NASDAQ:MLAB | Insider Transactions | MESA LABORATORIES INC /CO/

MLAB Insider Transactions

277 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–100; provenance stays internal.

MLAB insiders transaction timeline

PurchaseSale
2006-08-15: 1 purchase — Sullivan John James2006-09-22: 1 purchase — Sullivan John James2006-11-06: 1 purchase — Dwyer Robert V2007-03-05: 1 sale — DUKE PAUL D2007-04-04: 1 sale — DUKE PAUL D2007-05-03: 1 sale — DUKE PAUL D2007-06-05: 1 sale — DUKE PAUL D2007-07-03: 1 sale — DUKE PAUL D2007-08-02: 1 sale — DUKE PAUL D2007-09-06: 1 sale — DUKE PAUL D2007-10-02: 1 sale — DUKE PAUL D2007-11-01: 1 sale — DUKE PAUL D2007-12-03: 1 sale — DUKE PAUL D2008-05-14: 1 sale — SCHMIEDER LUKE R2008-12-31: 1 sale — PETERSON STEVEN W2009-11-23: 1 sale — Sullivan John James2009-12-30: 2 purchases — SEG Ventures, LLC, GUILLEMIN EVAN2009-12-30: 2 sales — BROOKS MICHAEL T, PETERSON STEVEN W2010-10-12: 2 purchases — SEG Ventures, LLC, GUILLEMIN EVAN2010-10-12: 1 sale — Dwyer Robert V2010-12-21: 2 purchases — SEG Ventures, LLC, GUILLEMIN EVAN2010-12-21: 1 sale — Dwyer Robert V2010-12-31: 1 purchase — KELLY DAVID M2011-03-03: 2 purchases — SEG Ventures, LLC, GUILLEMIN EVAN2011-03-03: 1 sale — PETERSON STEVEN W2011-06-09: 1 purchase — KELLY DAVID M2011-06-13: 1 purchase — KELLY DAVID M2011-08-29: 1 purchase — Adriance Glenn E2012-03-13: 1 sale — Sullivan John James2012-12-06: 1 sale — BROOKS MICHAEL T2012-12-18: 1 sale — PETERSON STEVEN W2012-12-19: 1 sale — PETERSON STEVEN W2012-12-21: 1 sale — PETERSON STEVEN W2012-12-26: 1 sale — PETERSON STEVEN W2012-12-27: 1 sale — PETERSON STEVEN W2012-12-28: 1 sale — PETERSON STEVEN W2013-03-05: 1 sale — CAMPBELL H STUART2013-08-14: 1 sale — Sullivan John James2013-08-19: 1 sale — Sullivan John James2013-11-12: 1 sale — Dwyer Robert V2013-11-13: 1 sale — Dwyer Robert V2013-11-14: 1 sale — Dwyer Robert V2013-11-15: 1 sale — Dwyer Robert V2013-12-05: 1 sale — Adriance Glenn E2013-12-09: 2 sales — Adriance Glenn E2014-02-25: 1 sale — Sullivan John James2014-02-26: 1 sale — Adriance Glenn E2014-02-27: 1 sale — Adriance Glenn E2014-03-14: 1 sale — SCHMIEDER LUKE R2015-08-07: 1 sale — Dwyer Robert V2015-08-10: 1 sale — Schmieder John Bradley2015-08-11: 1 sale — Schmieder John Bradley2015-08-17: 1 sale — Dwyer Robert V2015-09-08: 1 sale — Dwyer Robert V2015-09-11: 1 sale — Dwyer Robert V2015-09-15: 1 sale — Dwyer Robert V2015-09-17: 1 sale — Dwyer Robert V2015-09-22: 1 purchase — CAMPBELL H STUART2015-11-06: 1 sale — Sullivan John James2016-02-22: 1 sale — CAMPBELL H STUART2016-02-23: 1 sale — CAMPBELL H STUART2016-02-24: 1 sale — CAMPBELL H STUART2016-02-29: 1 sale — CAMPBELL H STUART2016-03-07: 1 sale — CAMPBELL H STUART2016-03-10: 1 sale — CAMPBELL H STUART2016-03-11: 1 sale — CAMPBELL H STUART2016-06-06: 1 sale — Adriance Glenn E2016-06-22: 1 sale — Sullivan John James2016-09-16: 1 sale — CAMPBELL H STUART2016-10-21: 1 sale — CAMPBELL H STUART2016-11-15: 1 sale — Sakys John2016-11-17: 1 sale — Sakys John2016-11-23: 1 sale — Adriance Glenn E2016-12-14: 1 sale — Dwyer Robert V2016-12-15: 1 sale — Dwyer Robert V2017-02-06: 1 sale — Adriance Glenn E2017-02-07: 4 sales — CAMPBELL H STUART, Schmieder John Bradley, Adriance Glenn E2017-02-13: 2 sales — Sullivan John James2017-02-17: 1 sale — Sullivan John James2017-02-21: 2 sales — Dwyer Robert V, Sullivan John James2017-02-22: 1 sale — Dwyer Robert V2017-03-20: 1 sale — BROOKS MICHAEL T2017-06-09: 1 sale — Adriance Glenn E2017-06-12: 1 sale — KELLY DAVID M2017-06-14: 1 sale — Dwyer Robert V2017-06-16: 1 sale — Dwyer Robert V2017-08-02: 1 sale — CAMPBELL H STUART2017-08-03: 1 sale — CAMPBELL H STUART2017-08-04: 1 sale — CAMPBELL H STUART2017-08-09: 1 sale — CAMPBELL H STUART2017-08-10: 1 sale — CAMPBELL H STUART2017-08-11: 1 sale — CAMPBELL H STUART2017-08-15: 1 sale — CAMPBELL H STUART2017-08-17: 1 sale — CAMPBELL H STUART2017-08-18: 1 sale — CAMPBELL H STUART2017-08-21: 1 sale — CAMPBELL H STUART2018-02-08: 1 sale — Schmieder John Bradley2018-02-15: 1 sale — Sullivan John James2018-02-16: 1 sale — Sullivan John James2018-03-14: 1 sale — Dwyer Robert V2018-06-11: 1 sale — CAMPBELL H STUART2018-06-15: 1 sale — Sullivan John James2018-06-20: 1 sale — Dwyer Robert V2018-08-15: 1 sale — Sakys John2018-09-10: 1 sale — BROOKS MICHAEL T2018-09-13: 1 sale — KELLY DAVID M2018-12-04: 1 sale — GUILLEMIN EVAN2018-12-06: 2 sales — GUILLEMIN EVAN, KELLY DAVID M2018-12-07: 1 sale — GUILLEMIN EVAN2018-12-10: 1 sale — GUILLEMIN EVAN2019-02-06: 1 sale — KELLY DAVID M2019-02-08: 2 sales — Dwyer Robert V, Schmieder John Bradley2019-02-11: 2 sales — GUILLEMIN EVAN, Dwyer Robert V2019-02-12: 1 sale — GUILLEMIN EVAN2019-02-13: 1 sale — GUILLEMIN EVAN2019-02-15: 1 sale — Dwyer Robert V2019-02-19: 1 sale — Dwyer Robert V2019-02-20: 1 sale — GUILLEMIN EVAN2019-03-19: 1 sale — KELLY DAVID M2019-03-31: 1 purchase — Dwyer Robert V2019-11-25: 1 sale — Schmieder John Bradley2019-12-16: 1 sale — GUILLEMIN EVAN2020-02-12: 1 sale — Dwyer Robert V2020-02-13: 1 sale — Dwyer Robert V2020-02-19: 1 sale — Schmieder John Bradley2020-02-21: 1 sale — Archbold Brian David2020-02-25: 1 sale — Sullivan John James2020-02-26: 1 sale — Sullivan John James2020-02-27: 1 sale — Sullivan John James2020-08-10: 6 sales — Archbold Brian David, KELLY DAVID M2020-08-12: 1 sale — Schmieder John Bradley2020-08-14: 1 sale — Sakys John2020-08-17: 2 sales — KELLY DAVID M, DINOIA GREGORY2020-08-28: 1 sale — KELLY DAVID M2020-08-31: 1 sale — KELLY DAVID M2020-09-01: 1 sale — Sakys John2020-09-02: 1 sale — Sakys John2020-09-04: 1 sale — DINOIA GREGORY2020-09-16: 1 sale — Owens Gary M2020-10-02: 2 sales — DINOIA GREGORY2020-10-06: 1 sale — Owens Gary