ADTN ADTRAN Holdings Inc

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): May 6, 2024

ADTRAN Holdings, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware	001-41446	87-2164282
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)
901 Explorer Boulevard Huntsville, Alabama		35806-2807
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s Telephone Number, Including Area Code: (256) 963-8000

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 Instructions 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		Name of exchange on which registered
Common Stock, Par Value $0.01		ADTN		The NASDAQ Global Select Market

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. 

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Item 2.02 Results of Operations and Financial Condition.

On May 6, 2024, ADTRAN Holdings, Inc. (“ADTRAN”) announced its financial results for the first quarter ended March 31, 2024.

 

A copy of ADTRAN’s press release announcing its financial results is attached as Exhibit 99.1 hereto and incorporated by reference herein.

 

Item 7.01 Regulation FD Disclosure.

 

Executives from ADTRAN will review the financial results via a live audio webcast on Tuesday, May 7, 2024, at 9:30 a.m. Central Time, or 4:30 p.m. Central European Summer Time. A copy of the investor presentation provided in connection with that review is attached as Exhibit 99.2 and incorporated by reference herein. An archived recording of the webcast will be available for a limited time on the Investor Relations page of investors.adtran.com.

 

The information included in, or furnished with, Item 2.02 and 7.01 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), nor shall it be deemed 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 Statements and Exhibits.

Exhibit Number	Description
99.1	Press Release dated May 6, 2024
99.2	Visual Presentation of May 7, 2024
104	Cover Page Interactive Data File – the cover page iXBRL tags are embedded within the Inline XBRL document

 

 

 

 

 

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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 hereunto duly authorized.

 

Date: May 7, 2024	ADTRAN Holdings, Inc.   By: /s/ Ulrich Dopfer Ulrich Dopfer Chief Financial Officer (Duly Authorized Officer and Principal Financial Officer)

 

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EXHIBIT 99.1

 

 

ADTRAN Holdings, Inc. reports first quarter 2024 financial results

Huntsville, Alabama, USA. — May 06, 2024 — ADTRAN Holdings, Inc. (NASDAQ: ADTN and FSE: QH9) (“ADTRAN Holdings” or the “Company”) today announced its unaudited financial results for the first quarter of 2024.

GAAP gross margin for the first quarter was 31.9%, compared to 34.8% in Q4 2023 and 27.1% in the year-ago quarter, representing an improvement of 484 basis points (“bps”) year-over-year but a decrease of 285 bps quarter-over-quarter. The year-over-year improvement primarily resulted from lower purchasing and transportation costs, as well as lower acquisition-related expenses, amortizations and adjustments. The sequential margin decline is primarily due to $8.8 million of inventory charges related to a strategy shift as part of our Business Efficiency Program.

Non-GAAP gross margin for the first quarter was 41.6% compared to 41.9% in Q4 2023 and 37.3% in the year-ago quarter representing a decline of 33 bps sequentially and an improvement of 429 bps year-over-year.

GAAP operating margin for the first quarter was negative 150.2%, primarily driven by a non-cash goodwill impairment charge .

Non-GAAP operating margin for the first quarter was negative 3.9%, which was within the guidance range of between -7% and 0% of revenues. Non-GAAP operating margin was negatively impacted by an unfavorable currency rate development and seasonal effects in the first quarter.

GAAP net loss attributable to the Company for the first quarter of 2024, including the above mentioned impairment charge, was $324.6 million. Diluted loss per share attributable to the Company for the first quarter was $4.12.

Non-GAAP net loss attributable to the Company for the first quarter of 2024 was $1.7 million. Non-GAAP diluted loss per share attributable to the Company for the first quarter was $0.02.

ADTRAN Holdings’ Chairman and Chief Executive Officer Tom Stanton stated, "First quarter revenue and profitability came in as expected, with the weakness still impacting our results. However, we were pleased with the continued momentum in our customer win rate which was bolstered by the ongoing expansion of our Mosaic One platform. As we continued to execute on our business efficiency program , we were able to reduce inventory and significantly improve our operating cashflow while maintaining our diligence in gaining market share during this pivotal time in our industry. We believe that as markets return to normal, our continued focus on these measures, will lead to sustainable margin expansions and shareholder value creation in the mid-term.”

The Company will hold a conference call to discuss its first quarter results on Tuesday, May 07, 2024, at 9:30 a.m. Central Time, or 4:30 p.m. Central European Summer Time. The Company will webcast this conference call. To listen, simply visit our Investor Relations

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site at investors.adtran.com approximately 10 minutes prior to the start of the call, click on the event “ADTRAN Holdings Releases 1st Quarter 2024 Financial Results and Earnings Call”, and click on the webcast link.

An online replay of the Company’s conference call, as well as the transcript of the Company's conference call, will be available on the Investor Relations site approximately 24 hours following the call and will remain available for at least 12 months. For more information, visit investors.adtran.com or email investor.relations@adtran.com.

Cautionary Note Regarding Forward-Looking Statements

Statements contained in this press release which are not historical facts, such as those relating to expectations regarding future revenues; ADTRAN Holdings’ expected future customer win rate and expansion of its Mosaic One platform; the ability of ADTRAN Holdings’ ability to continue to effectively implement the Business Efficiency Program; the impact of the foregoing measures on margin expansion and shareholder value creation; and ADTRAN Holdings’ strategy and outlook, outlook and financial guidance, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements can also generally be identified by the use of words such as “believe,” “expect,” “intend,” “estimate,” “anticipate,” “will,” “may,” “could” and similar expressions. In addition, ADTRAN Holdings, through its senior management, may from time to time make forward-looking public statements concerning the matters described herein. All such projections and other forward-looking information speak only as of the date hereof, and ADTRAN Holdings undertakes no duty to publicly update or revise such forward-looking information, whether as a result of new information, future events, or otherwise, except to the extent as may be required by law. All such forward-looking statements are necessarily estimates and reflect management’s best judgment based upon current information. Actual events or results may differ materially from those anticipated in these forward-looking statements as a result of a variety of factors. While it is impossible to identify all such factors, factors which have caused and may in the future cause actual events or results to differ materially from those estimated by ADTRAN Holdings include, but are not limited to: (i) risks and uncertainties relating to ADTRAN Holdings’ ability to reduce expenditures and the impact of such reductions on its financial results and financial condition; (ii) the risk of fluctuations in revenue due to lengthy sales and approval processes required by major and other service providers for new products, as well as ongoing tighter inventory management of ADTRAN Holdings’ customers ; (iii) risks and uncertainties relating to the recent restatements of our previously issued consolidated financial statements and ongoing material weaknesses in our internal control over financial reporting; (iv) our ability to comply with the covenants set forth in our credit facility; (v) risks posed by potential breaches of information systems and cyber-attacks; (vi) the risk that ADTRAN Holdings may not be able to effectively compete, including through product improvements and development; and (vii) other risks set forth in ADTRAN Holdings’ public filings made with the Securities and Exchange Commission (“SEC”), including its Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on March 15, 2024, and risks to be disclosed in its Form 10-Q for the quarterly period ended March 31, 2024.

