Every Form 4 that A10 NETWORKS INC (ATEN) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow ATEN and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full ATEN filings page.
A10 Networks, Inc. (ATEN) director Dana Elizabeth Wolf reported selling 2,652 shares of common stock on 2026-08-25 at $25.65 per share in an open-market or private transaction. After this sale, Wolf directly holds 57,409 shares of A10 Networks common stock. The sale was effected under a Rule 10b5-1 trading plan adopted on May 15, 2026.
A10 Networks, Inc. General Counsel Robert Scott Weber reported selling 14,086 shares of common stock on August 11, 2026 in an open-market transaction at a weighted average price of $27.86 per share, with individual sale prices ranging from $27.55 to $28.46. The sales were effected pursuant to a Rule 10b5-1 trading plan adopted on May 9, 2026, and Weber now directly holds 50,586 shares of A10 Networks common stock.
A10 Networks, Inc. General Counsel Robert Scott Weber reported a routine tax-related share disposition. On July 6, 2026, 1,897 shares of common stock were withheld at $36.30 per share to cover taxes on a restricted stock unit grant that vested on July 5, 2026. After this non-discretionary withholding, he directly holds 64,672 shares, which include 1,042 shares acquired through the company’s Employee Stock Purchase Plan on May 31, 2026.
A10 Networks, Inc. Chief Financial Officer Michelle Elizabeth Caron filed an amended insider report to correct a prior tax-withholding entry. The amendment updates the number of shares withheld and the price used for shares retained to cover taxes on a performance-based RSU grant that vested on May 14, 2026.
The corrected record shows 760 shares of common stock were withheld on a non-discretionary basis at $28.03 per share for tax purposes. After this correction, Caron directly owns 35,614 shares of A10 Networks common stock as of May 15, 2026.
A10 Networks, Inc. Chief Executive Officer Dhrupad Trivedi filed an amended insider report to correct the share price used in a prior tax-withholding entry. The amendment reflects 32,858 shares of common stock withheld on a non-discretionary basis at $28.03 per share to satisfy taxes on performance-based restricted stock units that vested on May 14, 2026. After this routine tax-withholding disposition, Trivedi directly holds 887,847 shares of A10 Networks common stock.
A10 Networks, Inc. General Counsel Robert Scott Weber filed an amended insider report updating a prior tax-related share disposition. The filing corrects the price per share reported for 1,930 shares of common stock that were withheld on a non-discretionary basis to cover taxes tied to performance-based restricted stock units that vested on May 14, 2026. These RSUs were granted on February 6, 2025 and February 12, 2026. Following the withholding, Weber directly holds 65,527 shares of A10 Networks common stock.
A10 Networks, Inc. Chief Financial Officer Michelle Elizabeth Caron reported routine equity compensation activity involving performance-based restricted stock units. On May 14, 2026, she exercised performance-based RSUs into 2,989 shares of common stock at $0.00 per share, following achievement of specified stock price performance conditions. These shares remain subject to time-based vesting, with portions vesting on May 14, 2026 and on the first and second anniversaries of April 27, 2026, contingent on continued employment. On May 15, 2026, 748 shares of common stock were automatically withheld at $27.00 per share to cover tax obligations, a non-discretionary tax-withholding disposition rather than an open-market sale. After these transactions, she directly holds 35,626 shares of A10 Networks common stock.
A10 Networks, Inc. CEO Dhrupad Trivedi reported routine equity compensation activity. On May 14, 2026, he exercised performance-based restricted stock units covering 129,164 shares of common stock. On May 15, 2026, 32,858 shares were automatically withheld at $27.00 per share to cover taxes, leaving him with 887,847 common shares held directly.
A10 Networks, Inc. General Counsel Robert Scott Weber reported routine equity compensation activity involving performance-based restricted stock units (RSUs). On May 14, 2026, he exercised RSUs that had met performance conditions, converting 3,706 and 3,882 performance-based RSUs into an equal number of common shares at a $0.00 exercise price. These awards vest over time, with one-half vesting on May 14, 2026 and the remaining quarters on the first and second anniversaries of the applicable achievement dates, conditioned on continued employment. On May 15, 2026, 1,930 common shares were automatically withheld at $27.00 per share to satisfy tax obligations related to the RSU vesting. After these transactions, Weber directly holds 65,527 shares of A10 Networks common stock, indicating he retains the vast majority of his equity position following this compensation-related event.
