8-K

A10 Networks, Inc. (ATEN)

8-K 2024-04-30 For: 2024-04-30
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

April 30, 2024

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 April 30, 2024, A10 Networks, Inc. (the “Company”) issued a press release regarding financial results for the quarter ended March 31, 2024. A copy of the press release is furnished herewith as Exhibit 99.1.

Item 7.01    Regulation FD Disclosure

On April 30, 2024, the Company posted on its website (www.a10networks.com) slides regarding the financial results for the quarter ended March 31, 2024. 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 April 30, 2024, 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 3, 2024 to stockholders of record on May 15, 2024. 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, 2023, 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 datedAprilq1-24exx9914302024earnings.htm30, 2024.
99.2 Slides of A10 Network, Inc. datedAprilatenq12024earningscallsl.htm30, 2024, regarding financial results of the firstquarter endedMarch31, 2024.

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: April 30, 2024

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

Document

EXHIBIT 99.1

a10logoa.jpg

A10 Networks Reports In-line Financial Results for the First Quarter of 2024

Company Delivers Revenue Growth YoY and Expands Earnings Per Share

SAN JOSE, Calif., April 30, 2024 -- A10 Networks, Inc. (NYSE: ATEN), a leading provider of cybersecurity and infrastructure solutions, today announced financial results for its first quarter ended March 31, 2024.

First Quarter 2024 Financial Summary

•Revenue of $60.7 million, in-line with expectations and up 5.2% year-over-year.

•GAAP gross margin of 81.1%; non-GAAP gross margin of 81.9% as a result of continued focus on operational execution of business model goals in spite of near-term volatility in the market.

•GAAP net income of $9.7 million (16.0% of revenue), or $0.13 per diluted share, compared to net income of $4.0 million (6.9% of revenue) or $0.05 per diluted share in the first quarter of 2023.

•Non-GAAP net income of $12.7 million (21.0% of revenue), or $0.17 per diluted share (non-GAAP EPS) compared to non-GAAP net income of $9.9 million (17.2% of revenue) or $0.13 per diluted share in the first quarter of 2023.

•The Company returned $7.5 million to investors, having repurchased 230,500 shares at an average price of $13.19 for a total of $3.0 million and having paid $4.5 million in cash dividends in the quarter.

•The Board of Directors approved a quarterly cash dividend of $0.06 per share, payable June 3, 2024 to stockholders of record at the close of business on May 15, 2024.

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

“A10 continued to successfully navigate market volatility, as our diversification enabled us to address near-term Service Provider fluctuations, delivering solid first quarter results in-line with expectations,” said Dhrupad Trivedi, President and Chief Executive Officer of A10 Networks. “Our service provider customers are committed to improving network throughput and security, and A10’s solutions are designed into long-term initiatives that help them achieve their mission critical goals. When investments are made, we benefit, as we did in this quarter. The economic environment remains somewhat unpredictable and the first quarter represents an encouraging data point.”

“Recent and ongoing investments to better position A10 to target the evolving needs of the enterprise market are beginning to show results,” continued Trivedi. “Deferred revenue grew faster in Q1 than overall revenue, representative of the buying behavior of the enterprise customer base. We believe enterprise revenue will continue to grow throughout the year based on active pipeline and customer engagements. Security solutions continue to be in demand, and security solutions were 61% of A10’s consolidated revenue, in line with our long-term strategic goal. Simultaneously, we have continued to invest in R&D to address the evolving needs of our customers including AI solutions.”

“A10’s focus on diversification, both in terms of customer type and region, continues to provide a durable foundation as we navigate this period of volatility,” concluded Trivedi. “Our business model enables us to maintain solid profitability, even while we increase R&D investments to drive future growth, allowing us to continue to return capital to shareholders.”

Conference Call

Management will host a call at 1:30 p.m. Pacific time (4:30 p.m. Eastern time) today, April 30, 2024, 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: 948155.

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 14 days and may be accessed by dialing (866) 813-9403 (toll-free) or (929) 458-6194 and entering the passcode 824974.