Explanation of Use of Non-GAAP Financial Measures

Set forth in the tables below are reconciliations of gross profit, gross margin, operating expenses, operating loss, other expense, net loss inclusive of the non-controlling interest, net loss attributable to the Company, net income (loss) attributable to the non-controlling interest, and loss per share - basic and diluted, attributable to the Company, in each case as reported based on generally accepted accounting principles in the United States (“GAAP”), to non-GAAP gross profit, non-GAAP gross margin, non-GAAP operating expenses, non-GAAP operating loss, non-GAAP other expense, non-GAAP net loss inclusive of the non-controlling interest, non-GAAP net loss attributable to the Company, non-GAAP net income attributable to the non-controlling interest, non-GAAP loss per share - basic and diluted, attributable to the Company, respectively, and non-GAAP free cash flow. Such non-GAAP measures exclude acquisition related expenses, amortization and adjustments (consisting of intangible amortization of backlog, developed technology, customer relationships, and trade names acquired in connection with business combinations and amortization of inventory fair value adjustments), stock-based compensation expense, amortization of pension actuarial losses, deferred compensation adjustments, integration expenses, restructuring expenses, goodwill impairments, and the tax effect of these adjustments to net income. These measures are used by management in our ongoing planning and annual budgeting processes. Additionally, we believe the presentation of these non-GAAP measures when combined with the presentation of the most directly comparable GAAP financial measure, is beneficial to the overall understanding of ongoing operating performance of the Company.

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These non-GAAP financial measures are not prepared in accordance with, or an alternative for, GAAP and therefore should not be considered in isolation or as a substitution for analysis of our results as reported under GAAP. Additionally, our calculation of non-GAAP measures may not be comparable to similar measures calculated by other companies.

About Adtran

ADTRAN Holdings, Inc. (NASDAQ: ADTN and FSE: QH9) is the parent company of Adtran, Inc., a leading global provider of open, disaggregated networking and communications solutions that enable voice, data, video and internet communications across any network infrastructure. From the cloud edge to the subscriber edge, Adtran empowers communications service providers around the world to manage and scale services that connect people, places and things. Adtran solutions are used by service providers, private enterprises, government organizations and millions of individual users worldwide. ADTRAN Holdings, Inc. is also the largest shareholder of Adtran Networks SE, formerly ADVA Optical Networking SE. Find more at Adtran, LinkedIn and Twitter.

Published by

ADTRAN Holdings, Inc.

www.adtran.com

For media

Gareth Spence

+44 1904 699 358

public.relations@adtran.com

For investors

Steven Williams

+49 89 890 665 918

investor@adtran.com

 

 

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Condensed Consolidated Balance Sheets

(Unaudited)

(In thousands)
 

	March 31,				December 31,
	2024				2023
Assets
Current Assets
Cash and cash equivalents	$	106,757			$	87,167
Accounts receivable, net		187,554				216,445
Other receivables		12,116				17,450
Income tax receivable		8,717				7,933
Inventory, net		322,147				362,295
Prepaid expenses and other current assets		59,667				45,566
Total Current Assets		696,958				736,856
Property, plant and equipment, net		126,969				123,020
Deferred tax assets		25,421				25,787
Goodwill		55,129				353,415
Intangibles, net		306,448				327,985
Other non-current assets		87,729				87,706
Long-term investments		29,252				27,743
Total Assets	$	1,327,906			$	1,682,512
Liabilities, Redeemable Non-Controlling Interest and Equity
Current Liabilities
Accounts payable	$	159,083			$	162,922
Unearned revenue		55,124				46,731
Accrued expenses and other liabilities		36,404				37,607
Accrued wages and benefits		25,869				27,030
Income tax payable, net		6,266				5,221
Total Current Liabilities		282,746				279,511
Non-current revolving credit agreement outstanding		195,000				195,000
Deferred tax liabilities		15,414				35,655
Non-current unearned revenue		22,884				25,109
Non-current pension liability		11,692				12,543
Deferred compensation liability		29,709				29,039
Non-current lease obligations		27,668				31,420
Other non-current liabilities		35,375				28,657
Total Liabilities		620,488				636,934
Redeemable Non-Controlling Interest		441,635				451,756
Equity
Common stock		791				790
Additional paid-in capital		798,897				795,304
Accumulated other comprehensive income		29,656				47,461
Retained deficit		(558,363	)			(243,908	)
Treasury stock		(5,198	)			(5,825	)
Total Equity		265,783				593,822
Total Liabilities, Redeemable Non-Controlling Interest and Equity	$	1,327,906			$	1,682,512

 

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Condensed Consolidated Statements of Loss

(Unaudited)

(In thousands, except per share amounts)
 

