Gerald G Colella insider trades: Mks (MKSI) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Gerald reports to the SEC
Open-market buys and sales
60 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 27, 2026 | MKSI | ↓ Sell | 20,000 | $333.40 | $6.7M | By The Gerald G. Colella 2019 Trust | May 28, 2026 (1d) |
| Feb 24, 2026 | MKSI | ↓ Sell | 20,000 | $253.43 | $5.1M | By The Gerald G. Colella 2019 Trust | Feb 24, 2026 (0d) |
| Feb 18, 2025 | MKSI | ↓ Sell | 8,000 | $104.53 | $836K | By The Gerald G. Colella 2019 Trust | Feb 19, 2025 (1d) |
| Feb 13, 2025 | CMCO | ↑ Buy | 5,500 | $20.47 | $113K | By Trust | Feb 14, 2025 (1d) |
| Feb 9, 2024 | MKSI | ↓ Sell | 10,000 | $120.00 | $1.2M | By The Gerald G. Colella Living Trust | Feb 12, 2024 (3d) |
| Jan 22, 2024 | MKSI | ↓ Sell | 10,000 | $110.00 | $1.1M | By The Gerald G. Colella Living Trust | Jan 23, 2024 (1d) |
| Aug 31, 2023 | MKSI | ↓ Sell | 10,000 | $100.01 | $1.0M | By The Gerald G. Colella Living Trust | Sep 1, 2023 (1d) |
| Aug 1, 2022 | MKSI | ↑ Buy | 1,000 | $117.51 | $118K | By The Gerald G. Colella Living Trust | Aug 2, 2022 (1d) |
| Nov 4, 2021 | MKSI | ↓ Sell | 3,000 | $155.16 | $465K | By The Gerald G. Colella Living Trust | Nov 8, 2021 (4d) |
| Aug 3, 2020 | MKSI | ↓ Sell | 6,000 | $128.37 | $770K | By The Gerald G. Colella Living Trust | Aug 4, 2020 (1d) |
| May 19, 2020 | MKSI | ↓ Sell | 5,000 | $100.17 | $501K | By The Gerald G. Colella Living Trust | May 20, 2020 (1d) |
| May 1, 2020 | MKSI | ↓ Sell | 5,000 | $96.55 | $483K | By The Gerald G. Colella Living Trust | May 5, 2020 (4d) |
| Feb 4, 2020 | MKSI | ↓ Sell | 7,000 | $113.05 | $791K | By The Gerald G. Colella Living Trust | Feb 5, 2020 (1d) |
| Oct 28, 2019 | MKSI | ↓ Sell | 5,000 | $111.03 | $555K | By The Gerald G. Colella Living Trust | Oct 29, 2019 (1d) |
| Jun 11, 2019 | MKSI | ↓ Sell | 5,000 | $75.82 | $379K | By The Gerald G. Colella Living Trust | Jun 12, 2019 (1d) |
| May 1, 2018 | MKSI | ↓ Sell | 10,000 | $101.92 | $1.0M | By Gerald G. Colella Living Trust | May 2, 2018 (1d) |
| Jan 12, 2018 | MKSI | ↓ Sell | 10,000 | $96.30 | $963K | By Gerald G. Colella Living Trust | Jan 16, 2018 (4d) |
| Dec 14, 2017 | MKSI | ↓ Sell | 5,000 | $95.26 | $476K | By Gerald G. Colella Living Trust | Dec 15, 2017 (1d) |
| May 19, 2017 | MKSI | ↓ Sell | 2,500 | $79.30 | $198K | by Gerald G. Colella Living Trust | May 23, 2017 (4d) |
| Apr 3, 2017 | MKSI | ↓ Sell | 10,000 | $68.61 | $686K | Direct | Apr 4, 2017 (1d) |
| Nov 16, 2016 | MKSI | ↓ Sell | 2,500 | $55.86 | $140K | Direct | Nov 17, 2016 (1d) |
| Sep 13, 2016 | MKSI | ↓ Sell | 5,000 | $47.11 | $236K | Direct | Sep 14, 2016 (1d) |
| Aug 1, 2016 | MKSI | ↓ Sell | 5,000 | $45.71 | $229K | Direct | Aug 2, 2016 (1d) |
| Mar 24, 2016 | MKSI | ↓ Sell | 10,000 | $35.75 | $357K | Direct | Mar 25, 2016 (1d) |
