Cover Page
Cover Page - USD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2021 | Apr. 15, 2022 | Jun. 30, 2021 | |
Cover [Abstract] | |||
Document Type | 10-K/A | ||
Document Annual Report | true | ||
Document Period End Date | Dec. 31, 2021 | ||
Current Fiscal Year End Date | --12-31 | ||
Document Transition Report | false | ||
Entity Registrant Name | A10 NETWORKS, INC. | ||
Entity Incorporation, State or Country Code | DE | ||
Entity Tax Identification Number | 20-1446869 | ||
Entity Address, Address Line One | 2300 Orchard Parkway, | ||
Entity Address, City or Town | San Jose | ||
Entity Address, State or Province | CA | ||
Entity Address, Postal Zip Code | 95131 | ||
City Area Code | 408 | ||
Local Phone Number | 325-8668 | ||
Title of 12(b) Security | Common Stock, $.00001 Par Value | ||
Trading Symbol | ATEN | ||
Security Exchange Name | NYSE | ||
Entity Well-known Seasoned Issuer | Yes | ||
Entity Voluntary Filers | No | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
Entity Filer Category | Accelerated Filer | ||
Entity Small Business | false | ||
Entity Emerging Growth Company | false | ||
ICFR Auditor Attestation Flag | true | ||
Entity Public Float | $ 663.7 | ||
Entity Common Stock, Shares Outstanding | 75,733,380 | ||
Entity Shell Company | false | ||
Entity File Number | 001-36343 | ||
Amendment Flag | false | ||
Entity Central Index Key | 0001580808 | ||
Document Fiscal Period Focus | FY | ||
Document Fiscal Year Focus | 2021 | ||
Auditor Name | Armanino LLP |
Audit Information
Audit Information | 12 Months Ended |
Dec. 31, 2021 | |
Audit Information [Abstract] | |
Auditor Name | Armanino LLP |
Auditor Firm ID | 32 |
Auditor Location | San Jose, California |