Forward-Looking Statements

This press release contains “forward-looking statements,” including statements regarding our quarterly dividend payments and stock repurchase program, strategy, growth, customer opportunities, profitability, revenue and expectations for 2024, market trends, investments and return of capital. 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 any unforeseen need for capital which may require us to divert funds we may have otherwise used for the dividend program or stock repurchase program, which may in turn negatively impact our ability to administer the quarterly dividends or the repurchase of our common stock; 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 29, 2024. 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, Adjusted EBITDA and Adjusted EBITDA margin. 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) restructuring expense, (iii) cyber incident remediation expense and (iv) income tax effect of 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) restructuring expense and (iii) cyber incident remediation 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) restructuring expense and (iii) cyber incident remediation 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) restructuring expense and (iii) cyber incident remediation 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) restructuring expense and (vi) cyber incident remediation expense. We define Adjusted EBITDA margin as our Adjusted EBITDA divided by our GAAP revenue.

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 security and infrastructure solutions for on-premises, hybrid cloud, and edge-cloud environments. Our 7000+ customers span global large enterprises and communications, cloud and web service providers who must ensure business-critical applications and networks are secure, available, and efficient. Founded in 2004, A10 Networks is based in San Jose, Calif. and serves customers globally. For more information, visit A10networks.com and follow us at 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,
2024 2023
Net revenue:
Products $ 30,069 $ 31,182
Services 30,606 26,509
Total net revenue 60,675 57,691
Cost of net revenue:
Products 6,799 6,083
Services 4,645 4,133
Total cost of net revenue 11,444 10,216
Gross profit 49,231 47,475
Operating expenses:
Sales and marketing 21,214 22,334
Research and development 14,063 11,665
General and administrative 6,741 7,309
Total operating expenses 42,018 41,308
Income from operations 7,213 6,167
Non-operating income (expense), net:
Interest income 1,681 973
Other income (expense), net 2,326 (2,218)
Non-operating income (expense), net 4,007 (1,245)
Income before provision for income taxes 11,220 4,922
Provision for income taxes 1,494 964
Net income $ 9,726 $ 3,958
Net income per share:
Basic $ 0.13 $ 0.05
Diluted $ 0.13 $ 0.05
Weighted-average shares used in computing net income per share:
Basic 74,451 74,001
Diluted 75,318 75,541

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,
2024 2023
GAAP net income $ 9,726 $ 3,958
Non-GAAP items:
Stock-based compensation and related payroll tax 3,989 3,970
Restructuring expense 1,861
Cyber incident remediation expense 1,353
Income tax-effect of non-GAAP items (970) (1,215)
Total non-GAAP items 3,019 5,969
Non-GAAP net income $ 12,745 $ 9,927
GAAP net income per share:
Basic $ 0.13 $ 0.05
Diluted $ 0.13 $ 0.05
Non-GAAP items:
Stock-based compensation and related payroll tax 0.05 0.05
Restructuring expense 0.03
Cyber incident remediation expense 0.02
Income tax-effect of non-GAAP items (0.01) (0.02)
Total non-GAAP items 0.04 0.08
Non-GAAP net income per share:
Basic $ 0.17 $ 0.13
Diluted $ 0.17 $ 0.13
Weighted average shares used in computing net income per share:
Basic 74,451 74,001
Diluted 75,318 75,541

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>2024 December 31,<br>2023
ASSETS
Current assets:
Cash and cash equivalents $ 122,909 $ 97,244
Marketable securities 59,163 62,056
Accounts receivable, net of allowances of $1,181 and $405, respectively 55,906 74,307
Inventory 24,895 23,522
Prepaid expenses and other current assets 13,225 14,695
Total current assets 276,098 271,824
Property and equipment, net 30,254 29,876
Goodwill 1,307 1,307
Deferred tax assets, net 62,323 62,725
Other non-current assets 25,676 24,077
Total assets $ 395,658 $ 389,809
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable $ 5,049 $ 7,024
Accrued liabilities 24,466 21,388
Deferred revenue 83,345 82,657
Total current liabilities 112,860 111,069
Deferred revenue, non-current 57,561 58,677
Other non-current liabilities 10,928 12,187
Total liabilities 181,349 181,933
Stockholders' equity:
Common stock, $0.00001 par value: 500,000 shares authorized; 89,309 and 89,003 shares issued and 74,434 and 74,359 shares outstanding, respectively 1 1
Treasury stock, at cost: 14,875 and 14,644 shares, respectively (153,948) (150,909)
Additional paid-in-capital 491,164 486,958
Dividends paid (42,091) (37,619)
Accumulated other comprehensive income (loss) (59) (71)
Accumulated deficit (80,758) (90,484)
Total stockholders' equity 214,309 207,876
Total liabilities and stockholders' equity $ 395,658 $ 389,809

