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Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."}],"balance_after":50586,"source":{"system":"sec-edgar","filing":"0001936128-26-000027","document":"wk-form4_1786566343.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000027/wk-form4_1786566343.xml","form_type":"4"}},{"id":715637,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2026-07-06T21:46:51.000Z","date":"2026-07-06","kind":"tax_withholding","planned":false,"acquired":false,"shares":1897,"price":36.3,"value":68861.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld, on a non-discretionary basis, for tax purposes related to a July 1, 2022 restricted stock unit grant that vested on July 5, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 1,042 shares acquired by the Reporting Person on May 31, 2026 pursuant to the Issuer's Employee Stock Purchase Plan."}],"balance_after":64672,"source":{"system":"sec-edgar","filing":"0001936128-26-000024","document":"wk-form4_1783374408.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000024/wk-form4_1783374408.xml","form_type":"4"}},{"id":777273,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2026-05-15T23:17:00.000Z","date":"2026-05-15","kind":"tax_withholding","planned":false,"acquired":false,"shares":1930,"price":28.03,"value":54097.9,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This amendment to the original Form 4 filed on May 15, 2026 is being filed to correct the price reported in Column 4 of Table I in connection with the shares withheld, on a non-discretionaly basis, for tax purposes related to a February 6, 2025 performance-based restricted stock unit grant and a February 12, 2026 performance-based restricted stock unti grant, each that vested on May 14, 2026."}],"balance_after":65527,"source":{"system":"sec-edgar","filing":"0001936128-26-000021","document":"wk-form4a_1778887018.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000021/wk-form4a_1778887018.xml","form_type":"4/A","original_submission_date":"2026-05-15"}},{"id":777272,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Performance-based Restricted Stock Units","published_at":"2026-05-15T21:50:50.000Z","date":"2026-05-14","kind":"exercise","planned":false,"acquired":false,"shares":3882,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Performance-Based Restricted Stock Units were previously reported on February 10, 2025, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting\nsubject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 6,\n2025 and February 6, 2029. The second achievement date occurred on May 6, 2026, as certified by the compensation committee of ATEN, resulting in 3,882 units meeting the appropriate performance\nbased conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 14, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of May 6, 2026, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Performance-Based Restricted Stock Units were previously reported on February 10, 2025, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting\nsubject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 6,\n2025 and February 6, 2029. The second achievement date occurred on May 6, 2026, as certified by the compensation committee of ATEN, resulting in 3,882 units meeting the appropriate performance\nbased conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 14, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of May 6, 2026, subject to continued employment. These shares are reflected on Table I."}],"balance_after":0,"derivative":{"expiration_date":"2029-02-06","underlying":"Common Stock","underlying_shares":3882},"source":{"system":"sec-edgar","filing":"0001936128-26-000019","document":"wk-form4_1778881847.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000019/wk-form4_1778881847.xml","form_type":"4"}},{"id":777271,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Performance-based Restricted Stock Units","published_at":"2026-05-15T21:50:50.000Z","date":"2026-05-14","kind":"exercise","planned":false,"acquired":false,"shares":3706,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-Based Restricted Stock Units that were previously reported on February 13, 2026, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 12, 2026 and February 12, 2030. The second achievement date occurred on April 27, 2026, as certified by the compensation committee of ATEN, resulting in 3,706 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 14, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 27, 2026, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units that were previously reported on February 13, 2026, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 12, 2026 and February 12, 2030. The second achievement date occurred on April 27, 2026, as certified by the compensation committee of ATEN, resulting in 3,706 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 14, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 27, 2026, subject to continued employment. These shares are reflected on Table I."}],"balance_after":0,"derivative":{"expiration_date":"2030-02-12","underlying":"Common Stock","underlying_shares":3706},"source":{"system":"sec-edgar","filing":"0001936128-26-000019","document":"wk-form4_1778881847.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000019/wk-form4_1778881847.xml","form_type":"4"}},{"id":777270,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2026-05-15T21:50:50.000Z","date":"2026-05-15","kind":"tax_withholding","planned":false,"acquired":false,"shares":1930,"price":27,"value":52110.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Includes 987 shares and 943 shares automatically withheld, on a non-discretionary basis, for tax purposes related to a February 6, 2025 performance-based restricted stock unit grant and a February\n12, 2026 performance-based restricted stock unit grant, respectively, each that vested on May 14, 2026."