R Tony Tripeny insider trades: Mesa Laboratories (MLAB) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where R reports to the SEC
Open-market buys and sales
22 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 13, 2026 | MLAB | ↑ Buy | 900 | $113.69 | $102K | Direct | Aug 17, 2026 (4d) |
| Sep 1, 2023 | ORGN | ↑ Buy | 73,000 | $1.37 | $100K | By Trust | Sep 6, 2023 (5d) |
| Aug 9, 2022 | MLAB | ↑ Buy | 500 | $200.00 | $100K | Direct | Aug 9, 2022 (0d) |
| Mar 10, 2021 | GLW | ↓ Sell | 44,795 | $38.90 | $1.7M | Direct | Mar 10, 2021 (0d) |
| Sep 16, 2020 | GLW | ↓ Sell | 21,685 | $33.07 | $717K | Direct | Sep 17, 2020 (1d) |
| Aug 2, 2018 | GLW | ↓ Sell | 67,659 | $33.00 | $2.2M | Direct | Aug 3, 2018 (1d) |
| May 1, 2017 | GLW | ↓ Sell | 49,001 | $29.00 | $1.4M | Direct | May 3, 2017 (2d) |
| Feb 15, 2017 | GLW | ↓ Sell | 65,666 | $27.23 | $1.8M | Direct | Feb 17, 2017 (2d) |
| Nov 17, 2016 | GLW | ↓ Sell | 16,333 | $23.80 | $389K | Direct | Nov 17, 2016 (0d) |
| Aug 15, 2016 | GLW | ↓ Sell | 15,000 | $23.00 | $345K | Direct | Aug 17, 2016 (2d) |
| Jul 29, 2016 | GLW | ↓ Sell | 7,500 | $22.27 | $167K | Direct | Aug 1, 2016 (3d) |
| Jun 7, 2016 | GLW | ↓ Sell | 7,500 | $21.17 | $159K | Direct | Jun 8, 2016 (1d) |
| Feb 2, 2015 | GLW | ↓ Sell | 24,000 | $24.13 | $579K | Direct | Feb 4, 2015 (2d) |
| Feb 10, 2014 | GLW | ↓ Sell | 41,000 | $18.43 | $756K | Direct | Feb 12, 2014 (2d) |
| Nov 21, 2013 | GLW | ↓ Sell | 22,750 | $17.13 | $390K | Direct | Nov 22, 2013 (1d) |
| Feb 9, 2011 | GLW | ↓ Sell | 40,706 | $22.69 | $924K | Direct | Feb 9, 2011 (0d) |
| Nov 8, 2010 | GLW | ↓ Sell | 11,000 | $18.96 | $209K | Direct | Nov 10, 2010 (2d) |
| Feb 16, 2010 | GLW | ↓ Sell | 13,108 | $18.00 | $236K | Direct | Feb 17, 2010 (1d) |
| Jul 31, 2009 | GLW | ↓ Sell | 7,788 | $17.00 | $132K | Direct | Jul 31, 2009 (0d) |
| Sep 7, 2007 | GLW | ↓ Sell | 3,372 | $25.05 | $84K | Direct | Sep 10, 2007 (3d) |
| May 21, 2007 | GLW | ↓ Sell | 13,949 | $24.52 | $342K | Direct | May 23, 2007 (2d) |
| Feb 14, 2007 | GLW | ↓ Sell | 11,686 | $22.29 | $260K | Direct | Feb 15, 2007 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MLAB insiders
Open-market trades in the last 12 months
About R Tony Tripeny's insider trades
R Tony Tripeny is a director at Mesa Laboratories (MLAB). Since Feb 14, 2007, R has reported 3 open-market purchases worth $302K and 19 sales worth $12.9M on SEC Form 4. In the last 12 months: 1 buy ($102K).
Their filings also include grants and awards (75 filings), option exercises (48 filings), shares withheld for taxes (33 filings), other transactions (5 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 MLAB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.