A10 Networks director Eric Singer sold shares in the company. On this Form 4, he reported an open-market sale of 24,698 shares of A10 Networks common stock at a weighted average price of $27.21 per share, with individual sale prices ranging from $26.88 to $27.41. After the transaction, he directly holds 68,806 shares.
A10 Networks, Inc. Chief Executive Officer Dhrupad Trivedi reported performance-based equity vesting and related tax-withholding transactions in company stock. On May 5, 2026, he exercised performance-based restricted stock units that had met performance conditions, converting them into shares of common stock.
Footnotes explain that 63,406 units from a February 6, 2025 grant and 65,753 units from a February 12, 2026 grant satisfied specified volume weighted average price targets in April 2026. These shares remain subject to time-based vesting, with one-half vesting on May 5, 2026 and one-fourth on each of the first and second anniversaries of their April 2026 achievement dates, subject to continued employment.
On May 6, 2026, 32,858 shares of common stock were automatically withheld on a non-discretionary basis for tax purposes at $27.13 per share. After these transactions, Trivedi directly holds 791,536 shares of A10 Networks common stock.
A10 Networks, Inc. General Counsel Robert Scott Weber reported routine equity compensation activity. On May 5, he exercised performance-based restricted stock units that convert into 3,882 and 3,707 shares of common stock after specified stock price performance conditions were certified as achieved.
These units remain subject to time-based vesting, with one-half scheduled to vest on May 5, 2026 and the remaining quarters on the first and second anniversaries of the respective April 2026 achievement dates, assuming continued employment. On May 6, 1,930 shares were automatically withheld at $27.13 per share to cover taxes, and he now holds 59,869 common shares directly.
A10 Networks, Inc. Chief Financial Officer Michelle Elizabeth Caron reported routine equity compensation activity involving performance-based restricted stock units and related tax withholding. On May 5, 2026, she exercised awards covering 16,695 performance-based RSUs, each converting into one share of A10 common stock after achieving specified stock price performance conditions certified in April 2026.
These RSUs remain subject to time-based vesting, with specified portions vesting on May 5, 2026 and on the first and second anniversaries of the April 2026 achievement dates, contingent on continued employment. On May 6, 2026, 2,994 shares of common stock were automatically withheld at $27.13 per share to cover tax obligations, a non-discretionary tax-withholding disposition rather than an open-market sale. After these transactions, Caron directly held 33,385 shares of A10 common stock.
CHUNG PETER Y reported acquisition or exercise transactions in this Form 4 filing.
A10 Networks, Inc. reported that director Peter Y. Chung received a grant of 7,233 restricted stock units (RSUs) of Common Stock as part of the director compensation program. These RSUs vest on the earlier of April 22, 2027 or the company’s next Annual Meeting.
Upon vesting, the RSUs will settle in an equal number of A10 Networks common shares, provided Mr. Chung remains in continuous service through the vesting date. After this grant, 207,298 shares and RSUs are held in his name for the benefit of Summit Partners, L.P., and he disclaims beneficial ownership except for his pecuniary interest.
Wolf Dana Elizabeth reported acquisition or exercise transactions in this Form 4 filing.
A10 Networks director Dana Elizabeth Wolf received an equity award in the form of restricted stock units. On April 22, 2026, she was granted 7,233 shares of A10 Networks, Inc. common stock represented by RSUs at no cash price. Following this grant, she directly holds 60,061 common shares.
The RSUs will vest on the earlier of April 22, 2027 or the date of A10 Networks’ next annual meeting, provided she continues to serve through the applicable vesting date.
Singer Eric reported acquisition or exercise transactions in this Form 4 filing.
A10 Networks, Inc. director Eric Singer received a grant of 7,233 shares of Common Stock in the form of Restricted Stock Units. The RSUs will vest on the earlier of April 22, 2027, or the company’s next annual meeting, if he continues serving through that date. Following this award, he holds 93,504 shares directly.
Braham Tor reported acquisition or exercise transactions in this Form 4 filing.
