased asset, we determine its classification as an operating or finance lease. Our real estate leases are classified as operating leases and most of our equipment leases are classified as finance leases. Generally, our real estate leases have initial terms ranging from 10 to 15 years and typically include two five-year renewal options. Renewal options are generally not recognized as part of the right-of-use assets and lease liabilities as it is not reasonably certain at commencement date that we would exercise the options to extend the lease. Our real estate leases typically provide for fixed minimum rent payments and/or contingent rent payments based upon sales in excess of specified thresholds. When the achievement of such sales thresholds is deemed to be probable, contingent rent is accrued in proportion to the sales recognized during the period. For operating leases that include rent holidays and rent escalation clauses, we recognize lease expense on a straight-line basis over the lease term from the date we take possession of the leased property. Lease expense incurred before a Shack opens is recorded in Pre-opening costs on the Condensed Consolidated Statements of Income (Loss). Once a domestic Company-operated Shack opens, we record the straight-line lease expense and any contingent rent, if applicable, in occupancy and related expenses on the Condensed Consolidated Statements of Income (Loss). Many of our leases also require us to pay real estate taxes, common area maintenance costs and other occupancy costs which are included in Occupancy and related expenses on the Condensed Consolidated Statements of Income (Loss).

As there were no explicit rates provided in our leases, we used our incremental borrowing rate in determining the present value of future lease payments. The discount rate used to measure the lease liability at the transition date was derived from the average of the yield curves obtained from using the notching method and the recovery rate method. The most significant assumption in calculating the incremental borrowing rate is our credit rating and is subject to judgment. We determined our credit rating based on a comparison of the financial information of SSE Holdings to other public companies and then used their respective credit ratings to develop our own.

We expend cash for leasehold improvements to build out and equip our leased premises. Generally, a portion of the leasehold improvements and building costs are reimbursed by our landlords as landlord incentives pursuant to agreed-upon terms in our lease agreements. If obtained, landlord incentives usually take the form of cash, full or partial credits against our future minimum

or contingent rents otherwise payable by us, or a combination thereof. In most cases, landlord incentives are received after we take possession of the property, as we meet required milestones during the construction of the property. We include these amounts in the measurement of the initial operating lease liability, which are also reflected as a reduction to the initial measurement of the right-of-use asset.

A summary of finance and operating lease right-of-use assets and liabilities as of September 23, 2020 and December 25, 2019 is as follows:

	Classification	September 23 2020		December 25 2019
Finance leases	Property and equipment, net	$	5,109	$	5,444
Operating leases	Operating lease assets	305,133		274,426
Total right-of-use assets		$	310,242	$	279,870
Finance leases:
	Other current liabilities	$	1,740	$	1,873
	Other long-term liabilities	3,493		3,643
Operating leases:
	Operating lease liabilities, current	34,859		30,002
	Long-term operating lease liabilities	336,149		304,914
Total lease liabilities		$	376,241	$	340,432

The components of lease expense for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 was as follows:

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Finance lease cost:
	Amortization of right-of-use assets	Depreciation expense	$	531	$	538	$	1,710	$	1,491
	Interest on lease liabilities	Interest expense	51		52		161		148
Operating lease cost		Occupancy and related expenses General and administrative expenses Pre-opening costs	11,506		10,564		33,726		29,329
Short-term lease cost		Occupancy and related expenses	138		279		331		313
Variable lease cost		Other operating expenses Occupancy and related expenses General and administrative expenses Pre-opening costs	3,267		4,338		9,413		11,636
Total lease cost			$	15,493	$	15,771	$	45,341	$	42,917

As of September 23, 2020, future minimum lease payments for finance and operating leases consisted of the following:

	Finance Leases		Operating Leases
2020	$	527	$	16,785
2021	1,890		46,943
2022	1,400		53,151
2023	896		53,705
2024	541		52,785
Thereafter	406		268,128
Total minimum payments	5,660		491,497
Less: imputed interest	427		120,489
Total lease liabilities	$	5,233	$	371,008

As of September 23, 2020 we had additional operating lease commitments of $45,605 for non-cancelable leases without a possession date, which will begin to commence in 2020. These lease commitments are consistent with the leases that we have executed thus far.

A summary of lease terms and discount rates for finance and operating leases as of September 23, 2020 and December 25, 2019 is as follows:

		September 23 2020		December 25 2019
Weighted-average remaining lease term (years):
	Finance leases	5.3		5.1
	Operating leases	9.8		10.1
Weighted-average discount rate:
	Finance leases	3.6	%	3.7	%
	Operating leases	3.8	%	5.4	%

Supplemental cash flow information related to leases for the thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirty-Nine Weeks Ended
		September 23 2020	September 25 2019
Cash paid for amounts included in the measurement of lease liabilities:
	Operating cash flows from finance leases	161	$	148
	Operating cash flows from operating leases	29,449	27,238
	Financing cash flows from finance leases	1,670	1,433
Right-of-use assets obtained in exchange for lease obligations:
	Finance leases	1,411	1,927
	Operating leases	42,502	65,773

LEASES

LEASES

Nature of Leases

We lease all of our domestic Company-operated Shacks, our home office and certain equipment under various non-cancelable lease agreements that expire on various dates through 2036. We evaluate contracts entered into to determine whether the contract involves the use of property or equipment, which is either explicitly or implicitly identified in the contract. We evaluate whether we control the use of the asset, which is determined by assessing whether we obtain substantially all economic benefits from the use of the asset, and whether we have the right to direct the use of the asset. If these criteria are met and we have identified a lease, we account for the contract under the requirements of Accounting Standards Codification Topic 842 ("ASC 842").

Upon the possession of a leased asset, we determine its classification as an operating or finance lease. Our real estate leases are classified as operating leases and most of our equipment leases are classified as finance leases. Generally, our real estate leases have initial terms ranging from 10 to 15 years and typically include two five-year renewal options. Renewal options are generally not recognized as part of the right-of-use assets and lease liabilities as it is not reasonably certain at commencement date that we would exercise the options to extend the lease. Our real estate leases typically provide for fixed minimum rent payments and/or contingent rent payments based upon sales in excess of specified thresholds. When the achievement of such sales thresholds is deemed to be probable, contingent rent is accrued in proportion to the sales recognized during the period. For operating leases that include rent holidays and rent escalation clauses, we recognize lease expense on a straight-line basis over the lease term from the date we take possession of the leased property. Lease expense incurred before a Shack opens is recorded in Pre-opening costs on the Condensed Consolidated Statements of Income (Loss). Once a domestic Company-operated Shack opens, we record the straight-line lease expense and any contingent rent, if applicable, in occupancy and related expenses on the Condensed Consolidated Statements of Income (Loss). Many of our leases also require us to pay real estate taxes, common area maintenance costs and other occupancy costs which are included in Occupancy and related expenses on the Condensed Consolidated Statements of Income (Loss).

As there were no explicit rates provided in our leases, we used our incremental borrowing rate in determining the present value of future lease payments. The discount rate used to measure the lease liability at the transition date was derived from the average of the yield curves obtained from using the notching method and the recovery rate method. The most significant assumption in calculating the incremental borrowing rate is our credit rating and is subject to judgment. We determined our credit rating based on a comparison of the financial information of SSE Holdings to other public companies and then used their respective credit ratings to develop our own.

We expend cash for leasehold improvements to build out and equip our leased premises. Generally, a portion of the leasehold improvements and building costs are reimbursed by our landlords as landlord incentives pursuant to agreed-upon terms in our lease agreements. If obtained, landlord incentives usually take the form of cash, full or partial credits against our future minimum

or contingent rents otherwise payable by us, or a combination thereof. In most cases, landlord incentives are received after we take possession of the property, as we meet required milestones during the construction of the property. We include these amounts in the measurement of the initial operating lease liability, which are also reflected as a reduction to the initial measurement of the right-of-use asset.

A summary of finance and operating lease right-of-use assets and liabilities as of September 23, 2020 and December 25, 2019 is as follows:

	Classification	September 23 2020		December 25 2019
Finance leases	Property and equipment, net	$	5,109	$	5,444
Operating leases	Operating lease assets	305,133		274,426
Total right-of-use assets		$	310,242	$	279,870
Finance leases:
	Other current liabilities	$	1,740	$	1,873
	Other long-term liabilities	3,493		3,643
Operating leases:
	Operating lease liabilities, current	34,859		30,002
	Long-term operating lease liabilities	336,149		304,914
Total lease liabilities		$	376,241	$	340,432

The components of lease expense for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 was as follows:

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Finance lease cost:
	Amortization of right-of-use assets	Depreciation expense	$	531	$	538	$	1,710	$	1,491
	Interest on lease liabilities	Interest expense	51		52		161		148
Operating lease cost		Occupancy and related expenses General and administrative expenses Pre-opening costs	11,506		10,564		33,726		29,329
Short-term lease cost		Occupancy and related expenses	138		279		331		313
Variable lease cost		Other operating expenses Occupancy and related expenses General and administrative expenses Pre-opening costs	3,267		4,338		9,413		11,636
Total lease cost			$	15,493	$	15,771	$	45,341	$	42,917

As of September 23, 2020, future minimum lease payments for finance and operating leases consisted of the following:

	Finance Leases		Operating Leases
2020	$	527	$	16,785
2021	1,890		46,943
2022	1,400		53,151
2023	896		53,705
2024	541		52,785
Thereafter	406		268,128
Total minimum payments	5,660		491,497
Less: imputed interest	427		120,489
Total lease liabilities	$	5,233	$	371,008

As of September 23, 2020 we had additional operating lease commitments of $45,605 for non-cancelable leases without a possession date, which will begin to commence in 2020. These lease commitments are consistent with the leases that we have executed thus far.