M2020-10-07: 1 sale — Owens Gary M2020-10-08: 2 sales — Sakys John, Owens Gary M2020-11-09: 1 sale — Archbold Brian David2020-11-11: 1 sale — Sullivan John James2020-11-12: 1 sale — GUILLEMIN EVAN2020-11-13: 1 sale — GUILLEMIN EVAN2020-11-16: 1 sale — KELLY DAVID M2020-11-17: 1 sale — Sakys John2020-12-01: 1 sale — Sullivan John James2020-12-11: 1 sale — KELLY DAVID M2021-01-04: 1 sale — Sullivan John James2021-01-06: 1 sale — Sakys John2021-01-12: 1 sale — Schmieder John Bradley2021-02-01: 1 sale — Sullivan John James2021-02-10: 1 sale — Schmieder John Bradley2021-02-16: 1 sale — GUILLEMIN EVAN2021-02-23: 1 sale — DINOIA GREGORY2021-03-01: 1 sale — Sullivan John James2021-03-10: 1 sale — Archbold Brian David2021-03-12: 1 sale — Sakys John2021-03-16: 1 sale — GUILLEMIN EVAN2021-04-05: 2 sales — Sullivan John James2021-04-16: 1 sale — GUILLEMIN EVAN2021-05-04: 1 sale — Sullivan John James2021-05-05: 1 sale — Sullivan John James2021-05-06: 1 sale — Sullivan John James2021-05-17: 1 sale — GUILLEMIN EVAN2021-06-01: 1 sale — Sullivan John James2021-06-04: 2 sales — KELLY DAVID M, DINOIA GREGORY2021-06-07: 1 sale — Owens Gary M2021-06-08: 1 sale — Sullivan John James2021-06-16: 7 sales — Schmieder John Bradley, Sakys John, Owens Gary M and 3 more2021-06-17: 1 sale — Archbold Brian David2021-07-01: 2 sales — Sakys John, Sullivan John James2021-07-12: 1 sale — Sakys John2021-07-16: 1 sale — GUILLEMIN EVAN2021-08-02: 1 sale — Sullivan John James2021-08-09: 1 sale — Archbold Brian David2021-08-11: 1 sale — Schmieder John Bradley2021-08-12: 1 sale — Sakys John2021-08-16: 1 sale — Sullivan John James2021-08-31: 1 sale — KELLY DAVID M2021-09-01: 1 sale — Sullivan John James2021-09-10: 1 sale — Sakys John2021-10-01: 1 sale — Sullivan John James2021-10-20: 1 sale — Sakys John2021-11-08: 2 sales — KELLY DAVID M, DINOIA GREGORY2021-11-11: 1 sale — Sakys John2021-11-15: 1 sale — Sullivan John James2021-12-02: 1 sale — GUILLEMIN EVAN2021-12-10: 1 sale — Sakys John2021-12-14: 1 sale — Archbold Brian David2022-01-03: 1 sale — Schmieder John Bradley2022-02-15: 1 sale — Sullivan John James2022-03-23: 1 sale — Sakys John2022-03-24: 1 sale — Sakys John2022-04-20: 1 sale — Sakys John2022-06-07: 2 sales — Sullivan John James2022-06-21: 4 sales — Owens Gary M, Archbold Brian David, DINOIA GREGORY and 1 more2022-08-09: 1 purchase — Tripeny R Tony2022-08-15: 2 sales — Sakys John2022-08-16: 2 sales — Sakys John2022-08-18: 1 sale — GUILLEMIN EVAN2022-11-11: 1 sale — Schmieder John Bradley2022-12-08: 1 sale — Hall Shannon2023-01-13: 2 sales — Schmieder John Bradley2023-01-23: 1 sale — Sakys John2023-02-09: 1 sale — Sakys John2023-03-09: 1 sale — Sakys John2023-03-15: 1 sale — Sakys John2023-03-22: 1 sale — Sakys John2023-03-24: 2 sales — Sakys John2023-09-01: 1 sale — Owens Gary M2023-09-13: 1 sale — Schmieder John