Kintiroglou Achilles B. 4

What Happened
Achilles B. Kintiroglou, Senior Vice President and General Counsel of AdvanSix Inc. (ASIX), had 8,008 shares withheld to satisfy tax withholding obligations tied to restricted stock units that vested on February 28, 2026. The shares were valued at $17.47 each, for a total of $139,900. This transaction is a tax-withholding/net-share settlement (reported with code F), a routine disposal rather than an open-market sale.

Key Details

• Transaction date: February 28, 2026
• Withheld shares: 8,008 at $17.47 per share — total value $139,900
• Transaction code: F (shares withheld to satisfy tax withholding on vested RSUs)
• Footnote: Shares were withheld to satisfy tax obligations related to RSUs that vested on Feb 28, 2026.
• Filing date: March 3, 2026 — filed within required Form 4 timing (timely)
• Shares owned after transaction: not specified in the provided filing

Context
This was a net share settlement to cover taxes on vested RSUs, not an open-market sale; such withholding is routine and generally does not signal insider sentiment. For investors, outright purchases tend to convey more direct bullish intent than tax-withholding disposals.