A summary of lease terms and discount rates for finance and operating leases as of September 23, 2020 and December 25, 2019 is as follows:

		September 23 2020		December 25 2019
Weighted-average remaining lease term (years):
	Finance leases	5.3		5.1
	Operating leases	9.8		10.1
Weighted-average discount rate:
	Finance leases	3.6	%	3.7	%
	Operating leases	3.8	%	5.4	%

Supplemental cash flow information related to leases for the thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirty-Nine Weeks Ended
		September 23 2020	September 25 2019
Cash paid for amounts included in the measurement of lease liabilities:
	Operating cash flows from finance leases	161	$	148
	Operating cash flows from operating leases	29,449	27,238
	Financing cash flows from finance leases	1,670	1,433
Right-of-use assets obtained in exchange for lease obligations:
	Finance leases	1,411	1,927
	Operating leases	42,502	65,773

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NON-CONTROLLING INTERESTS

9 Months Ended

Sep. 23, 2020

Noncontrolling Interest [Abstract]

NON-CONTROLLING INTERESTS

NON-CONTROLLING INTERESTSWe are the sole managing member of SSE Holdings and, as a result, consolidate the financial results of SSE Holdings. We report a non-controlling interest representing the economic interest in SSE Holdings held by the other members of SSE Holdings. The Third Amended and Restated Limited Liability Company Agreement, as further amended, (the "LLC Agreement") of SSE Holdings provides that holders of LLC Interests may, from time to time, require SSE Holdings to redeem all or a portion of their LLC Interests for newly-issued shares of Class A common stock on a one-for-one basis. In connection with any redemption or

exchange, we will receive a corresponding number of LLC Interests, increasing our total ownership interest in SSE Holdings. Changes in our ownership interest in SSE Holdings while we retain our controlling interest in SSE Holdings will be accounted for as equity transactions. As such, future redemptions or direct exchanges of LLC Interests in SSE Holdings by the other members of SSE Holdings will result in a change in ownership and reduce the amount recorded as non-controlling interest and increase additional paid-in capital.

On April 17, 2020, we announced an “at-the-market” equity offering program (the “ATM Program”), under which we may offer and sell shares of our Class A common stock having an aggregate price of up to $75,000 from time to time. On April 21, 2020, we completed the sale of 233,467 shares of our Class A common stock pursuant to the ATM Program and received $9,794 of proceeds, net of commissions. The proceeds were used to purchase newly-issued LLC Interests.

On April 21, 2020, we completed an underwritten offering of 3,416,070 shares of our Class A common stock, resulting in $135,857 of proceeds, net of underwriting discounts and commissions. The proceeds were used to purchase newly-issued LLC Interests.

The following table summarizes the ownership interest in SSE Holdings as of September 23, 2020 and December 25, 2019.

	September 23, 2020			December 25, 2019
	LLC Interests	Ownership%		LLC Interests	Ownership %
Number of LLC Interests held by Shake Shack Inc.	38,280,102	92.5	%	34,417,302	91.6	%
Number of LLC Interests held by non-controlling interest holders	3,112,002	7.5	%	3,145,197	8.4	%
Total LLC Interests outstanding	41,392,104	100.0	%	37,562,499	100.0	%

The weighted average ownership percentages for the applicable reporting periods are used to attribute net income (loss) and other comprehensive income (loss) to Shake Shack Inc. and the non-controlling interest holders. The non-controlling interest holders' weighted average ownership percentage for the thirteen and thirty-nine weeks ended September 23, 2020 was 7.5% and 7.9%, respectively. The non-controlling interest holders' weighted average ownership percentage for the thirteen and thirty-nine weeks ended September 25, 2019 was 14.4% and 17.9%, respectively.

The following table summarizes the effects of changes in ownership of SSE Holdings on our equity during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Net income (loss) attributable to Shake Shack Inc.		$	(5,559)	$	10,344	$	(22,730)	$	21,920
Transfers (to) from non-controlling interests:
	Increase in additional paid-in capital as a result of the redemption of LLC Interests	44		1,634		239		7,115
	Increase in additional paid-in-capital as a result of the GTC Merger	—		19,218		—		19,218
	Increase (decrease) in additional paid-in capital as a result of activity under stock compensation plans and the related income tax effect	367		1,789		627		2,718
	Increase in additional paid-in-capital as a result of the issuance of Class A common stock sold in equity offerings	—		—		135,718		—
Total effect of changes in ownership interest on equity attributable to Shake Shack Inc.		$	(5,148)	$	32,985	$	113,854	$	50,971

The following table summarizes redemptions of LLC Interests activity during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

		Thirteen Weeks Ended		Thirty-Nine Weeks Ended
		September 23 2020	September 25 2019	September 23 2020	September 25 2019
Redemption and acquisition of LLC Interests
	Number of LLC Interests redeemed by non-controlling interest holders	5,000	231,599	33,195	1,057,737
	Number of LLC Interests acquired in connection with the Gramercy Tavern Merger	—	2,690,263	—	2,690,263
	Number of LLC Interests received by Shake Shack Inc.	5,000	231,599	33,195	1,057,737
Issuance of Class A common stock
	Shares of Class A common stock issued in connection with redemptions of LLC Interests	5,000	231,599	33,195	1,057,737
	Shares of Class A common stock issued in connection with the Gramercy Tavern Merger	—	2,690,263	—	2,690,263
Cancellation of Class B common stock
	Shares of Class B common stock surrendered and canceled	5,000	231,599	33,195	1,057,737
	Shares of Class B common stock surrendered and canceled in connection with the Gramercy Tavern Merger	—	2,690,263	—	2,690,263

During the thirteen and thirty-nine weeks ended September 23, 2020, we received an aggregate of 38,564 and 180,068 LLC Interests, respectively, in connection with the activity under our stock compensation plan and 172,403 and 383,117 LLC Interests, respectively, during the thirteen and thirty-nine weeks ended September 25, 2019.

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EQUITY-BASED COMPENSATION

9 Months Ended

Sep. 23, 2020

Share-based Payment Arrangement [Abstract]

EQUITY-BASED COMPENSATION

EQUITY-BASED COMPENSATION

A summary of equity-based compensation expense recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Stock options	$	14	$	637	$	301	$	1,974
Performance stock units	233		720		1,009		2,439
Restricted stock units	1,092		522		2,748		1,338
Equity-based compensation expense	$	1,339	$	1,879	$	4,058	$	5,751
Total income tax benefit recognized related to equity-based compensation	$	60	$	48	$	135	$	141

Equity-based compensation expense is included in general and administrative expenses and labor and related expenses on the Condensed Consolidated Statements of Income (Loss) during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
General and administrative expenses	$	1,199	$	1,795	$	3,681	$	5,521
Labor and related expenses	140		84		377		230
Equity-based compensation expense	$	1,339	$	1,879	$	4,058	$	5,751

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INCOME TAXES

9 Months Ended

Sep. 23, 2020

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXESWe are the sole managing member of SSE Holdings and, as a result, consolidate the financial results of SSE Holdings. SSE Holdings is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, SSE Holdings is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by SSE Holdings is passed through to and included in the taxable income or loss of its members, including us, on a pro rata basis. We are subject to U.S. federal income taxes, in addition to state and local income taxes with respect to our allocable share of any taxable income or loss of SSE Holdings, as well as any stand-alone income or loss generated by Shake Shack Inc. We are also subject to withholding taxes in foreign jurisdictions.

Income Tax Expense (Benefit)

A reconciliation of income tax expense (benefit) computed at the U.S. federal statutory income tax rate to the recognized income tax expense (benefit) is as follows:

	Thirteen Weeks Ended								Thirty-Nine Weeks Ended
	September 23 2020				September 25 2019				September 23 2020				September 25 2019
Expected U.S. federal income taxes at statutory rate	$	(1,450)	21.0	%	$	1,738	21.0	%	$	(6,725)	21.0	%	$	5,492	21.0	%
State and local income taxes, net of federal benefit	(492)		7.1	%	505		6.1	%	(2,192)		6.8	%	1,746		6.7	%
Foreign withholding taxes	504		(7.3)	%	655		7.9	%	712		(2.2)	%	1,624		6.2	%
Tax credits	(701)		10.1	%	(2,874)		(34.7)	%	(1,128)		3.5	%	(4,697)		(18.0)	%
Return to provision adjustment	132		(1.9)	%	(153)		(1.8)	%	132		(0.4)	%	(153)		(0.6)	%
Non-controlling interest	(11)		0.2	%	(346)		(4.2)	%	411		(1.3)	%	(1,291)		(4.9)	%
Tax effect of change in basis related to the adoption of ASC 842	—		—	%	—		—	%	—		—	%	1,161		4.4	%
Change in valuation allowance	1,221		(17.7)	%	(2,587)		(31.2)	%	1,971		(6.2)	%	(3,847)		(14.7)	%
Other	—		—	%	(82)		(1.0)	%	17		—	%	(82)		(0.3)	%
Income tax benefit	$	(797)	11.5	%	$	(3,144)	(38.0)	%	$	(6,802)	21.2	%	$	(47)	(0.2)	%

Our effective income tax rates for the thirteen weeks ended September 23, 2020 and September 25, 2019 were 11.5% and (38.0)%, respectively. The increase was primarily driven by lower pre-tax book income resulting in a loss, causing the tax credits to have an increasing effect on the tax rate, as well as the recognition of a valuation allowance against foreign tax credits that are not expected to be realized before the expiration of the carryforward period. Additionally, an increase in our ownership interest in SSE Holdings increases our share of the taxable income (loss) of SSE Holdings. Our weighted-average ownership interest in SSE Holdings was 92.5% and 85.6% for the thirteen weeks ended September 23, 2020 and September 25, 2019, respectively.

