William B. Plummer
Director · WASTE MANAGEMENT INC
Individual
- 2025
- May 18, 2026
- 4
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies William B. Plummer files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- James C. Fish Jr. - $8.47M in WM purchases and sales in the last 12 months
- Michael J. Watson - $4.32M in WM purchases and sales in the last 12 months
- John J. Morris - $3.13M in WM purchases and sales in the last 12 months
- Donald J. Smith - $3.00M in WM purchases and sales in the last 12 months
- Rafael Carrasco - $2.76M in WM purchases and sales in the last 12 months
- Tara J. Hemmer - $1.32M in WM purchases and sales in the last 12 months
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Frequently asked questions
Who is William B. Plummer?
William B. Plummer is a corporate insider, tracked as Director of WASTE MANAGEMENT INC (WM). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did William B. Plummer last file a Form 4?
The most recent primary Form 4 on record is dated 18 May 2026, one of 4 filings going back to 2025.