}],"balance_after":65527,"source":{"system":"sec-edgar","filing":"0001936128-26-000019","document":"wk-form4_1778881847.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000019/wk-form4_1778881847.xml","form_type":"4"}},{"id":777269,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2026-05-15T21:50:50.000Z","date":"2026-05-14","kind":"exercise","planned":false,"acquired":true,"shares":3882,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Performance-Based Restricted Stock Units were previously reported on February 10, 2025, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting\nsubject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 6,\n2025 and February 6, 2029. The second achievement date occurred on May 6, 2026, as certified by the compensation committee of ATEN, resulting in 3,882 units meeting the appropriate performance\nbased conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 14, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of May 6, 2026, subject to continued employment. These shares are reflected on Table I."}],"balance_after":67457,"source":{"system":"sec-edgar","filing":"0001936128-26-000019","document":"wk-form4_1778881847.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000019/wk-form4_1778881847.xml","form_type":"4"}},{"id":777268,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2026-05-15T21:50:50.000Z","date":"2026-05-14","kind":"exercise","planned":false,"acquired":true,"shares":3706,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance-Based Restricted Stock Units that were previously reported on February 13, 2026, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 12, 2026 and February 12, 2030. The second achievement date occurred on April 27, 2026, as certified by the compensation committee of ATEN, resulting in 3,706 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 14, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 27, 2026, subject to continued employment. These shares are reflected on Table I."}],"balance_after":63575,"source":{"system":"sec-edgar","filing":"0001936128-26-000019","document":"wk-form4_1778881847.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000019/wk-form4_1778881847.xml","form_type":"4"}},{"id":790084,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Performance-based Restricted Stock Units","published_at":"2026-05-07T01:29:26.000Z","date":"2026-05-05","kind":"exercise","planned":false,"acquired":false,"shares":3707,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Performance-Based Restricted Stock Units that were previously reported on February 13, 2026, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 12, 2026 and February 12, 2030. The first achievement date occurred on April 22, 2026, as certified by the compensation committee of ATEN, resulting in 3,707 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 5, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 22, 2026, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Performance-Based Restricted Stock Units that were previously reported on February 13, 2026, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 12, 2026 and February 12, 2030. The first achievement date occurred on April 22, 2026, as certified by the compensation committee of ATEN, resulting in 3,707 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 5, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 22, 2026, subject to continued employment. These shares are reflected on Table I."}],"balance_after":3706,"derivative":{"expiration_date":"2030-02-12","underlying":"Common Stock","underlying_shares":3707},"source":{"system":"sec-edgar","filing":"0001936128-26-000017","document":"wk-form4_1778117363.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000017/wk-form4_1778117363.xml","form_type":"4"}},{"id":790083,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Performance-based Restricted Stock Units","published_at":"2026-05-07T01:29:26.000Z","date":"2026-05-05","kind":"exercise","planned":false,"acquired":false,"shares":3882,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on February 10, 2025, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 6, 2025 and February 6, 2029. The first achievement date occurred on April 16, 2026, as certified by the compensation committee of ATEN, resulting in 3,882 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 5, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 16, 2026, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on February 10, 2025, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 6, 2025 and February 6, 2029. The first achievement date occurred on April 16, 2026, as certified by the compensation committee of ATEN, resulting in 3,882 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 5, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 16, 2026, subject to continued employment. These shares are reflected on Table I."}],"balance_after":3882,"derivative":{"expiration_date":"2029-02-06","underlying":"Common Stock","underlying_shares":3882},"source":{"system":"sec-edgar","filing":"0001936128-26-000017","document":"wk-form4_1778117363.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000017/wk-form4_1778117363.xml","form_type":"4"}},{"id":790082,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2026-05-07T01:29:26.000Z","date":"2026-05-06","kind":"tax_withholding","planned":false,"acquired":false,"shares":1930,"price":27.13,"value":52360.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Includes 987 shares and 943 shares automatically withheld, on a non-discretionary basis, for tax purposes related to a February 6, 2025 performance-based restricted stock unit grant and a February 12, 2026 performance-based restricted stock unit grant, respectively, each that vested on May 5, 2026."}],"balance_after":59869,"source":{"system":"sec-edgar","filing":"0001936128-26-000017","document":"wk-form4_1778117363.