A10 Networks, Inc. director Braham Tor reported receiving an equity award of 7,233 shares of Common Stock in the form of Restricted Stock Units. The award carried a price of $0.00 per share, indicating a compensation-related grant rather than an open-market purchase.
These RSUs will vest on the earlier of April 22, 2027 or the date of A10 Networks’ next Annual Meeting, provided Tor continues to serve through that vesting date. Following this grant, Tor directly holds a total of 192,812 shares of A10 Networks common stock.
A10 Networks, Inc. Chief Executive Officer Dhrupad Trivedi reported a tax-related share disposition. On February 28, 2026, 10,101 shares of common stock were automatically withheld on a non-discretionary basis to cover taxes tied to performance-based restricted stock units that vested the same day. These RSUs were originally granted on February 21, 2023. Following this tax-withholding disposition, Trivedi directly beneficially owns 695,235 shares of A10 Networks common stock.
A10 Networks, Inc. reported that General Counsel Robert Scott Weber had 757 shares of common stock automatically withheld at $19.26 per share to cover taxes on performance-based restricted stock units granted on February 21, 2023 and vested on February 28, 2026. After this non-discretionary tax-withholding disposition, he directly holds 54,210 shares of common stock.
A10 Networks Chief Executive Officer Dhrupad Trivedi reported a tax-related share disposition linked to vesting equity awards. On this Form 4, 8,261 shares of common stock were automatically withheld at a price of $18.99 per share to cover taxes on performance-based restricted stock units that vested on February 24, 2026.
These units were originally granted on January 25, 2022. After this non-discretionary tax-withholding disposition, Trivedi directly holds 705,336 shares of A10 Networks common stock.
A10 Networks CEO Dhrupad Trivedi reported planned stock sales and new equity awards. On February 11–13, 2026, he sold three blocks of common stock totaling 100,000 shares in open-market transactions at weighted average prices around $20.55–$20.69 per share, under a Rule 10b5-1 trading plan adopted on September 12, 2025. After these sales, he held 713,597 common shares directly.
On February 12, 2026, he also received 131,516 restricted stock units and a separate grant of 131,516 performance-based restricted stock units. The time-based RSUs vest in three equal annual installments starting February 1, 2026, while the PSUs vest based on A10’s volume-weighted average closing price performance between February 12, 2026 and February 12, 2030, along with continued employment.
Caron Michelle Elizabeth reported acquisition or exercise transactions in this Form 4 filing.
A10 Networks, Inc. reported that its Chief Financial Officer, Caron Michelle Elizabeth, received new equity awards on February 12, 2026. She was granted 5,978 restricted stock units (RSUs) of common stock, bringing her directly owned common shares to 19,684. One-third of these RSUs will vest on each of the first three anniversaries of the February 1, 2026 vesting start date, as long as she remains employed. She was also granted 5,978 performance-based restricted stock units (PSUs), each tied to one share of common stock. These PSUs vest only if A10’s stock achieves specified volume-weighted average price levels during any 100-day trading period between February 12, 2026 and February 12, 2030, followed by time-based vesting linked to continued employment.
Weber Robert Scott reported acquisition or exercise transactions in this Form 4 filing.
A10 Networks General Counsel Robert Scott Weber received new equity awards tied to company stock. On February 12, 2026, he was granted 7,413 shares of common stock at $0 per share in the form of restricted stock units, bringing his directly held common shares to 54,967. He was also granted 7,413 performance-based restricted stock units, each representing a right to one common share, for a total of 7,413 derivative securities held directly.
Time-based RSUs vest in three equal annual installments starting on February 1, 2027, as long as he continues serving through each vesting date. The performance-based units vest only if A10’s volume-weighted average share price reaches specified levels during any 100-day trading period between February 12, 2026 and February 12, 2030, and further require continued employment through the applicable vesting dates.
Khoury Sheen George reported acquisition or exercise transactions in a Form 4 filing for ATEN. The filing lists transactions totaling 15,542 shares. Following the reported transactions, holdings were 7,771 shares.
A10 Networks, Inc. Chief Executive Officer and director Dhrupad Trivedi reported an automatic share withholding related to equity compensation. On February 10, 2026, 8,261 shares of common stock were disposed of at $20.92 per share to cover tax obligations on performance-based restricted stock units granted on January 25, 2022 and vesting on February 10, 2026.
