Weber Robert Scott 4

4 · A10 Networks, Inc. · Filed Feb 18, 2025

Form 4

Period: 2025-02-13

General Counsel

Transactions

Exercise/Conversion
Common Stock
2025-02-13+5,956→ 49,443 total
Tax Payment
Common Stock
2025-02-14$21.68/sh−1,512$32,780→ 47,931 total
Exercise/Conversion
Performance-based Restricted Stock Units
2025-02-13−5,956→ 5,956 total
Exp: 2027-02-21→ Common Stock (5,956 underlying)

Footnotes (2)

[F1]Performance-Based Restricted Stock Units that were previously reported on February 22, 2023, 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 21, 2023 and February 21, 2027. The first achievement date occurred on January 31, 2025, as certified by the compensation committee of ATEN, resulting in 5,956 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 February 13, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 31, 2025, subject to continued employment. These shares are reflected on Table I.
[F2]Shares automatically withheld, on a non-discretionary basis, for tax purposes related to a February 21, 2023 performance restricted stock unit grant that vested on February 13, 2025.

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