424B3

Filed Pursuant to Rule 424(b)(3)

Registration No. 333-257731

PROSPECTUS SUPPLEMENT NO. 11

(to Prospectus dated August 6, 2021)

JANUS INTERNATIONAL GROUP, INC.

Up to 114,045,400 Shares of Common Stock

Up to 10,150,000 Warrants

Up to 10,150,000 Shares of Common Stock Underlying Warrants

This prospectus supplement supplements the prospectus dated August 6, 2021 (the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-257731). This prospectus supplement is being filed to update and supplement the information in the Prospectus with the information contained in our current report on Form 8-K, filed with the Securities and Exchange Commission on May 17, 2022 (the “Current Report”). Accordingly, we have attached the Current Report to this prospectus supplement.

The Prospectus and this prospectus supplement relate to resale from time to time of up to 114,045,400 shares of our common stock, par value $0.0001 per share (the “Common Stock”), 10,150,000 warrants to purchase Common Stock of the Company (the “Warrants”) and 10,150,000 shares of Common Stock issuable upon exercise of the Warrants by the selling securityholders named in the Prospectus (each a “Selling Securityholder and collectively, the “Selling Securityholders”). The Common Stock may be offered from time to time up to specified limits by one or more of the Selling Securityholders identified in the Prospectus or in any supplement to the Prospectus. See the sections of the Prospectus entitled “Selling Securityholders” and “Plan of Distribution.”

Our Common Stock is listed on the New York Stock Exchange (“NYSE”) under the symbol “JBI.” On May 13, 2022, the closing sale price of our Common Stock was $9.04. Our Warrants were listed on NYSE under the symbol “JBI WS” until November 11, 2021. On November 11, 2021, the closing sale price of our Warrants was $3.80. As of 5:00 p.m., Eastern Time, on November 12, 2021, all of our outstanding Warrants have been redeemed.

This prospectus supplement updates and supplements the information in the Prospectus and is not complete without, and may not be delivered or utilized except in combination with, the Prospectus, including any amendments or supplements thereto. This prospectus supplement should be read in conjunction with the Prospectus and if there is any inconsistency between the information in the Prospectus and this prospectus supplement, you should rely on the information in this prospectus supplement.

Investing in our Common Stock involves risks that are described in the “Risk Factors” section beginning on page 7 of the Prospectus and under similar headings in any further amendments or supplements to the Prospectus,and in Section 1A. Risk Factors of our Annual Report.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if the Prospectus or this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is May 17, 2022.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

_______________

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): May17, 2022

Janus International Group, Inc.

(Exact Name of Registrant as Specified in Charter)

Delaware	001-40456	86-1476200
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)
	135 Janus International Blvd., Temple, GA 30179 (Address of Principal Executive Offices) (Zip Code)
	(866) 562-2580 (Registrant’s Telephone Number, Including Area Code)
	Not Applicable (Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e 4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.0001 per share	JBI	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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. ☐

Item 2.02. Results of Operations and Financial Condition.

On May 17, 2022, Janus International Group, Inc. (the “Company”), issued a press release announcing financial results for the quarter ended April 2, 2022 (the “Earnings Release”). The full text of the Earnings Release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is available on the investor relations section of the Company’s website at https://ir.janusintl.com/.

This information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 7.01. Regulation FD Disclosure.

On May 17, 2022, the Company provided an investor presentation that will be made available on the investor relations section of the Company’s website at https://ir.janusintl.com/. The investor presentation is furnished as Exhibit 99.2 to this Current Report on Form 8-K.

This information shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01. Financial Statement and Exhibits.

(d) Exhibits.

Exhibit	Description
99.1	Press release issued by Janus International Group, Inc. on May 17, 2022
99.2	Investor Presentation, dated May 17, 2022
104	Cover Page Interactive Data File (formatted as inline XBRL).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: May 17, 2022

JANUS INTERNATIONAL GROUP, INC.