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands, on a GAAP Basis)

Three Months Ended March 31,
2024 2023
Cash flows from operating activities:
Net income $ 9,726 $ 3,958
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization 2,692 2,106
Stock-based compensation 3,839 3,742
Other non-cash items 456 (169)
Changes in operating assets and liabilities:
Accounts receivable 17,684 5,687
Inventory (2,187) (1,522)
Prepaid expenses and other assets 1,549 1,519
Accounts payable (2,707) (676)
Accrued liabilities 1,820 (16,997)
Deferred revenue (428) 1,506
Net cash provided by (used in) operating activities 32,444 (846)
Cash flows from investing activities:
Proceeds from sales of marketable securities 4,391
Proceeds from maturities of marketable securities 39,899 29,263
Purchases of marketable securities (40,722) (21,221)
Capital expenditures (2,925) (2,675)
Net cash provided by investing activities 643 5,367
Cash flows from financing activities:
Proceeds from issuance of common stock under employee equity incentive plans 89 473
Repurchase of common stock (3,039)
Payments for dividends (4,472) (4,446)
Net cash used in financing activities (7,422) (3,973)
Net increase in cash and cash equivalents 25,665 548
Cash and cash equivalents—beginning of period 97,244 67,971
Cash and cash equivalents—end of period $ 122,909 $ 68,519
Non-cash investing and financing activities:
Transfers between inventory and property and equipment $ 813 $ 824
Purchases of property and equipment included in accounts payable $ 732 $ 142

A10 NETWORKS, INC.

RECONCILIATION OF GAAP GROSS PROFIT TO NON-GAAP GROSS PROFIT

(unaudited, in thousands, except percentages)

Three Months Ended March 31,
2024 2023
GAAP gross profit $ 49,231 $ 47,475
GAAP gross margin 81.1 % 82.3 %
Non-GAAP adjustments:
Stock-based compensation and related payroll tax 471 444
Restructuring expense 42
Cyber incident remediation expense 3
Non-GAAP gross profit $ 49,702 $ 47,964
Non-GAAP gross margin 81.9 % 83.1 %

A10 NETWORKS, INC.

RECONCILIATION OF GAAP TOTAL OPERATING EXPENSES

TO NON-GAAP TOTAL OPERATING EXPENSES

(unaudited, in thousands)

Three Months Ended March 31,
2024 2023
GAAP total operating expenses $ 42,018 $ 41,308
Non-GAAP adjustments:
Stock-based compensation and related payroll tax (3,518) (3,526)
Restructuring expense (1,819)
Cyber incident remediation expense (1,350)
Non-GAAP total operating expenses $ 38,500 $ 34,613

A10 NETWORKS, INC.

RECONCILIATION OF GAAP INCOME FROM OPERATIONS

TO NON-GAAP OPERATING INCOME

(unaudited, in thousands, except percentages)

Three Months Ended March 31,
2024 2023
GAAP income from operations $ 7,213 $ 6,167
GAAP operating margin 11.9 % 10.7 %
Non-GAAP adjustments:
Stock-based compensation and related payroll tax 3,989 3,970
Restructuring expense 1,861
Cyber incident remediation expense 1,353
Non-GAAP operating income $ 11,202 $ 13,351
Non-GAAP operating margin 18.5 % 23.1 %

A10 NETWORKS, INC.

RECONCILIATION OF GAAP NET INCOME TO

EBITDA AND ADJUSTED EBITDA (NON-GAAP)

(unaudited, in thousands, except percentages)