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000193612826000017/wk-form4_1778117363.xml","form_type":"4"}},{"id":790081,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2026-05-07T01:29:26.000Z","date":"2026-05-05","kind":"exercise","planned":false,"acquired":true,"shares":3707,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Performance-Based Restricted Stock Units that were previously reported on February 13, 2026, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 12, 2026 and February 12, 2030. The first achievement date occurred on April 22, 2026, as certified by the compensation committee of ATEN, resulting in 3,707 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 5, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 22, 2026, subject to continued employment. 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The first achievement date occurred on April 16, 2026, as certified by the compensation committee of ATEN, resulting in 3,882 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 5, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 16, 2026, subject to continued employment. 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The milestone achievement date occurred on February 10, 2025, as certified by the compensation committee of ATEN, resulting in 14,920 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on February 20, 2025 and an additional one-quarter (1/4) on each of the first and second anniversaries of February 10, 2025, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on July 5, 2022, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 1, 2022 and July 1, 2026. The milestone achievement date occurred on February 10, 2025, as certified by the compensation committee of ATEN, resulting in 14,920 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on February 20, 2025 and an additional one-quarter (1/4) on each of the first and second anniversaries of February 10, 2025, subject to continued employment. These shares are reflected on Table I."}],"balance_after":0,"derivative":{"expiration_date":"2026-07-01","underlying":"Common Stock","underlying_shares":14920},"source":{"system":"sec-edgar","filing":"0001580808-25-000037","document":"wk-form4_1740433497.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000158080825000037/wk-form4_1740433497.xml","form_type":"4"}},{"id":1249953,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2025-02-24T21:45:06.000Z","date":"2025-02-21","kind":"tax_withholding","planned":false,"acquired":false,"shares":3788,"price":21.13,"value":80040.44,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares automatically withheld, on a non-discretionary basis, for tax purposes related to July 1, 2022 performance restricted stock unit grant that vested on February 20, 2025."}],"balance_after":59063,"source":{"system":"sec-edgar","filing":"0001580808-25-000037","document":"wk-form4_1740433497.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000158080825000037/wk-form4_1740433497.xml","form_type":"4"}},{"id":1249952,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2025-02-24T21:45:06.000Z","date":"2025-02-20","kind":"exercise","planned":false,"acquired":true,"shares":14920,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on July 5, 2022, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 1, 2022 and July 1, 2026. The milestone achievement date occurred on February 10, 2025, as certified by the compensation committee of ATEN, resulting in 14,920 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on February 20, 2025 and an additional one-quarter (1/4) on each of the first and second anniversaries of February 10, 2025, subject to continued employment. 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The first achievement date occurred on January 31, 2025, as certified by the compensation committee of ATEN, resulting in 5,956 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on February 13, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 31, 2025, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units that were previously reported on February 22, 2023, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 21, 2023 and February 21, 2027. The first achievement date occurred on January 31, 2025, as certified by the compensation committee of ATEN, resulting in 5,956 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on February 13, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 31, 2025, subject to continued employment. These shares are reflected on Table I."}],"balance_after":5956,"derivative":{"expiration_date":"2027-02-21","underlying":"Common Stock","underlying_shares":5956},"source":{"system":"sec-edgar","filing":"0001580808-25-000027","document":"wk-form4_1739929192.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000158080825000027/wk-form4_1739929192.xml","form_type":"4"}},{"id":1264156,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2025-02-19T01:39:59.000Z","date":"2025-02-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":1512,"price":21.68,"value":32780.16,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares automatically withheld, on a non-discretionary basis, for tax purposes related to a February 21, 2023 performance restricted stock unit grant that vested on February 13, 2025."}],"balance_after":47931,"source":{"system":"sec-edgar","filing":"0001580808-25-000027","document":"wk-form4_1739929192.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000158080825000027/wk-form4_1739929192.xml","form_type":"4"}},{"id":1264155,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2025-02-19T01:39:59.000Z","date":"2025-02-13","kind":"exercise","planned":false,"acquired":true,"shares":5956,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance-Based Restricted Stock Units that were previously reported on February 22, 2023, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 21, 2023 and February 21, 2027. The first achievement date occurred on January 31, 2025, as certified by the compensation committee of ATEN, resulting in 5,956 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on February 13, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 31, 2025, subject to continued employment. These shares are reflected on Table I."