MacLennan David
Director · ECOLAB INC.
Every open-market stock purchase MacLennan David has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. Insiders sell for many reasons, but they buy with their own money for one — this page tracks where those buys landed inside insider clusters and how the prices paid compare to where the stock trades now.
Where the buys stand today
- ECL+12.3% vs price paidECOLAB INC.
8 purchases totalling $1.4M at an average of $252.75 per share; the stock last traded at $283.72. See all insider buying in ECL →
Avg price paid$252.75Latest price$283.72Market cap$79.9B - CAT+103.6% vs price paidCATERPILLAR INC
4 purchases totalling $678.8K at an average of $476.37 per share; the stock last traded at $969.92. See all insider buying in CAT →
Avg price paid$476.37Latest price$969.92Market cap$446.7B
Cluster participation
Buys that landed within days of other insiders buying the same stock — the pattern this site exists to catch.
All reported buys
| Date | Ticker | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| May 13, 2026 | ECLcluster | 1,000 | $250.65 | $250.7K | SEC ↗ |
| May 4, 2026 | ECLcluster | 800 | $256.91 | $205.5K | SEC ↗ |
| May 4, 2026 | 250 | $876.84 | $219.2K | SEC ↗ | |
| Dec 8, 2025 | 750 | $257.60 | $193.2K | SEC ↗ | |
| Nov 6, 2025 | 300 | $568.86 | $170.7K | SEC ↗ | |
| Aug 13, 2025 | 600 | $278.51 | $167.1K | SEC ↗ | |
| May 7, 2025 | 500 | $251.75 | $125.9K | SEC ↗ | |
| May 7, 2025 | CATcluster | 375 | $320.70 | $120.3K | SEC ↗ |
| Feb 13, 2025 | 400 | $264.51 | $105.8K | SEC ↗ | |
| Aug 2, 2024 | 650 | $240.41 | $156.3K | SEC ↗ | |
| May 3, 2024 | 650 | $227.37 | $147.8K | SEC ↗ | |
| May 3, 2024 | CATcluster | 500 | $337.39 | $168.7K | SEC ↗ |
Get alerted the next time MacLennan David — or any insider — buys
We watch every Form 4 as it hits SEC EDGAR and alert you when insiders cluster into the same stock.
About this data
Figures are parsed from MacLennan David's Form 4 filings on SEC EDGAR (CIK 1498535) and cover open-market purchases (transaction code P) — grants, option exercises, and sales are excluded, which is why totals here can differ from raw filing counts. Every row links to its source document.
This page is informational and reflects public filing data. It is not investment advice.