Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

DONALDSON Co INC

DCI · NYSE · CIK 0000029644 · Industrials · Specialty Industrial Machinery

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

22 Form 4 transaction lines observed in the same window
2 sales · 20 option, withholding, award, gift or other lines

Last qualifying purchase2023-04-11 · Hilger Christopher M. · $200.0K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Carpenter Tod E.Chairman, President and CEO
○▼○▼○○
Rautio Trudy A.Director
○○
Owens JamesDirector
○○
Hilger Christopher M.Director
○○
Lewis Richard BrentPresident
○○
Driesen Bart C.President
○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 3 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2023-04-11 · Hilger Christopher M..

Recent Form 4 activity

0Purchases
11Sales
47Other Form 4 lines
33SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING2 sale line(s) · context only
OTHER20 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-1.5%
3M
-0.8%
6M
+2.7%
12M
—

Volatility & liquidity

Volatility
25.9%
Beta
—
Avg daily value
—

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
11.7%
ROE
25.7%
Industry
Specialty Industrial Machinery

Market data

Price data up to: 2026-10-01 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2026-07-31 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
3,358,008
Previous report
3,145,580
Avg daily volume
732,303
Days to cover
4.6

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2023-04-11Hilger Christopher M.Purchase (P)Common Stock3,186USD 62.76USD 199,953SEC filing ↗

Form 4 evidence

58 transaction lines in the latest 365-day window; 490 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-02Smiley Jacinth CAward / grant (A)Common Stock268USD 88.65USD 23,758SEC filing ↗
2026-10-02Rautio Trudy A.Award / grant (A)Common Stock336USD 88.65USD 29,786SEC filing ↗
2026-10-02Owens JamesAward / grant (A)Common Stock268USD 88.65USD 23,758SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-02Smiley Jacinth CAward / grant (A)Common Stock268USD 88.65USD 23,758SEC filing ↗
2026-10-02Rautio Trudy A.Award / grant (A)Common Stock336USD 88.65USD 29,786SEC filing ↗
2026-10-02Owens JamesAward / grant (A)Common Stock268USD 88.65USD 23,758SEC filing ↗
2026-10-02Hilger Christopher M.Award / grant (A)Common Stock402USD 88.65USD 35,637SEC filing ↗
2026-09-24Lewis Richard BrentTax withholding (F)Common Stock149USD 86.60USD 12,903SEC filing ↗
2026-09-24Lewis Richard BrentAward / grant (A)Common Stock6,340USD 0.00USD 0SEC filing ↗
2026-09-24Driesen Bart C.Tax withholding (F)Common Stock2,661USD 86.60USD 230,443SEC filing ↗
2026-09-24Driesen Bart C.Award / grant (A)Common Stock4,465USD 0.00USD 0SEC filing ↗
2026-09-24Carpenter Tod E.Tax withholding (F)Common Stock18,761USD 86.60USD 1,624,703SEC filing ↗
2026-09-24Carpenter Tod E.Award / grant (A)Common Stock38,131USD 0.00USD 0SEC filing ↗
2026-09-24Becker Amy CTax withholding (F)Common Stock2,944USD 86.60USD 254,950SEC filing ↗
2026-09-24Becker Amy CAward / grant (A)Common Stock5,983USD 0.00USD 0SEC filing ↗
2026-09-04Carpenter Tod E.Sale (S)Common Stock31,968USD 91.10USD 2,912,285SEC filing ↗
2026-09-04Carpenter Tod E.Option exercise / conversion (M)Common Stock31,968USD 42.72USD 1,365,673SEC filing ↗
2026-08-31Carpenter Tod E.Sale (S)Common Stock3,032USD 91.00USD 275,912SEC filing ↗
2026-08-31Carpenter Tod E.Option exercise / conversion (M)Common Stock3,032USD 42.72USD 129,527SEC filing ↗
2026-08-27Pogalz Bradley J.Option exercise / conversion (M)Common Stock3,000USD 42.72USD 128,160SEC filing ↗
2026-08-27Pogalz Bradley J.Tax withholding (F)Common Stock2,129USD 91.84USD 195,527SEC filing ↗
2026-07-03Smiley Jacinth CAward / grant (A)Common Stock267USD 89.09USD 23,787SEC filing ↗
2026-07-03Rautio Trudy A.Award / grant (A)Common Stock334USD 89.09USD 29,756SEC filing ↗
2026-07-03Owens JamesAward / grant (A)Common Stock267USD 89.09USD 23,787SEC filing ↗
2026-07-03Hilger Christopher M.Award / grant (A)Common Stock400USD 89.09USD 35,636SEC filing ↗
2026-04-14Owens JamesSale (S)Common Stock13,753USD 89.21USD 1,226,905SEC filing ↗
2026-04-14Owens JamesOption exercise / conversion (M)Common Stock13,753USD 45.48USD 625,422SEC filing ↗
2026-04-13Owens JamesSale (S)Common Stock5,921USD 89.02USD 527,087SEC filing ↗
2026-04-13Owens JamesOption exercise / conversion (M)Common Stock5,921USD 42.26USD 250,221SEC filing ↗
2026-04-10Owens JamesSale (S)Common Stock126USD 88.82USD 11,191SEC filing ↗
2026-04-10Owens JamesOption exercise / conversion (M)Common Stock126USD 42.26USD 5,325SEC filing ↗
2026-04-03Smiley Jacinth CAward / grant (A)Common Stock279USD 85.23USD 23,779SEC filing ↗
2026-04-03Rautio Trudy A.Award / grant (A)Common Stock349USD 85.23USD 29,745SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerDCI
CIK0000029644
SectorIndustrials
IndustrySpecialty Industrial Machinery Yahoo Finance
SEC SIC3564 Industrial & Commercial Fans & Blowers & Air Purifing Equip
ExchangeNYSE

Data coverage

Local Form 4 history490 transaction lines from 2020-01-02 to 2026-10-02
1 P purchase lines · 96 S sale lines · 393 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.