Three Months Ended March 31,
2024 2023
GAAP net income $ 9,726 $ 3,958
GAAP net income margin 16.0 % 6.9 %
Exclude: Interest and other (income) expense, net (4,007) 1,245
Exclude: Depreciation and amortization 2,692 2,106
Exclude: Provision for income taxes 1,494 964
EBITDA 9,905 8,273
Exclude: Stock-based compensation and related payroll tax 3,989 3,970
Exclude: Restructuring expense 1,861
Exclude: Cyber incident remediation expense 1,353
Adjusted EBITDA $ 13,894 $ 15,457
Adjusted EBITDA margin 22.9 % 26.8 %

atenq12024earningscallsl

Q1 2024 Financial Results & Commentary April 30, 2024


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, demand, positioning, capital allocation strategy and value creation, and market and technology trends. 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 any unforeseen need for capital which may require us to divert funds we may have otherwise used for the dividend program or stock repurchase program, which may in turn negatively impact our ability to administer the quarterly dividends or the repurchase of our common stock; 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 29, 2024. 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. 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 excluding: (i) stock-based compensation and related payroll tax, (ii) restructuring expense, (iii) cyber incident remediation expense and (iv) income tax effect of 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) restructuring expense and (iii) cyber incident remediation 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) restructuring expense and (iii) cyber incident remediation 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) restructuring expense and (iii) cyber incident remediation 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) restructuring expense and (vi) cyber incident remediation expense. We define Adjusted EBITDA margin as our Adjusted EBITDA divided by our GAAP revenue. A reconciliation between GAAP and non-GAAP financial measures can be found in the appendix to this document and in the accompanying financial results press release.


Agenda ▪ Q1 2024 Overview ▪ Q1 Financial Performance ▪ FY 2024 Outlook


Q1’24: In-line Revenue Growth & EPS Expansion Revenue Overview • Q1 revenue increased 5.2% year-over-year • Improvement from Service Providers represents an encouraging data point amidst an unpredictable economic environment Consistent Profitability • Non-GAAP gross margins of 81.9% • GAAP EPS of $0.13 compared to $0.05 in Q1’23 • Non-GAAP EPS of $0.17 compared to $0.13 in Q1’23 Key Takeaways • Revenue and profitability in-line with consensus • Investing to strengthen our position with enterprise customers, and well-aligned with service provider customer investment plans as demonstrated in Q1 • Security solutions remain in high demand See Appendix for reconciliation to most comparable GAAP financial measures.


Quarterly Revenue & Adjusted EBITDA Operating Income is a Non-GAAP Financial Measure. See Appendix for reconciliation to most comparable GAAP financial measures. $57.7 $65.8 $57.8 $70.4 $60.7 Q1'23 Q2'23 Q3'23 Q4'23 Q1'24 Revenue, $ Millions $15.5 $17.4 $14.4 $23.9 $13.9 Q1'23 Q2'23 Q3'23 Q4'23 Q1'24 Adjusted EBITDA, $ Millions $57.7 $60.7 Q1'23 Q1'24 Revenue, $ Millions $15.5 $13.9 Q1'23 Q1'24 Adjusted EBITDA, $ Millions


62% 38% Q1’24 $60.7 million Quarterly Revenue by Customer Vertical 56.4% 67.4% 49.7% 58.4% 62.0% 43.6% 32.6% 50.3% 41.6% 38.0% Q1'23 Q2'23 Q3'23 Q4'23 Q1'24 Enterprise Service Provider


Quarterly Revenue by Geography 49% 49% 48% 53% 57% 50% 53% 52% 56% 45% 57% 45% 39% 34% 35% 28% 32% 34% 33% 27% 33% 37% 26% 41% 12% 17% 17% 19% 11% 16% 14% 21% 11% 19% 16% 14% Q2'21 Q3'21 Q4'21 Q1'22 Q2'22 Q3'22 Q4'22 Q1'23 Q2'23 Q3'23 Q4'23 Q1'24 $ Millions Americas APJ EMEA 45% 41% 14% Q1’24 $60.7 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) Q1’21 Q2’21 Q3’21 Q4’21 FY 2021 Q1’22 Q2’22 Q3’22 Q4’22 FY 2022 Q1’23 Q2’23 Q3’23 Q4’23 FY 2023 Q1’24 Revenue $54.8 $59.2 $65.4 $70.7 $250.0 $62.7 $68.0 $72.1 $77.6 $280.3 $57.7 $65.8 $57.8 $70.4 $251.7 $60.7 Non-GAAP Gross Margin % 78.9% 77.9% 80.4% 80.7% 79.6% 80.2% 80.6% 80.2% 80.3% 80.3% 83.1% 80.2% 81.8% 81.8% 81.7% 81.9% Non-GAAP Operating Margin % 19.7% 18.8% 22.2% 24.8% 21.6% 18.6% 23.7% 27.0% 25.5% 23.9% 23.1% 23.1% 20.6% 30.4% 24.6% 18.5% Adjusted EBITDA (non-GAAP) $13.0 $13.2 $16.8 $19.4 $62.4 $13.5 $18.0 $21.3 $22.3 $75.1 $15.5 $17.4 $14.4 $23.9 $71.2 $13.9 Non-GAAP EPS $0.12 $0.13 $0.17 $0.20 $0.63 $0.13 $0.17 $0.20 $0.24 $0.74 $0.13 $0.19 $0.16 $0.25 $0.73 $0.17 Ending Cash & Marketable Securities $161.0 $166.8 $187.5 $185.0 $185.0 $164.7 $166.8 $127.8 $151.0 $151.0 $144.5 $153.9 $169.0 $159.3 $159.3 $182.1