By: /s/ Scott Sannes

Name: Scott Sannes

Title: Chief Financial Officer

EX-99.1

JANUS INTERNATIONAL GROUP REPORTS FIRST QUARTER 2022 FINANCIAL RESULTS

Delivered 50.2% revenue growth, including 35.7% organic improvement

Delivered over 35% increase Adjusted EBITDA

Sequential Adjusted EBITDA margin improvement of over 100 basis points from Q4 2021

Raises full-year 2022 revenue and Adjusted EBITDA guidance

TEMPLE, GA, May 17, 2022 – Janus International Group, Inc. (NYSE: JBI) (“Janus” or the “Company”), a leading provider of cutting-edge access control technologies and building product solutions for the self-storage and other commercial and industrial sectors, today announced financial results for the first quarter ended April 2, 2022.

First Quarter 2022 Highlights

•Revenues of $229.5 million, a 50.2% increase compared to $152.8 million for the first quarter of 2021, driven primarily by strong performance across all sales channels, including Restore, Rebuild & Replace (“R3”) up 56.6%, Commercial and Other up 51.1%, and New Construction up 44.3%, along with a $22.1 million contribution from the 2021 acquisitions of DBCI and ACT.

•Adjusted EBITDA (defined as net income plus the corresponding add-backs shown in the Adjusted EBITDA reconciliation tables below) of $44.7 million, a 37.0% increase compared to $32.6 million for the first quarter of 2021, driven by increased revenue from all sales channels, partially offset by higher cost of sales and general and administrative expenses. Adjusted EBITDA as a percentage of revenues was 19.5%, a decrease of approximately 175 basis points from the prior year period due primarily to higher costs impacting raw material, labor and logistics in advance of commercial actions and productivity initiatives taking full effect, as well as incremental costs associated with being a public company. However, as a result of volume growth, productivity initiatives and commercial actions, Adjusted EBITDA margins increased by more than 100 basis points over the fourth quarter of 2021.

•Net income was $19.7 million, or $0.13 per diluted share, compared to $14.7 million, or $0.22 per diluted share in the first quarter of 2021.

•Adjusted Net Income (defined as Net Income plus the corresponding tax-adjusted add-backs shown in the Adjusted Net Income reconciliation tables below) of $20.1 million, up 22.8% compared to $16.4 million in the first quarter of 2021. Adjusted Net Income per diluted share was $0.14, compared to $0.25 per diluted share in the prior year quarter. The decrease in Adjusted Net Income per diluted share versus the prior year quarter was due to the increase in the weighted average number of outstanding shares as a result of the business combination in June of 2021, partially offset by higher Adjusted Net Income.

•Operating cash flow of $24.8 million compared to $25.6 million in the first quarter of 2021. Free cash flow was $21.9 million compared to $23.2 million in the first quarter of 2021, reflecting continued strong free cash flow conversion of 109% of Adjusted Net Income, despite the continued investments in working capital to support the ongoing growth of the business.

Ramey Jackson, Chief Executive Officer, stated, “Our strong results in the first quarter set the tone for what we expect will be an exciting year for Janus. We generated substantial year-over-year revenue

1

growth from all of our sales channels, led again by particular strength in our R3 and Commercial and Other segments. The actions we took last year to combat inflationary pressures on our business are showing results, as demonstrated by an over 100 basis point sequential improvement in Adjusted EBITDA margin.”

Mr. Jackson continued, “2022 marks our 20th year in business, and I couldn’t be prouder of the team or more excited about the strong fundamentals we see in the self-storage industry today. We have achieved a great deal in the three quarters since becoming a public company, and we look to build on that momentum even as we navigate the macro challenges. Continuing to be proactive in managing inflationary pressures through cost savings initiatives and additional commercial actions is a major part of that success. Given the strong first quarter results, our expectations for the balance of the year, and a focus on driving continued margin improvement, we are pleased to raise our full year 2022 outlook.”