}],"balance_after":49443,"source":{"system":"sec-edgar","filing":"0001580808-25-000027","document":"wk-form4_1739929192.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000158080825000027/wk-form4_1739929192.xml","form_type":"4"}},{"id":1276785,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Performance-based Restricted Stock Units","published_at":"2025-02-10T22:07:21.000Z","date":"2025-02-06","kind":"grant","planned":false,"acquired":true,"shares":7764,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each share is represented by a Performance-based Restricted Stock Unit (\"PSU\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Grant of 7,764 PSUs, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day period between February 6, 2025 and February 6, 2029. Once a milestone is met, vesting is subject to continued employment with the Company through the applicable vesting date, the first fifty percent (50%) of which will occur within thirty (30) days of achievment of the applicable milestone and the balance to vest twenty-five percent (25%) on each of the first and second anniversaries of achievement of the corresponding performance milestone."}],"balance_after":7764,"derivative":{"expiration_date":"2029-02-06","underlying":"Common Stock","underlying_shares":7764},"source":{"system":"sec-edgar","filing":"0001580808-25-000025","document":"wk-form4_1739225234.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000158080825000025/wk-form4_1739225234.xml","form_type":"4"}},{"id":1276784,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2025-02-10T22:07:21.000Z","date":"2025-02-06","kind":"grant","planned":false,"acquired":true,"shares":7764,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each share is represented by a Restricted Stock Unit (\"RSU\"). One-third (1/3) of the total RSUs will vest on each of the first three (3) anniversaries of the Vesting Commencement Date (2/1/2025),\nprovided that the Reporting Person continues to serve through each such vesting date."}],"balance_after":43487,"source":{"system":"sec-edgar","filing":"0001580808-25-000025","document":"wk-form4_1739225234.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000158080825000025/wk-form4_1739225234.xml","form_type":"4"}},{"id":1285245,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Common Stock","published_at":"2025-02-04T22:29:54.000Z","date":"2025-02-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":3196,"price":19.61,"value":62673.56,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares automatically withheld, on a non-discretionary basis, for tax purposes related to restricted stock units granted on February 21, 2023 and January 30, 2024, each of which vested on February 1, 2025."}],"balance_after":35723,"source":{"system":"sec-edgar","filing":"0001580808-25-000019","document":"wk-form4_1738708187.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000158080825000019/wk-form4_1738708187.xml","form_type":"4"}},{"id":1294607,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Performance-based Restricted Stock Units","published_at":"2025-01-27T23:27:41.000Z","date":"2025-01-23","kind":"exercise","planned":false,"acquired":false,"shares":7290,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The second milestone achievement date occurred on January 15, 2025, as certified by the compensation committee of ATEN, resulting in 7,290 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on January 23, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 15, 2025, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The second milestone achievement date occurred on January 15, 2025, as certified by the compensation committee of ATEN, resulting in 7,290 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on January 23, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 15, 2025, subject to continued employment. 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The second milestone achievement date occurred on January 15, 2025, as certified by the compensation committee of ATEN, resulting in 7,290 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on January 23, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 15, 2025, subject to continued employment. These shares are reflected on Table I."}],"balance_after":40963,"source":{"system":"sec-edgar","filing":"0001580808-25-000006","document":"wk-form4_1738020454.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1936128/000158080825000006/wk-form4_1738020454.xml","form_type":"4"}},{"id":1320492,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":24191,"kind":"person","name":"Weber Robert Scott","position":1,"cik":"0001936128","reported_name":"Weber Robert Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Performance-based Restricted Stock Units","published_at":"2024-12-31T01:00:52.000Z","date":"2024-12-26","kind":"exercise","planned":false,"acquired":false,"shares":7290,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The first achievement date occurred on December 13, 2024, as certified by the compensation committee of ATEN, resulting in 7,290 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on December 26, 2024 and an additional one-fourth (1/4) on each of the first and second anniversaries of December 13, 2024, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The first achievement date occurred on December 13, 2024, as certified by the compensation committee of ATEN, resulting in 7,290 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on December 26, 2024 and an additional one-fourth (1/4) on each of the first and second anniversaries of December 13, 2024, subject to continued employment. 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