Comparable stake leader
VANGUARD CAPITAL MANAGEMENT LLC
SEC ownership of AUTOMATIC DATA PROCESSING INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000008670.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
08 May 2026
- Public ticker
- ADP on Nasdaq
- Parsed ownership sources
- 13D/G, 13F, and 3/4/5
- Largest SEC-reported holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest 13D/G holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest parsed ownership date
- 08 May 2026
- Issuer CIK
- 0000008670
- Issuer location
- Roseland, NJ
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of AUTOMATIC DATA PROCESSING INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD CAPITAL MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
08 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 7.5%
13D/G row: VANGUARD CAPITAL MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 7.5%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD CAPITAL MANAGEMENT LLC
7.5%
Maria Black
0.02%
Sreenivasa Kutam
0.01%
Carlos A. Rodriguez
0.01%
Peter Bisson
0.01%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.5%
|
$6,149,346,931
30,265,513 shares
|
$0 | 31 Mar 2026 |
| Maria Black |
3/4/5
President & CEO
|
0.02%
|
$19,370,065
75,052 shares
|
-$9,541,401 | 05 Jan 2026 |
| Sreenivasa Kutam |
3/4/5
Corp VP
|
0.01%
|
$10,823,243
40,686 shares
|
— | 12 Jan 2026 |
| Carlos A. Rodriguez |
3/4/5
Director
|
0.01%
|
$10,724,913
36,541 shares
|
-$24,745,417 | 12 Nov 2025 |
| Peter Bisson |
3/4/5
Director
|
0.01%
|
$6,682,701
22,769 shares
|
— | 12 Nov 2025 |
| Sandra S. Wijnberg |
3/4/5
Director
|
0.01%
|
$6,018,217
20,505 shares
|
— | 12 Nov 2025 |
| Joseph DeSilva |
3/4/5
Executive VP
|
0%
|
$4,508,079
17,458 shares
|
-$1,967,733 | 02 Jan 2026 |
| Thomas J. Lynch |
3/4/5
Director
|
0%
|
$4,985,684
16,987 shares
|
— | 12 Nov 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$44,934,461.
Buys
$745,695
Insiders: 1
Sells
$45,680,156
Insiders: 9
Net
-$44,934,461
Shares: -151,386
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 3,619
Shares: 155,005
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 3,619 | 1,934 | $745,695 | $399,361 | +$346,334 |
| 3-6 | 0 | 4,773 | $0 | $1,186,304 | -$1,186,304 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 148,298 | $0 | $44,094,491 | -$44,094,491 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 40 reporting-owner rows connected to AUTOMATIC DATA PROCESSING INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
40
Largest Forms 3/4/5 holder
Michael A. Bonarti
Net 12M change
-$44,510,396
Latest report
08 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Michael A. Bonarti | Corporate Vice President | $22,807,411 | -$2,604,697 | -10% | Mixed | 12 Dec 2025 |
| Maria Black | President & CEO | $19,370,065 | -$9,541,401 | -33% | Filing P/S | 05 Jan 2026 |
| John P. Jones III | Director | $18,228,193 | Mixed | 06 Nov 2024 | ||
| Sreenivasa Kutam | Corp VP | $10,823,243 | Mixed | 12 Jan 2026 | ||
| Carlos A. Rodriguez | Director | $10,724,913 | -$24,745,417 | -70% | Mixed | 12 Nov 2025 |
| Donald Weinstein | Corporate VP | $8,492,228 | Mixed | 11 Jan 2023 | ||
| Michael C. Eberhard | Corporate Vice President | $7,617,906 | Mixed | 01 Sep 2022 | ||
| Clark Richard T. | Director | $7,589,493 | Mixed | 10 Nov 2021 | ||
| John Ayala | Corp. VP | $6,821,761 | Mixed | 03 Jan 2025 | ||
| Peter Bisson | Director | $6,682,701 | Mixed | 12 Nov 2025 | ||
