Mark E Tomkins insider trades: Trinseo (TSE) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Mark reports to the SEC
Open-market buys and sales
12 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 13, 2024 | TSE | ↓ Sell | 11,142 | $2.54 | $28K | Direct | Aug 14, 2024 (1d) |
| Nov 11, 2020 | TMX | ↓ Sell | 2,000 | $48.00 | $96K | Direct | Nov 13, 2020 (2d) |
| Aug 21, 2020 | GRA | ↑ Buy | 2,000 | $41.73 | $83K | Direct | Aug 24, 2020 (3d) |
| Mar 9, 2020 | SERV | ↑ Buy | 1,000 | $33.66 | $34K | Direct | Mar 10, 2020 (1d) |
| Mar 5, 2020 | SERV | ↑ Buy | 1,000 | $35.71 | $36K | Direct | Mar 5, 2020 (0d) |
| Jun 12, 2019 | SERV | ↓ Sell | 2,444 | $53.94 | $132K | Direct | Jun 13, 2019 (1d) |
| Jun 12, 2019 | SERV | ↓ Sell | 2,444 | $53.94 | $132K | Direct | Jun 13, 2019 (1d) |
| Feb 10, 2015 | GRA | ↓ Sell | 2,574 | $98.39 | $253K | Direct | Feb 10, 2015 (0d) |
| Nov 25, 2013 | GRA | ↓ Sell | 1,305 | $97.11 | $127K | Direct | Nov 26, 2013 (1d) |
| May 13, 2011 | CVI | ↓ Sell | 21,259 | $19.69 | $419K | Direct | May 16, 2011 (3d) |
| May 13, 2011 | CVI | ↓ Sell | 4,167 | $19.73 | $82K | By son | May 16, 2011 (3d) |
| Mar 6, 2009 | GRA | ↑ Buy | 12,000 | $4.00 | $48K | Direct | Mar 6, 2009 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Mark E Tomkins's insider trades
Mark E Tomkins is an insider at Trinseo (TSE). Since Mar 6, 2009, Mark has reported 4 open-market purchases worth $201K and 8 sales worth $1.3M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (27 filings), shares withheld for taxes (7 filings), shares returned to the company (1 filing), gifts (1 filing). 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 TSE insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.