O'DONNELL SHANNON 4

What Happened

• Shannon O'Donnell, Senior Vice President of Auburn National Bancorporation (AUBN), had 387 restricted stock units (RSUs vest) settle on March 10, 2026. As part of the settlement she received 7 dividend-equivalent shares and 273 net shares from the RSU vesting (total 280 shares issued). Separately, 114 shares were withheld by the issuer to cover tax withholding at $23.85 per share (114 x $23.85 = $2,719).

Key Details

• Transaction date: March 10, 2026 (Settlement Date); Form filed March 26, 2026 (late filing).
• Reported transaction codes: A = award/acquisition (7 dividend-equivalent shares); F = tax withholding (114 shares disposed/withheld).
• Withholding price used: $23.85 per share (Nasdaq close on settlement date); tax withholding value ≈ $2,719.
• Shares issued on Settlement Date: 273 net shares from RSU settlement + 7 dividend-equivalent shares = 280 shares issued to the reporting person.
• Filing timeliness: Form 4 was filed late (remark included).

Context

• This was not an open-market purchase or sale for investment purposes but the settlement of previously granted RSUs (previously reported on July 24, 2025). The 114-share "disposition" is a standard cashless tax withholding by the issuer to satisfy tax obligations, not an indicator of a voluntary sale.