Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>

Common stock purchase or sale:
Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
2022-06-17 Sale | 2022-06-22 2:46 pm | MESA LABORATORIES INC | MLAB | Owens Gary M CEO | 1,756 | $188.22 | $330,521 | 24,324 (Direct) | View |
2022-06-17 Sale | 2022-06-22 2:25 pm | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 392 | $188.22 | $73,784 | 1,150 (Direct) | View |
2022-06-17 Sale | 2022-06-22 2:04 pm | MESA LABORATORIES INC | MLAB | DINOIA GREGORY VP | 555 | $188.22 | $104,464 | 4,024 (Direct) | View |
2022-06-17 Sale | 2022-06-22 1:38 pm | MESA LABORATORIES INC | MLAB | Sakys John CFO | 722 | $188.22 | $135,898 | 9,170 (Indirect Direct) | View |
2022-06-07 Sale(A) | 2022-06-13 09:30 am | MESA LABORATORIES INC | Sullivan John James Director | 5,192 | $207.76 | $1,078,690 | 113,737 (Indirect Direct) | View | |
2022-06-07 Sale | 2022-06-13 09:09 am | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 5,192 | $207.76 | $1,078,690 | 113,737 (Indirect Direct) | View |
2022-04-20 Sale | 2022-04-22 1:17 pm | MESA LABORATORIES INC | MLAB | Sakys John CFO | 72 | $250.44 | $18,032 | 34,173 (Indirect Direct) | View |
2022-03-23 Sale | 2022-03-25 1:57 pm | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,600 | $251.23 | $401,970 | 34,185 (Direct) | View |
2022-02-15 Sale | 2022-02-16 2:10 pm | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 5,192 | $259.42 | $1,346,909 | 109,741 (Indirect Direct) | View |
2022-01-03 Sale | 2022-01-04 11:12 am | MESA LABORATORIES INC | MLAB | Schmieder John Bradley Director | 1,000 | $327.77 | $327,770 | 73,036 (Direct) | View |
2021-12-14 Sale | 2021-12-15 10:53 am | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 1,659 | $325.02 | $539,208 | 23,445 (Direct) | View |
2021-12-10 Sale | 2021-12-10 7:14 pm | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,758 | $324.74 | $570,893 | 65,656 (Direct) | View |
2021-12-02 Sale | 2021-12-06 12:07 pm | MESA LABORATORIES INC | MLAB | GUILLEMIN EVAN Director | 2,320 | $310.61 | $720,615 | 40,188 (Direct) | View |
2021-11-15 Sale | 2021-11-16 11:47 am | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 5,192 | $308.02 | $1,599,240 | 121,433 (Indirect Direct) | View |
2021-11-11 Sale | 2021-11-12 11:20 am | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,000 | $317.12 | $317,120 | 37,543 (Direct) | View |
2021-11-08 Sale | 2021-11-09 10:44 am | MESA LABORATORIES INC | MLAB | KELLY DAVID M Director | 18 | $324.07 | $5,833 | 3,169 (Direct) | View |
2021-11-08 Sale | 2021-11-09 10:04 am | MESA LABORATORIES INC | MLAB | DINOIA GREGORY VP | 280 | $323.72 | $90,642 | 2,693 (Direct) | View |
2021-10-20 Sale | 2021-10-25 09:54 am | MESA LABORATORIES INC | MLAB | Sakys John CFO | 2,000 | $309.86 | $619,720 | 38,543 (Direct) | View |
2021-10-01 Sale | 2021-10-04 10:22 am | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 1,250 | $304.48 | $380,600 | 51,857 (Indirect Direct) | View |
2021-09-10 Sale | 2021-09-10 7:23 pm | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,400 | $270.21 | $378,294 | 40,543 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
2022-07-05 Exercise | 2022-07-06 1:05 pm | 2016-04-01 2023-04-01 | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 18,576 | $0 | 89,350 (Direct) | View |
2022-07-05 Exercise | 2022-07-06 1:05 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 15,000 | $122.66 | 89,350 (Direct) | View |