Our effective income tax rates for the thirty-nine weeks ended September 23, 2020 and September 25, 2019 were 21.2% and (0.2)%, respectively. The increase was primarily driven by lower pre-tax book income resulting in a loss, causing the tax credits to have an increasing effect on the tax rate, as well as the recognition of a valuation allowance against foreign tax credits that are not expected to be realized before the expiration of the carryforward period. These were partially offset by a reduction in the tax effect of changes related to the adoption of new accounting standards, for which there were none during the thirty-nine weeks ended September 23, 2020. Additionally, as noted above, an increase in our ownership interest in SSE Holdings increases our share of the taxable income (loss) of SSE Holdings. Our weighted-average ownership interest in SSE Holdings was 92.1% and 82.1% for the thirty-nine weeks ended September 23, 2020 and September 25, 2019, respectively.

Deferred Tax Assets and Liabilities

During the thirty-nine weeks ended September 23, 2020, we acquired an aggregate of 213,263 LLC Interests in connection with the redemption of LLC Interests, activity relating to our stock compensation plan, and in connection with the second quarter equity offering. We recognized a deferred tax asset in the amount of $1,562 associated with the basis difference in our investment in SSE Holdings upon acquisition of these LLC Interests. As of September 23, 2020, the total deferred tax asset related to the basis difference in our investment in SSE Holdings was $175,320. However, a portion of the total basis difference will only reverse upon the eventual sale of our interest in SSE Holdings, which we expect would result in a capital loss.

During the thirty-nine weeks ended September 23, 2020, we also recognized $116 of deferred tax assets related to additional tax basis increases generated from expected future payments under the Tax Receivable Agreement and related deductions for imputed interest on such payments. See "Tax Receivable Agreement," herein for more information.

We evaluate the realizability of our deferred tax assets on a quarterly basis and establish valuation allowances when it is more likely than not that all or a portion of a deferred tax asset may not be realized. As of September 23, 2020, we concluded, based on the weight of all available positive and negative evidence, that all of our deferred tax assets (except for those deferred tax assets related to New York City UBT and certain foreign tax credits) are more likely than not to be realized. As such, an

additional valuation allowance of $1,221 was recognized on certain foreign tax credits not expected to be realized before the expiration of the carryforward period.

Uncertain Tax Positions

No uncertain tax positions existed as of September 23, 2020. Shake Shack Inc. was formed in September 2014 and did not engage in any operations prior to our initial public offering in February of 2015 and related organizational transactions. Shake Shack Inc. first filed tax returns for tax year 2014, which is the first tax year subject to examination by taxing authorities for U.S. federal and state income tax purposes. Additionally, although SSE Holdings is treated as a partnership for U.S. federal and state income taxes purposes, it is still required to file an annual U.S. Return of Partnership Income, which is subject to examination by the Internal Revenue Service ("IRS"). The statute of limitations has expired for tax years through 2015 for SSE Holdings.

Tax Receivable Agreement

Pursuant to our election under Section 754 of the Internal Revenue Code (the "Code"), we expect to obtain an increase in our share of the tax basis in the net assets of SSE Holdings when LLC Interests are redeemed or exchanged by the other members of SSE Holdings. We plan to make an election under Section 754 of the Code for each taxable year in which a redemption or exchange of LLC Interest occurs. We intend to treat any redemptions and exchanges of LLC Interests as direct purchases of LLC Interests for U.S. federal income tax purposes. These increases in tax basis may reduce the amounts that we would otherwise pay in the future to various tax authorities. They may also decrease gains (or increase losses) on future dispositions of certain capital assets to the extent tax basis is allocated to those capital assets.

On February 4, 2015, we entered into a tax receivable agreement with certain of the then-existing members of SSE Holdings (the "Tax Receivable Agreement") that provides for the payment by us of 85% of the amount of any tax benefits that we actually realize, or in some cases are deemed to realize, as a result of (i) increases in our share of the tax basis in the net assets of SSE Holdings resulting from any redemptions or exchanges of LLC Interests, (ii) tax basis increases attributable to payments made under the Tax Receivable Agreement, and (iii) deductions attributable to imputed interest pursuant to the Tax Receivable Agreement (the "TRA Payments"). We expect to benefit from the remaining 15% of any tax benefits that we may actually realize. The TRA Payments are not conditioned upon any continued ownership interest in SSE Holdings or us. The rights of each member of SSE Holdings, that is a party to the Tax Receivable Agreement, are assignable to transferees of their respective LLC Interests.

During the thirty-nine weeks ended September 23, 2020, we acquired an aggregate of 33,195 LLC Interests in connection with the redemption of LLC Interests, which resulted in an increase in the tax basis of our investment in SSE Holdings subject to the provisions of the Tax Receivable Agreement. We recognized an additional liability in the amount of $414 for the TRA Payments due to the redeeming members, representing 85% of the aggregate tax benefits we expect to realize from the tax basis increases related to the redemption of LLC Interests, after concluding it was probable that such TRA Payments would be paid based on our estimates of future taxable income. During the thirty-nine weeks ended September 23, 2020 and September 25, 2019, payments of $6,643 and $707, inclusive of interest, were made to the parties to the Tax Receivable Agreement, respectively. As of September 23, 2020, the total amount of TRA Payments due under the Tax Receivable Agreement, was $228,197, of which no amount was included in other current liabilities on the Condensed Consolidated Balance Sheet. See Note 15, Commitments and Contingencies, for more information relating to our liabilities under the Tax Receivable Agreement.

CARES Act

On March 27, 2020, the U.S. government enacted the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) to provide certain relief as a result of the COVID-19 pandemic. The CARES Act provides tax relief, along with other stimulus measures, including a retroactive technical correction of prior tax legislation for tax depreciation of certain qualified improvement property, among other changes.

We are currently estimating the amount of accelerated tax depreciation deductions as a result of the technical amendments made by the CARES Act to qualified improvement property. During the thirty-nine weeks ended September 23, 2020, we recognized accelerated tax depreciation deductions of $446 related to assets placed in service in fiscal 2020, and are recorded as components within our deferred income taxes, net on the Condensed Consolidated Balance Sheets. In addition, subsequent to the second quarter of 2020, we began deferring the employer-paid portion of social security taxes as permitted by the CARES Act.

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EARNINGS PER SHARE

9 Months Ended

Sep. 23, 2020

Earnings Per Share [Abstract]

EARNINGS PER SHARE

EARNINGS (LOSS) PER SHARE

Basic earnings (loss) per share of Class A common stock is computed by dividing net income (loss) attributable to Shake Shack Inc. by the weighted-average number of shares of Class A common stock outstanding during the period. Diluted earnings (loss) per share of Class A common stock is computed by dividing net income (loss) attributable to Shake Shack Inc. by the weighted-average number of shares of Class A common stock outstanding adjusted to give effect to potentially dilutive securities.

The following table sets forth reconciliations of the numerators and denominators used to compute basic and diluted earnings (loss) per share of Class A common stock for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
			September 23 2020		September 25 2019		September 23 2020		September 25 2019
Numerator:
	Net income (loss)		$	(6,110)	$	11,423	$	(25,220)	$	26,201
	Less: net income (loss) attributable to non-controlling interests		(551)		1,079		(2,490)		4,281
	Net income (loss) attributable to Shake Shack Inc.		$	(5,559)	$	10,344	$	(22,730)	$	21,920
Denominator:
	Weighted-average shares of Class A common stock outstanding—basic		38,251		31,961		36,668		30,549
	Effect of dilutive securities:
		Stock options	—		824		—		777
		Performance stock units	—		50		—		64
		Restricted stock units	—		81		—		51
	Weighted-average shares of Class A common stock outstanding—diluted		38,251		32,916		36,668		31,441
Earnings (loss) per share of Class A common stock—basic			$	(0.15)	$	0.32	$	(0.62)	$	0.72
Earnings (loss) per share of Class A common stock—diluted			$	(0.15)	$	0.31	$	(0.62)	$	0.70

Shares of our Class B common stock do not share in the earnings or losses of Shake Shack and are therefore not participating securities. As such, separate presentation of basic and diluted earnings (loss) per share of Class B common stock under the two-class method has not been presented.

The following table presents potentially dilutive securities, as of the end of the period, excluded from the computations of diluted earnings (loss) per share of Class A common stock for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Stock options	764,902	(1)	—		764,902	(1)	—
Performance stock units	139,081	(1)	66,101	(2)	139,081	(1)	66,101	(2)
Restricted stock units	262,232	(1)	—		262,232	(1)	—
Shares of Class B common stock	3,112,002	(3)	3,809,347	(3)	3,112,002	(3)	3,809,347	(3)

(1)    Represents number of instruments outstanding at the end of the period that were excluded from the computation of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive.

(2)    Excluded from the computation of diluted earnings per share of Class A common stock because the performance conditions associated with these awards were not met assuming the end of the reporting period was the end of the performance period.

(3) Shares of our Class B common stock outstanding as of the end of the period are considered potentially dilutive shares of Class A common stock. Amounts have been excluded from the computations of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive under the if-converted and two-class methods.

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COMMITMENTS AND CONTINGENCIES

9 Months Ended

Sep. 23, 2020

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Lease Commitments

We are obligated under various operating leases for Shacks and our home office space, expiring in various years through 2036. Under certain of these leases, we are liable for contingent rent based on a percentage of sales in excess of specified thresholds and are typically responsible for our proportionate share of real estate taxes, common area maintenance charges and utilities. See Note 9, Leases.

As security under the terms of one of our leases, we are obligated under a letter of credit totaling $130 as of September 23, 2020, which expires in February 2026. Additionally, in September 2017, we entered into a letter of credit in conjunction with our new home office lease in the amount of $603, which expires in August 2021 and renews automatically for one-year periods through January 31, 2034.

