William M Cook insider trades: Mativ Holdings (MATV) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where William reports to the SEC






Open-market buys and sales
18 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 29, 2025 | MATV | ↑ Buy | 5,000 | $5.84 | $29K | Direct | Jun 2, 2025 (4d) |
| Nov 15, 2024 | MATV | ↑ Buy | 2,500 | $12.45 | $31K | Direct | Nov 15, 2024 (0d) |
| Sep 15, 2023 | MATV | ↑ Buy | 1,500 | $15.52 | $23K | Direct | Sep 18, 2023 (3d) |
| Sep 12, 2023 | AXTA | ↑ Buy | 1,500 | $26.81 | $40K | By a Trust | Sep 14, 2023 (2d) |
| Mar 14, 2023 | AXTA | ↑ Buy | 2,500 | $29.55 | $74K | By a Trust | Mar 15, 2023 (1d) |
| Nov 14, 2022 | MATV | ↑ Buy | 1,500 | $29.09 | $44K | Direct | Nov 16, 2022 (2d) |
| Sep 19, 2022 | MATV | ↑ Buy | 1,500 | $24.93 | $37K | Direct | Sep 20, 2022 (1d) |
| Mar 4, 2022 | AXTA | ↑ Buy | 2,000 | $24.64 | $49K | Direct | Mar 7, 2022 (3d) |
| Nov 1, 2021 | IEX | ↓ Sell | 679 | $223.03 | $151K | Direct | Nov 2, 2021 (1d) |
| Aug 26, 2020 | NP | ↑ Buy | 1,000 | $44.68 | $45K | Direct | Aug 27, 2020 (1d) |
| May 28, 2020 | IEX | ↓ Sell | 3,190 | $160.68 | $513K | Direct | May 28, 2020 (0d) |
| Aug 15, 2019 | IEX | ↓ Sell | 4,080 | $161.93 | $661K | Direct | Aug 19, 2019 (4d) |
| Aug 6, 2018 | IEX | ↓ Sell | 1,933 | $152.06 | $294K | Direct | Aug 8, 2018 (2d) |
| May 22, 2018 | IEX | ↓ Sell | 317 | $142.00 | $45K | Direct | May 24, 2018 (2d) |
| Feb 21, 2017 | IEX | ↓ Sell | 1,187 | $93.86 | $111K | Direct | Feb 23, 2017 (2d) |
| Nov 14, 2016 | NP | ↑ Buy | 500 | $81.68 | $41K | Direct | Nov 16, 2016 (2d) |
| Apr 5, 2010 | DCI | ↓ Sell | 13,500 | $46.42 | $627K | Direct | Apr 6, 2010 (1d) |
| Dec 24, 2009 | DCI | ↓ Sell | 8,150 | $43.42 | $354K | Direct | Dec 29, 2009 (5d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About William M Cook's insider trades
William M Cook is an insider at Mativ Holdings (MATV). Since Dec 24, 2009, William has reported 10 open-market purchases worth $414K and 8 sales worth $2.8M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (281 filings), option exercises (35 filings), shares withheld for taxes (30 filings), other transactions (23 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MATV insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.