SEC Form 4
Donaldson Company, Inc. (DCI) insider trading
In the 12 months to Oct 23, 2026, 5 DCI insiders reported open-market sales of $8.6M across 6 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $8.6M
- 6 filings · 5 insiders
- Open-market purchases
- $0
- 0 filings
Who traded DCI, and when
- Sale
DCI daily close from Oct 23, 2025 to Oct 23, 2026, between $81.55 and $110.57, last $84.79. 6 sale and 0 purchase filings by 5 insiders, marked at their filing dates. Tod E. Carpenter, Chairman, President and CEO: sold $3.2M across 2 filings, first filed Sep 1, 2026, last Sep 10, 2026. Ajita G. Rajendra, Director: sold $1.8M across 1 filing, first filed Dec 8, 2025, last Dec 8, 2025. James Owens, Director: sold $1.8M across 1 filing, first filed Apr 14, 2026, last Apr 14, 2026. Guillermo Briseno, President: sold $1.8M across 1 filing, first filed Mar 27, 2026, last Mar 27, 2026. Bradley J. Pogalz, Chief Financial Officer: sold $51.8K across 1 filing, first filed Dec 10, 2025, last Dec 10, 2025.
Largest mark · tap a row for others
Tod E. Carpenter · Chairman, President and CEO
Sale $2,912,285
31,968 shares at $91.10 avg
Filed Sep 10, 2026 · traded Sep 4
Close on filing date $88.18
Tod E. Carpenter · Chairman, President and CEO
Chairman, President and CEO
$3.2M soldAjita G. Rajendra · Director
Director
$1.8M soldJames Owens · Director
Director
$1.8M soldGuillermo Briseno · President
President
$1.8M soldBradley J. Pogalz · Chief Financial Officer
Chief Financial Officer
$51.8K soldHas Donaldson Company, Inc.'s CEO sold stock?
Yes. Tod E. Carpenter (CEO) sold 35,000 shares ($3.2M) in Sep 2026.
Open-market trades
6 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Tod E. Carpenter | Chairman, President and CEO | $3.2M | — | 2 | — | |
| Ajita G. Rajendra | Director | $1.8M | — | 1 | — | |
| James Owens | Director | $1.8M | — | 1 | — | |
| Guillermo Briseno | President | $1.8M | — | 1 | — | |
| Bradley J. Pogalz | Chief Financial Officer | $51.8K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Tod E. Carpenter Chairman, President and CEO | Sale | 31,968 | $91.10 | $2.9M | 298,699 | |
traded | Tod E. Carpenter Chairman, President and CEO | Sale | 3,032 | $91.00 | $275.9K | 298,699 | |
traded | James Owens Director | Sale | 19,800 | $89.15 | $1.8M | 22,565 | |
traded | Guillermo Briseno President | Sale | 20,600 | $84.97 | $1.8M | 29,267 | |
traded | Bradley J. Pogalz Chief Financial Officer | Sale | 566 | $91.57 | $51.8K | 434 | |
traded | Ajita G. Rajendra Director | Sale | 19,800 | $92.04 | $1.8M | 43,993 |
GET /stocks/filings/vX/form-4?tickers=DCI&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"DCI"
],
"issuer_cik": "0000029644",
"owner_cik": "0001441791",
"accession_number": "0000029644-26-000077",
"form_type": "4",
"filing_date": "2026-09-10",
"period_of_report": "2026-09-04",
"issuer_name": "DONALDSON Co INC",
"issuer_trading_symbol": "DCI",
"owner_name": "Carpenter Tod E.",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chairman, President and CEO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-04",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 31968,
"transaction_price_per_share": 91.1,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 298699,
"transaction_value": 2912284.8,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"DCI"
],
"issuer_cik": "0000029644",
"owner_cik": "0001441791",
"accession_number": "0000029644-26-000075",
"form_type": "4",
"filing_date": "2026-09-01",
"period_of_report": "2026-08-31",
"issuer_name": "DONALDSON Co INC",
"issuer_trading_symbol": "DCI",
"owner_name": "Carpenter Tod E.",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chairman, President and CEO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-31",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 3032,
"transaction_price_per_share": 91,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 298699,
"transaction_value": 275912,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 47 records
- Option exercises12 records
- Tax withholding5 records
- Grants and awards30 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for DCI every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.