2022 Financial Outlook:

Based on the Company’s current business outlook, Janus is raising its full-year 2022 guidance as follows:

•Revenue in a range of $890 million to $910 million, up from the previous range of $845 million to $865 million. The new range represents a 20.0% increase at the midpoint as compared to 2021 levels.

•Adjusted EBITDA in a range of $193 million to $200 million, up from the previous range of $183 million to $190 million. The new range represents a 32.6% increase at the midpoint as compared to 2021 levels.

About Janus International Group

Janus International Group, Inc. (www.JanusIntl.com) is a leading global manufacturer and supplier of turn-key self-storage, commercial and industrial building solutions, including: roll-up and swing doors, hallway systems, re-locatable storage units and facility and door automation technologies. The Janus team operates out of several U.S. locations and six locations internationally.

Conference Call and Webcast

The Company will host a conference call and webcast to review first quarter results, discuss recent events and conduct a question-and-answer session on Tuesday, May 17, 2022, at 10:00 a.m. Eastern time. The live webcast and archived replay of the conference call can be accessed on the Investors section of the Company’s website at www.janusintl.com. For those unable to access the webcast, the conference call will be accessible domestically or internationally, by dialing 1-877-407-0789 or 1-201-689-8562, respectively. Upon dialing in, please request to join the Janus International Group First Quarter 2022 Earnings Conference Call. To access the replay of the call, dial 1-844-512-2921 (Domestic) and 1- 412-317-6671 (International) with pass code 13729807.

Forward Looking Statements

Certain statements in this communication, including the estimated guidance provided under “2022 Financial Outlook” herein, may be considered “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements other than statements of historical fact included in this communication are forward-looking statements, including, but not limited to statements regarding Janus’s positioning in the industry to strengthen its pipeline and deliver on its objectives and Janus’s belief regarding the demand outlook for Janus’s products and the strength of the industrials markets. When used in this communication, words such as “may,” “should,” “could,” “would,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “continue,” or the negative of such terms or other similar expressions, as they relate to the management team, identify forward-looking statements. Such forward-looking statements are based

2

on the current beliefs of Janus’s management, based on currently available information, as to the outcome and timing of future events, and involve factors, risks, and uncertainties that may cause actual results in future periods to differ materially from such statements.

In addition to factors previously disclosed in Janus’s reports filed with the SEC and those identified elsewhere in this communication, the following factors, among others, could cause actual results to differ materially from forward-looking statements or historical performance: (i) risks of the self-storage industry; (ii) the highly competitive nature of the self-storage industry and Janus’s ability to compete therein; and (iii) the risk that the demand outlook for Janus’s products may not be as strong as anticipated.

There can be no assurance that the events, results, trends or guidance regarding financial outlook identified in these forward-looking statements will occur or be achieved. Forward-looking statements speak only as of the date they are made, and Janus is not under any obligation and expressly disclaims any obligation, to update, alter or otherwise revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by law. This communication is not intended to be all-inclusive or to contain all the information that a person may desire in considering an investment in Janus and is not intended to form the basis of an investment decision in Janus. All subsequent written and oral forward-looking statements concerning Janus or other matters and attributable to Janus or any person acting on its behalf are expressly qualified in their entirety by the cautionary statements above and under the heading “Risk Factors” in Janus’s most recently filed Annual Report on Form 10-K and Quarterly Report on Form 10-Q, as updated from time to time in amendments and its subsequent filings with the SEC.

Non-GAAP Financial Measures

Janus uses measures of performance that are not required by or presented in accordance with GAAP in the United States. Non-GAAP financial performance measures are used to supplement the financial information presented on a GAAP basis. These non-GAAP financial measures should not be considered in isolation or as a substitute for the relevant GAAP measures and should be read in conjunction with information presented on a GAAP basis.

