As of the latest Form 4 filed Jul 7, 2026.
What Donaldson Company Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 20 most recent filings for DCI.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-07 | 2026-07-03 | Smiley Jacinth C Director | AAward | +267.00 | $89.09 | $23.8K | No | Form 4 ↗ |
| 2026-07-07 | 2026-07-03 | Rautio Trudy A. Director | AAward | +334.00 | $89.09 | $29.8K | No | Form 4 ↗ |
| 2026-07-07 | 2026-07-03 | Owens James Director | AAward | +267.00 | $89.09 | $23.8K | No | Form 4 ↗ |
| 2026-07-07 | 2026-07-03 | Hilger Christopher M. Director | AAward | +400.00 | $89.09 | $35.6K | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-14 | Owens James Director | SSale | −6.60K | $89.21 | $589K | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-14 | Owens James, Director | MExercise | +6.60K | $48.96 | $323K | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-14 | Owens James, Director | SSale | −7.15K | $89.21 | $638K | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-14 | Owens James, Director | MExercise | +7.15K | $42.26 | $302K | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | Owens James, Director | SSale | −5.92K | $89.02 | $527K | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | Owens James, Director | MExercise | +5.92K | $42.26 | $250K | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-10 | Owens James, Director | SSale | −126.00 | $88.82 | $11.2K | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-10 | Owens James, Director | MExercise | +126.00 | $42.26 | $5.32K | No | Form 4 ↗ |
| 2026-04-06 | 2026-04-03 | Smiley Jacinth C Director | AAward | +279.00 | $85.23 | $23.8K | No | Form 4 ↗ |
| 2026-04-06 | 2026-04-03 | Rautio Trudy A. Director | AAward | +349.00 | $85.23 | $29.7K | No | Form 4 ↗ |
| 2026-04-06 | 2026-04-03 | Owens James Director | AAward | +279.00 | $85.23 | $23.8K | No | Form 4 ↗ |
| 2026-04-06 | 2026-04-03 | Hilger Christopher M. Director | AAward | +418.00 | $85.23 | $35.6K | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-26 | Briseno Guillermo President | SSale | −8.60K | $84.97 | $731K | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-26 | Briseno Guillermo, President | MExercise | +8.60K | $45.43 | $391K | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-26 | Briseno Guillermo, President | SSale | −12.0K | $84.97 | $1.02M | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-26 | Briseno Guillermo, President | MExercise | +12.0K | $42.72 | $513K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also DCI’s full analysis or the market-wide insider trading feed. The tabs above jump to DCI’s other SEC data.
Source: SEC Form 4 filings for DCI, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.