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 financials posted the “Investor Relations” section of the A10 Networks website at investors.a10networks.com. Q1'23 Q2'23 Q3'23 Q4'23 Dec 31 2023 Q1'24 Revenue 57.7$ 65.8$ 57.8$ 70.4$ 251.7$ 60.7$ Gross Margin % - Non-GAAP 83.1% 80.2% 81.8% 81.8% 81.7% 81.9% Income from operations % - Non-GAAP 23.1% 23.1% 20.6% 30.4% 24.6% 18.5% Adjusted EBITDA - Non-GAAP 15.5$ 17.4$ 14.4$ 23.9$ 71.2$ 13.9$ EPS $ - Non-GAAP 0.13$ 0.19$ 0.16$ 0.25$ 0.73$ 0.17$ Ending Cash & Marketable Securities 144.5$ 153.9$ 169.0$ 159.3$ 159.3$ 182.1$ Years 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. Q3’23 $ Millions Q1'23 Q2'23 Q3'23 Q4'23 Dec 31 2023 Q1'24 Income from operations $ - GAAP 6.2$ 12.3$ 2.2$ 18.0$ 38.6$ 7.2$ Stock-based compensation 4.0 3.5 4.3 2.9 14.7 4.0 One-time tax planning expense - - - 0.5 0.5 - Capitalized project impairment - - 3.0 - 3.0 - Workforce reduction severance 1.9 - 2.4 - 4.3 - Cyber incident remediation expense 1.4 (0.6) - - 0.7 - Income from operations $ - Non-GAAP 13.4$ 15.2$ 11.9$ 21.4$ 61.8$ 11.2$ % of Revenue Income from operations % - GAAP 10.7 % 18.6 % 3.8 % 25.6 % 15.4 % 11.9 % Stock-based compensation 6.9 % 5.4 % 7.5 % 4.1 % 5.8 % 6.6 % One-time tax planning expense —% —% —% 0.7 % 0.2 % —% Capitalized project impairment —% —% 5.1 % —% 1.2 % —% Workforce reduction severance 3.2 % —% 4.2 % —% 1.7 % —% Cyber incident remediation expense 2.3 % (0.9)% —% —% 0.3 % —% Income from operations % - Non-GAAP 23.1 % 23.1 % 20.6 % 30.4 % 24.6 % 18.5 % Years 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 Q1'23 Q2'23 Q3'23 Q4'23 Dec 31 2023 Q1'24 GAAP net income 4.0$ 11.6$ 6.5$ 17.9$ 40.0$ 9.7$ Exclude: Interest income and other (income) expense, net 1.2 (2.5) (2.8) (1.1) (5.1) (4.0) Exclude: Depreciation & amortization expense 2.1 2.2 2.5 2.5 9.3 2.7 Exclude: Provision (benefit) for income taxes 1.0 3.2 (1.5) 1.2 3.8 1.5 EBITDA 8.3 14.5 4.7 20.5 48.0 9.9 Exclude: Stock-based compensation 4.0 3.5 4.3 2.9 14.7 4.0 Exclude: Sone-time tax planning expense - - - 0.5 0.5 - Exclude: Capitalized project impairment - - 3.0 - 3.0 - Exclude: Workforce reduction severance 1.9 - 2.4 - 4.3 - Exclude: Cyber incident remediation expense 1.4 (0.6) - - 0.7 - Adjusted EBITDA - Non-GAAP 15.5$ 17.4$ 14.4$ 23.9$ 71.2$ 13.9$ Years Ended