Adjusted EBITDA, Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS are non-GAAP financial measures used by Janus to evaluate its operating performance, generate future operating plans, and make strategic decisions, including those relating to operating expenses and the allocation of internal resources. Accordingly, Janus believes Adjusted EBITDA, Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS provide useful information to investors and others in understanding and evaluating Janus’s operating results in the same manner as its management and board of directors and in comparison with Janus’s peer group companies. In addition, Adjusted EBITDA, Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS provide useful measures for period-to-period comparisons of Janus’s business, as they remove the effect of certain non-recurring events and other non-recurring charges, such as acquisitions, and certain variable or non-recurring charges. Adjusted EBITDA is defined as net income excluding interest expense, income taxes, depreciation expense, amortization, and other non-operational, non-recurring items. Adjusted Net Income is defined as net income plus the corresponding tax-adjusted add-backs shown in the Adjusted EBITDA reconciliation. Adjusted Basic earnings (income) per share (EPS) is computed by taking Adjusted Net Income divided by the weighted average number of shares of common stock outstanding during the period. Adjusted Diluted earnings (income) per share (EPS) is computed by dividing Adjusted Net Income by the weighted average number of common shares outstanding plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Dilutive potential common shares include stock purchase warrants and contingently issuable shares attributable to the earn-out consideration.

Adjusted EBITDA, Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS should not be considered in isolation of, or as an alternative to, measures prepared in accordance with GAAP. There are a number of limitations related to the use of Adjusted EBITDA, Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS rather than net income (loss), which is the nearest GAAP equivalent of Adjusted EBITDA and Adjusted Net Income, or Basic EPS and Diluted EPS, which is the nearest

3

equivalent to Adjusted Basic EPS and Adjusted Diluted EPS. These limitations include that the non-GAAP financial measures: (i) exclude depreciation and amortization, and although these are non-cash expenses, the assets being depreciated may be replaced in the future; (ii) do not reflect interest expense, or the cash requirements necessary to service interest on debt, which reduces cash available; (iii) do not reflect the provision for or benefit from income tax that may result in payments that reduce cash available; (iv) exclude non-recurring items (i.e., the extinguishment of debt); and (v) may not be comparable to similar non-GAAP financial measures used by other companies, because the expenses and other items that Janus excludes in the calculation of these non-GAAP financial measures may differ from the expenses and other items, if any, that other companies may exclude from these non-GAAP financial measures when they report their operating results. Because of these limitations, these non-GAAP financial measures should be considered along with other operating and financial performance measures presented in accordance with GAAP.

4

Janus International Group, Inc.

Consolidated Statements of Operations and Comprehensive Income (Loss)

(In thousands)

	Three Months Ended
	April 2, 2022		March 27, 2021
REVENUE
Sales of product	$	197,306	$	121,696
Sales of services	32,214		31,128
Total revenue	229,520		152,824
Cost of Sales	152,950		99,531
GROSS PROFIT	76,570		53,293
OPERATING EXPENSE
Selling and marketing	13,349		9,458
General and administrative	28,106		19,586
Operating Expenses	41,455		29,044
INCOME FROM OPERATIONS	35,115		24,249
Interest expense	(8,775)		(8,126)
Other expense	(28)		(1,559)
Other Expense, Net	(8,803)		(9,685)
INCOME BEFORE TAXES	26,311		14,564
Provision for Income Taxes	6,607		(155)
NET INCOME	19,704		14,719
Other Comprehensive Income (Loss)	(516)		311
COMPREHENSIVE INCOME	19,188		15,030
Net income attributable to common stockholders	19,704		14,719
Weighted-average shares outstanding, basic and diluted
Basic	146,561,717		66,145,633
Diluted	146,832,889		66,145,633
Net income per share, basic and diluted
Basic	$	0.13	$	0.22
Diluted	$	0.13	$	0.22

5

Janus International Group, Inc.