		Three Months Ended
		March 31,
		2024				2023
Revenue
Network Solutions		$	181,273			$	282,418
Services & Support			44,900				41,494
Total Revenue			226,173				323,912
Cost of Revenue
Network Solutions			126,326				219,130
Network Solutions - inventory write-down			8,782				—
Services & Support			18,810				16,974
Total Cost of Revenue			153,918				236,104
Gross Profit			72,255				87,808
Selling, general and administrative expenses			59,100				67,397
Research and development expenses			60,251				70,143
Goodwill impairment			292,583				—
Operating Loss			(339,679	)			(49,732	)
Interest and dividend income			397				304
Interest expense			(4,598	)			(3,287	)
Net investment gain			2,253				1,252
Other income (expense), net			1,310				(303	)
Loss Before Income Taxes			(340,317	)			(51,766	)
Income tax benefit			18,647				11,313
Net Loss		$	(321,670	)		$	(40,453	)
Less: Net Income (Loss) attributable to non-controlling interest			2,880				(370	)
Net Loss attributable to ADTRAN Holdings, Inc.		$	(324,550	)		$	(40,083	)
Weighted average shares outstanding – basic			78,814				78,358
Weighted average shares outstanding – diluted			78,814				78,358
Loss per common share attributable to ADTRAN Holdings, Inc. – basic		$	(4.12	)		$	(0.51	)
Loss per common share attributable to ADTRAN Holdings, Inc. – diluted		$	(4.12	)		$	(0.51	)

 

 

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Condensed Consolidated Statements of Cash Flows

(Unaudited)

(In thousands)
 

		Three Months Ended
		March 31,
		2024				2023
Cash flows from operating activities:
Net loss		$	(321,670	)		$	(40,453	)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization			22,528				33,402
Goodwill impairment			292,583				—
Amortization of debt issuance cost			1,013				146
Gain on investments, net			(2,621	)			(3,154	)
Net loss on disposal of property, plant and equipment			150				—
Stock-based compensation expense			3,957				3,812
Deferred income taxes			(19,738	)			(24,019	)
Other, net			545				(1	)
Inventory write down			8,782				—
Inventory reserves			(17,247	)			16,051
Changes in operating assets and liabilities:
Accounts receivable, net			26,002				17,658
Other receivables			5,606				1,980
Income taxes receivable, net			(1,296	)			—
Inventory			49,514				(2,764	)
Prepaid expenses, other current assets and other assets			(15,888	)			1,118
Accounts payable			(4,236	)			(40,367	)
Accrued expenses and other liabilities			7,459				6,349
Income taxes payable, net			1,155				10,316
Net cash provided by (used in) operating activities			36,598				(19,926	)
Cash flows from investing activities:
Purchases of property, plant and equipment			(13,374	)			(8,439	)
Proceeds from sales and maturities of available-for-sale investments			873				930
Purchases of available-for-sale investments			(44	)			(516	)
Proceeds from beneficial interests in securitized accounts receivable			—				1,231
Net cash used in investing activities			(12,545	)			(6,794	)
Cash flows from financing activities:
Tax withholdings related to stock-based compensation settlements			(176	)			(6,258	)
Proceeds from stock option exercises			219				58
Dividend payments			—				(7,076	)
Proceeds from receivables purchase agreement			30,231				—
Repayments on receivables purchase agreement			(32,437	)			—
Proceeds from draw on revolving credit agreements			—				138,236
Repayment of revolving credit agreements			—				(43,464	)
Payment of redemption of redeemable non-controlling interest			(5	)			(1,176	)
Payment of debt issuance cost			(1,994	)			—
Repayment of notes payable			—				(24,692	)
Net cash (used in) provided by financing activities			(4,162	)			55,628
Net increase in cash and cash equivalents			19,891				28,908
Effect of exchange rate changes			(301	)			(1,095	)
Cash and cash equivalents, beginning of period			87,167				108,644
Cash and cash equivalents, end of period		$	106,757			$	136,457
Supplemental disclosure of cash financing activities:
Cash paid for interest		$	5,243			$	1,610
Cash paid for income taxes		$	2,315			$	1,251
Cash used in operating activities related to operating leases		$	2,384			$	4,057
Supplemental disclosure of non-cash investing activities:
Right-of-use assets obtained in exchange for lease obligations		$	842			$	486
Purchases of property, plant and equipment included in accounts payable		$	1,689			$	4,354

 

 

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Supplemental Information

Reconciliation of Gross Profit and Gross Margin to

Non-GAAP Gross Profit and Non-GAAP Gross Margin

(Unaudited)

(In thousands)

 

		Three Months Ended
		March 31,  2024				December 31, 2023				March 31,  2023
Total Revenue		$	226,173			$	225,479			$	323,912
Cost of Revenue		$	153,918			$	147,014			$	236,104
Acquisition-related expenses, amortizations and adjustments(1)			(10,177	)			(10,048	)			(32,578	)
Stock-based compensation expense			(275	)			(440	)			(240	)
Restructuring expenses(2)			(11,247	)			(5,517	)			(76	)
Integration expenses(3)			(35	)			39				—
Non-GAAP Cost of Revenue		$	132,184			$	131,048			$	203,210
Gross Profit		$	72,255			$	78,465			$	87,808
Non-GAAP Gross Profit		$	93,989			$	94,431			$	120,702
Gross Margin			31.9	%			34.8	%			27.1	%
Non-GAAP Gross Margin			41.6	%			41.9	%			37.3	%

 

(1) Includes intangible amortization of backlog, inventory fair value adjustments, developed technology, customer relationships, and trade names acquired in connection with business combinations.

(2) Includes expenses for restructuring program designed to optimize the assets and business processes following the business combination with Adtran Networks SE. These expenses include inventory write down and other charges of $8.8M incurred as a result of a strategic shift in certain product lines in connection with the restructuring program. The restructuring program commenced upon the closing of the business combination with Adtran Networks SE and is expected to be substantially completed in late 2024.

(3) Includes expenses related to the Company's one-time integration bonus program in connection with synergy targets as a result of the business combination with Adtran Networks SE.
 

 

 

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Supplemental Information

Reconciliation of Operating Expenses to Non-GAAP Operating Expenses

(Unaudited)

(In thousands)

 

		Three Months Ended
		March 31,				December 31,				March 31,
		2024				2023				2023
Operating Expenses		$	411,934			$	116,080			$	137,540
Acquisition-related expenses, amortizations and adjustments			(4,881	)	(1)		(4,150	)	(7)		(4,584	)	(11)
Stock-based compensation expense			(3,447	)	(2)		(3,181	)	(8)		(3,458	)	(12)
Restructuring expenses			(5,862	)	(3)		(7,859	)	(9)		(2,361	)	(13)
Integration expenses			(480	)	(4)		(1,928	)	(10)		(849	)	(14)
Deferred compensation adjustments(5)			(1,940	)			(1,324	)			(394	)
Goodwill impairment			(292,583	)	(6)		—				—
Non-GAAP Operating Expenses		$	102,741			$	97,638			$	125,894

 

(1) Includes intangible amortization of developed technology, customer relationships, and trade names acquired in connection with business combinations, of which $4.4 million is included in selling, general and administrative expenses and $0.5 million is included in research and development expenses on the condensed consolidated statements of loss.

