8-K

A10 Networks, Inc. (ATEN)

8-K 2023-05-04 For: 2023-05-04
View Original
Added on April 04, 2026

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

May 4, 2023

Date of Report (Date of earliest event reported)

____________________________________________________________________________

A10 Logo JPEG.jpg

A10 NETWORKS, INC.

(Exact name of the registrant as specified in its charter)

____________________________________________________________________________

Delaware 001-36343 20-1446869
(State or Other Jurisdiction of Incorporation or Organization) (Commission File Number) (I.R.S. Employer Identification Number)

2300 Orchard Parkway

San Jose, CA 95131

(Address of principal executive offices, including zip code)

(408) 325-8668

(Name and telephone number, including area code, of the person to contact in connection with this report)

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, $0.00001 par value per share ATEN 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 4, 2023, A10 Networks, Inc. (the “Company”) issued a press release regarding financial results for the quarter ended March 31, 2023. A copy of the press release is furnished herewith as Exhibit 99.1.

Item 7.01    Regulation FD Disclosure

On May 4, 2023, the Company posted on its website (www.a10networks.com) slides regarding the financial results for the quarter ended March 31, 2023. A copy of the slides is attached as Exhibit 99.2 and the information in Exhibit 99.2 is incorporated herein by reference.

The information in Item 2.02, Item 7.01 and Item 9.01 in this Current Report on Form 8-K and the exhibits attached hereto shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended. The information in Item 2.02 shall not be incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 8.01    Other Events.

On May 4, 2023, the Company announced that its Board of Directors (the “Board”) declared a quarterly dividend. The quarterly dividend, in the amount of $0.06 per share, will be payable, subject to any prior revocation, on June 1, 2023 to stockholders of record on May 15, 2023. Future dividends will be subject to further review and approval by the Board in accordance with applicable law. The Board reserves the right to adjust or withdraw the quarterly dividend in future periods as it reviews A10’s capital allocation strategy from time-to-time.

Forward Looking Statements

Item 8.01 contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Exchange Act, including statements regarding the Company’s dividend program. These forward-looking statements involve risks and uncertainties. These forward-looking statements may be identified by terms such as “will,” “may,” “plans,” or the negative of these terms, and similar expressions intended to identify forward-looking statements. These forward-looking statements include, but are not limited to, statements regarding the anticipated amount, duration, methods, timing and other aspects of our dividend program and any anticipated benefits or value resulting from any such dividends. These statements involve known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements to differ materially from those expressed or implied by such forward-looking statements. These risks and uncertainties include, but are not limited to, any unforeseen need for capital which may require us to divert funds we may have otherwise used for the dividend program, which may in turn negatively impact our ability to administer the quarterly dividends. In addition, the timing and amount of future dividends, if any, will be made as management deems appropriate and will depend on a variety of factors including stock price, market conditions, corporate and regulatory requirements (including applicable securities laws and regulations and the rules of The New York Stock Exchange), any additional constraints related to material inside information the Company may possess, and capital availability. More information regarding these and other risks, uncertainties and factors is contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022, as filed with the SEC, and in other reports filed by the Company with the SEC from time to time. You are cautioned not to unduly rely on these forward-looking statements, which speak only as of the date of this press release. All information in this press release and its attachments is as of the date stated and unless required by law, The Company undertakes no obligation to publicly revise any forward-looking statement to reflect circumstances or events after the date of this press release or to report the occurrence of unanticipated events other than as required by law or regulation.

Item 9.01    Financial Statements and Exhibits

(d) Exhibits

Exhibit Description
99.1 Press release datedMay4, 2023.
99.2 Slides of A10 Network, Inc. datedMay4, 2023, regarding financial results of the firstquarter endedMarch31, 2023.

SIGNATURE

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 4, 2023

A10 NETWORKS, INC.
By: /s/ Brian Becker
Brian Becker
Chief Financial Officer (Principal Accounting and Financial Officer)

Document

EXHIBIT 99.1

a10logo.jpg

A10 Networks Reports Revenue of $57.7 Million,

Continued Strong Profitability for First Quarter of 2023

Management demonstrates durable and sustainable business model

despite macro headwinds

SAN JOSE, Calif., May 4, 2023 -- A10 Networks (NYSE: ATEN), a leading provider of cybersecurity and infrastructure solutions, today announced financial results for its first quarter ended March 31, 2023.