Purchase Commitments

Purchase obligations include legally binding contracts, including commitments for the purchase, construction or remodeling of real estate and facilities, firm minimum commitments for inventory purchases, equipment purchases, marketing-related contracts, software acquisition/license commitments and service contracts. These obligations are generally short-term in nature and are recorded as liabilities when the related goods are received or services rendered. We also enter into long-term, exclusive contracts with certain vendors to supply us with food, beverages and paper goods, obligating us to purchase specified quantities.

Legal Contingencies

In February 2018, a claim was filed against Shake Shack in California state court alleging certain violations of the California Labor Code. At a mediation between the parties, we agreed to settle the matter with the plaintiff and all other California employees who elect to participate in the settlement for $1,200. As of September 23, 2020, an accrual in the amount of $1,180 was recorded for this matter and related expenses.

We are subject to various legal proceedings, claims and liabilities, such as employment-related claims and slip and fall cases, which arise in the ordinary course of business and are generally covered by insurance. As of September 23, 2020, the amount of the ultimate liability with respect to these matters was not material.

Liabilities under Tax Receivable Agreement

As described in Note 12, Income Taxes, we are a party to the Tax Receivable Agreement under which we are contractually committed to pay certain of the members of SSE Holdings 85% of the amount of any tax benefits that we actually realize, or in some cases are deemed to realize, as a result of certain transactions. We are not obligated to make any payments under the Tax Receivable Agreement until the tax benefits associated with the transactions that gave rise to the payments are realized. Amounts payable under the Tax Receivable Agreement are contingent upon, among other things, (i) generation of future taxable income over the term of the Tax Receivable Agreement and (ii) future changes in tax laws. If we do not generate sufficient taxable income in the aggregate over the term of the Tax Receivable Agreement to utilize the tax benefits, then we would not be required to make the related TRA Payments. During the thirty-nine weeks ended September 23, 2020 and September 25, 2019, we recognized liabilities totaling $414 and $20,027, respectively, relating to our obligations under the Tax Receivable Agreement, after concluding that it was probable that we would have sufficient future taxable income over the term of the Tax Receivable Agreement to utilize the related tax benefits. As of September 23, 2020 and December 25, 2019, our total obligations under the Tax Receivable Agreement were $228,197 and $234,426, respectively. There were no transactions subject to the Tax Receivable Agreement for which we did not recognize the related liability, as we concluded that we would have sufficient future taxable income to utilize all of the related tax benefits.

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RELATED PARTY TRANSACTIONS

9 Months Ended

Sep. 23, 2020

Related Party Transactions [Abstract]

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS

Union Square Hospitality Group

The Chairman of our Board of Directors serves as the Chief Executive Officer of Union Square Hospitality Group, LLC. As a result, Union Square Hospitality Group, LLC and its subsidiaries, set forth below, are considered related parties.

Hudson Yards Sports and Entertainment

In fiscal 2011, we entered into a Master License Agreement (as amended, "MLA") with Hudson Yards Sports and Entertainment LLC ("HYSE") to operate Shake Shack branded limited menu concession stands in sports and entertainment venues within the United States. In February 2019, the agreement was assigned to Hudson Yards Catering ("HYC"), the parent of HYSE. The agreement expires in January 2027 and includes five consecutive five-year renewal options at HYC's option. As consideration for these rights, HYC pays us a license fee based on a percentage of net food sales, as defined in the MLA. HYC also pays us a percentage of profits on sales of branded beverages, as defined in the MLA.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts received from HYC	Licensing revenue	$	26	$	250	$	60	$	401

	Classification	September 23 2020		December 25 2019
Amounts due from HYC	Accounts Receivable	$	9	$	47

Madison Square Park Conservancy

The Chairman of our Board of Directors serves as a director of the Madison Square Park Conservancy ("MSP Conservancy"), with which we have a license agreement and pay license fees to operate our Madison Square Park Shack.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to MSP Conservancy	Occupancy and related expenses	$	173	$	138	$	392	$	692

	Classification	September 23 2020		December 25 2019
Amounts due to MSP Conservancy	Accrued expenses	$	249	$	53

Share Our Strength

The Chairman of our Board of Directors serves as a director of Share Our Strength, for which Shake Shack holds the "Great American Shake Sale" to raise money and awareness for childhood hunger. During the Great American Shake Sale, we encourage guests to donate money to Share Our Strength's No Kid Hungry campaign in exchange for a coupon for a free shake. All of the guest donations we collect go directly to Share Our Strength. Amounts raised through donations during the thirteen weeks ended September 25, 2019, were payable to Share Our Strength as of September 25, 2019.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts raised through donations	—	$	—	$	190	$	—	$	190
Costs incurred for free shakes redeemed	General and administrative expenses	$	—	$	30	$	—	$	30

Olo, Inc.

The Chairman of our Board of Directors serves as a director of Olo, Inc. (formerly known as "Mobo Systems, Inc."), a platform we use in connection with our mobile ordering application. No amounts were due to Olo as of September 23, 2020 and December 25, 2019, respectively.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to Olo	Other operating expenses	$	75	$	44	$	169	$	122

Square, Inc.

Our Chief Executive Officer is a member of the Board of Directors of Square, Inc. ("Square"). We currently use certain point-of-sale applications, payment processing services, hardware and other enterprise platform services in connection with the processing of a limited amount of sales at certain of our locations, sales for certain off-site events and in connection with our kiosk technology. No amounts were due to Square as of September 23, 2020 and December 25, 2019, respectively.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to Square	Other operating expenses	$	419	$	487	$	1,208	$	1,195

Tax Receivable Agreement

As described in Note 12, Income Taxes, we entered into a tax receivable agreement with certain members of SSE Holdings that provides for the payment by us of 85% of the amount of tax benefits, if any, that Shake Shack actually realizes or in some cases is deemed to realize as a result of certain transactions.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to members (inclusive of interest)	Other current liabilities	$	—	$	—	$	6,643	$	707

	Classification	September 23 2020		December 25 2019
Amounts due under the Tax Receivable Agreement	Other current liabilities Liabilities under tax receivable agreement, net of current portion	$	228,197	$	234,426

Distributions to Members of SSE Holdings

Under the terms of the SSE Holdings LLC Agreement, SSE Holdings is obligated to make tax distributions to its members. No tax distributions were payable to non-controlling interest holders as of September 23, 2020 and December 25, 2019, respectively.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Amounts paid to non-controlling interest holders	Net income attributable to non-controlling interests	$	164	$	39	$	478	$	1,706

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

9 Months Ended

Sep. 23, 2020

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the accounts of Shake Shack Inc. and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. These interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and on a basis consistent in all material respects with the accounting policies described in our Annual Report on Form 10-K for the fiscal year ended December 25, 2019 ("2019 Form 10-K"). Certain information and footnote disclosures normally presented in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes thereto included in our 2019 Form 10-K. In our opinion, all adjustments, which are normal and recurring in nature, necessary for a fair presentation of our financial position and results of operation have been included. Operating results for interim periods are not necessarily indicative of the results that may be expected for a full fiscal year.

SSE Holdings is considered a variable interest entity. Shake Shack Inc. is the primary beneficiary as we have the majority economic interest in SSE Holdings and, as the sole managing member, have decision making authority that significantly affects the economic performance of the entity, while the limited partners have no substantive kick-out or participating rights. As a result, we consolidate SSE Holdings. The assets and liabilities of SSE Holdings represent substantially all of our consolidated assets and liabilities with the exception of certain deferred taxes and liabilities under the Tax Receivable Agreement. As of September 23, 2020 and December 25, 2019, the net assets of SSE Holdings were $388,789 and $270,542, respectively. The assets of SSE Holdings are subject to certain restrictions in SSE Holdings' revolving credit agreement. See Note 8, Debt, for more information.

Fiscal Year

Fiscal Year

We operate on a 52/53 week fiscal year ending on the last Wednesday in December. Fiscal 2020 contains 53 weeks and ends on December 30, 2020. Fiscal 2019 contained 52 weeks and ended on December 25, 2019. Unless otherwise stated, references to years in this report relate to fiscal years.

Use of Estimates

Use of Estimates

The preparation of these condensed consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the

date of the financial statements, and the reported amounts of sales and expenses during the reporting period. Actual results could differ from those estimates.

Recently Adopted and Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements   

We adopted the Accounting Standards Updates (“ASUs”) summarized below in fiscal 2020.

Accounting Standards Update (“ASU”)	Description	Date Adopted
Measurement of Credit Losses on Financial Instruments (ASU 2016-13)	This standard replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The adoption of this standard did not have a material impact to our consolidated financial statements.	December 26, 2019
Facilitation of the Effects of Reference Rate Reform on Financial Reporting (ASU 2020-04)	This standard provides optional guidance for a limited time to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. The adoption of this standard did not have a material impact to our consolidated financial statements.	Effective upon issuance (March 12, 2020)

Recently Issued Accounting Pronouncements   

Accounting Standards Update (“ASU”)	Description	Expected Impact	Effective Date
Simplifying the Accounting for Income Taxes (ASU 2019-12)	This standard simplifies various aspects related to accounting for income taxes by removing certain exceptions to the general principles in ASC 740, “Income Taxes” (“ASC 740”), and clarifying certain aspects of the current guidance to promote consistency among reporting entities.	The adoption of this standard is not expected to have a material impact on our consolidated financial statements.	December 31, 2020 Early adoption is permitted.