Consolidated Balance Sheets

(In thousands)

	April 2,			January 1,
	2022			2022
ASSETS
Current Assets
Cash and cash equivalents	$	26,626		$	13,192
Accounts receivable, less allowance for credit losses; $5,733 and $5,449, at April 2, 2022 and January 1, 2022, respectively	118,758			107,372
Costs and estimated earnings in excess of billing on uncompleted contracts	30,286			23,121
Inventory, net	64,226			56,596
Prepaid expenses	12,255			9,843
Other current assets	2,922			4,057
Total current assets	$	255,073		$	214,181
Right-of-use assets, net	41,518			—
Property and equipment, net	42,584			41,607
Customer relationships, net	305,080			312,199
Tradename and trademarks	107,826			107,980
Other intangibles, net	15,495			15,861
Goodwill	369,279			369,286
Deferred tax asset, net	59,998			58,915
Other assets	1,855			1,973
Total assets	$	1,198,708		$	1,122,002
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities
Accounts payable	$	65,336		$	54,961
Billing in excess of costs and estimated earnings on uncompleted contracts	28,053			23,207
Current maturities of long-term debt	8,215			8,067
Other accrued expenses	65,867			54,111
Total current liabilities	$	167,471		$	140,346
Line of credit	—			6,369
Long-term debt, net	703,022			703,718
Deferred tax liability, net	1,804			749
Other long-term liabilities	39,260			2,533
Total liabilities	$	911,557		$	853,715
STOCKHOLDERS’ EQUITY
Common Stock, 825,000,000 shares authorized, $.0001 par value, 146,561,717 and 146,561,717 shares issued and outstanding at April 2, 2022 and January 1, 2022, respectively	15		—	15
Additional paid-in capital	278,399			277,799
Accumulated other comprehensive loss	(1,465)			(949)
Accumulated surplus (deficit)	10,202			(8,578)
Total stockholders’ equity	$	287,151		$	268,287
Total liabilities and stockholders’ equity	$	1,198,708		$	1,122,002

6

Janus International Group, Inc.

Consolidated Statements of Cash Flows
(In thousands)

	Three Months Ended
	April 2, 2022		March 27, 2021
	(Unaudited)		(Unaudited)
Cash Flows Provided By Operating Activities
Net income	$	19,704	$	14,719
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation of property and equipment	1,857		1,473
Reduction in carrying amount of right-of-use assets	1,319		—
Intangible amortization	7,225		6,832
Deferred finance fee amortization	912		754
Share based compensation	600		52
Loss on extinguishment of debt	—		1,421
Loss on sale of assets	—		61
Loss on abandonment of PP&E	103		—
Undistributed earnings of affiliate	(22)		(40)
Deferred income taxes	—		(768)
Changes in operating assets and liabilities
Accounts receivable	(11,752)		837
Costs and estimated earnings in excess of billings and billings in excess of costs and estimated earnings on uncompleted contracts	(7,165)		(920)
Prepaid expenses and other current assets	(1,285)		20
Inventory	(7,630)		(4,942)
Accounts payable	10,375		5,641
Other accrued expenses	9,875		1,869
Other assets and long-term liabilities	661		(1,449)
Net Cash Provided By Operating Activities	$	24,777	$	25,560
Cash Flows Used In Investing Activities
Proceeds from sale of equipment	—		55
Purchases of property and equipment	(2,880)		(2,363)
Cash paid for acquisitions, net of cash acquired	—		(1,565)
Net Cash Used In Investing Activities	$	(2,880)	$	(3,873)
Cash Flows Used In Financing Activities
Net repayments on line of credit	(6,369)		—
Distributions to Janus Midco LLC unitholders	—		(96)
Principal payments on long-term debt	(2,017)		(1,631)
Principal payments under financing lease obligations	(19)		—
Payments for deferred financing fees	—		(765)
Cash Used In Financing Activities	$	(8,405)	$	(2,492)
Effect of exchange rate changes on cash and cash equivalents	(58)		54
Net Increase in Cash and Cash Equivalents	$	13,434	$	19,249
Cash and Cash Equivalents, Beginning of Period	13,192		45,255
Cash and Cash Equivalents, End of Period	$	26,626	64,504
Supplemental Cash Flow Information
Interest paid	$	6,096	$	11,292
Income taxes paid	$	370	$	321
Cash paid for operating leases	$	1,900	$	—
Non-cash investing and financing activities:
Right-of-use assets obtained in exchange for operating lease obligations	$	42,202	$	—
Right-of-use assets obtained in exchange for finance lease obligations	$	633	$	—
Deferred transaction costs related to Juniper merger	$	—	$	8,032

7

Janus International Group, Inc.