(2) $2.5 million is included in selling, general and administrative expenses and $1.0 million is included in research and development expenses on the condensed consolidated statements of loss.

(3) $1.8 million is included in selling, general and administrative expenses and $4.1 million is included in research and development expenses on the condensed consolidated statements of loss.

(4) $0.5 million is included in selling, general and administrative expenses and $0.02 million is included in research and development expenses on the condensed consolidated statements of loss. Includes legal and advisory fees totaling $0.1 million related primarily to the DPLTA proceedings that are recorded in selling, general and administrative expenses. Includes expenses totaling $0.4 million related to the Company's one-time integration bonus program in connection with synergy targets as a result of the business combination with Adtran Networks SE of which $0.4 million are included in selling, general and administrative expenses and $0.02 million are included in research and development expenses. The transformation bonus expense of $0.4 million includes $0.2 million of stock compensation expense.

(5) Includes non-cash change in fair value of equity investments held in the ADTRAN Holdings, Inc. Deferred Compensation Program for Employees, all of which is included in selling, general and administrative expenses on the condensed consolidated statement of loss.

(6) Non-cash impairment of goodwill in our Network Solutions reporting unit, necessitated by factors such as a decrease in the Company’s market capitalization, cautious service provider spending due to economic uncertainty and continued customer inventory adjustments.

(7) Includes intangible amortization of developed technology, customer relationships, and trade names acquired in connection with business combinations, of which $3.7 million is included in selling, general and administrative expenses and $0.5 million is included in research and development expenses on the condensed consolidated statements of loss.

(8) $2.3 million is included in selling, general and administrative expenses and $0.9 million is included in research and development expenses on the condensed consolidated statements of loss.

(9) $4.6 million is included in selling, general and administrative expenses and $3.2 million is included in research and development expenses on the condensed consolidated statements of loss.

(10) $1.9 million is included in selling, general and administrative expenses and $0.02 million is included in research and development expenses on the condensed consolidated statements of loss. Includes legal and advisory fees totaling $1.2 million related to a contemplated capital raise transaction that are recorded in selling, general and administrative expenses. Includes expenses totaling $0.4 million related to the Company's one-time integration bonus program in connection with synergy targets as a result of the business combination with Adtran Networks SE of which $0.4 million are included in selling, general and administrative expenses and $0.02 million are included in research and development expenses. The integration bonus expense of $0.4 million includes $0.2 million of stock compensation expense. Additionally, includes fees relating to the expansion of internal controls at Adtran Networks SE and the implementation of the DPLTA.

(11) Includes intangible amortization of backlog, inventory fair value adjustments, developed technology, customer relationships, and trade names acquired in connection with business combinations, of which $4.1 million is included in selling, general and administrative expenses and $0.5 million is included in research and development expenses on the condensed consolidated statements of loss.

(12) $2.5 million is included in selling, general and administrative expenses and $1.0 million is included in research and development expenses on the condensed consolidated statements of loss.

(13) $2.2 million is included in selling, general and administrative expenses and $0.2 million is included in research and development expenses on the condensed consolidated statements of loss.

(14) $0.8 million is included in selling, general and administrative expenses on the condensed consolidated statements of loss. Includes fees relating to the expansion of internal controls at ADTRAN Networks SE and the implementation of the DPLTA.

 

 

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Supplemental Information

Reconciliation of Operating Loss to Non-GAAP Operating Loss

(Unaudited)

(In thousands)

 

		Three Months Ended
		March 31,				December 31,				March 31,
		2024				2023				2023
Operating Loss		$	(339,679	)		$	(37,615	)		$	(49,732	)
Acquisition related expenses, amortizations and adjustments(1)			15,058				14,198				37,162
Stock-based compensation expense			3,722				3,621				3,698
Restructuring expenses(2)			17,110				13,376				2,437
Integration expenses(3)			514				1,890				849
Deferred compensation adjustments(4)			1,940				1,324				394
Goodwill impairment(5)			292,583				—				—
Non-GAAP Operating Loss		$	(8,752	)		$	(3,206	)		$	(5,192	)

 

(1) Includes intangible amortization of backlog, inventory fair value adjustments, developed technology, customer relationships, and trade names acquired in connection with business combinations.

(2) Includes expenses for restructuring program designed to optimize the assets and business processes following the business combination with Adtran Networks SE. These expenses include inventory write down and other charges of $8.8M incurred as a result of a strategic shift in certain product lines in connection with the restructuring program. The restructuring program commenced upon the closing of the business combination with Adtran Networks SE and is expected to be completed in late 2024.

(3) Includes expenses related to the Company's one-time integration bonus program in connection with synergy targets as a results of the business combination with Adtran Networks SE. Additionally, includes legal and advisory fees relating to a contemplated capital raise transactions as part of the integration. Includes fees incurred for the expansion of internal controls at Adtran Networks SE and the implementation of the DPTLA.

(4) Includes non-cash change in fair value of equity investments held in the ADTRAN Holdings, Inc. Deferred Compensation Program for Employees, all of which is included in selling, general and administrative expenses on the condensed consolidated statement of loss.

(5) Non-cash impairment of goodwill in our Network Solutions reporting unit, necessitated by factors such as a decrease in the Company’s market capitalization, cautious service provider spending due to economic uncertainty and continued customer inventory adjustments.

 

 

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Supplemental Information

Reconciliation of Other Expense to Non-GAAP Other Expense

(Unaudited)

(In thousands)

 

		Three Months Ended
		March 31, 2024				December 31, 2023				March 31, 2023
Interest and dividend income		$	397			$	1,157			$	304
Interest expense			(4,598	)			(4,441	)			(3,287	)
Net investment gain			2,253				1,683				1,252
Other income (expense), net			1,310				(3,448	)			(303	)
Total Other Expense		$	(638	)		$	(5,049	)		$	(2,034	)
Deferred compensation adjustments (1)			(2,439	)			(1,590	)			(1,250	)
Pension expense (2)			7				6				7
Non-GAAP Other Expense		$	(3,070	)		$	(6,633	)		$	(3,277	)

 

(1) Includes non-cash change in fair value of equity investments held in the ADTRAN Holdings, Inc. Deferred Compensation Program for Employees.