2022-07-05 Exercise | 2022-07-06 1:05 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 3,576 | $70.56 | 89,350 (Direct) | View |
2022-06-17 Tax Withholding | 2022-06-22 2:46 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Owens Gary M CEO | 740 | $185.57 | 24,324 (Direct) | View |
2022-06-17 Option Award | 2022-06-22 2:46 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Owens Gary M CEO | 4,055 | $0 | 24,324 (Direct) | View |
2022-06-17 Exercise | 2022-06-22 2:46 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Owens Gary M CEO | 3,370 | $0 | 24,324 (Direct) | View |
2022-06-17 Tax Withholding | 2022-06-22 2:25 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 155 | $185.57 | 1,150 (Direct) | View |
2022-06-17 Option Award | 2022-06-22 2:25 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 868 | $0 | 1,150 (Direct) | View |
2022-06-17 Exercise | 2022-06-22 2:25 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 676 | $0 | 1,150 (Direct) | View |
2022-06-17 Tax Withholding | 2022-06-22 2:04 pm | N/A N/A | MESA LABORATORIES INC | MLAB | DINOIA GREGORY VP | 173 | $185.57 | 4,024 (Direct) | View |
2022-06-17 Option Award | 2022-06-22 2:04 pm | N/A N/A | MESA LABORATORIES INC | MLAB | DINOIA GREGORY VP | 1,278 | $0 | 4,024 (Direct) | View |
2022-06-17 Exercise | 2022-06-22 2:04 pm | N/A N/A | MESA LABORATORIES INC | MLAB | DINOIA GREGORY VP | 782 | $0 | 4,024 (Direct) | View |
2022-06-17 Tax Withholding | 2022-06-22 1:38 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 173 | $185.57 | 9,170 (Direct) | View |
2022-06-17 Option Award | 2022-06-22 1:38 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,667 | $0 | 9,170 (Direct) | View |
2022-06-17 Exercise | 2022-06-22 1:38 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 392 | $0 | 9,170 (Direct) | View |
2022-06-15 Option Award | 2022-06-17 4:52 pm | 2022-06-30 N/A | MESA LABORATORIES INC | MLAB | DINOIA GREGORY VP | 548 | $0 | 548 (Direct) | View |
2022-06-15 Option Award | 2022-06-17 4:44 pm | 2023-06-15 N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 7,581 | $0 | 34,180 (Direct) | View |
2022-06-15 Option Award | 2022-06-17 4:33 pm | 2023-06-15 N/A | MESA LABORATORIES INC | MLAB | Owens Gary M CEO | 23,321 | $0 | 90,841 (Direct) | View |
2022-06-15 Option Award | 2022-06-17 1:12 pm | 2023-06-15 N/A | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 5,456 | $0 | 12,431 (Direct) | View |
2022-06-15 Exercise | 2022-06-16 6:17 pm | N/A N/A | MESA LABORATORIES INC | MLAB | GUILLEMIN EVAN Director | 30 | $0 | 29,818 (Direct) | View |
2022-06-15 Exercise | 2022-06-16 5:55 pm | N/A N/A | MESA LABORATORIES INC | MLAB | MESA LABORATORIES INC Director | 30 | $0 | 29,818 (Direct) | View |
2022-06-15 Exercise | 2022-06-16 5:47 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Schmieder John Bradley Director | 30 | $0 | 71,075 (Direct) | View |
2022-06-15 Tax Withholding | 2022-06-16 5:18 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 14 | $185.7 | 54,904 (Direct) | View |
2022-06-15 Exercise | 2022-06-16 5:18 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 30 | $0 | 54,904 (Direct) | View |
2022-06-07(A) Exercise | 2022-06-13 09:30 am | 2016-04-01 2023-04-01 | MESA LABORATORIES INC | Sullivan John James Director | 6,193 | $0 | 113,737 (Direct) | View | |