Reconciliation of Net Income to Adjusted EBITDA

(In thousands)

	Three Months Ended
	April 2, 2022		March 27, 2021		Variance
					$		%
Net Income	$	19,704	$	14,719	$	4,985	33.9	%
Interest Expense	8,775		8,126		649		8.0	%
Income Taxes	6,607		(155)		6,762		(4362.6)	%
Depreciation of property and equipment	1,857		1,473		384		26.1	%
Amortization	7,225		6,832		393		5.8	%
EBITDA	$	44,168	$	30,995	$	13,173	42.5	%
Loss (gain) on extinguishment of debt(1)	—		1,421		(1,421)		(100.0)	%
COVID-19 related expenses(2)	109		198		(89)		(44.9)	%
Facility relocation(3)	103		—		103		—	%
Acquisition Expense(4)	287		—		287		—	%
Adjusted EBITDA	$	44,667	$	32,614	$	12,053	37.0	%

(1)Adjustment for loss on extinguishment of debt regarding the write off of unamortized fees and third-party fees as a result of the debt modification completed in February 2021.

(2)Expenses which are one-time and non-recurring related to the COVID-19 pandemic.

(3)Expenses related to the facility relocation for ASTA.

(4)Expenses related to the transition services agreement for the DBCI acquisition which closed August 18, 2021.

Janus International Group, Inc.

Reconciliation of Net Income to Non-GAAP Adjusted Net Income

(In thousands)

	Three Months Ended
	April 2, 2022		March 27, 2021
Net Income	$	19,704	$	14,719
Net Income Adjustments(1)	499		1,619
Tax Effect Non-GAAP on Net Income Adjustments(2)	(125)		17
Non-GAAP Adjusted Net Income	$	20,078	$	16,355

(1)Refer to SEC public filings for detailed breakout. This amount reconciles to the EBITDA Adjustments/Non-GAAP Adjustments

(2)Tax effected for the net income adjustments. Used effective tax rates 25.1% and (1.1)% for the three months ended April 2, 2022 and March 27, 2021.

8

Janus International Group, Inc.

Non-GAAP Adjusted EPS

(In thousands)

	Three Months Ended
	April 2, 2022		March 27, 2021
Numerator:
Non-GAAP Adjusted Net Income	$	20,078	$	16,355
Denominator:
Weighted average number of shares:
Basic	146,561,717		66,145,633
Adjustment for Restricted Stock Units	271,172		—
Diluted	146,832,889		66,145,633
Non-GAAP Adjusted Basic EPS	$	0.14	$	0.25
Non-GAAP Adjusted Diluted EPS	$	0.14	$	0.25

Janus International Group, Inc.

Non-GAAP Free Cash Flow Conversion

(In thousands)

	Three Months Ended
	April 2, 2022			March 27, 2021
Cash flow from operating activities	$	24,776		$	25,560
Less capital expenditure	(2,880)			(2,363)
Free cash flow	$	21,896		$	23,197
Non-GAAP Adjusted Net Income	$	20,078		$	16,355
Free cash flow conversion of Non-GAAP Adjusted Net Income	109		%	142		%

9

Investor Contacts, Janus

John Rohlwing

Vice President, Investor Relations & FP&A, Janus International

Rodny Nacier / Dan Scott, ICR on behalf of Janus

IR@janusintl.com

(770) 562-6399

Media Contacts, Janus

Bethany Morehouse

Marketing Content Manager, Janus International

770-746-9576

Marketing@Janusintl.com

Jason Chudoba, ICR on behalf of Janus

Jason.Chudoba@ICRinc.com

Source: Janus International Group, Inc.

