Caron Michelle Elizabeth 4
4 · A10 Networks, Inc. · Filed May 6, 2026
Research Summary
AI-generated summary of this filing
A10 Networks (ATEN) CFO Caron Exercises RSUs, Shares Sold for Taxes
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.
Insider Transaction Report
Form 4
Caron Michelle Elizabeth
Chief Financial Officer
Transactions
- Exercise/Conversion
Common Stock
[F1]2026-05-05+13,706→ 33,390 total - Exercise/Conversion
Common Stock
[F2]2026-05-05+2,989→ 36,379 total - Tax Payment
Common Stock
[F3]2026-05-06$27.13/sh−2,994$81,227→ 33,385 total - Exercise/Conversion
Performance-based Restricted Stock Units
[F1]2026-05-05−13,706→ 0 totalExp: 2029-09-30→ Common Stock (13,706 underlying) - Exercise/Conversion
Performance-based Restricted Stock Units
[F2]2026-05-05−2,989→ 2,989 totalExp: 2030-02-12→ Common Stock (2,989 underlying)
Footnotes (3)
- [F1]Performance-Based Restricted Stock Units were previously reported on October 2, 2025, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of a specified level of the volume weighted average closing price of a share of ATEN common stock during any one hundred (100) day trading period between September 30, 2025 and September 30, 2029. The achievement date occurred on April 16, 2026, as certified by the compensation committee of ATEN, resulting in 13,706 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 5, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 16, 2026, subject to continued employment. These shares are reflected on Table I.
- [F2]Performance-Based Restricted Stock Units that were previously reported on February 13, 2026, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 12, 2026 and February 12, 2030. The first achievement date occurred on April 22, 2026, as certified by the compensation committee of ATEN, resulting in 2,989 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on May 5, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 22, 2026, subject to continued employment. These shares are reflected on Table I.
- [F3]Includes 2,458 shares and 536 shares automatically withheld, on a non-discretionary basis, for tax purposes related to a September 30, 2025 performance-based restricted stock unit grant and a February 12, 2026 performance-based restricted stock unit grant, respectively, each that vested on May 5, 2026.
Signature
/s/ Jill Osato, as Attorney-in-Fact|2026-05-06