ADP AUTOMATIC DATA PROCESSING INC Insider Trading

Director Robert Holmes Swan purchases $746K in ADP shares, extending six open-market buys in 36 months while stock trades well below 52-week highs.

Robert Holmes Swan, a director at Automatic Data Processing, purchased a substantial block of shares at a price that represents a significant discount to the company's 52-week high, adding to holdings that already exceeded four times his previous position from this single transaction. What distinguishes this trade is Swan's consistent pattern of open-market purchases—this is his sixth purchase in the past three years with zero open-market sales, indicating sustained conviction through both stronger and weaker periods. ADP remains a profitable company with solid revenue growth and a reasonable valuation multiple, providing a financially stable backdrop for the purchase. Swan's prior open-market purchases have demonstrated strong subsequent performance, with three-quarters of those trades showing gains within a quarter, suggesting his timing on similar moves has historically been sound. The combination of a director's repeated buying at discounted valuations, paired with his track record of well-timed entries, underscores why institutional investors track these transactions closely.

ADP director Rodriguez sells 4,086 shares across 12 transactions (2025-09-11/12) for $1.2M; current price $290.87 vs. blended sale average $295.26.

Director Carlos A Rodriguez executed 12 separate sales totaling 4,086 shares for $1,206,425.25 on September 11–12, 2025, at prices ranging from $293.04 to $298.58, for a blended average of $295.26. This represents a 16.1% reduction from his pre-transaction holdings of 25,361 shares. The current stock price of $290.87 is 11.0% below the 52-week high of $326.81 and has declined 3.6% over the past 30 days and 5.4% over 90 days. Rodriguez's same-ticker history shows 5 prior sells at ADP, including 4 additional sales on September 10, 2025 (the day immediately preceding this filing), though outcome measurement for these recent trades is not yet available. His cross-ticker track record spans 20 prior open-market sells across multiple tickers. Given ADP's strong fundamentals (P/E of 27.24, revenue growth of 7.1%, net income of $1,249,500,000.00), the transaction reflects a substantial reduction in a single director's exposure rather than a signal of deteriorating business conditions.

ADP VP Michael Bonarti sold 8.7K shares at $298.43 on 2025-09-09; stock now $298.03; his ADP sales have underperformed timing (0 of 5 prior well-timed at 90d).

Michael Bonarti, Corporate Vice President, sold 8,728 shares of ADP for $2,604,697.04 on 2025-09-09, reducing holdings by 9.8% to 80,531 shares. The sale occurred near current market price ($298.03 vs transaction price $298.43), and the stock is currently 8.8% below its 52-week high of $326.81. Notably, across his five prior ADP sales, none were well-timed on a 90-day basis—his prior sells generated positive 90-day returns of 0.1% to 12.9%, indicating the stock rose after each sale rather than fell. This sale continues a pattern where his ADP exit timing has not preceded subsequent declines, which is the benchmark for well-timed insider selling.

Director Carlos A Rodriguez sells 43,900 shares of ADP for $12,952,553.37 via 10b5-1 plan

Director Carlos A Rodriguez executed 10 separate sales totaling 43,900 shares for $12,952,553.37 across September 9–10, 2025, with a blended average price of $295.05. The sales reduced his holdings from 69,261 shares to 25,361 shares, representing a 63.4% reduction in his ADP position. Because this transaction is part of a pre-arranged 10b5-1 trading plan, the sales were scheduled rather than discretionary, removing any implication regarding executive judgment about current valuation or company prospects. The filing reflects execution of a predetermined divestiture schedule rather than a decision made in response to current market conditions.

ADP Director Carlos Rodriguez sold 12,056 shares for $3.6M across 9 transactions on 2025-09-05

Director Carlos A Rodriguez executed 9 separate sales totaling 12,056 shares for $3,582,031.95 at prices ranging from $294.32 to $302.45, representing a 32.2% reduction in his post-transaction holdings to 25,361 shares. The blended average transaction price of $297.12 sits near the current price of $298.43, and notably follows a pattern of five consecutive sell transactions on 2025-09-04 (the prior day), suggesting a sustained reduction in position rather than a single discretionary trade decision. With ADP trading at -8.7% from its 52-week high and his cross-ticker track record showing 0.00% well-timed rate on 20 prior sells (averaging +4.4% 30d and +8.9% 90d returns), there is no demonstrated pattern of selling ahead of declines; this large liquidation warrants observation against subsequent price movements to assess timing.