(2) Includes amortization of actuarial losses related to the Company's pension plan for employees in certain foreign countries.

 

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Supplemental Information

 

Reconciliation of Net Loss inclusive of Non-Controlling Interest to

Non-GAAP Net Loss inclusive of Non-Controlling Interest

(Unaudited)

 

and

 

Reconciliation of Net Income (Loss) attributable to Non-Controlling Interest to

Non-GAAP Net Income attributable to Non-Controlling Interest

(Unaudited)

 

and

 

Reconciliation of Net Loss attributable to ADTRAN Holdings, Inc. and

Loss per Common Share attributable to ADTRAN Holdings, Inc. – Basic and Diluted to

Non-GAAP Net Loss attributable to ADTRAN Holdings, Inc. and

Non-GAAP Loss per Common Share attributable to ADTRAN Holdings, Inc. – Basic and Diluted

(Unaudited)

(In thousands, except per share amounts)

		Three Months Ended
		March 31, 2024				December 31, 2023				March 31, 2023
Net Loss attributable to ADTRAN Holdings, Inc.		$	(324,550	)		$	(109,945	)		$	(40,083	)
Plus: Net Income (Loss) attributable to non-controlling interest (1)			2,880				2,919				(370	)
Net Loss inclusive of non-controlling interest		$	(321,670	)		$	(107,026	)		$	(40,453	)
Acquisition related expenses, amortizations and adjustments			15,058				14,198				37,162
Stock-based compensation expense			3,722				3,621				3,698
Deferred compensation adjustments (2)			(499	)			(267	)			(856	)
Pension adjustments (3)			7				6				7
Restructuring expenses			17,110				13,376				2,437
Integration expenses			514				1,890				849
Goodwill impairment			292,583				—				—
Tax effect of adjustments to net loss			(5,614	)			(8,735	)			(12,307	)
Non-GAAP Net Loss inclusive of non-controlling interest		$	1,211			$	(82,937	)		$	(9,463	)
Less: Non-GAAP Net Income attributable to non-controlling interest (1)			2,880				2,919				1,159
Non-GAAP Net Loss attributable to ADTRAN Holdings, Inc.		$	(1,669	)		$	(85,856	)		$	(10,622	)
GAAP Net Income (Loss) attributable to non-controlling interest (1)		$	2,880			$	2,919			$	(370	)
Acquisition related expenses, amortizations and adjustments			—				—				1,457
Restructuring expenses			—				—				29
Integration expenses			—				—				6
Stock-based compensation expense			—				—				37
Non-GAAP Net Income attributable to non-controlling interest (1)		$	2,880			$	2,919			$	1,159
Weighted average shares outstanding – basic			78,814				78,530				78,358
Weighted average shares outstanding – diluted			78,814				78,530				78,358
Loss per common share attributable to ADTRAN Holdings, Inc. – basic		$	(4.12	)		$	(1.40	)		$	(0.51	)
Loss per common share attributable to ADTRAN Holdings, Inc. – diluted		$	(4.12	)		$	(1.40	)		$	(0.51	)
Non-GAAP Loss per common share attributable to ADTRAN – basic		$	(0.02	)		$	(1.09	)		$	(0.14	)
Non-GAAP Loss per common share attributable to ADTRAN – diluted		$	(0.02	)		$	(1.09	)		$	(0.14	)

 

(1) Represents the non-controlling interest portion of the Company's ownership of Adtran Networks SE pre-DPLTA and the annual recurring compensation earned by redeemable non-controlling interests and accrued by the Company post-DPLTA.

(2) Includes non-cash change in fair value of equity investments held in deferred compensation plans offered to certain employees.

(3) Includes amortization of actuarial losses related to the Company's pension plan for employees in certain foreign countries.

 

 

---

Supplemental Information

Reconciliation of Net Cash Provided By (Used In) Operating Activities to Free Cash Flow

(Unaudited)

(In thousands)

 

		Three Months Ended
		March 31,				December 31,				March 31,
		2024				2023				2023
Net Cash provided by (used in) operating activities		$	36,598			$	(16,290	)		$	(19,926	)
Purchases of property, plant and equipment			(13,374	)			(9,447	)			(8,439	)
Free cash flow		$	23,224			$	(25,737	)		$	(28,365	)

 

 

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Adtran Holdings Investor presentation May 7, 2024

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Cautionary note regarding forward-looking statements Statements contained in this investor presentation which are not historical facts, such as those relating to expectations regarding operating loss, net loss, expenses and margin; ADTRAN Holdings customer win rate and the ongoing expansion of its Mosaic One Platform; the ability of ADTRAN Holdings’ ability to continue to effectively implement the Business Efficiency Program, as well as its impact on margin expansion and shareholder value creation; the implementation of the Broadband Equity Access and Deployment Program; the shift in customers’ selection of vendors as a result of geopolitical forces; and ADTRAN Holdings’ strategy and outlook, outlook and financial guidance, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements can also generally be identified by the use of words such as “believe,” “expect,” “intend,” “estimate,” “anticipate,” “will,” “may,” “could” and similar expressions. In addition, ADTRAN Holdings, through its senior management, may from time to time make forward-looking public statements concerning the matters described herein. All such projections and other forward-looking information speak only as of the date hereof, and ADTRAN Holdings undertakes no duty to publicly update or revise such forward-looking information, whether as a result of new information, future events, or otherwise, except to the extent as may be required by law. All such forward-looking statements are necessarily estimates and reflect management’s best judgment based upon current information. Actual events or results may differ materially from those anticipated in these forward-looking statements as a result of a variety of factors. While it is impossible to identify all such factors, factors which have caused and may in the future cause actual events or results to differ materially from those estimated by ADTRAN Holdings include, but are not limited to: (i) risks and uncertainties relating to ADTRAN Holdings’ ability to reduce expenditures and the impact of such reductions on its financial results and financial condition; (ii) the risk of fluctuations in revenue due to lengthy sales and approval processes required by major and other service providers for new products, as well as ongoing tighter inventory management of ADTRAN Holdings’ customers; (iii) risks and uncertainties relating to the recent restatements of our previously issued consolidated financial statements and ongoing material weaknesses in our internal control over financial reporting; (iv) our ability to comply with the covenants set forth in our credit facility; (v) the risk posed by potential breaches of information systems and cyber-attacks; (vi) the risk that ADTRAN Holdings may not be able to effectively compete, including through product improvements and development; and (vii) other risks set forth in ADTRAN Holdings’ public filings made with the Securities and Exchange Commission (“SEC”), including its Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on March 15, 2024  and Form 10-Q for the quarterly period ended March 31, 2024 to be filled with the SEC after March 31, 2024.