First Quarter 2023 Financial Summary

• Revenue of $57.7 million, declined 7.9% year-over-year due to the impact of macro headwinds and project delays.

• GAAP gross margin of 82.3%; non-GAAP gross margin of 83.1% as a result of better product mix and continued successful navigation of short-term input cost pressures.

• GAAP net income of $4.0 million, or $0.05 per diluted share, compared with GAAP net income of $6.3 million, or $0.08 per diluted share in the first quarter of 2022.

• Non-GAAP net income of $9.9 million, or $0.13 per diluted share (non-GAAP EPS), compared with non-GAAP net income of $10.0 million, or $0.13 per diluted share in the first quarter of 2022.

• Adjusted EBITDA of $15.5 million, representing 26.8% of revenue, in line with stated business model goals and compared to adjusted EBITDA as a percent of revenue of 21.6% in the first quarter last year.

• The Board of Directors approved a quarterly cash dividend of $0.06 per share, payable on June 1, 2023 to stockholders of record at the close of business on May 15, 2023.

A reconciliation between GAAP and non-GAAP information is contained in the financial statements below.

“We delivered profitability that was in-line with our trended financials and revenue towards the high-end of our pre-announced results,” said Dhrupad Trivedi, President and Chief Executive Officer of A10 Networks. “We have taken proactive actions to flex our cost structure to address the headwinds we experienced at the start of the year and to better enable us to achieve our full-year earnings guidance without compromising long-term growth. Demand for our security-led solutions remains robust, but project delays from tier-one North American customers impacted our ability to deliver upon our originally targeted revenue level. Our value proposition remains intact, and orders have been delayed, but not lost to competitors. As a result, and as expected, our first quarter represents what we believe will be the low-point for the year, and we continue to believe we can achieve revenue growth that outpaces the market, and importantly, double-digit growth in 2023 full-year non-GAAP EPS.”

“A10’s strategic diversification, in terms of customer base, geographic presence and product revenue, help offset the macro-economic pockets of weakness,” continued Trivedi. “This quarter demonstrates that we are not immune from recessionary impacts, but we remain confident we can perform better than others in our peer set. Additionally, we grew our recurring revenue, which increased 10% in the first quarter, giving us greater visibility and mitigating the impact of longer sales cycles. With $145 million in cash, no debt, increasing recurring revenue and systemic diversification, we are well-positioned for continued success.”

Conference Call

Management will host a call at 1:30 p.m. Pacific time (4:30 p.m. Eastern time) today, May 4, 2023, to discuss these results. Interested parties may access the conference call by dialing (833) 470-1428 (toll-free) or (404) 975-4839 and referencing access code: 820278.

A live audio webcast of the conference call will be accessible from the “Investor Relations” section of A10 Network’s website at investors.a10networks.com. The webcast will be archived for at least 90 days. A telephonic replay of the conference call will be available two hours after the conclusion of the live call and will run for seven days and may be accessed by dialing (866) 813-9403 (toll-free) or (929) 458-6194 and entering the passcode 360894.

Forward-Looking Statements

This press release contains “forward-looking statements,” including statements regarding our anticipated future financial results, quarterly dividend payments, strategy, demand, supply chain and order pattern challenges, positioning, growth and revenue and non-GAAP EPS expectations. Forward-looking statements are subject to known and unknown risks and uncertainties and are based on assumptions that may prove to be incorrect, which could cause actual results to differ materially from those expected or implied by the forward-looking statements. Factors that may cause actual results to differ include the impact of the COVID-19 pandemic on our business and the business of our customers; a significant decline in global macroeconomic or political conditions that have an adverse impact on our business and financial results; business interruptions related to our supply chain; our ability to manage our business and expenses if customers cancel or delay orders; execution risks related to closing key deals and improving our execution; the continued market adoption of our products; our ability to successfully anticipate market needs and opportunities; our timely development of new products and features; our ability to achieve or maintain profitability; any loss or delay of expected purchases by our largest end-customers; our ability to maintain or improve our competitive position; competitive and execution risks related to cloud-based computing trends; our ability to attract and retain new end-customers and our largest end-consumers; our ability to maintain and enhance our brand and reputation; changes demanded by our customers in the deployment and payment model for our products; continued growth in markets relating to network security; the success of any future acquisitions or investments in complementary companies, products, services or technologies; the ability of our sales team to execute well; our ability to shorten our close cycles; the ability of our channel partners to sell our products; variations in product mix or geographic locations of our sales; risks associated with our presence in international markets; weaknesses or deficiencies in our internal control over financial reporting; our ability to timely file periodic reports required to be filed under the Securities Exchange Act of 1934; and other risks that are described in “Risk Factors” in our periodic filings with the Securities and Exchange Commission, including our Form 10-K filed with the Securities and Exchange Commission on February 27, 2023. We do not intend to update or alter our forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law.

