A10 Networks, Inc. SEC Filings

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, Inc. files its annual report detailing 2025 performance, strategy and risks. The company provides secure application and network infrastructure for enterprises and service providers across on‑premises, hybrid cloud and cloud environments.

Revenue for 2025 was $290.6 million with a 79.3% gross margin and $42.1 million in net income, continuing multi‑year growth. As of June 30, 2025, non‑affiliate market value was about $1,377.6 million, and 71,724,984 shares were outstanding as of February 19, 2026.

Management highlights trends such as AI‑driven workloads, hybrid and multi‑cloud architectures, and escalating cybersecurity threats, positioning its ACOS‑based platform and A10 Defend security portfolio to address DDoS, application and API protection. In February 2025, A10 acquired assets and key personnel of ThreatX Protect to expand cloud‑delivered web application and API security.

The report outlines concentrated customer and channel exposure, intense competition, supply‑chain dependence on a few manufacturers and component sources, international expansion risks, and evolving deployment and payment models as key risk factors that could affect future results.

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.

ATEN insider Dhrupad Trivedi has filed a Form 144 indicating an intention to sell 33,334 shares of common stock through Morgan Stanley Smith Barney LLC on the NYSE. The shares were acquired on 02/01/2024 as performance and restricted stock from the issuer.

The filing also reports that Trivedi sold 33,333 common shares on 02/11/2026 for gross proceeds of 689,589.77 and another 33,333 shares on 02/12/2026 for gross proceeds of 685,379.81. Shares outstanding were 71,726,487 at the time of the notice.