A Form 4 filed on September 4, 2026, disclosed that Joseph DeSilva, Executive Vice President at Automatic Data Processing Inc (NASDAQ:ADP), sold 631 shares of common stock on September 3, 2026, under a pre-established Rule 10b5-1 trading plan.

Key Highlights

  • Reporting person: Joseph DeSilva, Executive Vice President at Automatic Data Processing Inc
  • Transaction: Disposition (code S) of 631 shares of common stock on September 3, 2026
  • Sale price: $282.87 per share
  • Remaining ownership: 18,824.188 shares of common stock held directly following the transaction
  • Trading plan: Transaction effected pursuant to a Rule 10b5-1 trading plan adopted by DeSilva in September 2025
  • Filing signed: September 4, 2026, by David Kwon under power of attorney on file

DeSilva Share Sale Details and 10b5-1 Plan Disclosure

According to the filing, Joseph DeSilva, identified as an Executive Vice President of Automatic Data Processing Inc, disposed of 631 shares of the company's common stock on September 3, 2026, at a price of $282.87 per share. The transaction is recorded with code "S" in Table I of the Form 4, indicating a sale on the open market. The filing notes that the form is checked to indicate the transaction was made pursuant to a Rule 10b5-1 plan.

The filing states in its explanation of responses that "the transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2025." Following the reported sale, DeSilva's direct beneficial ownership in Automatic Data Processing common stock stood at 18,824.188 shares, according to the filing. No derivative securities were reported in Table II of the form.

The Form 4 was filed by one reporting person and signed on September 4, 2026, by David Kwon under a power of attorney on file. DeSilva's address is listed as One ADP Boulevard, Roseland, New Jersey 07068. No amendment date was provided, indicating this is an original filing.

What Was Disclosed

The filing reported a single open-market sale of 631 shares of Automatic Data Processing common stock by Executive Vice President Joseph DeSilva at $282.87 per share on September 3, 2026, executed under a Rule 10b5-1 plan adopted in September 2025, leaving him with 18,824.188 shares directly held.