Automatic Data Processing insider activity
What the executives and directors of Automatic Data Processing actually did with their own shares, decoded from their SEC Form 4 filings. Each figure says the stretch of time it covers.
−$13M
net open-market flow, 12 m
1 open-market buy, 12 m
100%
of sale value on 10b5-1 plans, 12 m
137 days since an insider bought, whole record
The tape: three years of insider trades
Open-market buy
Discretionary sale
Planned sale (10b5-1)
Reported-price path
Routine
Every marker sits at the price reported on the Form 4. The line is the monthly median of all prices insiders reported, so the chart needs no market feed; the grey strip is the routine flow (grants, vestings, tax withholding and gifts) that a headline gets wrong by counting it as selling.
The 191 routine events on the chart, as a list
| Date | Insider | Shares |
|---|---|---|
| Sep 9, 2026 | Sugla Vishwas | 4,900 |
| Sep 1, 2026 | Rodriguez Carlos A | 13K |
| Sep 1, 2026 | Bonarti Michael A | 13K |
| Sep 1, 2026 | Black Maria | 53K |
| Sep 1, 2026 | KUTAM SREENIVASA | 13K |
| Sep 1, 2026 | DeSilva Joseph | 13K |
| Sep 1, 2026 | Michaud Brian L. | 4,964 |
| Sep 1, 2026 | D'Ambrosio Christopher | 4,301 |
| Sep 1, 2026 | Kwon David | 3,732 |
| Sep 1, 2026 | Magliulo Virginia | 5,567 |
| Sep 1, 2026 | Boland Paul | 6,768 |
| Sep 1, 2026 | Lehberger Jonathan S | 1,309 |
| Sep 1, 2026 | Foskett David | 5,986 |
| Sep 1, 2026 | Hadley Peter J | 8,115 |
| Sep 1, 2026 | Orihuela Samantha D | 1,317 |
| Aug 20, 2026 | Kwon David | 967 |
| Aug 5, 2026 | Rodriguez Carlos A | 25K |
| Aug 5, 2026 | Bonarti Michael A | 12K |
| Aug 5, 2026 | Black Maria | 45K |
| Aug 5, 2026 | KUTAM SREENIVASA | 11K |
| Aug 5, 2026 | DeSilva Joseph | 11K |
| Aug 5, 2026 | Michaud Brian L. | 4,050 |
| Aug 5, 2026 | D'Ambrosio Christopher | 2,601 |
| Aug 5, 2026 | Kwon David | 3,114 |
| Aug 5, 2026 | Magliulo Virginia | 4,050 |
| Aug 5, 2026 | Boland Paul | 4,672 |
| Aug 5, 2026 | Lehberger Jonathan S | 747 |
| Aug 5, 2026 | Foskett David | 2,647 |
| Aug 5, 2026 | Hadley Peter J | 1,479 |
| Jul 31, 2026 | Kwon David | 1,137 |
| Feb 2, 2026 | Michaud Brian L. | 132 |
| Jan 30, 2026 | Foskett David | 586 |
| Jan 12, 2026 | KUTAM SREENIVASA | 85 |
| Jan 6, 2026 | Kwon David | 1,137 |
| Jan 2, 2026 | Black Maria | 435 |
| Jan 2, 2026 | DeSilva Joseph | 78 |
| Dec 12, 2025 | Bonarti Michael A | 117 |
| Dec 12, 2025 | KUTAM SREENIVASA | 163 |
| Dec 12, 2025 | Michaud Brian L. | 37 |
| Dec 12, 2025 | Kwon David | 51 |
| Nov 12, 2025 | WIJNBERG SANDRA S | 1,551 |
| Nov 12, 2025 | LYNCH THOMAS J | 2,239 |
| Nov 12, 2025 | SWAN ROBERT HOLMES | 1,453 |
| Nov 12, 2025 | POWERS SCOTT F | 1,531 |
| Nov 12, 2025 | Lynch Karen S | 1,453 |
| Nov 12, 2025 | Rodriguez Carlos A | 1,453 |
| Nov 12, 2025 | KEENE NAZZIC S | 942 |
| Nov 12, 2025 | Bisson Peter | 1,521 |
| Nov 12, 2025 | Goeckeler David | 1,453 |
| Nov 12, 2025 | Katsoudas Francine S | 1,453 |
| Nov 12, 2025 | Haynesworth Linnie M | 942 |
| Sep 10, 2025 | Rodriguez Carlos A | 44K |
| Sep 2, 2025 | Bonarti Michael A | 13K |
| Sep 2, 2025 | Black Maria | 51K |
| Sep 2, 2025 | KUTAM SREENIVASA | 11K |
| Sep 2, 2025 | DeSilva Joseph | 12K |
| Sep 2, 2025 | Michaud Brian L. | 4,561 |
| Sep 2, 2025 | D'Ambrosio Christopher | 4,270 |
| Sep 2, 2025 | Kwon David | 3,400 |
| Sep 2, 2025 | Magliulo Virginia | 4,970 |
Where the shares went, last 12 months
Every Form 4 movement decomposed: what flowed in (grants, vested equity, purchases) and what flowed out (tax withholding, plan sales, discretionary sales, gifts). Counted in shares, because grants carry no price.