Non-GAAP Financial Measures

In addition to disclosing financial measures prepared in accordance with U.S. generally accepted accounting principles (GAAP), we refer to certain non-GAAP financial measures, including non-GAAP net income, non-GAAP net income per basic and diluted share (or non-GAAP EPS), non-GAAP gross profit and gross margin, non-GAAP operating income and operating margin, non-GAAP operating expenses, and Adjusted EBITDA. Non-GAAP financial measures do not have any standardized meaning and are therefore unlikely to be comparable to similarly titled measures presented by other companies.

A10 Networks considers these non-GAAP financial measures to be important because they provide useful measures of the operating performance of the company, exclusive of unusual events or factors that do not directly affect what we consider to be our core operating performance and are used by the company's management for that purpose.

Non-GAAP financial measures should not be considered in isolation from, or as a substitute for, financial information prepared in accordance with GAAP.

We define non-GAAP net income as our GAAP net income excluding: (i) stock-based compensation and related payroll tax, (ii) cyber incident remediation expense, (iii) restructuring expense and (iv) income tax effect of excluding non-GAAP items (i) to (iii) listed above. We define non-GAAP net income per basic and diluted share as our non-GAAP net income divided by our basic and diluted weighted-average shares outstanding. We define non-GAAP gross profit as our GAAP gross profit excluding (i) stock-based compensation and related payroll tax, (ii) cyber incident remediation expense and (iii) restructuring expense. We define non-GAAP gross margin as our non-GAAP gross profit divided by our GAAP revenue. We define non-GAAP operating income as our GAAP income from operations excluding (i) stock-based compensation and related payroll tax, (ii) cyber incident remediation expense and (iii) restructuring expense. We define non-GAAP operating margin as our non-GAAP operating income divided by our GAAP revenue. We define non-GAAP operating expenses as our GAAP operating expenses excluding (i) stock-based compensation and related payroll tax, (ii) cyber incident remediation expense and (iii) restructuring expense. We define Adjusted EBITDA as our GAAP net income excluding (i) interest and other (income) expense, net, (ii) depreciation and amortization expense, (iii) provision for income taxes, (iv) stock-based compensation and related payroll tax, (v) cyber incident remediation expense and (vi) restructuring expense.

Non-GAAP financial measures are presented for supplemental informational purposes only for understanding the company's operating results.

About A10 Networks

A10 Networks (NYSE: ATEN) provides secure application services and solutions for on-premises, multi-cloud and edge-cloud environments at hyperscale. Our mission is to enable service providers and enterprises to deliver business-critical applications that are secure, available and efficient for multi-cloud transformation and 5G readiness. We deliver better business outcomes that support investment protection, new business models and help future-proof infrastructures, empowering our customers to provide the most secure and available digital experience. Founded in 2004, A10 Networks is based in San Jose, Calif. and serves customers globally. For more information, visit https://www.a10networks.com/ and follow us @A10Networks.

The A10 logo and A10 Networks are trademarks or registered trademarks of A10 Networks, Inc. in the United States and other countries. All other trademarks are the property of their respective owners.

Investor Contact:

Rob Fink / Tom Baumann

FNK IR

646.809.4048 / 646.349.6641

aten@fnkir.com

Brian Becker

Chief Financial Officer

investors@a10networks.com

Source: A10 Networks, Inc.