2022-06-07(A) Exercise | 2022-06-13 09:30 am | N/A N/A | MESA LABORATORIES INC | Sullivan John James Director | 6,193 | $70.56 | 113,737 (Direct) | View | |
2022-06-07 Exercise | 2022-06-13 09:09 am | 2016-04-01 2023-04-01 | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 6,193 | $0 | 113,737 (Direct) | View |
2022-06-07 Exercise | 2022-06-13 09:09 am | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 6,193 | $70.56 | 113,737 (Direct) | View |
2022-04-20 Exercise | 2022-04-22 1:17 pm | 2014-04-01 2023-04-01 | MESA LABORATORIES INC | MLAB | Sakys John CFO | 72 | $0 | 34,173 (Direct) | View |
2022-04-20 Exercise | 2022-04-22 1:17 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 72 | $51.85 | 34,173 (Direct) | View |
2022-03-23 Exercise | 2022-03-25 1:57 pm | 2014-04-01 2023-04-01 | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,600 | $0 | 34,185 (Direct) | View |
2022-03-23 Exercise | 2022-03-25 1:57 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,600 | $51.85 | 34,185 (Direct) | View |
2022-02-17 Exercise | 2022-02-22 10:21 am | 2016-04-01 2023-04-01 | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 1,000 | $0 | 79,076 (Direct) | View |
2022-02-17 Exercise | 2022-02-22 10:21 am | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 1,000 | $70.56 | 79,076 (Direct) | View |
2022-02-15 Exercise | 2022-02-16 2:10 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 4,446 | $97.78 | 109,741 (Direct) | View |
2022-02-15 Exercise | 2022-02-16 2:10 pm | 2016-04-01 2023-04-01 | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 5,192 | $0 | 109,741 (Direct) | View |
2022-02-15 Exercise | 2022-02-16 2:10 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 746 | $70.56 | 109,741 (Direct) | View |
2021-12-16 Acquisition | 2022-02-15 1:58 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Schmieder John Bradley Director | 19,360 | $0 | 19,360 (Indirect) | View |
2022-01-03 Exercise | 2022-01-04 11:12 am | N/A N/A | MESA LABORATORIES INC | MLAB | Schmieder John Bradley Director | 1,000 | $97.78 | 73,036 (Direct) | View |
2022-01-03 Exercise | 2022-01-04 11:12 am | 2017-04-01 2022-04-01 | MESA LABORATORIES INC | MLAB | Schmieder John Bradley Director | 1,000 | $0 | 73,036 (Direct) | View |
2021-12-14 Exercise | 2021-12-15 10:53 am | 2019-04-02 2024-04-02 | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 1,659 | $0 | 23,445 (Direct) | View |
2021-12-14 Exercise | 2021-12-15 10:53 am | N/A N/A | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 917 | $226.72 | 23,445 (Direct) | View |
2021-12-14 Exercise | 2021-12-15 10:53 am | N/A N/A | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 532 | $203.54 | 23,445 (Direct) | View |
2021-12-14 Exercise | 2021-12-15 10:53 am | N/A N/A | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 210 | $142.4 | 23,445 (Direct) | View |
2021-12-10 Exercise | 2021-12-10 7:14 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,600 | $97.78 | 65,656 (Direct) | View |
2021-12-10 Exercise | 2021-12-10 7:14 pm | 2015-04-01 2022-04-01 | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,758 | $0 | 65,656 (Direct) | View |
2021-12-10 Exercise | 2021-12-10 7:14 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 158 | $89.7 | 65,656 (Direct) | View |
2021-12-02 Exercise | 2021-12-06 12:07 pm | N/A N/A | MESA LABORATORIES INC | MLAB | GUILLEMIN EVAN Director | 1,000 | $97.78 | 40,188 (Direct) | View |
