Form 4 for ATEN A10 Networks, Inc.
Accepted 2026-05-15 17:54:13 ET · period of report 2026-05-14 · accession 0002085974-26-000010 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-05-15 17:54 | 2026-05-14 | ATEN | Caron Michelle Elizabeth | CFO | M - OptEx | $0.00 | +2,989 | 36.4K | +9% | $0 |
| D | 2026-05-15 17:54 | 2026-05-15 | ATEN | Caron Michelle Elizabeth | CFO | F - Tax | $27.00 | -748 | 35.6K | -2% | -$20.2K |
| D | 2026-05-15 17:54 | 2026-05-14 | ATEN | Caron Michelle Elizabeth | CFO | M - OptEx | $0.00 | -2,989 | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-05-14 | M | A | 2,989 | $0.00 | 36,374 | D | — | — | (F1) 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 second achievement date occurred on April 27, 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 14, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 27, 2026, subject to continued employment. These shares are reflected on Table I. |
| 2 | Common | Common Stock | 2026-05-15 | F | D | 748 | $27.00 | 35,626 | D | — | — | (F2) Shares automatically withheld, on a non-discretionary basis, for tax purposes related to a Feburary 12, 2026 performance-based restricted stock unit grant that vested on May 14, 2026. |
| 3 | Derivative | Performance-based Restricted Stock Units | 2026-05-14 | M | D | 2,989 | $0.00 | 0 | D | — · — to 2030-02-12 | 2,989 Common Stock | (F1) 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 second achievement date occurred on April 27, 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 14, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 27, 2026, subject to continued employment. These shares are reflected on Table I. (F1) 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 second achievement date occurred on April 27, 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 14, 2026 and an additional one-fourth (1/4) on each of the first and second anniversaries of April 27, 2026, subject to continued employment. These shares are reflected on Table I. |