The chart, in numbers
| Flow | Shares |
|---|---|
| Granted | 211K |
| Vested / exercised | 3,241 |
| Bought on market | 3,619 |
| Other in | 255 |
| Withheld for tax | 85K |
| Planned sales (10b5-1) | 50K |
| Gifts | 78 |
| Kept | 83K |
Skin in the game
Directly held shares as reported after each trade, indexed to 100 at the start of the window, up to five years back. Direct holdings only: trust and family-entity positions are per-entity in the filings and do not sum honestly, so this chart refuses to guess. The steps are the trades.
The chart, in numbers
| Insider | Start of the window | Latest reported | Indexed, start = 100 |
|---|---|---|---|
| Bonarti Michael A | 63K | 89K | 140.8 |
| JONES JOHN P III | 60K | 65K | 108.4 |
| Rodriguez Carlos A | 86K | 34K | 39.6 |
Who holds what
the 14 largest holdings of 30| Insider | Role | Shares held | Buys 12 m | Sales 12 m | 12 m | Last trade |
|---|---|---|---|---|---|---|
| Black Maria President & CEO Last trade Sep 2, 2026 | CEO | 106K | – | $8.6M | net selling over the year: 0 months buying, 2 months selling | Sep 2, 2026 |
| Bonarti Michael A Corporate Vice President Last trade Sep 9, 2025 | Officer | 97K | – | – | Sep 9, 2025 | |
| JONES JOHN P III Last trade Jan 2, 2019 | Director | 65K | – | – | Jan 2, 2019 | |
| Rodriguez Carlos A President & CEO Last trade Sep 12, 2025 | CEO | 62K | – | – | Sep 12, 2025 | |
| KUTAM SREENIVASA Corp VP Last trade Nov 6, 2024 | Officer | 57K | – | – | Nov 6, 2024 | |
| Ayala John Corp. VP Last trade Jan 3, 2025 | Officer | 29K | – | – | Jan 3, 2025 | |
| Bisson Peter | Director | 23K | – | – | – | |
| Michaud Brian L. Executive VP Last trade Aug 21, 2026 | Officer | 21K | – | $448K | net selling over the year: 0 months buying, 3 months selling | Aug 21, 2026 |
| WIJNBERG SANDRA S | Director | 21K | – | – | – | |
| Magliulo Virginia Executive VP Last trade Jan 13, 2025 | Officer | 21K | – | – | Jan 13, 2025 | |
| Ready William J | Director | 20K | – | – | – | |
| Hadley Peter J CFO | CFO | 19K | – | – | – | |
| DeSilva Joseph Executive VP Last trade Sep 3, 2026 | Officer | 19K | – | $2.0M | net selling over the year: 0 months buying, 1 month selling | Sep 3, 2026 |
| McGuire Don Corp VP Last trade Sep 3, 2025 | Officer | 18K | – | – | Sep 3, 2025 |
Open-market trade log
the 60 most recent of 1,278| Date | Insider | Type | Shares | Price | Value | Since trade | Filed |
|---|---|---|---|---|---|---|---|
| Sep 3, 2026 | DeSilva Joseph (Officer) 631 shares $282.87 −0.6% since trade filed Sep 4, 2026 | Planned sale (10b5-1) | 631 | $282.87 | $178K | −0.6% | Sep 4, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 214 shares $279.21 +0.7% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 214 | $279.21 | $60K | +0.7% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 256 shares $279.44 +0.6% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 256 | $279.44 | $72K | +0.6% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 559 shares $279.93 +0.4% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 559 | $279.93 | $156K | +0.4% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 610 shares $281.86 −0.3% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 610 | $281.86 | $172K | −0.3% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 700 shares $278.59 +0.9% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 700 | $278.59 | $195K | +0.9% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 760 shares $281.70 −0.2% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 760 | $281.70 | $214K | −0.2% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 786 shares $280.27 +0.3% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 786 | $280.27 | $220K | +0.3% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 1,018 shares $280.60 +0.2% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 1,018 | $280.60 | $286K | +0.2% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 1,018 shares $281.60 −0.2% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 1,018 | $281.60 | $287K | −0.2% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 1,193 shares $280.96 +0.1% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 1,193 | $280.96 | $335K | +0.1% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 1,483 shares $281.13 +0.0% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 1,483 | $281.13 | $417K | +0.0% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 2,898 shares $279.74 +0.5% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 2,898 | $279.74 | $811K | +0.5% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 7,724 shares $281.66 −0.2% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 7,724 | $281.66 | $2.2M | −0.2% | Sep 3, 2026 |
| Sep 2, 2026 | Black Maria (CEO) 11K shares $280.82 +0.1% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 11K | $280.82 | $3.0M | +0.1% | Sep 3, 2026 |
| Sep 2, 2026 | DeSilva Joseph (Officer) 6,512 shares $283.00 −0.7% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 6,512 | $283.00 | $1.8M | −0.7% | Sep 3, 2026 |
| Sep 2, 2026 | D'Ambrosio Christopher (Officer) 1,872 shares $283.00 −0.7% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 1,872 | $283.00 | $530K | −0.7% | Sep 3, 2026 |
| Sep 2, 2026 | Foskett David (Officer) 1,529 shares $283.00 −0.7% since trade filed Sep 3, 2026 | Planned sale (10b5-1) | 1,529 | $283.00 | $433K | −0.7% | Sep 3, 2026 |
| Aug 21, 2026 | Michaud Brian L. (Officer) 120 shares $279.70 +0.5% since trade filed Aug 24, 2026 | Planned sale (10b5-1) | 120 | $279.70 | $34K | +0.5% | Aug 24, 2026 |
| Aug 20, 2026 | Kwon David (Officer) 798 shares $280.00 +0.4% since trade filed Aug 24, 2026 | Planned sale (10b5-1) | 798 | $280.00 | $223K | +0.4% | Aug 24, 2026 |
| Jul 30, 2026 | Kwon David (Officer) 474 shares $265.62 +5.8% since trade filed Jul 31, 2026 | Planned sale (10b5-1) | 474 | $265.62 | $126K | +5.8% | Jul 31, 2026 |
| Jul 30, 2026 | Kwon David (Officer) 887 shares $265.62 +5.8% since trade filed Jul 31, 2026 | Planned sale (10b5-1) | 887 | $265.62 | $236K | +5.8% | Jul 31, 2026 |
| Jul 30, 2026 | Kwon David (Officer) 1,053 shares $265.62 +5.8% since trade filed Jul 31, 2026 | Planned sale (10b5-1) | 1,053 | $265.62 | $280K | +5.8% | Jul 31, 2026 |
| May 8, 2026 | Michaud Brian L. (Officer) 848 shares $212.13 +32.5% since trade filed May 11, 2026 | Planned sale (10b5-1) | 848 | $212.13 | $180K | +32.5% | May 11, 2026 |
| May 7, 2026 | SWAN ROBERT HOLMES (Director) 3,619 shares $206.05 +36.4% since trade filed May 11, 2026 | Open-market buy | 3,619 | $206.05 | $746K | +36.4% | May 11, 2026 |
| Apr 14, 2026 | D'Ambrosio Christopher (Officer) 543 shares $195.74 +43.6% since trade filed Apr 15, 2026 | Planned sale (10b5-1) | 543 | $195.74 | $106K | +43.6% | Apr 15, 2026 |
