Caron Michelle Elizabeth 4

What Happened

• Caron Michelle Elizabeth, CFO of A10 Networks (ATEN), had 16,695 performance-based restricted stock units (13,706 + 2,989) convert to shares after performance conditions were certified. The conversion showed an acquisition at $0.00 per share (i.e., no cash exercise price). To satisfy tax withholding, 2,994 shares were disposed (withheld) at $27.13 per share, generating $81,227 in proceeds. Net new shares to her holdings from this event = 16,695 − 2,994 = 13,701 shares.

Key Details

• Transaction dates: conversions dated May 5, 2026; tax withholding/disposition reported May 6, 2026.
• Prices/values: conversion/acquisition price $0.00; withholding/disposition at $27.13/share for total $81,227.
• Net change: +13,701 shares added to her holdings after withholding. (Prior holdings not shown in the excerpt.)
• Footnotes: F1/F2 — these were performance-based RSUs that met VWAP performance targets (certified April 16 and April 22, 2026) but remain subject to time-based vesting: 1/2 vested May 5, 2026 and the remainder vests in two future installments, subject to continued employment. F3 — 2,458 and 536 shares (total 2,994) were automatically withheld for taxes (non‑discretionary).
• Filing: Report filed May 6, 2026 for transactions reported May 5, 2026 — appears timely.

Context

• These were performance-based RSU conversions, not an open-market purchase or voluntary sale; the disposition is tax withholding (code F), a routine administrative action to satisfy taxes on vesting.
• The units converted because performance targets were met; however, some shares remain subject to future time-based vesting and continued employment, so not all converted shares are fully free of restrictions yet.