| Dermot J. O'Brien | Corp. VP | $6,315,251 | Mixed | 09 Jun 2021 | ||
| Deborah L. Dyson | Corp. VP | $6,269,316 | Mixed | 05 Apr 2022 | ||
| Sandra S. Wijnberg | Director | $6,018,217 | Mixed | 12 Nov 2025 | ||
| Don McGuire | Corp VP | $6,014,708 | -$4,033,055 | -40% | Mixed | 03 Sep 2025 |
| Stuart Sackman | Corp. VP | $5,637,623 | Mixed | 03 Jan 2022 | ||
| William J. Ready | Director | $5,549,880 | Mixed | 06 Nov 2024 | ||
| Thomas J. Lynch | Director | $4,985,684 | Mixed | 12 Nov 2025 | ||
| Scott F. Powers | Director | $4,702,457 | Mixed | 12 Nov 2025 | ||
| Kathleen A. Winters | Corp. VP | $4,531,787 | Mixed | 01 Sep 2021 | ||
| Joseph DeSilva | Executive VP | $4,508,079 | -$1,967,733 | -30% | Mixed | 02 Jan 2026 |
Recent insider transactions for AUTOMATIC DATA PROCESSING INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Brian L. Michaud | ADP | Common Stock | Sale | -5.54% | $179,886 | $212.13 | -848 | 14,462 | 08 May 2026 | Direct |
| Robert Holmes Swan | ADP | Common Stock | Purchase | 249.1% | $745,695 | $206.05 | 3,619 | 5,072 | 07 May 2026 | Direct |
| Christopher D'Ambrosio | ADP | Common Stock | Sale | -6.09% | $106,287 | $195.74 | -543 | 8,369 | 14 Apr 2026 | Direct |
| Christopher D'Ambrosio | ADP | Common Stock | Sale | -5.74% | $113,188 | $208.45 | -543 | 8,912 | 16 Mar 2026 | Direct |
| Christopher D'Ambrosio | ADP | Common Stock | Sale | -5.43% | $115,349 | $212.43 | -543 | 9,455 | 17 Feb 2026 | Direct |
| Brian L. Michaud | ADP | Common Stock | Sale | -6.13% | $234,180 | $234.18 | -1,000 | 15,310 | 06 Feb 2026 | Direct |
| David Foskett | ADP | Common Stock | Sale | -2.37% | $63,042 | $237.00 | -266 | 10,954 | 05 Feb 2026 | Direct |
| Brian L. Michaud | ADP | Common Stock | Tax liability | -0.8% | -132 | 16,310 | 02 Feb 2026 | Direct | ||
| David Foskett | ADP | Common Stock | Tax liability | -4.96% | -586 | 11,220 | 30 Jan 2026 | Direct | ||
| Christopher D'Ambrosio | ADP | Common Stock | Sale | -5.15% | $142,423 | $262.29 | -543 | 9,998 | 13 Jan 2026 | Direct |
| David Kwon | ADP | Common Stock | Sale | -6.72% | $213,429 | $264.80 | -806 | 11,187 | 12 Jan 2026 | Direct |
| Sreenivasa Kutam | ADP | Common Stock | Tax liability | -0.21% | -84.59 | 40,686 | 12 Jan 2026 | Direct | ||
| David Kwon | ADP | Common Stock | Sale | -6.98% | $234,000 | $260.00 | -900 | 11,993 | 06 Jan 2026 | Direct |
| David Kwon | ADP | Common Stock | Options Exercise | 9.67% | 1,137 | 12,893 | 06 Jan 2026 | Direct | ||
| David Kwon | ADP | Stock Option (Right to Buy) | Options Exercise | -33.3% | -1,137 | 2,274 | 06 Jan 2026 | Direct | ||
| Maria Black | ADP | Common Stock | Sale | -0.94% | $183,880 | $257.17 | -715 | 75,052 | 05 Jan 2026 | Direct |
| Joseph DeSilva | ADP | Common Stock | Gift | -0.44% | -78 | 17,458 | 02 Jan 2026 | Direct | ||
| Maria Black | ADP | Common Stock | Tax liability | -0.57% | -435 | 75,767 | 02 Jan 2026 | Direct | ||
| David Foskett | ADP | Common Stock | Discretionary transaction in accordance with Rule 16b-3(f) resulting in acquisition or disposition of issuer securities | 0.21% | 24.55 | 11,805 | 01 Jan 2026 | Direct | ||
| Brian L. Michaud | ADP | Common Stock | Discretionary transaction in accordance with Rule 16b-3(f) resulting in acquisition or disposition of issuer securities | 0.25% | 40.98 | 16,442 | 01 Jan 2026 | Direct | ||
