Automatic Data Processing Inc. (ADP) Insider Trading

Last 12 months

Insiders bought $746k and sold $13.8M on the open market.

All of the selling was scheduled in advance under 10b5-1 plans.

Net open-market

−$13.1M

1 buy · 18 sales

Under a 10b5-1 plan

100%

of the value sold

Insiders who bought / sold

1 / 6

executives and directors

Last open-market buy

May 2026

May 7, 2026

Get an email when ADP's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 3	Joseph Desilva Executive VP	Sold10b5-1 plan	631	$282.87	$178k	3.2%	Form 4
Sep 2	David Foskett Corp. VP	Sold10b5-1 plan	1,529	$283.00	$433k	9.8%	Form 4
Sep 2	Joseph Desilva Executive VP	Sold10b5-1 plan	6,512	$283.00	$1.84M	25%	Form 4
Sep 2	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	1,872	$283.00	$530k	16%	Form 4
Sep 2	Maria Black President & CEO	Sold10b5-1 plan 14 parts	29,810	$280.91 average	$8.37M	27%	Form 4
Aug 21	Brian L. Michaud Executive VP	Sold10b5-1 plan	120	$279.70	$34k	0.6%	Form 4
Aug 20	David Kwon Corp VP	Sold10b5-1 plan	798	$280.00	$223k	5.7%	Form 4
Jul 30	David Kwon Corp VP	Sold10b5-1 plan 3 parts	2,414	$265.62 average	$641k	20%	Form 4
May 8	Brian L. Michaud Executive VP	Sold10b5-1 plan	848	$212.13	$180k	5.5%	Form 4
May 7	Robert Holmes Swan Director	Bought	3,619	$206.05	$746k	231%	Form 4
Apr 14	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	543	$195.74	$106k	6.1%	Form 4
Mar 16	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	543	$208.45	$113k	5.7%	Form 4
Feb 17	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	543	$212.43	$115k	5.4%	Form 4
Feb 6	Brian L. Michaud Executive VP	Sold10b5-1 plan	1,000	$234.18	$234k	6.1%	Form 4
Feb 5	David Foskett Corp. VP	Sold10b5-1 plan	266	$237.00	$63k	2.4%	Form 4
Jan 13	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	543	$262.29	$142k	5.2%	Form 4
Jan 12	David Kwon Corp VP	Sold10b5-1 plan	806	$264.80	$213k	6.7%	Form 4
Jan 6	David Kwon Corp VP	Sold10b5-1 plan	900	$260.00	$234k	7.0%	Form 4
Jan 5	Maria Black President & CEO	Sold10b5-1 plan 6 parts	715	$257.17 average	$184k	0.9%	Form 4
Sep 11, 2025 – Sep 12, 2025	Carlos A Rodriguez Director	Sold10b5-1 plan 12 parts	4,086	$295.26 average	$1.21M	10%	Form 4
Sep 10, 2025	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	597	$296.90	$177k	5.4%	Form 4
Sep 9, 2025 – Sep 10, 2025	Carlos A Rodriguez Director	Sold10b5-1 plan 10 parts	43,900	$295.05 average	$13M	53%	Form 4
Sep 9, 2025	Michael A Bonarti Corporate Vice President	Sold10b5-1 plan	8,728	$298.43	$2.6M	9.8%	Form 4
Sep 5, 2025	Carlos A Rodriguez Director	Sold10b5-1 plan 9 parts	12,056	$297.12 average	$3.58M	24%	Form 4
Sep 3, 2025 – Sep 4, 2025	Carlos A Rodriguez Director	Sold10b5-1 plan 9 parts	23,402	$299.31 average	$7M	31%	Form 4
Sep 3, 2025	Maria Black President & CEO	Sold10b5-1 plan 20 parts	23,605	$298.31 average	$7.04M	24%	Form 4
Sep 3, 2025	Joseph Desilva Executive VP	Sold10b5-1 plan	4,614	$296.57	$1.37M	21%	Form 4
Sep 3, 2025	David Foskett Corp. VP	Sold10b5-1 plan	1,373	$296.57	$407k	10%	Form 4
Sep 3, 2025	Don McGuire Corp VP	Sold10b5-1 plan	13,599	$296.57	$4.03M	43%	Form 4
Sep 2, 2025	David Foskett Corp. VP	Sold10b5-1 plan	1,043	$301.13	$314k	7.3%	Form 4
Sep 2, 2025	Joseph Desilva Executive VP	Sold10b5-1 plan	1,987	$301.64	$599k	8.2%	Form 4
Sep 2, 2025	Maria Black President & CEO	Sold10b5-1 plan 4 parts	7,721	$299.93 average	$2.32M	7.2%	Form 4
Jul 1, 2025	Brian L. Michaud Corp VP	Sold10b5-1 plan	206	$308.18	$63k	1.7%	Form 4
Jun 13, 2025	Joseph Desilva Corp VP	Sold10b5-1 plan	1,381	$307.07	$424k	8.1%	Form 4
May 12, 2025	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	472	$311.82	$147k	5.9%	Form 4
Apr 10, 2025	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	478	$293.14	$140k	6.1%	Form 4
Apr 1, 2025	Brian L. Michaud Corp VP	Sold10b5-1 plan	1,500	$305.38	$458k	11%	Form 4
Mar 10, 2025	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	473	$306.20	$145k	6.1%	Form 4
Feb 10, 2025	Christopher D'Ambrosio Corp. VP	Sold10b5-1 plan	471	$308.24	$145k	6.2%	Form 4
Feb 3, 2025	Jonathan S Lehberger Corp. VP	Sold10b5-1 plan	2,324	$303.30	$705k	43%	Form 4

