Kathleen M. Mazzarella

CEO · WASTE MANAGEMENT INC

Rank #10,540 SEC EDGAR (United States) ↗ Files from United States

Details

Officer and board memberUtilitiesWMSEC CIK 0001273233

Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Disclosed holdings
$6.1M
1-day change
▼ 1.05%
Positions on file
4
issuers disclosed in Forms 3/4/5 and Schedules 13D/G

Disclosed holdings over time 53 weekly points

What the 3 currently disclosed positions would have been worth at each week’s closing price. A rising line means the shares got more valuable, not that this person bought more.

How the line is built

Share counts are as last reported to the SEC and held constant; only prices move.

2025-09-05$5.6M – $6.6M2026-09-04

Insider activity Apr 24, 2024 – Jan 9, 2026

Kathleen M. Mazzarella is recorded in filings to the U.S. SEC via EDGAR as officer and board member, and reported 11 transactions between Apr 24, 2024 and Jan 9, 2026. The buy and sell totals below count only codes P, S.

Why the other codes are excluded

Share awards (A), shares withheld to pay tax (F), option exercises (M) and gifts (G) also appear in the table, but they are consequences of a pay package or a private transfer, not a decision to buy or sell on the open market. Counting them would turn this into a compensation ranking.

Open-market buys (code P)
None
0 purchases on file
Open-market sales (code S)
None
0 sales on file
All reported transactions
11
every code, including awards and exercises
Pattern
Bought and sold in similar amounts
last 12 months of the window

Reported transactions

Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 14 most recent rows are grouped into 12 lines by date, company and transaction type — open a line to see every lot with its own source link.

How to read this list

Every row is one line of one Form 4 or Form 5, with the filing it came from. Where the record carries no price at all we leave the cell empty instead of guessing one.

The shares and money on a grouped line add up only the lots listed inside that line, and only when every one of them carries the figure. Where a group mixes more than one reporting currency we leave the money blank rather than convert — no source publishes the rate that conversion would need.

  1. Core & Main, Inc. CNM A Grant or awardnot a buy/sell decisionreported at zero 2,799 shares $0 at $0.00 SEC filing ↗
  2. WASTE MANAGEMENT INC WM A Grant or awardnot a buy/sell decision 1,314 shares $290.0K at $220.71 SEC filing ↗
  3. Cigna Group CI A Grant or awardnot a buy/sell decisionreported at zero 782 shares $0 at $0.00 SEC filing ↗
  4. GRAYBAR ELECTRIC CO INC GRAYBAR J Other acquisition or disposition × 2not a buy/sell decision 19,230 shares $384.6K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    9,615 $20.00 $192.3K SEC filing ↗
    9,615 $20.00 $192.3K SEC filing ↗
  5. WASTE MANAGEMENT INC WM A Grant or awardnot a buy/sell decision 1,063 shares $241.8K at $227.45 SEC filing ↗
  6. Core & Main, Inc. CNM A Grant or awardnot a buy/sell decisionreported at zero 2,189 shares $0 at $0.00 SEC filing ↗
  7. Cigna Group CI A Grant or awardnot a buy/sell decisionreported at zero 638 shares $0 at $0.00 SEC filing ↗
  8. WASTE MANAGEMENT INC WM A Grant or awardnot a buy/sell decision 674 shares $140.0K at $207.78 SEC filing ↗
  9. GRAYBAR ELECTRIC CO INC GRAYBAR J Other acquisition or disposition × 2not a buy/sell decision 17,976 shares $359.5K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    8,988 $20.00 $179.8K SEC filing ↗
    8,988 $20.00 $179.8K SEC filing ↗
  10. WASTE MANAGEMENT INC WM A Grant or awardnot a buy/sell decision 651 shares $140.0K at $215.07 SEC filing ↗
  11. Core & Main, Inc. CNM A Grant or awardnot a buy/sell decisionreported at zero 2,449 shares $0 at $0.00 SEC filing ↗
  12. Cigna Group CI A Grant or awardnot a buy/sell decisionreported at zero 539 shares $0 at $0.00 SEC filing ↗

Disclosed holdings

Shares is the amount on the form; value is that amount times the closing price shown. Rows with no closing price are left blank, so they may add up to less than the headline figure.

What is not counted here

Each row is one filing you can open. Private companies, real estate, bonds and crypto are not in SEC insider filings and are therefore not counted here.

Equity positions disclosed to the SEC, with the source filing behind each row.
Issuer Ticker Security Shares Close Value Form Reported Filing
WASTE MANAGEMENT INC WM Common Stock (indirect) 16,962 $218.99 $3.7M 4 EDGAR ↗
Cigna Group CI Common Stock, $.01 Par Value 6,109 $282.52 $1.7M 4 EDGAR ↗
Core & Main, Inc. CNM Class A Common Stock 14,040 $44.32 $622.3K 4 EDGAR ↗
GRAYBAR ELECTRIC CO INC GRAYBAR Voting Trust Interests evidencing common stock 288,350 — — 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Kathleen M. Mazzarella reports shares.

Sharing a filing does not mean they work together day to day — it means both names appear on the same issuer’s insider record.

Sources

The filings linked in the tables above are the sources for every figure on this page.

Think a number here is wrong? Open the linked filing and compare — how to report it.

Profile record last refreshed Sep 8, 2026.