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REVENUE (Tables)

9 Months Ended

Sep. 23, 2020

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

Revenue recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019, disaggregated by type is as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Shack sales	$	126,288	$	152,366	$	353,855	$	428,811
Licensing revenue:
Sales-based royalties	3,867		5,293		10,943		13,938
Initial territory and opening fees	246		103		559		335
Total revenue	$	130,401	$	157,762	$	365,357	$	443,084

Schedule of Contract with Customer, Asset and Liability

Opening and closing balances of contract liabilities and receivables from contracts with customers is as follows:

	September 23 2020		December 26 2019
Shack sales receivables	$	4,257	$	4,265
Licensing receivables	2,755		4,510
Gift card liability	2,205		2,258
Deferred revenue, current	564		511
Deferred revenue, long-term	12,144		11,310

Revenue recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 that was included in their respective liability balances at the beginning of the period is as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Gift card liability	$	91	$	84	$	436	$	467
Deferred revenue	234		86		539		305

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FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Sep. 23, 2020

Fair Value Disclosures [Abstract]

Schedule of Cash and Cash Equivalents

The following tables summarize our cash, cash equivalents and marketable securities by significant investment categories as of September 23, 2020 and December 25, 2019:

		September 23, 2020
		Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cash and Cash Equivalents		Marketable Securities
Cash		$	174,883	$	—	$	—	$	174,883	$	174,883	$	—
Level 1:
	Money market funds	—		—		—		—		—		—
	Mutual funds	16,829		50		—		16,879		—		16,879
Total		$	191,712	$	50	$	—	$	191,762	$	174,883	$	16,879

		December 25, 2019
		Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cash and Cash Equivalents		Marketable Securities
Cash		$	32,094	$	—	$	—	$	32,094	$	32,094	$	—
Level 1:
	Money market funds	5,005		—		—		5,005		5,005		—
	Mutual funds	36,436		72		—		36,508		—		36,508
Total		$	73,535	$	72	$	—	$	73,607	$	37,099	$	36,508

Schedule of Other Income From Available for Sale Securities

A summary of other income (loss) from equity securities recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Equity securities:
	Dividend income	$	40	$	254	$	290	$	997
	Realized gain (loss) on sale of investments	—		—		79		22
	Unrealized gain (loss) on equity securities	—		—		(22)		231
Total		$	40	$	254	$	347	$	1,250

Schedule of Available-for-sale Securities and Gross Realized Gains and Losses

A summary of equity securities sold and gross realized gains and losses recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Equity securities:
	Gross proceeds from sales and redemptions	$	—	$	—	$	20,000	$	27,000
	Cost basis of sales and redemptions	—		—		19,921		26,978
	Gross realized gains included in net income (loss)	—		—		79		36
	Gross realized losses included in net income (loss)	—		—		—		(14)

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INVENTORIES (Tables)

9 Months Ended

Sep. 23, 2020

Inventory Disclosure [Abstract]

Inventories

Inventories are stated at the lower of cost or net realizable value with cost determined on a first-in, first-out basis. We make adjustments to our inventory reserves for inventories that are deemed to be obsolete or slow moving. As of September 23, 2020 and December 25, 2019, no adjustment was deemed necessary to reduce inventory to net realizable value. Inventories as of September 23, 2020 and December 25, 2019 consisted of the following:

	September 23 2020		December 25 2019
Food	$	1,477	$	1,738
Wine	81		107
Beer	113		114
Beverages	209		233
Retail merchandise	76		29
Paper goods	427		—
Inventories	$	2,383	$	2,221

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PROPERTY AND EQUIPMENT (Tables)

9 Months Ended

Sep. 23, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property and equipment as of September 23, 2020 and December 25, 2019 consisted of the following:

	September 23 2020		December 25 2019
Leasehold improvements	$	328,686	$	302,204
Equipment	58,951		54,404
Furniture and fixtures	19,400		18,082
Computer equipment and software	27,160		24,226
Financing equipment lease assets	8,774		7,442
Construction in progress	37,560		30,290
Property and equipment, gross	480,531		436,648
Less: accumulated depreciation	154,005		121,786
Property and equipment, net	$	326,526	$	314,862

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SUPPLEMENTAL BALANCE SHEET INFORMATION (Tables)

9 Months Ended

Sep. 23, 2020

Supplemental Balance Sheet Disclosures [Abstract]

Supplemental Balance Sheet Information

The components of other current liabilities as of September 23, 2020 and December 25, 2019 are as follows:

	September 23 2020		December 25 2019
Sales tax payable	$	3,202	$	4,086
Current portion of liabilities under tax receivable agreement	—		7,777
Gift card liability	2,205		2,258
Current portion of financing equipment lease liabilities	1,740		1,873
Other	5,433		3,505
Other current liabilities	$	12,580	$	19,499

The components of other long-term liabilities as of September 23, 2020 and December 25, 2019 are as follows:

	September 23 2020		December 25 2019
Deferred licensing revenue	$	12,144	$	11,310
Long-term portion of financing equipment lease liabilities	3,492		3,643
Other(1)	6,192		375
Other long-term liabilities	$	21,828	$	15,328

(1)    As of September 23, 2020, Other included $3,388 of deferred lease incentive liabilities related to leases with variable lease cost as well as $2,461 of deferred social security taxes associated with the CARES Act. For further information relating to the CARES Act, see Note 12, Income Taxes.

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Leases (Tables)

9 Months Ended

Sep. 23, 2020

Leases [Abstract]

Lease, Cost

A summary of finance and operating lease right-of-use assets and liabilities as of September 23, 2020 and December 25, 2019 is as follows:

	Classification	September 23 2020		December 25 2019
Finance leases	Property and equipment, net	$	5,109	$	5,444
Operating leases	Operating lease assets	305,133		274,426
Total right-of-use assets		$	310,242	$	279,870
Finance leases:
	Other current liabilities	$	1,740	$	1,873
	Other long-term liabilities	3,493		3,643
Operating leases:
	Operating lease liabilities, current	34,859		30,002
	Long-term operating lease liabilities	336,149		304,914
Total lease liabilities		$	376,241	$	340,432

The components of lease expense for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 was as follows:

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		Classification	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Finance lease cost:
	Amortization of right-of-use assets	Depreciation expense	$	531	$	538	$	1,710	$	1,491
	Interest on lease liabilities	Interest expense	51		52		161		148
Operating lease cost		Occupancy and related expenses General and administrative expenses Pre-opening costs	11,506		10,564		33,726		29,329
Short-term lease cost		Occupancy and related expenses	138		279		331		313
Variable lease cost		Other operating expenses Occupancy and related expenses General and administrative expenses Pre-opening costs	3,267		4,338		9,413		11,636
Total lease cost			$	15,493	$	15,771	$	45,341	$	42,917

A summary of lease terms and discount rates for finance and operating leases as of September 23, 2020 and December 25, 2019 is as follows:

		September 23 2020		December 25 2019
Weighted-average remaining lease term (years):
	Finance leases	5.3		5.1
	Operating leases	9.8		10.1
Weighted-average discount rate:
	Finance leases	3.6	%	3.7	%
	Operating leases	3.8	%	5.4	%

Supplemental cash flow information related to leases for the thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

		Thirty-Nine Weeks Ended
		September 23 2020	September 25 2019
Cash paid for amounts included in the measurement of lease liabilities:
	Operating cash flows from finance leases	161	$	148
	Operating cash flows from operating leases	29,449	27,238
	Financing cash flows from finance leases	1,670	1,433
Right-of-use assets obtained in exchange for lease obligations:
	Finance leases	1,411	1,927
	Operating leases	42,502	65,773

Lessee, Operating Lease, Liability, Maturity

As of September 23, 2020, future minimum lease payments for finance and operating leases consisted of the following:

	Finance Leases		Operating Leases
2020	$	527	$	16,785
2021	1,890		46,943
2022	1,400		53,151
2023	896		53,705
2024	541		52,785
Thereafter	406		268,128
Total minimum payments	5,660		491,497
Less: imputed interest	427		120,489
Total lease liabilities	$	5,233	$	371,008

Finance Lease, Liability, Maturity

As of September 23, 2020, future minimum lease payments for finance and operating leases consisted of the following:

	Finance Leases		Operating Leases
2020	$	527	$	16,785
2021	1,890		46,943
2022	1,400		53,151
2023	896		53,705
2024	541		52,785
Thereafter	406		268,128
Total minimum payments	5,660		491,497
Less: imputed interest	427		120,489
Total lease liabilities	$	5,233	$	371,008

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NON-CONTROLLING INTERESTS (Tables)

9 Months Ended

Sep. 23, 2020

Noncontrolling Interest [Abstract]

Schedule of Ownership Interests in SSE Holdings

The following table summarizes the ownership interest in SSE Holdings as of September 23, 2020 and December 25, 2019.

	September 23, 2020			December 25, 2019
	LLC Interests	Ownership%		LLC Interests	Ownership %
Number of LLC Interests held by Shake Shack Inc.	38,280,102	92.5	%	34,417,302	91.6	%
Number of LLC Interests held by non-controlling interest holders	3,112,002	7.5	%	3,145,197	8.4	%
Total LLC Interests outstanding	41,392,104	100.0	%	37,562,499	100.0	%

Schedule of Non-Controlling Interest

The following table summarizes the effects of changes in ownership of SSE Holdings on our equity during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

		Thirteen Weeks Ended				Thirty-Nine Weeks Ended
		September 23 2020		September 25 2019		September 23 2020		September 25 2019
Net income (loss) attributable to Shake Shack Inc.		$	(5,559)	$	10,344	$	(22,730)	$	21,920
Transfers (to) from non-controlling interests:
	Increase in additional paid-in capital as a result of the redemption of LLC Interests	44		1,634		239		7,115
	Increase in additional paid-in-capital as a result of the GTC Merger	—		19,218		—		19,218
	Increase (decrease) in additional paid-in capital as a result of activity under stock compensation plans and the related income tax effect	367		1,789		627		2,718
	Increase in additional paid-in-capital as a result of the issuance of Class A common stock sold in equity offerings	—		—		135,718		—
Total effect of changes in ownership interest on equity attributable to Shake Shack Inc.		$	(5,148)	$	32,985	$	113,854	$	50,971

Redemption of LLC Interests

The following table summarizes redemptions of LLC Interests activity during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