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Introduction and business model 1

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OUR VISION is to enable a fully-connected world, where the power and freedom to communicate is available to everyone, everywhere, in a secure, efficient and sustainable environment.

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1,000+ Global technology patents 3,300+ Employees worldwide $1.15B FY23 revenue 50 Key differentiators Open, disaggregated platforms with vendor-neutral capability Extensive global design support and supply orchestration capabilities (supply chain) Customers = NSPs, RSPs, ASPs, SMBs, enterprises, tribal communities, governments and agencies: local, state, federal Simplified pricing structure 35+ Years of experience Α — Ω End-to-end solutions portfolio Your trusted partner for the fiber everywhere era “Adtran is focused on customer usability, service and support.” Tom Stanton, CEO, Adtran Worldwide locations HQ = Huntsville, AL

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Global presence Americas: Canada United States (HQ Global) Brazil APAC: Japan China Hong Kong Singapore India Australia EMEA: Germany (HQ Europe) England Switzerland Poland Finland Sweden France Italy Israel South Africa Saudi Arabia

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Business model Adtran is a global vendor with scale and diversity Portfolio differentiation Customer diversity Geographic diversity Strength in focus markets Optical core to customer premise End-to-end automation & insights Enhanced security and assurance More balanced mix of national SPs, regional SPs, enterprise, and ICP customers Continued growth opportunities in each segment Balanced mix of U.S. and non-U.S. business Strong growth opportunities in focus regions Full range of R&D, pre-sales, post-sales and services support in focus regions Strong market share in growth products in focus regions

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Business model Optical core to customer premise Metro WDM 5G Optical platforms Access and Aggregation platforms Subscriber platforms Open multi-gig PON systems, Carrier Ethernet access, Wi-Fi, routers, switches and more Fiber access platforms, 1/10/25/100G Ethernet aggregation, network timing and synchronization Optical access and transport, data center interconnect, advanced pluggable optics, assurance and monitoring, encryption and security AI-driven orchestration, management and optimization DCI

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Business model Market trends Pandemic accelerated digitalization and capacity demand 5G, work from home and streaming drive multi-gigabit fiber access Deglobalization and consolidation impacts vendor selection Open, disaggregated, sustainable and cloud-centric systems Online meetings and e-commerce have displaced travel Symmetric bandwidth goes from being a luxury to a necessity Selection of trusted suppliers becomes strategic Closed and single vendor systems are no longer desirable

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Business model Fiber networking market forecasts CAGR 2023-2028: 3.2% CAGR 2023-2028: 2.4% CAGR 2023-2028: 3.6% Sources: PON OLT+ONT: Dell’Oro 5yr Broadband Access and Home Networking Report (January 2024) Metro WDM: Omdia Optical Network Forecast (November 2023) Carrier Ethernet: Omdia Service Provider Switching and Routing Forecast (October 2023)

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Business model Significant tailwinds expected to drive long term growth BEAD High risk vendor replacement $42.5b in broadband funding to provide service to 7m+ under/unserved homes Expect ~90% to be served with fiber Funds allocated through grant process at state level 4-year implementation timeline for service providers to deliver service Shift away from Chinese vendors is picking up the pace given the geopolitical situation Adtran is one of the key beneficiaries in optical transport and PON in EMEA and already won multiple deals and has several projects in the funnel; we expect to experience the largest impact in 2025 and 2026 given tier 1 integration timelines > $1bn market opportunity in optical networking > $400m market opportunity in broadband access and aggregation

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Business model Corporate social responsibility EcoVadis Adtran, Inc. Adtran Networks SE CDP B- Climate change2023 A- Adtran, Inc. Adtran Networks SE Environmental Sustainability is integral part of product strategy through process-based product ecodesign and lifecycle assessment (LCA) Involvement of supply chain based on Integrity Next supplier onboarding ISO certificated (ISO 14001 EMS, ISO 50001 EnMS) Ratings Social Event sponsoring, volunteer hours at non-profit organizations and donations Dedicated human capital management Employee-driven diversity, equity & inclusion (DE&I) task force to support a diverse and inclusive workforce Strictly following ILO requirements Governance Comprehensive ethics and compliance policy, code of conduct and processes Dedicated human rights policy and supplier of conduct Dedicated engagement in security - ISO 27001-certified 59th percentile 96th percentile Both, EEE sector and global average are C

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Business model Adtran SBTi net zero long-term targets submitted in Q4 2023 Combined scope 1+2: Cars + natural gas + electricity emissions (<3% of total Adtran emissions) Targeting a 90% decrease by 2034 compared to 2016 Actions: Switch to e-mobility, biofuel, district heating where possible Purchase renewable energy Install photo voltaic plus storage Scope 3: Products use and emissions embedded in components (~91% of total Adtran emissions) Targeting a 95% decrease by 2048 compared to 2016 Actions: Focus on producing high energy efficient products– ecodesign process, supported by LCA Decarbonization of supply chain

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Business update 5

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Q1 2024 business update Highlights Q1 2024 Increased Operating Cash Flow by $52.9m QoQ, resulting in $23.2m Free Cash Flow in Q1 Cash up by 22% QoQ Positive Free Cash Flow Working Capital improved, down by $65m (-16%) QoQ Net inventory decreased by $40.2m QoQ Significantly reduced Working Capital A major step of the Business Efficiency plan to further lower operating expenses Announced site closure Revenue at $226.2m (guidance $210m - 240m) Non-GAAP Operating margin of -3.9% (guidance -7% to 0%) Results within guidance range *Free Cash Flow is Operating Cash Flow minus CAPEX