| Maria Black | ADP | Common Stock | Discretionary transaction in accordance with Rule 16b-3(f) resulting in acquisition or disposition of issuer securities | 0.05% | 40.98 | 76,202 | 01 Jan 2026 | Direct | ||
| Sreenivasa Kutam | ADP | Common Stock | Tax liability | -0.4% | -163 | 40,770 | 12 Dec 2025 | Direct | ||
| David Kwon | ADP | Common Stock | Tax liability | -0.43% | -50.58 | 11,756 | 12 Dec 2025 | Direct | ||
| Brian L. Michaud | ADP | Common Stock | Tax liability | -0.22% | -36.83 | 16,401 | 12 Dec 2025 | Direct | ||
| Michael A. Bonarti | ADP | Common Stock | Tax liability | -0.15% | -117 | 80,414 | 12 Dec 2025 | Direct | ||
| Linnie M. Haynesworth | ADP | Common Stock | Award | 15.8% | 942 | 6,891 | 12 Nov 2025 | Direct | ||
| Francine S. Katsoudas | ADP | Common Stock | Award | 14.3% | 1,453 | 11,634 | 12 Nov 2025 | Direct | ||
| David Goeckeler | ADP | Common Stock | Award | 27.9% | 1,453 | 6,662 | 12 Nov 2025 | Direct | ||
| Peter Bisson | ADP | Common Stock | Award | 7.16% | 1,521 | 22,769 | 12 Nov 2025 | Direct | ||
| Nazzic S. Keene | ADP | Common Stock | Award | 10.7% | 942 | 9,717 | 12 Nov 2025 | Direct | ||
| Carlos A. Rodriguez | ADP | Common Stock | Award | 6.83% | 1,453 | 22,728 | 12 Nov 2025 | Direct | ||
| Karen S. Lynch | ADP | Common Stock | Award | 1772% | 1,453 | 1,535 | 12 Nov 2025 | Direct | ||
| Scott F. Powers | ADP | Common Stock | Award | 11.7% | 1,531 | 14,572 | 12 Nov 2025 | Direct | ||
| Robert Holmes Swan | ADP | Common Stock | Award | 1,453 | 1,453 | 12 Nov 2025 | Direct | |||
| Thomas J. Lynch | ADP | Common Stock | Award | 15.2% | 2,239 | 16,987 | 12 Nov 2025 | Direct | ||
| Sandra S. Wijnberg | ADP | Common Stock | Award | 8.18% | 1,551 | 20,505 | 12 Nov 2025 | Direct | ||
| Carlos A. Rodriguez | ADP | Common Stock | Sale | -5.65% | $374,100 | $293.87 | -1,273 | 21,275 | 12 Sep 2025 | Direct |
| Carlos A. Rodriguez | ADP | Common Stock | Sale | -11.1% | $832,325 | $295.89 | -2,813 | 22,548 | 11 Sep 2025 | Direct |
| Christopher D'Ambrosio | ADP | Common Stock | Sale | -5.36% | $177,249 | $296.90 | -597 | 10,541 | 10 Sep 2025 | Direct |
| Carlos A. Rodriguez | ADP | Common Stock | Sale | -46.4% | $6,430,440 | $292.96 | -21,950 | 25,361 | 10 Sep 2025 | Direct |
| Carlos A. Rodriguez | ADP | Common Stock | Options Exercise | 86.6% | 21,950 | 47,311 | 10 Sep 2025 | Direct | ||
| Carlos A. Rodriguez | ADP | Stock Option (Right to Buy) | Options Exercise | -100% | -21,950 | 0 | 10 Sep 2025 | Direct | ||
| Michael A. Bonarti | ADP | Common Stock | Sale | -9.78% | $2,604,697 | $298.43 | -8,728 | 80,531 | 09 Sep 2025 | Direct |
| Carlos A. Rodriguez | ADP | Common Stock | Sale | -46.4% | $6,522,114 | $297.14 | -21,950 | 25,361 | 09 Sep 2025 | Direct |
| Carlos A. Rodriguez | ADP | Common Stock | Options Exercise | 86.6% | 21,950 | 47,311 | 09 Sep 2025 | Direct | ||
| Carlos A. Rodriguez | ADP | Stock Option (Right to Buy) | Options Exercise | -50% | -21,950 | 21,950 | 09 Sep 2025 | Direct | ||
| Carlos A. Rodriguez | ADP | Common Stock | Sale | -32.2% | $3,582,032 | $297.12 | -12,056 | 25,361 | 05 Sep 2025 | Direct |
| Carlos A. Rodriguez | ADP | Common Stock | Sale | -23.8% | $3,513,661 | $300.29 | -11,701 | 37,417 | 04 Sep 2025 | Direct |
| Maria Black | ADP | Common Stock | Sale | -23.7% | $7,041,744 | $298.32 | -23,605 | 76,161 | 03 Sep 2025 | Direct |
| Joseph DeSilva | ADP | Common Stock | Sale | -20.8% | $1,368,374 | $296.57 | -4,614 | 17,536 | 03 Sep 2025 | Direct |
* marks a reported price that did not pass the local price check.