After this tax-withholding disposition, Trivedi directly beneficially owns 682,081 shares of A10 Networks common stock. The transaction was coded as a tax-liability payment using shares (Code F), rather than an open-market sale.
A10 Networks General Counsel Robert Scott Weber reported a tax-related share withholding. On February 10, 2026, 1,897 shares of common stock were automatically withheld on a non-discretionary basis to cover taxes tied to performance-based restricted stock units granted on July 1, 2022, which vested that day. Following this withholding, he directly beneficially owns 47,554 shares of A10 Networks common stock.
A10 Networks (ATEN) General Counsel Robert Scott Weber reported routine share withholding for taxes tied to vesting stock awards. On January 31, 2026, 836 shares of common stock were automatically withheld at $17.44 per share in connection with performance-based restricted stock units granted on February 21, 2023 that vested that day.
On February 1, 2026, an additional 4,614 shares were automatically withheld at $17.44 per share for tax obligations related to restricted stock units granted on February 21, 2023, January 30, 2024 and February 6, 2025, which vested on February 1, 2026. After these non-discretionary tax withholdings, Weber directly held 49,451 shares of A10 Networks common stock.
A10 Networks, Inc. chief executive Dhrupad Trivedi reported automatic share withholding for taxes tied to previously granted stock awards. On January 31, 2026, 10,102 shares of common stock were withheld at $17.44 per share from performance-based restricted stock units that vested that day.
On February 1, 2026, a further 61,945 shares were automatically withheld at $17.44 per share from restricted stock units granted in 2023, 2024, and 2025 that vested on that date. After these non-discretionary tax withholdings, Trivedi directly held 690,342 shares of A10 Networks common stock.
A10 Networks, Inc. Chief Executive Officer and director Dhrupad Trivedi reported an automatic tax-withholding transaction in company common stock. On January 15, 2026, 13,106 shares of common stock were withheld at a price of $17.58 per share to cover taxes related to a performance restricted stock unit grant dated January 30, 2024 that vested on that date. After this withholding, Trivedi beneficially owned 762,389 shares of A10 Networks common stock directly.
A10 Networks General Counsel reports routine tax withholding on vested stock units. On January 15, 2026, General Counsel Robert Scott Weber had 1,024 shares of common stock automatically withheld at a price of $17.58 per share to cover taxes on a performance restricted stock unit grant originally awarded on January 30, 2024 and vesting on January 15, 2026. After this withholding, Weber beneficially owned 54,901 shares of A10 Networks common stock directly.
A director and Chief Executive Officer of A10 Networks, Inc. reported an insider stock transaction in the company’s common stock. On December 15, 2025, 12,620 shares were withheld at a price of $18.12 per share, identified as a tax-related transaction tied to a restricted stock unit grant from January 30, 2024 that vested on December 13, 2025. After this withholding, the reporting person directly beneficially owns 775,495 shares of A10 Networks common stock.
A10 Networks’ General Counsel reported routine changes in personal stock ownership. The filing shows a bona fide gift of 600 shares of common stock to a tax-exempt public charity on 12/12/2025, recorded at $0 per share.
On 12/15/2025, 925 shares were automatically withheld at $18.12 per share to cover taxes related to a restricted stock unit grant that vested on December 13, 2025. After these transactions, the officer directly owns 55,925 shares of A10 Networks common stock, including 1,437 shares previously acquired through the company’s employee stock purchase plan.
A10 Networks (ATEN) Chief Financial Officer Michelle Caron reported grants dated 09/30/2025 totaling 13,706 shares in two award types: restricted stock units and performance-based restricted stock units. The restricted stock units vest in four equal annual installments starting on the vesting commencement date of 10/05/2025, provided continued service. The performance-based RSUs (PSUs) each represent a contingent right to one share and vest only if a specified volume-weighted average closing price milestone is achieved during any 100-day period between 09/30/2025 and 09/30/2029, then subject to continued employment with vesting in three installments: 50% within 30 days of milestone achievement and two additional 25% installments on the first and second anniversaries of achievement. The Form 4 was signed by an attorney-in-fact on 10/02/2025.