DM
Insider
David MacLennan
DirectorDavid MacLennan (Director) filed 5 Form 4 reports in the trailing twelve months (5 purchases, 0 sales), most often in Ecolab Inc. (ECL). Across 5 priced purchase filings, the average 21-session return was +3.2% from execution and +3.8% from disclosure (delay-adjusted; derived). The largest single filing was $251K of ECL (1,000 sh × $250.65, as filed), executed May 13.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
+3.2%
avg across 5 priced filings
Delay-adjustediThe same average, entered at disclosure dates
+3.8%
same 5 filings, from disclosure
Filings, ttm
5
5 buys · 0 sells
Median delay
1d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$1.0M
shares × price, as filed
Last traded
May 13
Filed May 14
Median ADV $456.7M across their filed names
Impact on $10,000 · 12M
$11,550 (+15.5%)
S&P 500 $11,725 (+17.2%) · 1.7 pts behind
David MacLennan
S&P 500
Compounded across filings from disclosure dates · past 12 months
Open performance→Volume by month
Buys $1.6M
Sells $0
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Basic Materials
3 filings
Industrials
2 filings
Sector per market data · by filing · past 12 months
Most traded names
ECLRecent filings
ECLPURCHASE
Ecolab Inc.
View filing →
$251K1,000 sh × $250.65
Exec May 13
Filed May 14 · 5:03 PM ET ECLPURCHASE Ecolab Inc. View filing → $206K
800 sh × $256.91
Exec May 4
Filed May 5 · 5:27 PM ET CATPURCHASE Caterpillar Inc. View filing → $219K
250 sh × $876.84
Exec May 4
Filed May 5 · 2:00 PM ET ECLPURCHASE Ecolab Inc. View filing → $193K
750 sh × $257.60
Exec Dec 8 2025
Filed Dec 8 2025 · 4:25 PM ET CATPURCHASE Caterpillar Inc. View filing → $171K
300 sh × $568.86
Exec Nov 6 2025
Filed Nov 6 2025 · 3:15 PM ET ECLPURCHASE Ecolab Inc. View filing → $167K
600 sh × $278.51
Exec Aug 13 2025
Filed Aug 15 2025 · 4:43 PM ET CATPURCHASE Caterpillar Inc. View filing → $120K
375 sh × $320.70
Exec May 7 2025
Filed May 8 2025 · 5:30 PM ET ECLPURCHASE Ecolab Inc. View filing → $126K
500 sh × $251.75
Exec May 7 2025
Filed May 9 2025 · 5:30 PM ET More filings →