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited, in thousands, except per share amounts, on a GAAP Basis)

Three Months Ended March 31,
2023 2022
Revenue:
Products $ 31,182 $ 37,045
Services 26,509 25,627
Total revenue 57,691 62,672
Cost of revenue:
Products 6,083 8,633
Services 4,133 4,206
Total cost of revenue 10,216 12,839
Gross profit 47,475 49,833
Operating expenses:
Sales and marketing 22,334 22,782
Research and development 11,665 12,887
General and administrative 7,309 6,162
Total operating expenses 41,308 41,831
Income from operations 6,167 8,002
Non-operating income (expense), net:
Interest income 973 119
Other income (expense), net (2,218) (632)
Non-operating income (expense), net (1,245) (513)
Income before provision for income taxes 4,922 7,489
Provision for income taxes 964 1,140
Net income $ 3,958 $ 6,349
Net income per share:
Basic $ 0.05 $ 0.08
Diluted $ 0.05 $ 0.08
Weighted-average shares used in computing net income per share:
Basic 74,001 76,795
Diluted 75,541 79,285

A10 NETWORKS, INC.

RECONCILIATION OF GAAP NET INCOME TO NON-GAAP NET INCOME

(unaudited, in thousands, except per share amounts)

Three Months Ended March 31,
2023 2022
GAAP net income
Non-GAAP items:
Stock-based compensation and related payroll tax 3,970 3,681
Restructuring expense 1,861
Cyber incident remediation expense 1,353
Adoption of tax-effecting non-GAAP items (1) (1,215)
Total non-GAAP items 5,969 3,681
Non-GAAP net income (1)(2) 9,927 10,030
GAAP net income per share:
Basic
Diluted
Non-GAAP items:
Stock-based compensation and related payroll tax 0.05 0.05
Restructuring expense 0.03
Cyber incident remediation expense 0.02
Adoption of tax-effecting non-GAAP items (1) (0.02)
Total non-GAAP items 0.08 0.05
Non-GAAP net income per share: (1)(2)
Basic
Diluted
Weighted average shares used in computing net income per share:
Basic 74,001 76,795
Diluted 75,541 79,285

All values are in US Dollars.

(1)For the three months ended March 31, 2023, we adopted presenting non-GAAP net income impacted for the income tax effect of excluding non-GAAP items. The income tax effect of $1,215 thousand represents a non-GAAP profit before tax rate of 18.0%. For the three months ended March 31, 2022, the income tax effect of excluding non-GAAP items would be $1,636 thousand and non-GAAP net income adjusted for the income tax effect of excluding non-GAAP items would be $8,394 thousand, representing a $0.02 decrease in reported non-GAAP net income per share in the table above. The tax effect of $1,636 thousand represents a non-GAAP profit before tax rate of 24.9%.

(2)Net income and earnings per share excluding adjustments are non-GAAP financial measures presented as supplemental financial measures to enable a user of the financial information to understand the impact of these adjustments on reported results. These financial measures should not be considered an alternative to net income, operating income, cash flows provided by operating activities, or any other measure of financial performance or liquidity presented in accordance with U.S. GAAP. Our adjusted net income and earnings per share may not be comparable to similarly titled measures of another company because companies may not all calculate adjusted net income and earnings per share in the same manner.

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(unaudited, in thousands, except par value, on a GAAP Basis)

March 31,<br>2023 December 31,<br>2022
ASSETS
Current assets:
Cash and cash equivalents $ 68,519 $ 67,971
Marketable securities 76,022 83,018
Accounts receivable, net of allowances of $78 and $32, respectively 67,007 72,928
Inventory 20,391 19,693
Prepaid expenses and other current assets 13,054 13,381
Total current assets 244,993 256,991
Property and equipment, net 22,305 19,743
Goodwill 1,307 1,307
Deferred tax assets, net 62,116 63,183
Other non-current assets 26,564 27,881
Total assets $ 357,285 $ 369,105
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable $ 5,906 $ 6,725
Accrued liabilities 21,410 37,183
Deferred revenue 75,729 74,340
Total current liabilities 103,045 118,248
Deferred revenue, non-current 52,769 52,652
Other non-current liabilities 15,970 17,193
Total liabilities 171,784 188,093
Stockholders' equity:
Common stock, $0.00001 par value: 500,000 shares authorized; 87,581 and 87,123 shares issued and 74,197 and 73,738 shares outstanding, respectively 1 1
Treasury stock, at cost: 13,384 and 13,384 shares, respectively (134,934) (134,934)
Additional paid-in-capital 471,341 466,927
Dividends paid (24,248) (19,802)
Accumulated other comprehensive income (163) (726)
Accumulated deficit (126,496) (130,454)
Total stockholders' equity 185,501 181,012
Total liabilities and stockholders' equity $ 357,285 $ 369,105

