Weber Robert Scott 4
4 · A10 Networks, Inc. · Filed May 15, 2026
Research Summary
AI-generated summary of this filing
A10 Networks (ATEN) GC Robert Weber Exercises RSUs, 1,930 Shares Withheld
What Happened
Robert Scott Weber, General Counsel of A10 Networks (ATEN), had performance-based restricted stock units (RSUs) convert into common shares after performance conditions were certified. On May 14, 2026 he acquired 3,706 and 3,882 shares (total 7,588) via exercise/conversion of derivatives; on May 15, 2026 a total of 1,930 shares were disposed/withheld to satisfy tax liability at $27.00 per share, totaling $52,110. The underlying awards remain subject to further time-based vesting for remaining tranches.
Key Details
- Transaction dates: Conversion/exercise on 2026-05-14; tax withholding/disposition on 2026-05-15.
- Conversion amounts: 3,706 shares and 3,882 shares acquired (total 7,588).
- Tax withholding/disposal: 1,930 shares at $27.00 each = $52,110 (non‑discretionary withholding: 987 and 943 shares for two separate grants).
- Net increase in shares (conversion minus withholding): 5,658 shares added to beneficial ownership (based on reported transactions).
- Instruments & codes: M = exercise/conversion of derivative (performance RSUs); F = payment of tax liability via share withholding.
- Filing timeliness: Report filed 2026-05-15 for transactions on 2026-05-14–15 (appears timely).
Context
- These were performance-based RSUs that met specified stock-price performance hurdles; however, the grants are subject to time-based vesting (one-half vested on May 14, 2026 and the remainder vest in scheduled installments subject to continued employment).
- The 1,930-share disposition was for tax withholding, a routine administrative step, and not an open-market sale expressing a trading view.
- For retail investors, conversions/awards increase insider exposure to the company, while withholding for taxes is common and does not necessarily indicate confidence or concern.
Insider Transaction Report
Form 4
Weber Robert Scott
General Counsel
Transactions
- Exercise/Conversion
Common Stock
[F1]2026-05-14+3,706→ 63,575 total - Exercise/Conversion
Common Stock
[F2]2026-05-14+3,882→ 67,457 total - Tax Payment
Common Stock
[F3]2026-05-15$27.00/sh−1,930$52,110→ 65,527 total - Exercise/Conversion
Performance-based Restricted Stock Units
[F1]2026-05-14−3,706→ 0 totalExp: 2030-02-12→ Common Stock (3,706 underlying) - Exercise/Conversion
Performance-based Restricted Stock Units
[F2]2026-05-14−3,882→ 0 totalExp: 2029-02-06→ Common Stock (3,882 underlying)
Footnotes (3)
- [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 3,706 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 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.
- [F2]Performance-Based Restricted Stock Units were previously reported on February 10, 2025, 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 6, 2025 and February 6, 2029. The second achievement date occurred on May 6, 2026, as certified by the compensation committee of ATEN, resulting in 3,882 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 May 6, 2026, subject to continued employment. These shares are reflected on Table I.
- [F3]Includes 987 shares and 943 shares automatically withheld, on a non-discretionary basis, for tax purposes related to a February 6, 2025 performance-based restricted stock unit grant and a February 12, 2026 performance-based restricted stock unit grant, respectively, each that vested on May 14, 2026.
Signature
/s/ Jill Osato, Attorney-in-fact|2026-05-15