		Thirteen Weeks Ended		Thirty-Nine Weeks Ended
		September 23 2020	September 25 2019	September 23 2020	September 25 2019
Redemption and acquisition of LLC Interests
	Number of LLC Interests redeemed by non-controlling interest holders	5,000	231,599	33,195	1,057,737
	Number of LLC Interests acquired in connection with the Gramercy Tavern Merger	—	2,690,263	—	2,690,263
	Number of LLC Interests received by Shake Shack Inc.	5,000	231,599	33,195	1,057,737
Issuance of Class A common stock
	Shares of Class A common stock issued in connection with redemptions of LLC Interests	5,000	231,599	33,195	1,057,737
	Shares of Class A common stock issued in connection with the Gramercy Tavern Merger	—	2,690,263	—	2,690,263
Cancellation of Class B common stock
	Shares of Class B common stock surrendered and canceled	5,000	231,599	33,195	1,057,737
	Shares of Class B common stock surrendered and canceled in connection with the Gramercy Tavern Merger	—	2,690,263	—	2,690,263

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EQUITY-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 23, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Equity-Based Compensation Expense Recognized

A summary of equity-based compensation expense recognized during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 is as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Stock options	$	14	$	637	$	301	$	1,974
Performance stock units	233		720		1,009		2,439
Restricted stock units	1,092		522		2,748		1,338
Equity-based compensation expense	$	1,339	$	1,879	$	4,058	$	5,751
Total income tax benefit recognized related to equity-based compensation	$	60	$	48	$	135	$	141

Equity-based compensation expense is included in general and administrative expenses and labor and related expenses on the Condensed Consolidated Statements of Income (Loss) during the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019 as follows:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
General and administrative expenses	$	1,199	$	1,795	$	3,681	$	5,521
Labor and related expenses	140		84		377		230
Equity-based compensation expense	$	1,339	$	1,879	$	4,058	$	5,751

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INCOME TAXES (Tables)

9 Months Ended

Sep. 23, 2020

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

A reconciliation of income tax expense (benefit) computed at the U.S. federal statutory income tax rate to the recognized income tax expense (benefit) is as follows:

	Thirteen Weeks Ended								Thirty-Nine Weeks Ended
	September 23 2020				September 25 2019				September 23 2020				September 25 2019
Expected U.S. federal income taxes at statutory rate	$	(1,450)	21.0	%	$	1,738	21.0	%	$	(6,725)	21.0	%	$	5,492	21.0	%
State and local income taxes, net of federal benefit	(492)		7.1	%	505		6.1	%	(2,192)		6.8	%	1,746		6.7	%
Foreign withholding taxes	504		(7.3)	%	655		7.9	%	712		(2.2)	%	1,624		6.2	%
Tax credits	(701)		10.1	%	(2,874)		(34.7)	%	(1,128)		3.5	%	(4,697)		(18.0)	%
Return to provision adjustment	132		(1.9)	%	(153)		(1.8)	%	132		(0.4)	%	(153)		(0.6)	%
Non-controlling interest	(11)		0.2	%	(346)		(4.2)	%	411		(1.3)	%	(1,291)		(4.9)	%
Tax effect of change in basis related to the adoption of ASC 842	—		—	%	—		—	%	—		—	%	1,161		4.4	%
Change in valuation allowance	1,221		(17.7)	%	(2,587)		(31.2)	%	1,971		(6.2)	%	(3,847)		(14.7)	%
Other	—		—	%	(82)		(1.0)	%	17		—	%	(82)		(0.3)	%
Income tax benefit	$	(797)	11.5	%	$	(3,144)	(38.0)	%	$	(6,802)	21.2	%	$	(47)	(0.2)	%

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EARNINGS PER SHARE (Tables)

9 Months Ended

Sep. 23, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share

The following table sets forth reconciliations of the numerators and denominators used to compute basic and diluted earnings (loss) per share of Class A common stock for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
			September 23 2020		September 25 2019		September 23 2020		September 25 2019
Numerator:
	Net income (loss)		$	(6,110)	$	11,423	$	(25,220)	$	26,201
	Less: net income (loss) attributable to non-controlling interests		(551)		1,079		(2,490)		4,281
	Net income (loss) attributable to Shake Shack Inc.		$	(5,559)	$	10,344	$	(22,730)	$	21,920
Denominator:
	Weighted-average shares of Class A common stock outstanding—basic		38,251		31,961		36,668		30,549
	Effect of dilutive securities:
		Stock options	—		824		—		777
		Performance stock units	—		50		—		64
		Restricted stock units	—		81		—		51
	Weighted-average shares of Class A common stock outstanding—diluted		38,251		32,916		36,668		31,441
Earnings (loss) per share of Class A common stock—basic			$	(0.15)	$	0.32	$	(0.62)	$	0.72
Earnings (loss) per share of Class A common stock—diluted			$	(0.15)	$	0.31	$	(0.62)	$	0.70

The following table presents potentially dilutive securities, as of the end of the period, excluded from the computations of diluted earnings (loss) per share of Class A common stock for the thirteen and thirty-nine weeks ended September 23, 2020 and September 25, 2019.

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 23 2020		September 25 2019		September 23 2020		September 25 2019
Stock options	764,902	(1)	—		764,902	(1)	—
Performance stock units	139,081	(1)	66,101	(2)	139,081	(1)	66,101	(2)
Restricted stock units	262,232	(1)	—		262,232	(1)	—
Shares of Class B common stock	3,112,002	(3)	3,809,347	(3)	3,112,002	(3)	3,809,347	(3)

(1)    Represents number of instruments outstanding at the end of the period that were excluded from the computation of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive.

(2)    Excluded from the computation of diluted earnings per share of Class A common stock because the performance conditions associated with these awards were not met assuming the end of the reporting period was the end of the performance period.

(3) Shares of our Class B common stock outstanding as of the end of the period are considered potentially dilutive shares of Class A common stock. Amounts have been excluded from the computations of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive under the if-converted and two-class methods.

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NATURE OF OPERATIONS (Details)	Sep. 23, 2020 Restaurant Shack
Class of Stock [Line Items]
Number of restaurants	298
United States | Company-operated
Class of Stock [Line Items]
Number of restaurants	175
Number of Shacks closed | Shack	8
United States | Licensed
Class of Stock [Line Items]
Number of restaurants	22
Number of Shacks closed | Shack	18
Non-United States | Licensed
Class of Stock [Line Items]
Number of restaurants	101

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019
Variable Interest Entity [Line Items]
Net assets held by SSE holders	$ 1,137,202	$ 968,268
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Net assets held by SSE holders	$ 388,789	$ 270,542

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REVENUE - Narrative (Details) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other long-term liabilities	$ 21,828	$ 15,328
Other current liabilities	12,580	$ 19,499
Revenue, remaining performance obligation	$ 17,048

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REVENUE - Schedule of Revenue Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 130,401	$ 157,762	$ 365,357	$ 443,084

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REVENUE - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 130,401	$ 157,762	$ 365,357	$ 443,084
Shack Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	126,288	152,366	353,855	428,811
Sales-Based Royalties [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,867	5,293	10,943	13,938
Initial territory and opening fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 246	$ 103	$ 559	$ 335

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REVENUE - Schedule of Respective Liability Balances (Details) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Gift card liability	$ 2,205	$ 2,258
Deferred revenue, current	564	511
Deferred revenue, long-term	12,144	11,310
Shack Sales [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, asset, net	4,257	4,265
Licensing receivables
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, asset, net	$ 2,755	$ 4,510

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REVENUE - Liability Balance (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Revenue from Contract with Customer [Abstract]
Gift card liability	$ 91	$ 84	$ 436	$ 467
Deferred revenue	$ 234	$ 86	$ 539	$ 305

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FAIR VALUE MEASUREMENTS - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019
Debt Securities, Available-for-sale [Line Items]
Cost Basis	$ 174,883	$ 37,099
Total cost basis including Mutual Funds	191,712	73,535
Gross Unrealized Gains	50	72
Gross Unrealized Losses	0	0
Cash and cash equivalents fair value	174,883	37,099
Fair value of marketable securities	16,879	36,508
Fair Value	191,762	73,607
Level 1 | Mutual funds
Debt Securities, Available-for-sale [Line Items]
Mutual funds	16,829	36,436
Gross Unrealized Gains	50	72
Gross Unrealized Losses	0	0
Fair value of marketable securities	16,879	36,508
Cash
Debt Securities, Available-for-sale [Line Items]
Cost Basis	174,883	32,094
Cash and cash equivalents fair value	174,883	32,094
Money market funds | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost Basis	0	5,005
Cash and cash equivalents fair value	$ 0	$ 5,005

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FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized Gain (Loss) on Securities		$ (22,000)	$ 231,000
Asset impairment charges	$ 0	1,132,000
Property, Plant and Equipment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges		736,000
Operating Lease, Right-of-Use Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges		383,000
Finance Lease, Right-of-Use Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges		$ 13,000

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FAIR VALUE MEASUREMENTS - Other Income From Available For Sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Available-for-sale securities
Unrealized Gain (Loss) on Securities			$ (22)	$ 231
Total	$ 34	$ 248	335	1,259
Available-for-sale Securities
Available-for-sale securities
Dividend income	40	254	290	997
Realized gain (loss) on sale of investments	0	0	79	22
Unrealized Gain (Loss) on Securities	0	0	(22)	231
Total	$ 40	$ 254	$ 347	$ 1,250

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FAIR VALUE MEASUREMENTS - Available for Sale Securities and Gross Realized Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Equity securities:
Gross proceeds from sales and redemptions	$ 0	$ 0	$ 20,000	$ 27,000
Cost basis of sales and redemptions	0	0	19,921	26,978
Gross realized gains included in net income (loss)	0	0	79	36
Gross realized losses included in net income (loss)	$ 0	$ 0	$ 0	$ (14)