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands, on a GAAP Basis)

Three Months Ended March 31,
2023 2022
Cash flows from operating activities:
Net income $ 3,958 $ 6,349
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization 2,106 1,844
Stock-based compensation 3,742 3,452
Other non-cash items (169) 287
Changes in operating assets and liabilities:
Accounts receivable 5,687 12,535
Inventory (1,522) 1,433
Prepaid expenses and other assets 1,519 (1,568)
Accounts payable (676) (1,857)
Accrued liabilities (16,997) (6,287)
Deferred revenue 1,506 (280)
Net cash provided by (used in) operating activities (846) 15,908
Cash flows from investing activities:
Proceeds from sales of marketable securities 4,550
Proceeds from maturities of marketable securities 29,263 17,173
Purchases of marketable securities (21,221) (13,635)
Purchases of property and equipment (2,675) (3,137)
Net cash provided by investing activities 5,367 4,951
Cash flows from financing activities:
Proceeds from issuance of common stock under employee equity incentive plans 473 165
Repurchase of common stock (28,322)
Payments for dividends (4,446) (3,869)
Net cash used in financing activities (3,973) (32,026)
Net increase (decrease) in cash and cash equivalents 548 (11,167)
Cash and cash equivalents—beginning of period 67,971 78,925
Cash and cash equivalents—end of period $ 68,519 $ 67,758
Non-cash investing and financing activities:
Transfers between inventory and property and equipment $ 824 $ 196
Purchases of property and equipment included in accounts payable $ 142 $ 1

A10 NETWORKS, INC.

RECONCILIATION OF GAAP GROSS PROFIT TO NON-GAAP GROSS PROFIT

(unaudited, in thousands, except percentages)

Three Months Ended March 31,
2023 2022
GAAP gross profit $ 47,475 $ 49,833
GAAP gross margin 82.3 % 79.5 %
Non-GAAP adjustments:
Stock-based compensation and related payroll tax 444 428
Restructuring expense 42
Cyber incident remediation expense 3
Non-GAAP gross profit $ 47,964 $ 50,261
Non-GAAP gross margin 83.1 % 80.2 %

A10 NETWORKS, INC.

RECONCILIATION OF GAAP TOTAL OPERATING EXPENSES

TO NON-GAAP TOTAL OPERATING EXPENSES

(unaudited, in thousands)

Three Months Ended March 31,
2023 2022
GAAP total operating expenses $ 41,308 $ 41,831
Non-GAAP adjustments:
Stock-based compensation and related payroll tax (3,526) (3,253)
Restructuring expense (1,819)
Cyber incident remediation expense (1,350)
Non-GAAP total operating expenses $ 34,613 $ 38,578

A10 NETWORKS, INC.

RECONCILIATION OF GAAP INCOME FROM OPERATIONS

TO NON-GAAP OPERATING INCOME

(unaudited, in thousands, except percentages)

Three Months Ended March 31,
2023 2022
GAAP income from operations $ 6,167 $ 8,002
GAAP operating margin 10.7 % 12.8 %
Non-GAAP adjustments:
Stock-based compensation and related payroll tax 3,970 3,681
Restructuring expense 1,861
Cyber incident remediation expense 1,353
Non-GAAP operating income $ 13,351 $ 11,683
Non-GAAP operating margin 23.1 % 18.6 %

A10 NETWORKS, INC.

