Dayforce Merger Proxy Update

This filing transmits Definitive Additional Materials urging stockholders to vote on the proposed merger with Thoma Bravo, L.P. ahead of the November 12, 2025 Special Meeting.

Key Investor Points:

• Meeting Focus: Approval of the Thoma Bravo merger.
• Board Recommendation: The Dayforce Board of Directors unanimously recommends voting FOR the Merger.
• Proxy Advisor Support: Both ISS and Glass Lewis have affirmed the Board’s recommendation to vote FOR the transaction.
• Action Required: Stockholders are strong