InsiderSource
ADP

AUTOMATIC DATA PROCESSING INC

SEC CIK 8670
$216.31 +3.1% · 90 days
90-day buys
$745.7K
1 open-market
90-day sells
$286.2K
2 open-market
Net insider flow
+$459.5K
Net buying
Filings shown
82
Most recent
Revenue (FY2025)
$20.56B
+7.1% YoY
Net income (FY2025)
$4.08B
Reported
Total assets
$53.37B
Balance sheet
Source
SEC XBRL
From 10-K/10-Q
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At a glance

Over the last 90 days, insiders at ADP have bought a net $459.5K of stock (1 open-market buy vs 2 sells).

Largest recent trade: Bonarti Michael A sold $9.14M of ADP, trimming their stake 27%.

Most active filer: Bonarti Michael A, with 43 transactions among the recent filings shown.

Insider transaction history

Form 4 filings for ADP, newest first
View on SEC EDGAR ↗
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Nov 3, 2020 ΔOwn −3.9%

Bonarti Michael A sold $550.9K of ADP, trimming their stake 4%.

−$550.9K
3,455 sh @ $159
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Nov 3, 2020 ΔOwn −33%

Bonarti Michael A sold $4.51M of ADP, trimming their stake 33%.

−$4.51M
28,203 sh @ $160
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Oct 13, 2020 ΔOwn −1.1%

Bonarti Michael A sold $101.1K of ADP, trimming their stake 1%.

−$101.1K
674 sh @ $150
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ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Jan 3, 2020 ΔOwn −1.2%

Bonarti Michael A sold $104.2K of ADP, trimming their stake 1%.

−$104.2K
610 sh @ $171
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Jan 3, 2020 ΔOwn −7.4%

Bonarti Michael A sold $612.8K of ADP, trimming their stake 7%.

−$612.8K
3,607 sh @ $170
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Sep 4, 2019 ΔOwn −1.8%

Bonarti Michael A sold $202.8K of ADP, trimming their stake 2%.

−$202.8K
1,200 sh @ $169
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Sep 4, 2019 ΔOwn −5.1%

Bonarti Michael A sold $549.3K of ADP, trimming their stake 5%.

−$549.3K
3,272 sh @ $168
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Sep 4, 2019 ΔOwn −6.3%

Bonarti Michael A sold $643.6K of ADP, trimming their stake 6%.

−$643.6K
3,832 sh @ $168
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Sep 4, 2019 ΔOwn −10%

Bonarti Michael A sold $958.5K of ADP, trimming their stake 10%.

−$958.5K
5,739 sh @ $167
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Sep 4, 2019 ΔOwn −12%

Bonarti Michael A sold $1.06M of ADP, trimming their stake 12%.

−$1.06M
6,311 sh @ $168
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Sep 5, 2018 ΔOwn −5.4%

Bonarti Michael A sold $337.9K of ADP, trimming their stake 5%.

−$337.9K
2,334 sh @ $145
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Jul 3, 2018 ΔOwn −5.8%

Bonarti Michael A sold $314.7K of ADP, trimming their stake 6%.

−$314.7K
2,372 sh @ $133
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Jan 24, 2018 ΔOwn −15%

Bonarti Michael A sold $1.35M of ADP, trimming their stake 15%.

−$1.35M
11,013 sh @ $122
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Jan 24, 2018 ΔOwn −29%

Bonarti Michael A sold $2.19M of ADP, trimming their stake 29%.

−$2.19M
17,917 sh @ $122
ADP
AUTOMATIC DATA PROCESSING INC
Sell Bonarti Michael A · Corporate Vice President · Open-market sale · filed Jan 3, 2018 ΔOwn −8.3%

Bonarti Michael A sold $452.5K of ADP, trimming their stake 8%.

−$452.5K
3,900 sh @ $116
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About ADP insider activity

This page tracks every recent Form 4 filed for AUTOMATIC DATA PROCESSING INC with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.

The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.

Frequently asked questions

How often is ADP insider data updated?

Continuously. We read from SEC EDGAR, so new Form 4 filings for AUTOMATIC DATA PROCESSING INC usually appear here within minutes of being accepted by the SEC.

What does "net insider flow" mean?

It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.

Why do some rows show grants or option exercises instead of buys?

Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.

Is this investment advice?

No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.