| Mar 16, 2026 | D'Ambrosio Christopher (Officer) 543 shares $208.45 +34.9% since trade filed Mar 17, 2026 | Planned sale (10b5-1) | 543 | $208.45 | $113K | +34.9% | Mar 17, 2026 |
| Feb 17, 2026 | D'Ambrosio Christopher (Officer) 543 shares $212.43 +32.3% since trade filed Feb 18, 2026 | Planned sale (10b5-1) | 543 | $212.43 | $115K | +32.3% | Feb 18, 2026 |
| Feb 6, 2026 | Michaud Brian L. (Officer) 1,000 shares $234.18 +20.1% since trade filed Feb 9, 2026 | Planned sale (10b5-1) | 1,000 | $234.18 | $234K | +20.1% | Feb 9, 2026 |
| Feb 5, 2026 | Foskett David (Officer) 266 shares $237.00 +18.6% since trade filed Feb 9, 2026 | Planned sale (10b5-1) | 266 | $237.00 | $63K | +18.6% | Feb 9, 2026 |
| Jan 13, 2026 | D'Ambrosio Christopher (Officer) 543 shares $262.29 +7.2% since trade filed Jan 14, 2026 | Planned sale (10b5-1) | 543 | $262.29 | $142K | +7.2% | Jan 14, 2026 |
| Jan 12, 2026 | Kwon David (Officer) 806 shares $264.80 +6.2% since trade filed Jan 14, 2026 | Planned sale (10b5-1) | 806 | $264.80 | $213K | +6.2% | Jan 14, 2026 |
| Jan 6, 2026 | Kwon David (Officer) 900 shares $260.00 +8.1% since trade filed Jan 8, 2026 | Planned sale (10b5-1) | 900 | $260.00 | $234K | +8.1% | Jan 8, 2026 |
| Jan 5, 2026 | Black Maria (CEO) 51 shares $253.32 +11.0% since trade filed Jan 6, 2026 | Planned sale (10b5-1) | 51 | $253.32 | $13K | +11.0% | Jan 6, 2026 |
| Jan 5, 2026 | Black Maria (CEO) 56 shares $255.73 +9.9% since trade filed Jan 6, 2026 | Planned sale (10b5-1) | 56 | $255.73 | $14K | +9.9% | Jan 6, 2026 |
| Jan 5, 2026 | Black Maria (CEO) 71 shares $254.95 +10.3% since trade filed Jan 6, 2026 | Planned sale (10b5-1) | 71 | $254.95 | $18K | +10.3% | Jan 6, 2026 |
| Jan 5, 2026 | Black Maria (CEO) 98 shares $258.77 +8.6% since trade filed Jan 6, 2026 | Planned sale (10b5-1) | 98 | $258.77 | $25K | +8.6% | Jan 6, 2026 |
| Jan 5, 2026 | Black Maria (CEO) 145 shares $257.24 +9.3% since trade filed Jan 6, 2026 | Planned sale (10b5-1) | 145 | $257.24 | $37K | +9.3% | Jan 6, 2026 |
| Jan 5, 2026 | Black Maria (CEO) 294 shares $258.09 +8.9% since trade filed Jan 6, 2026 | Planned sale (10b5-1) | 294 | $258.09 | $76K | +8.9% | Jan 6, 2026 |
| Sep 12, 2025 | Rodriguez Carlos A (Director) 7 shares $296.94 −5.3% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 7 | $296.94 | $2K | −5.3% | Sep 15, 2025 |
| Sep 12, 2025 | Rodriguez Carlos A (Director) 52 shares $294.41 −4.5% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 52 | $294.41 | $15K | −4.5% | Sep 15, 2025 |
| Sep 12, 2025 | Rodriguez Carlos A (Director) 129 shares $296.13 −5.1% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 129 | $296.13 | $38K | −5.1% | Sep 15, 2025 |
| Sep 12, 2025 | Rodriguez Carlos A (Director) 230 shares $292.81 −4.0% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 230 | $292.81 | $67K | −4.0% | Sep 15, 2025 |
| Sep 12, 2025 | Rodriguez Carlos A (Director) 855 shares $293.76 −4.3% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 855 | $293.76 | $251K | −4.3% | Sep 15, 2025 |
| Sep 11, 2025 | Rodriguez Carlos A (Director) 72 shares $298.58 −5.8% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 72 | $298.58 | $21K | −5.8% | Sep 15, 2025 |
| Sep 11, 2025 | Rodriguez Carlos A (Director) 186 shares $293.93 −4.4% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 186 | $293.93 | $55K | −4.4% | Sep 15, 2025 |
