ADP CEO & Director Maria Black Files Form 144 to Sell $8.44M in Common Stock

Form 144 Filing Analysis: Automatic Data Processing Inc ($ADP)

Executive Summary

• Filer: Maria Black, Officer and Director (President & CEO)
• Proposed Sale Size: 29,810 common shares
• Aggregate Value: $8,436,230.00
• Approximate Sale Date: September 2, 2026
• Broker: Fidelity Brokerage Services LLC

Key Details & Context

1. Origin of Shares: The shares to be sold were acquired via restricted stock vesting on September 1, 2026, as part of executive compensation.
2. Trading Plan: The proposed sale is executed pursuant to a pre-scheduled Rule 10b5-1 trading plan adopted on September 4, 2025.
3. Dilution & Scale: The 29,810 shares represent a minuscule fraction (less than 0.01%) of the 397,262,737 shares outstanding.
4. Past Transactions: No other securities sales were reported for the past three months under this filing.

Market Impact Assessment

• Significance: High based on executive level (CEO/Director) and transaction dollar amount ($8.44M).
• Contextual Nuance: Because the transaction originates from newly vested restricted stock and is executed under a pre-established 10b5-1 trading plan adopted roughly one year prior, it is indicative of routine executive compensation liquidity rather than discretionary sentiment on company fundamentals.