| Apr 27, 2015 | MKSI | ↓ Sell | 5,000 | $36.08 | $180K | Direct | Apr 28, 2015 (1d) |
| Feb 17, 2015 | MKSI | ↓ Sell | 6,000 | $35.30 | $212K | Direct | Feb 19, 2015 (2d) |
| Oct 23, 2014 | MKSI | ↓ Sell | 3,000 | $35.00 | $105K | Direct | Oct 24, 2014 (1d) |
| Aug 15, 2014 | MKSI | ↓ Sell | 3,000 | $33.02 | $99K | Direct | Aug 20, 2014 (5d) |
| Jun 5, 2014 | MKSI | ↓ Sell | 3,000 | $29.50 | $89K | Direct | Jun 6, 2014 (1d) |
| Mar 11, 2013 | MKSI | ↓ Sell | 3,300 | $27.59 | $91K | Direct | Mar 12, 2013 (1d) |
| Mar 1, 2013 | MKSI | ↓ Sell | 4,525 | $27.00 | $122K | Direct | Mar 4, 2013 (3d) |
| Feb 26, 2013 | MKSI | ↓ Sell | 4,850 | $27.25 | $132K | Direct | Feb 28, 2013 (2d) |
| Aug 6, 2012 | MKSI | ↓ Sell | 3,341 | $26.47 | $88K | Direct | Aug 7, 2012 (1d) |
| Mar 6, 2012 | MKSI | ↓ Sell | 6,687 | $28.45 | $190K | Direct | Mar 7, 2012 (1d) |
| Mar 2, 2012 | MKSI | ↓ Sell | 4,592 | $30.04 | $138K | Direct | Mar 5, 2012 (3d) |
| Apr 28, 2011 | MKSI | ↓ Sell | 11,575 | $28.57 | $331K | Direct | Apr 29, 2011 (1d) |
| Mar 30, 2011 | MKSI | ↓ Sell | 28,000 | $33.00 | $924K | Direct | Mar 31, 2011 (1d) |
| Feb 16, 2011 | MKSI | ↓ Sell | 1,634 | $30.24 | $49K | Direct | Feb 17, 2011 (1d) |
| Feb 7, 2011 | MKSI | ↓ Sell | 155,000 | $30.34 | $4.7M | Direct | Feb 8, 2011 (1d) |
| Dec 7, 2010 | MKSI | ↓ Sell | 680 | $21.50 | $15K | Direct | Dec 8, 2010 (1d) |
| Jul 29, 2010 | MKSI | ↓ Sell | 3,330 | $21.38 | $71K | Direct | Aug 2, 2010 (4d) |
| Apr 26, 2010 | MKSI | ↓ Sell | 30,000 | $24.41 | $732K | Direct | Apr 28, 2010 (2d) |
| Mar 11, 2010 | MKSI | ↓ Sell | 3,371 | $19.03 | $64K | Direct | Mar 12, 2010 (1d) |
| Mar 2, 2010 | MKSI | ↓ Sell | 3,770 | $18.32 | $69K | Direct | Mar 3, 2010 (1d) |
| Jul 24, 2009 | MKSI | ↓ Sell | 8,575 | $19.45 | $167K | Direct | Jul 28, 2009 (4d) |
| Apr 24, 2009 | MKSI | ↓ Sell | 8,000 | $15.90 | $127K | Direct | Apr 27, 2009 (3d) |
| Mar 2, 2009 | MKSI | ↓ Sell | 1,503 | $11.89 | $18K | Direct | Mar 4, 2009 (2d) |
| Jul 30, 2008 | MKSI | ↓ Sell | 2,188 | $21.07 | $46K | Direct | Jul 31, 2008 (1d) |
| May 6, 2008 | MKSI | ↓ Sell | 2,187 | $23.60 | $52K | Direct | May 7, 2008 (1d) |
| Mar 6, 2008 | MKSI | ↓ Sell | 3,199 | $20.25 | $65K | Direct | Mar 10, 2008 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MKSI insiders
Open-market trades in the last 12 months
About Gerald G Colella's insider trades
Gerald G Colella is a director at Mks (MKSI). Since Jun 8, 2005, Gerald has reported 2 open-market purchases worth $230K and 58 sales worth $34.7M on SEC Form 4. In the last 12 months: 2 sales ($11.7M).
Their filings also include option exercises (49 filings), shares withheld for taxes (33 filings), grants and awards (32 filings), other transactions (8 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 MKSI insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.