A10 Networks (ATEN) GC Robert Weber Exercises RSUs, 1,930 Shares Withheld

What Happened
Robert Scott Weber, General Counsel of A10 Networks (ATEN), had performance-based restricted stock units (RSUs) convert into common shares after performance conditions were certified. On May 14, 2026 he acquired 3,706 and 3,882 shares (total 7,588) via exercise/conversion of derivatives; on May 15, 2026 a total of 1,930 shares were disposed/withheld to satisfy tax liability at $27.00 per share, totaling $52,110. The underlying awards remain subject to further time-based vesting for remaining tranches.

Key Details

• Transaction dates: Conversion/exercise on 2026-05-14; tax withholding/disposition on 2026-05-15.
• Conversion amounts: 3,706 shares and 3,882 shares acquired (total 7,588).
• Tax withholding/disposal: 1,930 shares at $27.00 each = $52,110 (non‑discretionary withholding: 987 and 943 shares for two separate grants).
• Net increase in shares (conversion minus withholding): 5,658 shares added to beneficial ownership (based on reported transactions).
• Instruments & codes: M = exercise/conversion of derivative (performance RSUs); F = payment of tax liability via share withholding.
• Filing timeliness: Report filed 2026-05-15 for transactions on 2026-05-14–15 (appears timely).

Context

• These were performance-based RSUs that met specified stock-price performance hurdles; however, the grants are subject to time-based vesting (one-half vested on May 14, 2026 and the remainder vest in scheduled installments subject to continued employment).
• The 1,930-share disposition was for tax withholding, a routine administrative step, and not an open-market sale expressing a trading view.
• For retail investors, conversions/awards increase insider exposure to the company, while withholding for taxes is common and does not necessarily indicate confidence or concern.