---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-114641"
form_type: "8-K"
ticker: "WM"
cik: "0000823768"
company_name: "WASTE MANAGEMENT INC"
filed_at: "2025-11-20T23:59:59+00:00"
generated_at: "2026-05-16T18:17:37.063491+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Waste Management imposes blackout period on insider trading due to plan recordkeeper change

## Summary
- Blackout period from Dec 24, 2025 (4:00 PM ET) to ~week of Jan 18, 2026 for Retirement Savings Plan participants.
- Directors and executive officers prohibited from trading WM equity securities during blackout under Sarbanes-Oxley.
- Plan recordkeeper change effective Jan 1, 2026; participants cannot change contributions, investments, or get loans/distributions.
- Company will be in closed trading window per Insider Trading Policy throughout blackout duration.

## SEC filing metadata
- accession: 0001104659-25-114641
- form_type: 8-K
- ticker: WM
- cik: 0000823768
- company_name: WASTE MANAGEMENT INC
- filed_at: 2025-11-20T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.04, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/823768/000110465925114641/0001104659-25-114641-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/823768/000110465925114641/tm2531866d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-114641
- JSON: https://secwatch.observer/filing/0001104659-25-114641.json
- Plain text: https://secwatch.observer/filing/0001104659-25-114641.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.