// company-profile
Automatic Data Processing Inc
ADPExchangeNasdaqSectorServices-Computer Processing & Data PreparationInc.DEFilings225Insiders28
// api This Automatic Data Processing Inc insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Automatic Data Processing Inc insiders filed 3 Form 4 transactions, none of which were open-market purchases or sales.
- Most active insider: SWAN ROBERT HOLMES with 1 transaction totaling $746K.
- Largest single purchase: $746K by SWAN ROBERT HOLMES on May 7, 2026.
- 100% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Automatic Data Processing Inc as of 2026-03-31
Total reported AUM
$64.86B
QoQ change
-12.3%
Reporting period
2026-03-31
#1
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$5.31B
26.2M shares
#2
STATE STREET CORP
CIK 93751
$3.96B
19.3M shares
#3
BlackRock, Inc.
CIK 2012383
$2.88B
14.2M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 8, 2026 | Michaud Brian L. | ADP | Sale10b5 | 848 | $212.13 | $180K |
| May 7, 2026 | SWAN ROBERT HOLMES | ADP | Purchase10b5 | 3,619 | $206.05 | $746K |
| Apr 14, 2026 | D'Ambrosio Christopher | ADP | Sale10b5 | 543 | $195.74 | $106K |
| Mar 16, 2026 | D'Ambrosio Christopher | ADP | Sale10b5 | 543 | $208.45 | $113K |
| Feb 17, 2026 | D'Ambrosio Christopher | ADP | Sale10b5 | 543 | $212.43 | $115K |
45 more transactions hidden
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