Weber Robert Scott 4/A

What Happened

• Robert Scott Weber, General Counsel of A10 Networks, had 1,930 shares disposed (withheld) to satisfy tax withholding related to performance-based RSU vesting. The shares were reported at $28.03 each, for a total of $54,098. This is a routine tax-withholding disposition rather than an open-market sale for investment purposes.

Key Details

• Transaction date: 2026-05-15
• Transaction type/code: Payment of exercise price or tax liability (F) — shares withheld/ disposed
• Price and value: 1,930 shares × $28.03 = $54,098
• Shares owned after transaction: Not reported in this amended filing
• Footnote: This is an amended Form 4 (filed to correct the price reported in Column 4). Withholding was non-discretionary and related to performance-based RSU grants dated Feb 6, 2025 and Feb 12, 2026 that vested on May 14, 2026
• Filing timeliness: Amended filing; original Form 4 was filed May 15, 2026 and this amendment corrects the reported price

Context

• Tax withholding on vested RSUs (code F) is a common, routine transaction and does not necessarily indicate the insider’s view on the company’s prospects. The shares were withheld to cover tax obligations from vested performance-based restricted stock units, effectively a cashless/withholding settlement.