Sep 310b5-1 plan
Joseph Desilva
Executive VP · sold 631 at $282.87
$178k
3.2% of stake
Sep 210b5-1 plan
David Foskett
Corp. VP · sold 1,529 at $283.00
$433k
9.8% of stake
Sep 210b5-1 plan
Joseph Desilva
Executive VP · sold 6,512 at $283.00
$1.84M
25% of stake
Sep 210b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 1,872 at $283.00
$530k
16% of stake
Sep 210b5-1 plan
Maria Black
President & CEO · sold 29,810 at avg $280.91
$8.37M
27% of stake
Aug 2110b5-1 plan
Brian L. Michaud
Executive VP · sold 120 at $279.70
$34k
0.6% of stake
Aug 2010b5-1 plan
David Kwon
Corp VP · sold 798 at $280.00
$223k
5.7% of stake
Jul 3010b5-1 plan
David Kwon
Corp VP · sold 2,414 at avg $265.62
$641k
20% of stake
May 810b5-1 plan
Brian L. Michaud
Executive VP · sold 848 at $212.13
$180k
5.5% of stake
May 7
Robert Holmes Swan
Director · bought 3,619 at $206.05
$746k
231% of stake
Apr 1410b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 543 at $195.74
$106k
6.1% of stake
Mar 1610b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 543 at $208.45
$113k
5.7% of stake
Feb 1710b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 543 at $212.43
$115k
5.4% of stake
Feb 610b5-1 plan
Brian L. Michaud
Executive VP · sold 1,000 at $234.18
$234k
6.1% of stake
Feb 510b5-1 plan
David Foskett
Corp. VP · sold 266 at $237.00
$63k
2.4% of stake
Jan 1310b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 543 at $262.29
$142k
5.2% of stake
Jan 1210b5-1 plan
David Kwon
Corp VP · sold 806 at $264.80
$213k
6.7% of stake
Jan 610b5-1 plan
David Kwon
Corp VP · sold 900 at $260.00
$234k
7.0% of stake
Jan 510b5-1 plan
Maria Black
President & CEO · sold 715 at avg $257.17
$184k
0.9% of stake
Sep 11, 2025 – Sep 12, 202510b5-1 plan
Carlos A Rodriguez
Director · sold 4,086 at avg $295.26
$1.21M
10% of stake
Sep 10, 202510b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 597 at $296.90
$177k
5.4% of stake
Sep 9, 2025 – Sep 10, 202510b5-1 plan
Carlos A Rodriguez
Director · sold 43,900 at avg $295.05
$13M
53% of stake
Sep 9, 202510b5-1 plan
Michael A Bonarti
Corporate Vice President · sold 8,728 at $298.43
$2.6M
9.8% of stake
Sep 5, 202510b5-1 plan
Carlos A Rodriguez
Director · sold 12,056 at avg $297.12
$3.58M
24% of stake
Sep 3, 2025 – Sep 4, 202510b5-1 plan
Carlos A Rodriguez
Director · sold 23,402 at avg $299.31
$7M
31% of stake
Sep 3, 202510b5-1 plan
Maria Black
President & CEO · sold 23,605 at avg $298.31
$7.04M
24% of stake
Sep 3, 202510b5-1 plan
Joseph Desilva
Executive VP · sold 4,614 at $296.57
$1.37M
21% of stake
Sep 3, 202510b5-1 plan
David Foskett
Corp. VP · sold 1,373 at $296.57
$407k
10% of stake
Sep 3, 202510b5-1 plan
Don McGuire
Corp VP · sold 13,599 at $296.57
$4.03M
43% of stake
Sep 2, 202510b5-1 plan
David Foskett
Corp. VP · sold 1,043 at $301.13
$314k
7.3% of stake
Sep 2, 202510b5-1 plan
Joseph Desilva
Executive VP · sold 1,987 at $301.64
$599k
8.2% of stake
Sep 2, 202510b5-1 plan
Maria Black
President & CEO · sold 7,721 at avg $299.93
$2.32M
7.2% of stake
Jul 1, 202510b5-1 plan
Brian L. Michaud
Corp VP · sold 206 at $308.18
$63k
1.7% of stake
Jun 13, 202510b5-1 plan
Joseph Desilva
Corp VP · sold 1,381 at $307.07
$424k
8.1% of stake
May 12, 202510b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 472 at $311.82
$147k
5.9% of stake
Apr 10, 202510b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 478 at $293.14
$140k
6.1% of stake
Apr 1, 202510b5-1 plan
Brian L. Michaud
Corp VP · sold 1,500 at $305.38
$458k
11% of stake
Mar 10, 202510b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 473 at $306.20
$145k
6.1% of stake
Feb 10, 202510b5-1 plan
Christopher D'Ambrosio
Corp. VP · sold 471 at $308.24
$145k
6.2% of stake
Feb 3, 202510b5-1 plan
Jonathan S Lehberger
Corp. VP · sold 2,324 at $303.30
$705k
43% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch ADP, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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