RECONCILIATION OF GAAP NET INCOME TO

EBITDA AND ADJUSTED EBITDA (NON-GAAP)

(unaudited, in thousands)

Three Months Ended March 31,
2023 2022
GAAP net income $ 3,958 $ 6,349
GAAP net income margin 6.9 % 10.1 %
Exclude: Interest and other (income) expense, net 1,245 513
Exclude: Depreciation and amortization 2,106 1,844
Exclude: Provision for income taxes 964 1,140
EBITDA 8,273 9,846
Exclude: Stock-based compensation and related payroll tax 3,970 3,681
Exclude: Restructuring expense 1,861
Exclude: Cyber incident remediation expense 1,353
Adjusted EBITDA $ 15,457 $ 13,527
Adjusted EBITDA margin 26.8 % 21.6 %

atenq12023earningscallsl

Q1 2023 Financial Results & Commentary May 4, 2023


Cautionary Statements & Disclosures This presentation and the accompanying oral presentation contain “forward-looking” statements that are based on our management’s beliefs and assumptions, including statements regarding our future financial performance, strategy, routes to market, technical differentiation, positioning, capital allocation strategy, expansion opportunities, growth, profitability, market growth, as well as market and technology trends. Forward-looking statements are subject to known and unknown risks, uncertainties, assumptions and other factors that could cause our actual results to differ materially from those anticipated or implied by our forward-looking statements. These factors include, but are not limited to, the impact of the COVID-19 pandemic on our business, on the business of our customers and suppliers, and on the global economy in general, a significant decline in global macroeconomic or political conditions, execution risks related to closing key deals and improving our execution, successfully executing our strategies, market adoption of our products, successfully anticipating market needs and opportunities, timely development of new products and features, achieving or maintaining profitability, loss or delay of expected purchases, our ability to maintain or improve our competitive position; competitive and execution risks related to cloud-based computing trends, attracting and retaining new end-customers, maintaining and enhancing our brand and reputation, changes demanded by our customers in the deployment and payment model for our products, growth in markets relating to network security, the success of any future acquisitions or investments, the success of our partnerships with technology providers, the ability of our sales team to execute well, our ability to shorten our close cycle, the ability of our channel partners to sell our products, variations in product mix or geographic locations of our sales, our presence in international markets, and other factors described in our quarterly reports on Form 10-Q, annual reports on Form 10-K and other filings made with the Securities and Exchange Commission, to which your attention is directed. The forward-looking statements included in this presentation are based on current expectations and beliefs as of May 4, 2023, only. We do not intend to update this information contained in the forward-looking statements, except as required by law. This presentation and the accompanying oral presentation also include certain non-GAAP financial measures including Non-GAAP gross margin, non-GAAP operating income, non-GAAP net income, non-GAAP operating margin, Adjusted EBITDA and Non-GAAP EPS. Non-GAAP financial measures do not have any standardized meaning and are therefore unlikely to be comparable to similarly titles measures presented by other companies. A10 Networks considers these non-GAAP financial measures to be important because they provide useful measures of the operating performance of the company, exclusive of unusual events or factors that do not directly affect what we consider to be our core operating performance, and are used by the company’s management for that purpose. Non-GAAP financial measures should not be considered in isolation from, or as a substitute for, financial information prepared in accordance with GAAP. We define non-GAAP net income as our GAAP net income (loss) excluding: (i) stock- based compensation and related payroll tax, (ii) amortization expense related to acquisition, (iii) global distribution center transition expense. We define non-GAAP net income per basic and diluted share as our non-GAAP net income (loss) divided by our basic and diluted weighted-average shares outstanding. We define non-GAAP gross profit as our GAAP gross profit excluding (i) stock-based compensation and related payroll tax, and (ii) global distribution center transition expense. We define non-GAAP gross margin as our non-GAAP gross profit divided by our GAAP revenue. We define non-GAAP operating income (loss) as our GAAP income (loss) from operations excluding (i) stock-based compensation and related payroll tax, (ii) amortization expense related to acquisition, and (iii) global distribution center transition expense. We define non-GAAP operating margin as our non-GAAP operating income (loss) divided by our GAAP revenue. We define non-GAAP operating expenses as our GAAP operating expenses excluding (i) stock-based compensation and related payroll tax, (ii) amortization expense related to acquisition, and (iii) global distribution center transition expense. We define Adjusted EBITDA as our GAAP net income (loss) excluding (i) interest expense (if any), (ii) interest income and other (income) expense, net, (iii) depreciation and amortization expense, (iv) provision (benefit) for income taxes, (v) stock-based compensation and related payroll tax, and global distribution center transition expense. A reconciliation between GAAP and non-GAAP financial measures can be found in the appendix to this document and in the accompany financial results press release.


