ADP

AUTOMATIC DATA PROCESSING INC

NasdaqTechnologyServices-Computer Processing & Data Preparation

Insider activity for last month from 08/04 to 09/04. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.

Latest filingSep 03, 2026Most recent Form 4
Total buying$00 buys
Total selling$1.14B19 sells
Net open-market-$1.14B14 insiders
Open-market mix
Buy vs sell distribution by transaction count
19 transactions
0 buys0%·100%19 sells

Insider activity report

Monthly open-market purchase and sale counts
Buys Sells
20100-10-20transactionsAug 2026 sells: 2 transactions · $25.7M2AugSep 2026 sells: 17 transactions · $1.11B17Sep

Transaction codes

By Form 4 transaction code in selected period
48transactions
  • S · Open-market sells · dominant19 · 40%
  • F · Tax withholding14 · 29%
  • A · Grants / awards13 · 27%
  • M · Option exercise2 · 4%

Activity by reported role

A joint filing can contribute to multiple roles
64transactions
  • CV · dominant17 · 27%
  • Chief executive officer16 · 25%
  • PRES16 · 25%
  • EV8 · 13%
  • Chief financial officer2 · 3%
  • CMO2 · 3%
  • VP2 · 3%
  • Director1 · 2%

Distinct insiders active

Reporting-owner CIKs by month · peak Sep 2026 (14)
Aug 2026Sep 2026
16distinct insiders in 2 months

Reported Holdings After

Separated by insider, security, and ownership type
Black MariaCommon Stock · Direct
141.6k80.6kSep 01, 2026 · 110,434.172 shares owned afterSep 01, 2026 · 141,649.634 shares owned afterSep 02, 2026 · 108,795.172 shares owned afterSep 02, 2026 · 91,215.172 shares owned afterSep 02, 2026 · 110,220.172 shares owned afterSep 02, 2026 · 109,964.172 shares owned afterSep 02, 2026 · 109,405.172 shares owned afterSep 02, 2026 · 101,837.172 shares owned afterSep 02, 2026 · 98,939.172 shares owned afterSep 02, 2026 · 80,624.172 shares owned afterSep 02, 2026 · 108,095.172 shares owned afterSep 02, 2026 · 107,335.172 shares owned afterSep 02, 2026 · 106,549.172 shares owned afterSep 02, 2026 · 105,531.172 shares owned afterSep 02, 2026 · 104,513.172 shares owned afterSep 02, 2026 · 103,320.172 shares owned afterSep 01, 2026Sep 02, 2026
103,320.172Sep 02, 2026
Kwon DavidCommon Stock · Direct
15.0k13.0kAug 20, 2026 · 13,192.739 shares owned afterAug 20, 2026 · 13,990.739 shares owned afterSep 01, 2026 · 12,986.452 shares owned afterSep 01, 2026 · 14,955.739 shares owned afterAug 20, 2026Sep 01, 2026
14,955.739Sep 01, 2026
Michaud Brian L.Common Stock · Direct
21.1k18.4kAug 21, 2026 · 18,441.5155 shares owned afterSep 01, 2026 · 18,843.0865 shares owned afterSep 01, 2026 · 21,124.5155 shares owned afterAug 21, 2026Sep 01, 2026
21,124.5155Sep 01, 2026
D'Ambrosio ChristopherCommon Stock · Direct
13.5k9.9kSep 01, 2026 · 13,535.448 shares owned afterSep 01, 2026 · 11,799.672 shares owned afterSep 02, 2026 · 9,927.672 shares owned afterSep 01, 2026Sep 02, 2026
9,927.672Sep 02, 2026
DeSilva JosephCommon Stock · Direct
33.4k19.5kSep 01, 2026 · 33,449.198 shares owned afterSep 01, 2026 · 25,967.188 shares owned afterSep 02, 2026 · 19,455.188 shares owned afterSep 01, 2026Sep 02, 2026
19,455.188Sep 02, 2026
Foskett DavidCommon Stock · Direct
17.7k14.1kSep 01, 2026 · 15,675.4555 shares owned afterSep 01, 2026 · 17,655.9505 shares owned afterSep 02, 2026 · 14,146.4555 shares owned afterSep 01, 2026Sep 02, 2026
14,146.4555Sep 02, 2026
Boland PaulCommon Stock · Direct
15.5k12.3kSep 01, 2026 · 12,333.841 shares owned afterSep 01, 2026 · 15,467.403 shares owned afterSep 01, 2026Sep 01, 2026
15,467.403Sep 01, 2026
Bonarti Michael ACommon Stock · Direct
97.1k89.3kSep 01, 2026 · 97,063.279 shares owned afterSep 01, 2026 · 89,336.332 shares owned afterSep 01, 2026Sep 01, 2026
89,336.332Sep 01, 2026

These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.

Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells red
0 active days
Aug 04Sep 04
LessMore

Filing detail checks

Secondary metrics for the selected period
Largest buy-
Largest sale$297M
10b5-1 detected29
Amended rows0

Filing-only signals

Deterministic matches in the selected period

ADP transaction history

Filters apply within this company and selected period by default
Reset
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date

No transactions match your filters

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AUTOMATIC DATA PROCESSING INC Insider Activity FAQ

SEC Form 4 context

Who recently reported transactions at AUTOMATIC DATA PROCESSING INC?

Rodriguez Carlos A, Orihuela Samantha D, Michaud Brian L., Magliulo Virginia, Lehberger Jonathan S, Kwon David, KUTAM SREENIVASA, Hadley Peter J, Foskett David, DeSilva Joseph, D'Ambrosio Christopher, Bonarti Michael A.

When was the latest reported open-market purchase?

No code-P purchase is available for this period.

When was the latest reported open-market sale?

Foskett David reported a sale on Sep 02, 2026 valued at $43.2M. Read the SEC filing.

What is the recent purchase and sale balance?

Net open-market selling in the selected period was $11,436,256.25. Sales can occur for many non-investment reasons.

Where can I see the original SEC filing?

Every transaction row and latest-activity fact links to its original SEC filing.

What do these Form 4 transaction codes mean?

P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.