OCONNOR DEBORAH A 4

What Happened

• Deborah A. O'Connor, EVP and CFO of ACCO Brands (ACCO), had 104,599 performance-based derivative units convert/settle on 2026-03-10 and was granted additional derivative awards totaling 161,065 units on 2026-03-11 (total new awards/settlements = 265,664). As part of the settlement, 30,611 shares were surrendered/withheld to cover tax withholding at $3.63 per share for a cash value of $111,271. The awards were received/settled (not an open-market purchase or sale).

Key Details

• Transaction dates: 2026-03-10 (PSU settlement and tax withholding) and 2026-03-11 (additional grant).
• Actions reported: A = awards/grants (161,065 and 104,599 units), M = exercise/conversion of derivative (104,599), F = tax withholding (30,611 shares disposed at $3.63 each for $111,271).
• Price: Awarded/converted shares reported at $0.00 (awards), withheld shares valued at $3.63/share for tax withholding ($111,271).
• Shares owned after transaction: Not specified in the filing.
• Footnotes: F1 = PSUs earned over a three‑year performance period and eligible for settlement subject to continued employment; F2 = RSUs that convert to shares on March 11, 2029 if employment persists (subject to plan terms).
• Filing: Report covers transactions on 2026-03-10/11 and was filed with accession date 2026-03-12; no late filing flag indicated.

Context

• This filing reflects awards/settlements and a routine tax-withholding share surrender — not an open-market sale or a cash purchase. The 104,599 units were performance stock units (PSUs) that converted/settled; the 161,065 units are additional restricted/derivative awards. Withholding shares to cover taxes (code F) is common when awards vest or settle and does not by itself indicate a change in the insider’s view of the company.