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INVENTORIES (Details) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019
Inventory [Line Items]
Inventories	$ 2,383	$ 2,221
Food
Inventory [Line Items]
Inventories	1,477	1,738
Wine
Inventory [Line Items]
Inventories	81	107
Beer
Inventory [Line Items]
Inventories	113	114
Beverages
Inventory [Line Items]
Inventories	209	233
Retail merchandise
Inventory [Line Items]
Inventories	76	29
Paper goods
Inventory [Line Items]
Inventories	$ 427	$ 0

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PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 480,531	$ 436,648
Less: accumulated depreciation	154,005	121,786
Property and equipment, net	326,526	314,862
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	328,686	302,204
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	58,951	54,404
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,400	18,082
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	27,160	24,226
Financing equipment lease assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,774	7,442
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 37,560	$ 30,290

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SUPPLEMENTAL BALANCE SHEET INFORMATION (Details) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019
Supplemental Balance Sheet Disclosures [Abstract]
Finance Lease, Liability, Current	$ 1,740	$ 1,873
Other Liabilities, Current
Sales tax payable	3,202	4,086
Current portion of liabilities under tax receivable agreement	0	7,777
Gift card liability	2,205	2,258
Other	5,433	3,505
Other current liabilities	$ 12,580	$ 19,499

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SUPPLEMENTAL BALANCE SHEET INFORMATION Other long-term liabilities (Details) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019
Other Liabilities Disclosure [Abstract]
Contract with Customer, Liability, Noncurrent	$ 12,144	$ 11,310
Finance Lease, Liability, Noncurrent	3,492	3,643
Other Sundry Liabilities, Noncurrent	6,192	375
Other Liabilities, Noncurrent	21,828	$ 15,328
Deferred lease incentive liabilities	3,388
Deferred social security taxes	$ 2,461

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DEBT (Details) - USD ($)		1 Months Ended		3 Months Ended		9 Months Ended
	Feb. 04, 2015	May 31, 2020	Mar. 31, 2020	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019	Apr. 30, 2020
Debt Instrument [Line Items]
Proceeds from revolving credit facility						$ 50,000,000	$ 0
Interest costs incurred				$ 143,000	$ 133,000	697,000	$ 302,000
Notes payable
Debt Instrument [Line Items]
Proceeds from revolving credit facility			$ 50,000,000
Notes payable				50,000,000		50,000,000
Notes Payable to Banks
Debt Instrument [Line Items]
Proceeds from bank debt								$ 10,000,000
Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity				50,000,000		50,000,000
Line of Credit Facility, Incremental Borrowing Capacity				100,000,000		100,000,000
Third Amendment and Restated Credit Arrangement | Line of credit
Debt Instrument [Line Items]
Term to maturity	5 years
Third Amendment and Restated Credit Arrangement | Letter of credit | Line of credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 15,000,000		$ 15,000,000
Third Amendment and Restated Credit Arrangement | Minimum | Line of credit | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate						1.00%
Third Amendment and Restated Credit Arrangement | Minimum | Line of credit | Prime rate
Debt Instrument [Line Items]
Basis spread on variable rate						0.00%
Third Amendment and Restated Credit Arrangement | Maximum | Line of credit | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate						1.50%
Third Amendment and Restated Credit Arrangement | Maximum | Line of credit | Prime rate
Debt Instrument [Line Items]
Basis spread on variable rate						0.50%
First Amendment to the Credit Agreement | Line of credit
Debt Instrument [Line Items]
Debt instrument, minimum required liquidity		$ 25,000,000
First Amendment to the Credit Agreement | Minimum | Line of credit | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
First Amendment to the Credit Agreement | Minimum | Line of credit | Prime rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.00%
First Amendment to the Credit Agreement | Maximum | Line of credit | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate		2.50%
First Amendment to the Credit Agreement | Maximum | Line of credit | Prime rate
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%

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Leases Schedule of Accounting Pronouncements (Details) - USD ($) $ in Thousands	Sep. 23, 2020	Dec. 25, 2019	Sep. 25, 2019
Leases [Abstract]
Prepaid Expense and Other Assets, Current	$ 2,636	$ 1,877
Property and equipment, net	(326,526)	(314,862)
Operating lease assets	305,133	274,426	$ 274,426
Long-term operating lease liabilities	336,149	304,914	$ 304,914
Other long-term liabilities	21,828	15,328
Retained earnings	31,637	54,367
Non-controlling interests	$ 29,070	$ 23,168

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Lease Narrative (Details)	9 Months Ended
	Sep. 23, 2020 option
Operating Leased Assets [Line Items]
Number of renewal options	2
Renewal term	5 years
Minimum
Operating Leased Assets [Line Items]
Term of contract	10 years
Maximum
Operating Leased Assets [Line Items]
Term of contract	15 years

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Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019	Dec. 25, 2019
Leases [Abstract]
Finance leases	$ 5,109	$ 5,444	$ 5,109	$ 5,444
Operating leases	305,133	274,426	305,133	274,426	$ 274,426
Total right-of-use assets	310,242	279,870	310,242	279,870
Other current liabilities, finance leases	1,740	1,873	1,740	1,873
Other long-term liabilities, finance leases	3,493	3,643	3,493	3,643
Operating lease liabilities, current	34,859	30,002	34,859	30,002	30,002
Long-term operating lease liabilities	336,149	304,914	336,149	304,914	$ 304,914
Finance leases	5,233		5,233
Operating leases	371,008		371,008
Total lease liabilities	376,241	340,432	376,241	340,432
Finance lease cost:
Amortization of right-of-use assets	531	538	1,710	1,491
Interest on lease liabilities	51	52	161	148
Operating lease cost	11,506	10,564	33,726	29,329
Short-term lease cost	138	279	331	313
Variable lease cost	3,267	4,338	9,413	11,636
Total lease cost	$ 15,493	$ 15,771	$ 45,341	42,917
Weighted Average Lease Term [Abstract]
Finance leases	5 years 3 months 18 days		5 years 3 months 18 days		5 years 1 month 6 days
Operating leases	9 years 9 months 18 days		9 years 9 months 18 days		10 years 1 month 6 days
Weighted Average Discount Rate [Abstract]
Finance leases	3.60%		3.60%		3.70%
Operating leases	3.80%		3.80%		5.40%
Operating cash flows from finance leases			$ 161	148
Operating cash flows from operating leases			29,449	27,238
Financing cash flows from finance leases			1,670	1,433
Finance leases			1,411	1,927
Operating leases			$ 42,502	$ 65,773

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Lease Maturity (Details) $ in Thousands	Sep. 23, 2020 USD ($)
Leases [Abstract]
Operating lease for non-cancellable leases	$ 45,605
Finance Lease, Liability, Payment, Due [Abstract]
2020	527
2021	1,890
2022	1,400
2023	896
2024	541
Thereafter	406
Total minimum payments	5,660
Less: imputed interest	427
Total lease liabilities	5,233
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020	16,785
2021	46,943
2022	53,151
2023	53,705
2024	52,785
Thereafter	268,128
Total minimum payments	491,497
Less: imputed interest	120,489
Total lease liabilities	$ 371,008

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NON-CONTROLLING INTERESTS - Ownership Interest in SSE Holdings (Details) - shares	Sep. 23, 2020	Dec. 25, 2019
Noncontrolling Interest [Line Items]
Number of LLC Interests held by Shake Shack Inc. (in shares)	38,280,102	34,417,302
Number of LLC Interests held by non-controlling interest holders (in shares)	3,112,002	3,145,197
Total LLC Interests outstanding (in shares)	41,392,104	37,562,499
Total LLC Interests outstanding (as a percentage)	100.00%	100.00%
Shake Shack Inc.
Noncontrolling Interest [Line Items]
Number of LLC Interests held by Shake Shack Inc. (as a percentage)	92.50%	91.60%
Non-Controlling Interest Holders
Noncontrolling Interest [Line Items]
Number of LLC Interests held by non-controlling interest holders (as a percentage)	7.50%	8.40%

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NON-CONTROLLING INTERESTS - Narrative (Details) - USD ($)		3 Months Ended		9 Months Ended
	Apr. 21, 2020	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Noncontrolling Interest [Line Items]
Non-controlling interest holders' weighted average ownership percentage		7.50%	14.40%	7.90%	17.90%
ATM Program | Class A Common Stock
Noncontrolling Interest [Line Items]
Sale of stock, maximum offering price	$ 75,000,000
Sale of stock, number of shares issued in transaction (in shares)	233,467
Proceeds from sale of stock	$ 9,794,000
Over-Allotment Option | Class A Common Stock
Noncontrolling Interest [Line Items]
Sale of stock, number of shares issued in transaction (in shares)	3,416,070
Proceeds from sale of stock	$ 135,857,000
Employee Stock Option
Noncontrolling Interest [Line Items]
Units acquired during the period (in shares)		38,564	172,403	180,068	383,117

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NON-CONTROLLING INTERESTS - Changes in Ownership Interests in SSE Holdings (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Noncontrolling Interest [Line Items]
Net income (loss) attributable to Shake Shack Inc.	$ (5,559)	$ 10,344	$ (22,730)	$ 21,920
Other comprehensive income:
Net change related to available-for-sale securities	0	0	1	0
Transfers (to) from non-controlling interests:
Total effect of changes in ownership interest on equity attributable to Shake Shack Inc.	(5,148)	32,985	113,854	50,971
Redemption or Exchange of Units
Transfers (to) from non-controlling interests:
Increase (decrease) in additional paid-in capital	44	1,634	239	7,115
Employee Stock Option
Transfers (to) from non-controlling interests:
Increase (decrease) in additional paid-in capital	367	1,789	627	2,718
Common Stock [Member] | Class A Common Stock
Transfers (to) from non-controlling interests:
Increase (decrease) in additional paid-in capital	0	0	135,718	0
Additional Paid-In Capital | Gramercy Tavern Merger
Transfers (to) from non-controlling interests:
Increase (decrease) in additional paid-in capital	$ 0	$ 19,218	$ 0	$ 19,218