| Sep 11, 2025 | Rodriguez Carlos A (Director) 202 shares $293.04 −4.1% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 202 | $293.04 | $59K | −4.1% | Sep 15, 2025 |
| Sep 11, 2025 | Rodriguez Carlos A (Director) 337 shares $296.92 −5.3% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 337 | $296.92 | $100K | −5.3% | Sep 15, 2025 |
| Sep 11, 2025 | Rodriguez Carlos A (Director) 591 shares $295.82 −5.0% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 591 | $295.82 | $175K | −5.0% | Sep 15, 2025 |
| Sep 11, 2025 | Rodriguez Carlos A (Director) 623 shares $297.98 −5.7% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 623 | $297.98 | $186K | −5.7% | Sep 15, 2025 |
| Sep 11, 2025 | Rodriguez Carlos A (Director) 802 shares $294.80 −4.6% since trade filed Sep 15, 2025 | Planned sale (10b5-1) | 802 | $294.80 | $236K | −4.6% | Sep 15, 2025 |
| Sep 10, 2025 | Rodriguez Carlos A (Director) 380 shares $296.84 −5.3% since trade filed Sep 11, 2025 | Planned sale (10b5-1) | 380 | $296.84 | $113K | −5.3% | Sep 11, 2025 |
| Sep 10, 2025 | Rodriguez Carlos A (Director) 800 shares $294.96 −4.7% since trade filed Sep 11, 2025 | Planned sale (10b5-1) | 800 | $294.96 | $236K | −4.7% | Sep 11, 2025 |
| Sep 10, 2025 | Rodriguez Carlos A (Director) 1,607 shares $296.19 −5.1% since trade filed Sep 11, 2025 | Planned sale (10b5-1) | 1,607 | $296.19 | $476K | −5.1% | Sep 11, 2025 |
| Sep 10, 2025 | Rodriguez Carlos A (Director) 2,192 shares $293.78 −4.3% since trade filed Sep 11, 2025 | Planned sale (10b5-1) | 2,192 | $293.78 | $644K | −4.3% | Sep 11, 2025 |
| Sep 10, 2025 | Rodriguez Carlos A (Director) 3,311 shares $290.98 −3.4% since trade filed Sep 11, 2025 | Planned sale (10b5-1) | 3,311 | $290.98 | $963K | −3.4% | Sep 11, 2025 |
| Sep 10, 2025 | Rodriguez Carlos A (Director) 5,363 shares $292.12 −3.8% since trade filed Sep 11, 2025 | Planned sale (10b5-1) | 5,363 | $292.12 | $1.6M | −3.8% | Sep 11, 2025 |
| Sep 10, 2025 | Rodriguez Carlos A (Director) 8,297 shares $293.08 −4.1% since trade filed Sep 11, 2025 | Planned sale (10b5-1) | 8,297 | $293.08 | $2.4M | −4.1% | Sep 11, 2025 |
| Sep 10, 2025 | D'Ambrosio Christopher (Officer) 597 shares $296.90 −5.3% since trade filed Sep 11, 2025 | Planned sale (10b5-1) | 597 | $296.90 | $177K | −5.3% | Sep 11, 2025 |
| Sep 9, 2025 | Rodriguez Carlos A (Director) 300 shares $298.32 −5.8% since trade filed Sep 11, 2025 | Planned sale (10b5-1) | 300 | $298.32 | $89K | −5.8% | Sep 11, 2025 |
“Since trade” compares with the latest insider-implied price, not a market quote: these pages are built from filings alone. A role here is the one on that day's Form 4, so somebody promoted since appears under both titles.
Filing hygiene
242 Forms 4, 3 years
0 filed late
0 amendments
1.6 avg. days to file
How to read this
A Form 4 transaction code decides everything. P is an open-market purchase and S an open-market sale; those two are the only codes where an insider chose to trade. A is a grant, M an option exercise or vesting, F shares withheld to cover tax, G a gift. Most “insiders dumped billions” headlines are code F and M mechanics.
Sales flagged 10b5-1 run on a plan the insider adopted in advance; since 2023 every Form 4 carries that flag. Buys have historically predicted returns, sales mostly have not, and this page states filings, not advice.