10

EX-99.2

FIRST QUARTER 2022 EARNINGS PRESENTATION MAY 17, 2022

2 FORWARD LOOKING STATEMENTS Certain statements in this communication, including the estimated guidance provided under “2022 Outlook” herein, may be considered “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements other than statements of historical fact included in this communication are forward-looking statements, including, but not limited to statements regarding Janus’s belief regarding the demand outlook for Janus’s products and the strength of the industrials markets. When used in this communication, words such as “may,” “should,” “could,” “would,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “continue,” or the negative of such terms or other similar expressions, as they relate to the management team, identify forward-looking statements. Such forward-looking statements are based on the current beliefs of Janus’s management, based on currently available information, as to the outcome and timing of future events, and involve factors, risks, and uncertainties that may cause actual results in future periods to differ materially from such statements. In addition to factors previously disclosed in Janus’s reports filed with the SEC and those identified elsewhere in this communication, the following factors, among others, could cause actual results to differ materially from forward-looking statements or historical performance: (i) risks of the self-storage industry; (ii) the highly competitive nature of the self-storage industry and Janus’s ability to compete therein; (iii) litigation, complaints, and/or adverse publicity; (iv) cyber incidents or directed attacks that could result in information theft, data corruption, operational disruption and/or financial loss; and (v) the risk that the demand outlook for Janus’s products may not be as strong as anticipated. There can be no assurance that the events, results, trends or guidance regarding financial outlook identified in these forward-looking statements will occur or be achieved. Forward-looking statements speak only as of the date they are made, and Janus is not under any obligation and expressly disclaims any obligation, to update, alter or otherwise revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by law. This communication is not intended to be all-inclusive or to contain all the information that a person may desire in considering an investment in Janus and is not intended to form the basis of an investment decision in Janus. All subsequent written and oral forward-looking statements concerning Janus or other matters and attributable to Janus or any person acting on its behalf are expressly qualified in their entirety by the cautionary statements above and under the heading “Risk Factors” in Janus’s most recently filed Annual Report on Form 10-K and Quarterly Report on Form 10-Q, as updated from time to time in amendments and its subsequent filings with the SEC.

3 Non-GAAP Financial Measures In this presentation Janus uses measures of performance that are not required by or presented in accordance with GAAP in the United States. Non-GAAP financial performance measures are used to supplement the financial information presented on a GAAP basis. These non-GAAP financial measures should not be considered in isolation or as a substitute for the relevant GAAP measures and should be read in conjunction with information presented on a GAAP basis. Adjusted EBITDA, and Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS are non-GAAP financial measures used by Janus to evaluate its operating performance, generate future operating plans, and make strategic decisions, including those relating to operating expenses and the allocation of internal resources. Accordingly, Janus believes Adjusted EBITDA, and Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS provide useful information to investors and others in understanding and evaluating Janus’s operating results in the same manner as its management and board of directors and in comparison with Janus’s peer group companies. In addition, Adjusted EBITDA, and Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS provide useful measures for period-to-period comparisons of Janus’s business, as they remove the effect of certain non-recurring events and other non-recurring charges, such as acquisitions, and certain variable or non-recurring charges. Adjusted EBITDA is defined as net income excluding interest expense, income taxes, depreciation expense, amortization, and other non-operational, non-recurring items. Adjusted Net Income is defined as net income plus the corresponding tax-adjusted add-backs shown in the Adjusted EBITDA reconciliation. Adjusted Basic earnings (income) per share (EPS) is computed by taking Adjusted Net Income divided by the weighted average number of shares of common stock outstanding during the period. Adjusted Diluted earnings (income) per share (EPS) is computed by dividing Adjusted Net Income by the weighted average number of common shares outstanding plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Dilutive potential common shares include stock purchase warrants and contingently issuable shares attributable to the earn-out consideration. Adjusted EBITDA, and Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS should not be considered in isolation of, or as an alternative to, measures prepared in accordance with GAAP. There are a number of limitations related to the use of Adjusted EBITDA, and Adjusted Net Income, Adjusted Basic EPS, and Adjusted Diluted EPS rather than net income (loss), which is the nearest GAAP equivalent of Adjusted EBITDA and Adjusted Net Income, or Basic EPS and Diluted EPS, which is the nearest equivalent to Adjusted Basic EPS and Adjusted Diluted EPS. These limitations include that the non-GAAP financial measures: (i) exclude depreciation and amortization, and although these are non-cash expenses, the assets being depreciated may be replaced in the future; (ii) do not reflect interest expense, or the cash requirements necessary to service interest on debt, which reduces cash available; (iii) do not reflect the provision for or benefit from income tax that may result in payments that reduce cash available; (iv) exclude non-recurring items (i.e., the extinguishment of debt); and (v) and may not be comparable to similar non-GAAP financial measures used by other companies, because the expenses and other items that Janus excludes in the calculation of these non-GAAP financial measures may differ from the expenses and other items, if any, that other companies may exclude from these non-GAAP financial measures when they report their operating results. Because of these limitations, these non-GAAP financial measures should be considered along with other operating and financial performance measures presented in accordance with GAAP.