2021-12-02 Exercise | 2021-12-06 12:07 pm | N/A N/A | MESA LABORATORIES INC | MLAB | GUILLEMIN EVAN Director | 120 | $58.51 | 40,188 (Direct) | View |
2021-12-02 Exercise | 2021-12-06 12:07 pm | 2015-04-01 2022-04-01 | MESA LABORATORIES INC | MLAB | GUILLEMIN EVAN Director | 2,320 | $0 | 40,188 (Direct) | View |
2021-12-02 Exercise | 2021-12-06 12:07 pm | N/A N/A | MESA LABORATORIES INC | MLAB | GUILLEMIN EVAN Director | 1,200 | $89.7 | 40,188 (Direct) | View |
2021-11-15 Option Award | 2021-11-19 12:48 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Ladiwala Shiraz Shabanali Director | 405 | $0 | 0 (Direct) | View |
2021-11-17 Exercise | 2021-11-18 1:02 pm | 2016-04-01 2023-04-01 | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 1,000 | $0 | 84,268 (Direct) | View |
2021-11-17 Exercise | 2021-11-18 1:02 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 1,000 | $70.56 | 84,268 (Direct) | View |
2021-11-15 Exercise | 2021-11-16 11:47 am | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 4,754 | $97.78 | 121,433 (Direct) | View |
2021-11-15 Exercise | 2021-11-16 11:47 am | 2015-04-01 2022-04-01 | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 5,192 | $0 | 121,433 (Direct) | View |
2021-11-15 Exercise | 2021-11-16 11:47 am | N/A N/A | MESA LABORATORIES INC | MLAB | Sullivan John James Director | 438 | $89.7 | 121,433 (Direct) | View |
2021-11-11 Exercise | 2021-11-12 11:20 am | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,000 | $97.78 | 37,543 (Direct) | View |
2021-11-11 Exercise | 2021-11-12 11:20 am | 2017-04-01 2022-04-01 | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,000 | $0 | 37,543 (Direct) | View |
2021-11-08 Exercise | 2021-11-09 10:44 am | N/A N/A | MESA LABORATORIES INC | MLAB | KELLY DAVID M Director | 18 | $58.51 | 3,169 (Direct) | View |
2021-11-08 Exercise | 2021-11-09 10:44 am | 2015-10-02 2022-10-02 | MESA LABORATORIES INC | MLAB | KELLY DAVID M Director | 18 | $0 | 3,169 (Direct) | View |
2021-10-28 Ownership | 2021-11-08 12:34 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Ladiwala Shiraz Shabanali Director | 0 | $0 | 0 (Direct) | View |
2021-10-20 Exercise | 2021-10-25 09:54 am | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 2,000 | $97.78 | 38,543 (Direct) | View |
2021-10-20 Exercise | 2021-10-25 09:54 am | 2017-04-01 2022-04-01 | MESA LABORATORIES INC | MLAB | Sakys John CFO | 2,000 | $0 | 38,543 (Direct) | View |
2021-09-10 Exercise | 2021-09-10 7:23 pm | 2015-04-01 2022-04-01 | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,400 | $0 | 40,543 (Direct) | View |
2021-09-10 Exercise | 2021-09-10 7:23 pm | N/A N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 1,400 | $89.7 | 40,543 (Direct) | View |
2021-09-01 Option Award | 2021-09-01 7:53 pm | 2022-09-01 N/A | MESA LABORATORIES INC | MLAB | DINOIA GREGORY VP | 5,007 | $0 | 8,478 (Direct) | View |
2021-09-01 Option Award | 2021-09-01 7:27 pm | 2022-09-01 N/A | MESA LABORATORIES INC | MLAB | Sakys John CFO | 7,773 | $0 | 37,269 (Direct) | View |
2021-09-01 Option Award | 2021-09-01 7:15 pm | 2022-09-01 N/A | MESA LABORATORIES INC | MLAB | Archbold Brian David VP | 5,033 | $0 | 10,246 (Direct) | View |
2021-09-01 Option Award | 2021-09-01 6:47 pm | 2022-09-01 N/A | MESA LABORATORIES INC | MLAB | Owens Gary M CEO | 24,728 | $0 | 76,462 (Direct) | View |
2021-09-01 Option Award | 2021-09-01 6:00 pm | N/A N/A | MESA LABORATORIES INC | MLAB | KELLY DAVID M Director | 431 | $0 | 431 (Direct) | View |