Agenda ▪ Q1 Overview ▪ Q1 Financial Performance ▪ FY 2023 Outlook


Q1’23: Continued Profitability; Revenue Challenges Revenue Overview • Q1 revenue decreased 7.9% year-over-year • Buying pauses from tier-one service providers in North America due to the economy • No deals lost to competitors, just delayed Consistent Profitability • Adjusted EBITDA was $15.5 million, or 26.8% of revenue • Non-GAAP EPS of $0.13 Key Takeaways • Demonstrated earnings power even amidst revenue challenges • Diversification in revenues and customers mitigates impact of macroeconomic headwinds • Security solutions remain in high demand • Positioned to outperform peer set and achieve full-year profitability targets See Appendix for reconciliation to most comparable GAAP financial measures.


Quarterly Revenue & Non-GAAP Operating Income Operating Income is a Non-GAAP Financial Measure. See Appendix for reconciliation to most comparable GAAP financial measures. $62.7 $68.0 $72.1 $77.6 $57.7 Q1'22 Q2'22 Q3'22 Q4'22 Q1'23 Revenue, $ Millions $11.7 $16.1 $19.5 $19.8 $13.4 Q1'22 Q2'22 Q3'22 Q4'22 Q1'23 Non-GAAP Operating Income, $ Millions $62.7 $57.7 Q1'22 Q1'23 Revenue, $ Millions $11.7 $13.4 Q1'22 Q1'23 Non-GAAP Operating Income, $ Millions


56.4% 43.6% Q1’23 $57.7 million Quarterly Revenue by Customer Vertical 65.0% 65.1% 62.4% 69.2% 56.4% 35.0% 34.9% 37.6% 30.8% 43.6% Q1'22 Q2'22 Q3'22 Q4'22 Q1'23 Enterprise Service Provider


Quarterly Revenue by Geography 48% 49% 49% 48% 53% 57% 50% 53% 52% 36% 39% 34% 35% 28% 32% 34% 33% 27% 16% 12% 17% 17% 19% 11% 16% 14% 21% Q1'21 Q2'21 Q3'21 Q4'21 Q1'22 Q2'22 Q3'22 Q4'22 Q1'23 $ Millions Americas APJ EMEA 52% 27% 21% Q1’23 $57.7 million


Consistent Value Creation Business Model Revenue Growth Capital Allocation


Appendix


Financial Performance Trends Numbers may not sum due to rounding. Please refer to the supplemental financials posted in the “Investor Relations” section of the A10 Networks website at investors.a10networks.com Gross Margin %, Operating Margin %, Adjusted EBITDA and EPS are Non-GAAP Financial Measures. See Appendix for reconciliation to most comparable GAAP financial measures. $ Millions (except EPS) Q1’20 Q2’20 Q3’20 Q4’20 FY 2020 Q1’21 Q2’21 Q3’21 Q4’21 FY 2021 Q1’22 Q2’22 Q3’22 Q4’22 FY 2022 Q1’23 Revenue $53.8 $52.5 $56.6 $62.7 $225.5 $54.8 $59.2 $65.4 $70.7 $250.0 $62.7 $68.0 $72.1 $77.6 $280.3 $57.7 Non-GAAP Gross Margin % 78.3% 78.8% 77.6% 79.6% 78.6% 78.9% 77.9% 80.4% 80.7% 79.6% 80.2% 80.6% 80.2% 80.3% 80.3% 83.1% Non-GAAP Operating Margin % 7.6% 13.8% 17.8% 22.1% 15.6% 19.7% 18.8% 22.2% 24.8% 21.6% 18.6% 23.7% 27.0% 25.5% 23.9% 23.1% Adjusted EBITDA (non- GAAP) $7.2 $9.8 $12.5 $16.1 $45.6 $13.0 $13.2 $16.8 $19.4 $62.4 $13.5 $18.0 $21.3 $22.3 $75.1 $15.5 Non-GAAP EPS $0.05 $0.09 $0.13 $0.18 $0.44 $0.12 $0.13 $0.17 $0.20 $0.63 $0.13 $0.17 $0.20 $0.24 $0.74 $0.13 Ending Cash & Marketable Securities $142.9 $143.4 $159.1 $158.1 $158.1 $161.0 $166.8 $187.5 $185.0 $185.0 $164.7 $166.8 $127.8 $151.0 $151.0 $144.5