4 AGENDA Business Overview Ramey Jackson Chief Executive Officer Financial Overview & Outlook Scott Sannes Chief Financial Officer

5 Q1 2022 Highlights and Milestones • Well-balanced 50.2% revenue growth, including 35.7% organic growth • R3 up 56.6% • Commercial & Other up 51.1% • New Construction up 44.3% • Integration of DBCI and ACT acquisitions progressing on plan • Robust Adjusted EBITDA growth despite continued inflationary cost pressures • Solid Adjusted EBITDA margin performance, with over 100 basis points in sequential margin improvement from Q4 2021, as cost saving initiatives and commercial actions continue to take hold • Launched revolutionary smart keypad for the self-storage industry with graphic display screen subsequent to quarter end • Continued growth in backlog and pipeline, including Nokē Balanced 1Q 2022 Revenue Mix 35.3% 29.3% 35.4% New Construction Restore, Rebuild & Replace ("R3") Commercial & Other

6 Q1 2022 Results Overview Adj. EBITDA1 $44.7M 37.0% increase 19.5% margin Revenue $229.5M 50.2% increase Adj. Net Income1 $20.1M 22.8% increase OCF $24.8M FCF2 of $21.9M 1. Adjusted EBITDA and Adjusted Net Income are not financial measures determined in accordance with GAAP. For a definition of these metrics and a reconciliation to our most directly comparable financial measure calculated and presented in accordance with GAAP, please see the company’s latest filings with the SEC as well as the following pages. 2. FCF as reconciled in the following pages. Continued Strong Growth and Execution

7 2022 Outlook: Attractive Growth and Adjusted EBITDA Margin Expansion FULL YEAR FY 2022 GUIDANCE Revenue $890 to $910 million 20.0% increase vs. 2021 at midpoint Adjusted EBITDA $193 to $200 million 32.6% increase vs. 2021 at midpoint • Raising Guidance • Outlook reflects Q1 2022 overdrive, strong backlog and pipeline, and commercial and productivity initiatives to offset inflation

8 Summary • Strong first quarter growth driven by balanced strength in all sales channels, bolstered by contributions from the DBCI and ACT acquisitions • Commercial and productivity initiatives helping drive top line growth, offsetting inflation in all cost categories – over 100 bps sequential improvement in Adj. EBITDA margin from Q4 2021 • Integration of DBCI and ACT strategic acquisitions progressing on plan • Raising 2022 Guidance to a new range of $890 to $910 million for Revenue and $193 to $200 million for Adjusted EBITDA • Solid cash generation; Q1 free cash flow conversion of 109% • Quarter end leverage ratio of 4.3x – a decrease of 0.1x since year end 2021, with continued focus on de-levering the business towards goal of 2.5x - 3.5x

9 Adjusted EBITDA Reconciliation

10 Adjusted Net Income Reconciliation

11 Free Cash Flow Conversion