VP McGuire Don sold 13,599 ADP shares for $4.0M, reducing stake 43.5% to 17,684 shares

McGuire Don sold 13,599 shares of Automatic Data Processing at $296.57 on 2025-09-03, cutting his position by 43.5% from 31,283 shares to 17,684 shares. His prior five sales at ADP had 0 of 5 well-timed outcomes at the 90-day mark, meaning the stock rose after each prior sale, suggesting a pattern of selling too early. The current price of $295.97 is -9.4% from the 52-week high of $326.81, placing this sale closer to an intermediate weakness but not at a clear valuation inflection point for a company with $5.6B quarterly revenue, $1.2B net income, and 7.1% annual revenue growth. The sale is material in absolute terms but lacks a clear external catalyst (no earnings date in FACTS, no scheduled trading plan disclosed) that would distinguish it from routine portfolio management.

DeSilva (EVP) sold 4,614 shares of ADP at $296.57; stock down 9.4% in 90 days post-prior sales

DeSilva sold 4,614 shares (20.8% of pre-transaction holdings) on 2025-09-03, reducing his ADP position from 22,149 to 17,535 shares. His prior three ADP sales at this ticker, executed at favorable moments relative to 90-day price movement (average 90d return +6.4%), generated modest positive returns, suggesting disciplined execution historically. However, the broader technical backdrop shows ADP trading -9.4% from its 52-week high ($326.81), and the stock is down 9.4% over the past 90 days. This sale occurs in a context where the executive's prior timing pattern at this ticker (0 of 3 prior sells well-timed at 90-day mark) lacks evidence of prescience, making this transaction a routine portfolio rebalance rather than a distinctive insider signal.

ADP CEO Black Maria sold 23,605 shares (23.6K) for $7,041,744.09 via pre-arranged 10b5-1 plan on 2025-09-03

Black Maria, President & CEO of Automatic Data Processing, executed 20 separate sales totaling 23,605 shares for $7,041,744.09 on 2025-09-03 at prices ranging from $295.91 to $299.98, with a blended average of $298.32. The sales reduced her holdings from 99,766 shares to 76,161 shares, a 23.7% reduction in her pre-transaction position. This transaction is part of a pre-arranged 10b5-1 trading plan, indicating these sales were scheduled in advance and not discretionary trading decisions made in response to current market conditions. The large scale and multi-tranche execution structure suggests systematic portfolio management under the established plan.

Director Rodriguez sold 23,402 shares for $7.0M on 2025-09-03/04 via 10b5-1 plan

Carlos A Rodriguez, a Director at Automatic Data Processing Inc, executed 9 separate sales totaling 23,402 shares for $7,004,406.41 across September 3-4, 2025, at a blended average price of $299.31 per share. This transaction is part of a pre-arranged 10b5-1 trading plan, meaning it was scheduled in advance rather than discretionary. The sales reduced his holdings from 60,819 shares to 37,417 shares, representing a 38.5% reduction in his pre-transaction position. As a scheduled trade, this divestiture reflects only Rodriguez's predetermined plan, not a current market-driven decision.

ADP CEO Black Maria sells 7,721 shares for $2,315,777.23 across 4 transactions on 2025-09-02

Black Maria, President & CEO of Automatic Data Processing, executed 4 separate sales totaling 7,721 shares for $2,315,777.23 on 2025-09-02, reducing holdings from 107,487 shares to 99,766 shares (a 7.2% reduction). The blended average sale price of $299.93 occurred when the stock was trading near its current level of $298.86, shortly before a further 1.1% decline over 30 days and 8.4% decline over 90 days from the transaction date. Against his cross-ticker track record of 20 prior sells, the timing pattern shows 0 of 0 prior sells were well-timed at the 90-day mark; however, this specific transaction's timing cannot yet be assessed. The company maintains solid fundamentals with revenue of $5,553,000,000.00, net income of $1,249,500,000.00, and annual revenue growth of 7.1%, though the stock trades at a P/E of 27.98 near the lower end of its 52-week range. The concentration of four distinct transactions on a single date, combined with subsequent price weakness, merits attention to whether this represents a material shift in CEO positioning.