GAAP to Non-GAAP – Gross Margin and EPS Numbers may not sum due to rounding. EPS data is presented on a basic and diluted basis. Please refer to the supplemental f inancials posted the “Investor Relations” section of the A10 Networks website at investors.a10networks.com. % of Revenue except EPS Q1'22 Q2'22 Q3'22 Q4'22 Q1'23 Dec 31 2022 Gross Margin % - GAAP 79.5% 80.2% 79.5% 79.7% 82.3% 79.7% Stock-based compensation 0.7% 0.5% 0.7% 0.5% 0.8% 0.6% Global distribution center transition expense 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Gross Margin % - Non-GAAP 80.2% 80.6% 80.2% 80.3% 83.1% 80.3% EPS $ - GAAP 0.08$ 0.13$ 0.16$ 0.24$ 0.05$ 0.60$ Stock-based compensation 0.05 0.04 0.05 0.05 0.05 0.18 Impairment of investment - - - 0.01 - 0.01 Amortization expense related to acquisition - - - - - - Global distribution center transition expense - - - - - - Restructuring expense - - - - 0.03 - Cyber incident remediation expense - - - - 0.02 - Tax benefit from amended returns - - - (0.06) - (0.05) Income tax effect of non-GAAP items (starting Mar-23) - - - - (0.02) - Release of DTA valuation allowance - - - - - - EPS $ - Non-GAAP 0.13$ 0.17$ 0.20$ 0.24$ 0.13$ 0.74$ Year Ended


GAAP to Non-GAAP – Operating Income Numbers may not sum due to rounding. Please refer to the supplemental financials posted the “Investor Relations” section of the A10 Networks website at investors.a10networks.com. $ Millions Q1'22 Q2'22 Q3'22 Q4'22 Q1'23 Dec 31 2022 Income from operations $ - GAAP 8.0$ 13.1$ 15.7$ 16.3$ 6.2$ 53.1$ Stock-based compensation 3.7 2.9 3.8 3.5 4.0 14.0 Amortization expense related to acquisition - - - - - - Global distribution center transition expense - - - - - - Restructuring expense - - - - 1.9 - Cyber incident remediation expense - - - - 1.4 - Income from operations $ - Non-GAAP 11.7$ 16.1$ 19.5$ 19.8$ 13.4$ 67.0$ % of Revenue Income from operations % - GAAP 12.8 % 19.3 % 21.7 % 21.0 % 10.7 % 18.9 % Stock-based compensation 5.9 % 4.3 % 5.3 % 4.6 % 6.9 % 5.0 % Amortization expense related to acquisition —% —% —% —% —% —% Global distribution center transition expense —% —% —% —% —% —% Restructuring expense —% —% —% —% 3.2 % —% Cyber incident remediation expense —% —% —% —% 2.3 % —% Income from operations % - Non-GAAP 18.6 % 23.7 % 27.0 % 25.5 % 23.1 % 23.9 % Year Ended


GAAP to Non-GAAP – Adjusted EBITDA Numbers may not sum due to rounding. Please refer to the supplemental financials posted the “Investor Relations” section of the A10 Networks website at investors.a10networks.com. $ Millions Q1'22 Q2'22 Q3'22 Q4'22 Q1'23 Dec 31 2022 GAAP net income 6.3$ 10.4$ 12.1$ 18.0$ 4.0$ 46.9$ Exclude: Interest income and other (income) expense, net 0.5 (0.5) 0.4 (0.1) 1.2 0.4 Exclude: Depreciation & amortization expense 1.8 1.9 1.8 2.5 2.1 8.0 Exclude: Provision (benefit) for income taxes 1.1 3.2 3.1 (1.7) 1.0 5.8 EBITDA 9.8 15.0 17.5 18.7 8.3 61.1 Exclude: Stock-based compensation 3.7 2.9 3.8 3.5 4.0 14.0 Exclude: Global distribution center transition expense - - - - - - Exclude: Restructuring expense - - - - 1.9 - Exclude: Cyber incident remediation expense - - - - 1.4 - Adjusted EBITDA - Non-GAAP 13.5$ 18.0$ 21.3$ 22.3$ 15.5$ 75.1$ Year Ended