Stockholder's Equity/Members' Interest

12 Months Ended

Jan. 02, 2021

Schedule of Capitalization, Equity [Line Items]

Stockholder's Equity

Stockholders’ Equity

Our capital stock consists of 1.0 billion shares of $0.01 par value Class A common stock authorized, of which 114,390,595 shares were issued and outstanding as of January 2, 2021. We also have authorized 250 million shares of $0.01 par value Class B common stock, of which 99 shares were issued and outstanding as of January 2, 2021. The Class B common stock entitles holders thereof, who are also holders of LP Units, with a number of votes that is equal to the number of LP Units they hold. The Class B common stock does not participate in dividends and does not have any liquidation rights.

From time to time, limited partners of Summit Holdings exchange their LP Units for shares of Class A common stock of Summit Inc. The following table summarizes the changes in our ownership of Summit Holdings: 

	Summit Inc. Shares (Class A)	LP Units	Total	Summit Inc. Ownership Percentage
Balance — December 29, 2018	111,658,927	3,435,518	115,094,445	97.0	%
Exchanges during period	185,861	(185,861)	—
Stock option exercises	1,065,446	—	1,065,446
Other equity transactions	399,151	—	399,151
Balance — December 28, 2019	113,309,385	3,249,657	116,559,042	97.2	%
Exchanges during period	376,487	(376,487)	—
Stock option exercises	54,517	—	54,517
Other equity transactions	650,206	—	650,206
Balance — January 2, 2021	114,390,595	2,873,170	117,263,765	97.5	%

Accumulated other comprehensive income (loss) - The changes in each component of accumulated other comprehensive income (loss) consisted of the following:

							Accumulated
			Foreign currency				other
	Change in		translation		Cash flow hedge		comprehensive
	retirement plans		adjustments		adjustments		income (loss)
Balance — December 29, 2018	$	3,573	$	(2,147)	$	1,255	$	2,681
Postretirement liability adjustment, net of tax	(1,402)		—		—		(1,402)
Foreign currency translation adjustment, net of tax	—		3,424		—		3,424
Income on cash flow hedges, net of tax	—		—		(1,255)		(1,255)
Balance — December 28, 2019	$	2,171	$	1,277	$	—	$	3,448
Postretirement liability adjustment, net of tax	(1,638)		—		—		(1,638)
Foreign currency translation adjustment, net of tax	—		3,393		—		3,393
Balance — January 2, 2021	$	533	$	4,670	$	—	$	5,203

Summit Materials, LLC

Schedule of Capitalization, Equity [Line Items]

Members' Interest

Members’ Interest

Summit LLC is a wholly owned indirect subsidiary of Summit Holdings, whose primary owner is Summit Inc. Summit Inc. was formed as a Delaware corporation on September 23, 2014. Its sole material asset is a controlling equity interest in Summit Holdings. Pursuant to a reorganization into a holding company structure (the “Reorganization”) in connection with Summit Inc.’s March 2015 initial public offering, Summit Inc. became a holding corporation operating and controlling all of the business and affairs of Summit Holdings and its subsidiaries, including Summit LLC.

Accumulated other comprehensive income (loss) - The changes in each component of accumulated other comprehensive income (loss) consisted of the following:

							Accumulated
			Foreign currency				other
	Change in		translation		Cash flow hedge		comprehensive
	retirement plans		adjustments		adjustments		income (loss)
Balance — December 29, 2018	$	(4,392)	$	(19,370)	$	146	$	(23,616)
Postretirement liability adjustment	(1,925)		—		—		(1,925)
Foreign currency translation adjustment	—		4,716		—		4,716
Income on cash flow hedges	—		—		(146)		(146)
Balance — December 28, 2019	$	(6,317)	$	(14,654)	$	—	$	(20,971)
Postretirement liability adjustment	(2,229)		—		—		(2,229)
Foreign currency translation adjustment	—		4,617		—		4,617
Balance — January 2, 2021	$	(8,546)	$	(10,037)	$	—	$	(18,583)