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Q1 2024 business update Technology update Subscriber solutions Launch of latest Wi-Fi 6, 6E and 7 platforms driving growth opportunities Dozens of customer have adopted Intellifi, our SaaS application for cloud-managed Wi-Fi Access and aggregation solutions Continued to scale SDX 6330 deployments across several large service providers in EMEA Secured strategic software award with multi-national operator for packet edge routers Optical networking solutions Launched M-Flex800 platform, an ideal fit for service providers upgrading their transport to 400 or 800 Gig Continued success with securing packet optical wins with traditional Adtran broadband customers Software platforms Added 36 Mosaic One customers this past quarter. We now have 400 customers that have adopted Mosaic One. Professional services Scalable in-region services, including planning, deployment, and maintenance *Source: Dell’Oro

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Q1 2024 business update Well diversified across technology, markets and customer base Categories Optical networking solutions Subscriber solutions Access & aggregation solutions Market Customers Large Regionals Enterprise / ICP / OEM Domestic International

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Q1 2024 business update Revenue by segment, category and region Category Region $41.5 Q1 2023 Q1 2024 $323.9 $226.2 Services & Support Network Solutions Q4 2023 Q1 2024 $225.5 $226.2 Y-o-Y Q-o-Q Q1 2023 Q1 2024 $323.9 $226.2 Access & Aggregation Subscriber Solutions Optical Networking Solutions Q4 2023 Q1 2024 $225.5 $226.2 Q1 2023 Q1 2024 $323.9 $226.2 International Domestic Q4 2023 Q1 2024 $225.5 $226.2 In $m Segments

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Q1 2024 business update Financial Information Q1 2023 Q1 2024 -30% Q1 2023 Q1 2024 37.3% 41.6% +429bps Q1 2023 Q1 2024 -18% Q1 2023 Q1 2024 Q1 2023 Q4 2023 Q4 2023 Q1 2024 0% Q4 2023 Q1 2024 41.9% 41.6% -33bps Q4 2023 Q1 2024 +5% Q4 2023 Q1 2024 Q4 2023 Q1 2024 Revenue ($m) Non-GAAP gross margin Non-GAAP OPEX ($m) Non-GAAP operating margin Non-GAAP diluted EPS ($) Year-over-year Quarter-over-quarter Note: A reconciliation of each non-GAAP financial measure to the most comparable GAAP measure is included in the appendix of this presentation. Non-GAAP operating margin is calculated as non-GAAP operating loss divided by revenue.

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Q1 2024 business update Balance sheet and cash flow highlights ​In $m Q4 23 Q1 24 Trade accounts receivables $216.4 $187.6 Inventories* $362.3 $322.1 Accounts payables $162.9 $159.1 Net working capital $415.8 $350.6 Operating cash flow generated (used) ($16.3) $36.6 Non-GAAP Free cash flow * ($25.7) $23.2 Cash $87.2 $106.8 Q1 23 59 Q2 23 60 Q3 23 67 Q4 23 59 Q1 24 DSO DPO Working capital and cash flow metrics Rolling DSO vs. DPO development Note: A reconciliation of each non-GAAP financial measure to the most comparable GAAP measure is included in the appendix of this presentation.  *Non-GAAP free cash flow is operating cash flow less purchase of property, plant and equipment Days

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GAAP to Non GAAP Reconciliation 6

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Explanation of Use of Non-GAAP Financial Measures Set forth in the tables below are reconciliations of gross profit, gross margin, operating expenses, operating loss, other expense, net loss inclusive of the non-controlling interest, net loss attributable to the Company, net income (loss) attributable to the non-controlling interest, and loss per share - basic and diluted, attributable to the Company, in each case as reported based on generally accepted accounting principles in the United States (“GAAP”), to non-GAAP gross profit, non-GAAP gross margin, non-GAAP operating expenses, non-GAAP operating loss, non-GAAP other expense, non-GAAP net loss inclusive of the non-controlling interest, non-GAAP net loss attributable to the Company, non-GAAP net income attributable to the non-controlling interest, and non-GAAP loss per share - basic and diluted, attributable to the Company, non-GAAP free cash flow respectively. Such non-GAAP measures exclude acquisition related expenses, amortization and adjustments (consisting of intangible amortization of backlog, developed technology, customer relationships, and trade names acquired in connection with business combinations and amortization of inventory fair value adjustments), stock-based compensation expense, amortization of pension actuarial losses, deferred compensation adjustments, integration expenses, restructuring expenses, goodwill impairments, and the tax effect of these adjustments to net income. These measures are used by management in our ongoing planning and annual budgeting processes. Additionally, we believe the presentation of these non-GAAP measures when combined with the presentation of the most directly comparable GAAP financial measure, is beneficial to the overall understanding of ongoing operating performance of the Company. These non-GAAP financial measures are not prepared in accordance with, or an alternative for, GAAP and therefore should not be considered in isolation or as a substitution for analysis of our results as reported under GAAP. Additionally, our calculation of non-GAAP measures may not be comparable to similar measures calculated by other companies.

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Cost of Revenue, gross profit and gross margin reconciliation (1) Includes intangible amortization of backlog, inventory fair value adjustments, developed technology, customer relationships, and trade names acquired in connection with business combinations. (2) Includes expenses for restructuring program designed to optimize the assets and business processes following the business combination with Adtran Networks SE. These expenses include inventory write down and other charges of $8.8M incurrred as a result of a strategic shift in certain product lines in connection with the restructuring program. The restructuring program commenced upon the closing of the business combination with Adtran Networks SE and is expected to be substantially completed in late 2024. (3) Includes expenses related to the Company's one-time integration bonus program in connection with synergy targets as a result of the business combination with Adtran Networks SE.