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NON-CONTROLLING INTERESTS NON-CONTROLLING INTERESTS - Redemption of LLC Interests (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Limited Liability Company
Class of Stock [Line Items]
Number of units redeemed (in shares)	5,000	231,599	33,195	1,057,737
Redemptions by NCI Holders | Limited Liability Company
Class of Stock [Line Items]
Number of units redeemed (in shares)	5,000	231,599	33,195	1,057,737
Gramercy Tavern Merger | Limited Liability Company
Class of Stock [Line Items]
Number of units acquired (in shares)	0	2,690,263	0	2,690,263
Common Stock [Member] | Class A Common Stock
Class of Stock [Line Items]
Shares of Class A common stock issued in connection with redemptions of LLC Interests	5,000	231,599	33,195	1,057,737
Common Stock [Member] | Class B Common Stock
Class of Stock [Line Items]
Shares of Class A common stock issued in connection with redemptions of LLC Interests	(5,000)	(231,599)	(33,195)	(1,057,737)
Shares of Class B common stock surrendered and canceled	5,000	231,599	33,195	1,057,737

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EQUITY-BASED COMPENSATION - Schedule of compensation expense recognized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	$ 1,339	$ 1,879	$ 4,058	$ 5,751
Total income tax benefit recognized related to equity-based compensation	60	48	135	141
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	14	637	301	1,974
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	233	720	1,009	2,439
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	1,092	522	2,748	1,338
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	1,199	1,795	3,681	5,521
Labor And Related Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	$ 140	$ 84	$ 377	$ 230

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INCOME TAXES - Reconciliation of Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Income Tax Disclosure [Abstract]
Expected U.S. federal income taxes at statutory rate	$ (1,450)	$ 1,738	$ (6,725)	$ 5,492
Expected U.S. federal income taxes at statutory rate, percentage	21.00%	21.00%	21.00%	21.00%
State and local income taxes, net of federal benefit	$ (492)	$ 505	$ (2,192)	$ 1,746
State and local income taxes, net of federal benefit, percentage	7.10%	6.10%	6.80%	6.70%
Foreign withholding taxes	$ 504	$ 655	$ 712	$ 1,624
Foreign withholding taxes, percentage	(7.30%)	7.90%	(2.20%)	6.20%
Tax credits	$ (701)	$ (2,874)	$ (1,128)	$ (4,697)
Tax credits, percentage	10.10%	(34.70%)	3.50%	(18.00%)
Non-controlling interest	$ (11)	$ (346)	$ 411	$ (1,291)
Non-controlling interest, percentage	0.20%	(4.20%)	(1.30%)	(4.90%)
Tax effect of change in basis related to ASC 842 adoption	$ 0	$ 0	$ 0	$ 1,161
Tax effect of change in basis related to ASC 842 adoption, percent	0.00%	0.00%	0.00%	4.40%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ 1,221	$ (2,587)	$ 1,971	$ (3,847)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	(17.70%)	(31.20%)	(6.20%)	(14.70%)
Other	$ 0	$ (82)	$ 17	$ (82)
Other, percentage	0.00%	(1.00%)	0.00%	(0.30%)
Income tax benefit	$ (797)	$ (3,144)	$ (6,802)	$ (47)
Effective income tax rate reconciliation (in percentage)	11.50%	(38.00%)	21.20%	(0.20%)
Effective Income Tax Rate Reconciliation, Return To Provision Adjustment, Amount	$ 132	$ (153)	$ 132	$ (153)
Effective Income Tax Rate Reconciliation, Return To Provision Adjustment, Percent	(1.90%)	(1.80%)	(0.40%)	(0.60%)
Additional Deferred Tax Asset Recognized, Accelerated Tax Depreciation Deductions			$ 446

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INCOME TAXES - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019	Dec. 25, 2019
Income Tax Contingency [Line Items]
Effective income tax rate reconciliation (in percentage)	11.50%	(38.00%)	21.20%	(0.20%)
Ownership percentage, weighted average	92.50%	85.60%	92.10%	82.10%
Deferred tax asset recognized as a result of investment in partnership			$ 1,562,000
Deferred tax asset related to additional tax basis			116,000
Uncertain tax positions	$ 0		$ 0
Percentage of tax benefits due to equity owners	85.00%		85.00%
Percentage of tax benefits expected to be realized	15.00%		15.00%
Consolidated Entity, Ownership By Parent, LLC Units Acquired			33,195
Establishment of liabilities under tax receivable agreement		$ 20,027,000	$ 414,000	$ 20,027,000
Tax receivable agreement payments to related parties	$ 0	$ 0	6,643,000	$ 707,000
Liabilities under tax receivable agreement	228,197,000		228,197,000		$ 234,426,000
Current portion of liabilities under tax receivable agreement	0		0		$ 7,777,000
Foreign Tax Credit
Income Tax Contingency [Line Items]
Deferred tax assets, valuation allowance	1,221,000		$ 1,221,000
Limited Liability Company
Income Tax Contingency [Line Items]
Units acquired during the period (in shares)			213,263
Deferred tax asset, investment in partnership	$ 175,320,000		$ 175,320,000

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EARNINGS PER SHARE - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Numerator:
Net income (loss)	$ (6,110)	$ 11,423	$ (25,220)	$ 26,201
Less: net income (loss) attributable to non-controlling interests	(551)	1,079	(2,490)	4,281
NET INCOME (LOSS) ATTRIBUTABLE TO SHAKE SHACK INC.	$ (5,559)	$ 10,344	$ (22,730)	$ 21,920
Denominator:
Weighted-average shares of Class A common stock outstanding—basic (in shares)	38,251	31,961	36,668	30,549
Effect of dilutive securities:
Weighted-average shares of Class A common stock outstanding—diluted (in shares)	38,251	32,916	36,668	31,441
Earnings per share of Class A common stock—basic (in dollars per share)	$ (0.15)	$ 0.32	$ (0.62)	$ 0.72
Earnings per share of Class A common stock—diluted (in dollars per share)	$ (0.15)	$ 0.31	$ (0.62)	$ 0.70
Performance stock units
Effect of dilutive securities:
Stock options (in shares)	0	50	0	64
Restricted stock units
Effect of dilutive securities:
Stock options (in shares)	0	81	0	51
Stock options
Effect of dilutive securities:
Stock options (in shares)	0	824	0	777

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EARNINGS PER SHARE - Antidilutive Securities (Details) - Common Stock [Member] - shares	3 Months Ended		9 Months Ended
	Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares (in shares)	764,902	0	764,902	0
Performance stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares (in shares)	139,081	66,101	139,081	66,101
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares (in shares)			262,232	0
Shares of Class B common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares (in shares)	3,112,002	3,809,347	3,112,002	3,809,347

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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019	Dec. 25, 2019	Sep. 30, 2017
Loss Contingencies [Line Items]
Litigation Settlement, Expense		$ 1,200
Loss Contingency Accrual		$ 1,180
Percentage of tax benefits due to equity owners		85.00%
Establishment of liabilities under tax receivable agreement	$ 20,027	$ 414	$ 20,027
Tax receivable agreement liability		228,197		$ 234,426
Retail site
Loss Contingencies [Line Items]
Letters of credit outstanding		$ 130
Office building
Loss Contingencies [Line Items]
Letters of credit outstanding					$ 603
Renewal term		1 year

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RELATED PARTY TRANSACTIONS (Details)	3 Months Ended		9 Months Ended
	Sep. 23, 2020 USD ($)	Sep. 25, 2019 USD ($)	Sep. 23, 2020 USD ($) renewal_option	Sep. 25, 2019 USD ($)	Dec. 25, 2019 USD ($)
Related Party Transaction [Line Items]
Percentage of tax benefits due to equity owners	85.00%		85.00%
Tax receivable agreement payments to related parties	$ 0	$ 0	$ 6,643,000	$ 707,000
Tax receivable agreement liability	228,197,000		228,197,000		$ 234,426,000
Tax distributions payable to non-controlling interest holders	0		0		0
Distributions paid to non-controlling interest holders	164,000	39,000	$ 478,000	1,706,000
Subsidiary to Affiliated Entity
Related Party Transaction [Line Items]
Number of renewal terms | renewal_option			5
Renewal option period			5 years
Share Our Strength
Related Party Transaction [Line Items]
Expenses from transactions with related party	0	30,000	$ 0	30,000
Amount raised through donations	0	190,000	0	190,000
Mobo Systems, Inc. [Member] | Board of Directors Chairman
Related Party Transaction [Line Items]
Expenses from transactions with related party	75,000	44,000	169,000	122,000
Amounts due to related parties, current	0		0		0
Concession Income | Subsidiary to Affiliated Entity
Related Party Transaction [Line Items]
Revenue from related parties	26,000	250,000	60,000	401,000
Due from related parties, current	9,000		9,000		47,000
Rent Expense | Madison Square Park Conservancy
Related Party Transaction [Line Items]
Expenses from transactions with related party	173,000	138,000	392,000	692,000
Amounts due to related parties, current	249,000		249,000		53,000
Mobo Systems, Inc. | Board of Directors Chairman
Related Party Transaction [Line Items]
Expenses from transactions with related party	419,000	$ 487,000	1,208,000	$ 1,195,000
Amounts due to related parties, current	$ 0		$ 0		$ 0

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Label	Element	Value
Adjustments for New Accounting Pronouncement [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 5,195,000
Adjustments for New Accounting Pronouncement [Member] | Noncontrolling Interest [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	1,059,000
Adjustments for New Accounting Pronouncement [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 4,136,000