William M. Cook

Board Member · Axalta Coating Systems Ltd.

Rank #20,150 SEC EDGAR (United States) ↗ Files from United States

Details

Member of the boardChemicalsAXTASEC CIK 0001226577

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

Disclosed holdings
$2.1M
1-day change
▼ 0.27%
Positions on file
2
issuers disclosed in Forms 3/4/5 and Schedules 13D/G

Disclosed holdings over time 53 weekly points

What the 2 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$1.5M – $2.2M2026-09-04

Insider activity Nov 15, 2024 – Mar 4, 2026

William M. Cook is recorded in filings to the U.S. SEC via EDGAR as member of the board, and reported 4 transactions between Nov 15, 2024 and Mar 4, 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)
$60.3K
2 purchases on file priced rows only
Open-market sales (code S)
None
0 sales on file
All reported transactions
4
every code, including awards and exercises
Pattern
Net buyer in the final 12 months of the window
last 12 months of the window

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

4 insiders bought Mativ Holdings, Inc. (MATV) shares worth $350,400 between May 29, 2025 and Jun 6, 2025

Cluster buying

4 different insiders made 4 open-market purchases of this company’s shares within a short window. Each row below is one reported trade.

4 insiders bought Mativ Holdings, Inc. (MATV) shares worth $350,400 between May 29, 2025 and Jun 6, 2025
Date Insider Transaction Shares Price Value Filing
May 29, 2025 William M. Cook P Open-market purchase 5,000 held after: 26,436 $5.84 $29,200 SEC filing ↗
May 29, 2025 Kimberly E Ritrievi P Open-market purchase 10,000 held after: 30,640 $5.88 $58,800 SEC filing ↗
May 29, 2025 Shruti Singhal P Open-market purchase 40,000 held after: 56,533 $5.76 $230,400 SEC filing ↗
Jun 6, 2025 John K Stipancich P Open-market purchase 5,000 held after: 16,113 $6.40 $32,000 SEC filing ↗

Total of the rows above: $350,400, in the currency the filings report.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Reported transactions

Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 4 most recent rows are grouped into 4 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. Axalta Coating Systems Ltd. AXTA M Option exercise or conversionnot a buy/sell decisionreported at zero 5,832 shares $0 at $0.00 SEC filing ↗
  2. Mativ Holdings, Inc. MATV P Open-market purchase 5,000 shares $29.2K at $5.84 SEC filing ↗
  3. Axalta Coating Systems Ltd. AXTA M Option exercise or conversionnot a buy/sell decisionreported at zero 6,157 shares $0 at $0.00 SEC filing ↗
  4. Mativ Holdings, Inc. MATV P Open-market purchase 2,500 shares $31.1K at $12.45 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
Axalta Coating Systems Ltd. AXTA Common Shares 49,959 $35.78 $1.8M 4 EDGAR ↗
Mativ Holdings, Inc. MATV Common Stock 26,436 $12.66 $334.7K 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where William M. Cook 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.