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Operating expense reconciliation (1) Includes intangible amortization of developed technology, customer relationships, and trade names acquired in connection with business combinations, of which $4.4 million is included in selling, general and administrative expenses and $0.5 million is included in research and development expenses on the condensed consolidated statements of loss. (2) $2.5 million is included in selling, general and administrative expenses and $1.0 million is included in research and development expenses on the condensed consolidated statements of loss. (3) $1.8 million is included in selling, general and administrative expenses and $4.1 million is included in research and development expenses on the condensed consolidated statements of loss. (4) $0.5 million is included in selling, general and administrative expenses and $0.02 million is included in research and development expenses on the condensed consolidated statements of loss. Includes legal and advisory fees totaling $0.1 million related primarily to the DPLTA proceedings that are recorded in selling, general and administrative expenses. Includes expenses totaling $0.4 million related to the Company's one-time integration bonus program in connection with synergy targets as a result of the business combination with Adtran Networks SE of which $0.4 million are included in selling, general and administrative expenses and $0.02 million are included in research and development expenses. The transformation bonus expense of $0.4 million includes $0.2 million of stock compensation expense. (5) Includes non-cash change in fair value of equity investments held in the ADTRAN Holdings, Inc. Deferred Compensation Program for Employees, all of which is included in selling, general and administrative expenses on the condensed consolidated statement of loss. (6) Non-cash impairment of goodwill in our Network Solutions reporting unit, necessitated by factors such as a decrease in the Company’s market capitalization, cautious service provider spending due to economic uncertainty and continued customer inventory adjustments. (7) Includes intangible amortization of developed technology, customer relationships, and trade names acquired in connection with business combinations, of which $3.7 million is included in selling, general and administrative expenses and $0.5 million is included in research and development expenses on the condensed consolidated statements of loss. (8) $2.3 million is included in selling, general and administrative expenses and $0.9 million is included in research and development expenses on the condensed consolidated statements of loss. (9) $4.6 million is included in selling, general and administrative expenses and $3.2 million is included in research and development expenses on the condensed consolidated statements of loss. (10) $1.9 million is included in selling, general and administrative expenses and $0.02 million is included in research and development expenses on the condensed consolidated statements of loss. Includes legal and advisory fees totaling $1.2 million related to a contemplated capital raise transaction that are recorded in selling, general and administrative expenses. Includes expenses totaling $0.4 million related to the Company's one-time integration bonus program in connection with synergy targets as a result of the business combination with Adtran Networks SE of which $0.4 million are included in selling, general and administrative expenses and $0.02 million are included in research and development expenses. The integration bonus expense of $0.4 million includes $0.2 million of stock compensation expense. Additionally, includes fees relating to the expansion of internal controls at Adtran Networks SE and the implementation of the DPLTA. (11) Includes intangible amortization of backlog, inventory fair value adjustments, developed technology, customer relationships, and trade names acquired in connection with business combinations, of which $4.1 million is included in selling, general and administrative expenses and $0.5 million is included in research and development expenses on the condensed consolidated statements of loss. (12) $2.5 million is included in selling, general and administrative expenses and $1.0 million is included in research and development expenses on the condensed consolidated statements of loss. (13) $2.2 million is included in selling, general and administrative expenses and $0.2 million is included in research and development expenses on the condensed consolidated statements of loss. (14) $0.8 million is included in selling, general and administrative expenses on the condensed consolidated statements of loss. Includes fees relating to the expansion of internal controls at ADTRAN Networks SE and the implementation of the DPLTA.

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Operating loss reconciliation (1) Includes intangible amortization of backlog, inventory fair value adjustments, developed technology, customer relationships, and trade names acquired in connection with business combinations. (2) Includes expenses for restructuring program designed to optimize the assets and business processes following the business combination with Adtran Networks SE. These expenses include inventory write down and other charges of $8.8M incurrred as a result of a strategic shift in certain product lines in connection with the restructuring program. The restructuring program commenced upon the closing of the business combination with Adtran Networks SE and is expected to be completed in late 2024. (3) Includes expenses related to the Company's one-time integration bonus program in connection with synergy targets as a results of the business combination with Adtran Networks SE. Additionally, includes legal and advisory fees relating to a contemplated capital raise transactions as part of the integration. Includes fees incurred for the expansion of internal controls at Adtran Networks SE and the implementation of the DPTLA. (4) Includes non-cash change in fair value of equity investments held in the ADTRAN Holdings, Inc. Deferred Compensation Program for Employees, all of which is included in selling, general and administrative expenses on the condensed consolidated statement of loss. (5) Non-cash impairment of goodwill in our Network Solutions reporting unit, necessitated by factors such as a decrease in the Company’s market capitalization, cautious service provider spending due to economic uncertainty and continued customer inventory adjustments.

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Other expense reconciliation (1) Includes non-cash change in fair value of equity investments held in the ADTRAN Holdings, Inc. Deferred Compensation Program for Employees. (2) Includes amortization of actuarial losses related to the Company's pension plan for employees in certain foreign countries.

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Net loss and loss per share reconciliation (1) Represents the non-controlling interest portion of the Company's ownership of Adtran Networks SE pre-DPLTA and the annual recurring compensation earned by redeemable non-controlling interests and accrued by the Company post-DPLTA. (2) Includes non-cash change in fair value of equity investments held in deferred compensation plans offered to certain employees. (3) Includes amortization of actuarial losses related to the Company's pension plan for employees in certain foreign countries.

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Free cash flow reconciliation

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Appendix 6

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2024 Financial calendar

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Adtran stock information 4.7% 5.8% Blackrock Vanguard Egora William Blair Goldman Sachs Other Shareholders YTD stock price development* Shareholder Structure** *Source: Nasdaq ** Release according to Article 40, Section 1 of the WpHG .

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Thank you

v3.24.1.u1

Document And Entity Information	May 06, 2024
Cover [Abstract]
Amendment Flag	false
Entity Central Index Key	0000926282
Document Type	8-K
Document Period End Date	May 06, 2024
Entity Registrant Name	ADTRAN Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity File Number	001-41446
Entity Tax Identification Number	87-2164282
Entity Address, Address Line One	901 Explorer Boulevard
Entity Address, City or Town	Huntsville
Entity Address, State or Province	AL
Entity Address, Postal Zip Code	35806-2807
City Area Code	(256)
Local Phone Number	963-8000
Written Communications	false
Soliciting Material	false
Pre commencement Tender Offer	false
Pre commencement Issuer Tender Offer	false
Security 12b Title	Common Stock, Par Value $0.01
Trading Symbol	ADTN
Security Exchange Name	NASDAQ
Entity Emerging Growth Company	false

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