Bradley2023-09-14: 1 sale — Schmieder John Bradley2023-09-15: 1 sale — Schmieder John Bradley2023-12-15: 1 sale — Archbold Brian David2024-09-13: 1 sale — Archbold Brian David2024-10-28: 1 sale — Owens Gary M2024-10-29: 1 sale — Owens Gary M2025-03-19: 1 sale — Owens Gary M2025-06-16: 3 sales — Owens Gary M, Archbold Brian David, Sakys John2026-03-10: 3 purchases — Ladiwala Shiraz Shabanali, Capone Mark Christopher, Tripeny R Tony2026-06-16: 3 sales — Archbold Brian David, Crennen Lyndsey Elizabeth, Sakys John2026-06-22: 3 sales — Crennen Lyndsey Elizabeth, Archbold Brian David, Sakys John2026-08-13: 2 purchases — Kadia Siddhartha, Tripeny R Tony2026-08-13: 1 sale — Sullivan John James2006-08-152026-08-13
Insider profileRoleDateTransactionSharesPrice
Sullivan John JamesDirector2026-08-13Sale7,093$112.8
Kadia SiddharthaPresident and CEO2026-08-13Purchase7,093$112.8
Tripeny R TonyDirector2026-08-13Purchase900$113.69
Crennen Lyndsey ElizabethCAO2026-06-22Sale442.0$89.5
Archbold Brian DavidSVP Operations2026-06-22Sale2,516.0$89.5
Sakys JohnCFO2026-06-22Sale2,827.0$89.5
Archbold Brian DavidSVP Operations2026-06-16Sale1,151.0$101.27
Crennen Lyndsey ElizabethCAO2026-06-16Sale118.0$101.27
Sakys JohnCFO2026-06-16Sale1,223.0$101.27
Ladiwala Shiraz ShabanaliDirector2026-03-10Purchase3,500.0$72.23
Capone Mark ChristopherDirector2026-03-10Purchase1,301.0$76.35
Tripeny R TonyDirector2026-03-10Purchase1,315.0$76.0
Owens Gary MPresident and CEO2025-06-16Sale1,939.0$97.12
Archbold Brian DavidSVP Operations2025-06-16Sale472.0$97.12
Sakys JohnCFO2025-06-16Sale642.0$97.12
Owens Gary MPresident and CEO2025-03-19Sale21,000.0$123.91
Owens Gary MPresident and CEO2024-10-29Sale2,551.0$111.98
Owens Gary MPresident and CEO2024-10-28Sale2,518.0$113.62
Archbold Brian DavidSVP Operations2024-09-13Sale1,499.0$125.0
Archbold Brian DavidSVP Operations2023-12-15Sale1,500.0$112.36
Schmieder John BradleyDirector2023-09-15Sale1,000.0$123.74
Schmieder John BradleyDirector2023-09-14Sale3,000.0$123.05
Schmieder John BradleyDirector2023-09-13Sale3,000.0$123.32
Owens Gary MPresident and CEO2023-09-01Sale2,000.0$142.82
Sakys JohnCFO2023-03-24Sale1,128.0$167.01
Sakys JohnCFO2023-03-24Sale1,000.0$167.01
Sakys JohnCFO2023-03-22Sale2,500.0$171.62
Sakys JohnCFO2023-03-15Sale1,000.0$165.71
Sakys JohnCFO2023-03-09Sale400.0$169.97
Sakys JohnCFO2023-02-09Sale1,000.0$184.27
Sakys JohnCFO2023-01-23Sale2,100.0$210.19
Schmieder John BradleyDirector2023-01-13Sale1,571.0$191.31
Schmieder John BradleyDirector2023-01-13Sale1,571.0$191.31
Hall ShannonDirector2022-12-08Sale230.0$174.98
Schmieder John BradleyDirector2022-11-11Sale2,500.0$175.45
GUILLEMIN EVANDirector2022-08-18Sale3,692.0$196.12
Sakys JohnCFO2022-08-16Sale1,372.0$200.58
Sakys JohnCFO2022-08-16Sale1,372.0$200.58
Sakys JohnCFO2022-08-15Sale628.0$200.54
Sakys JohnCFO2022-08-15Sale628.0$200.54
Tripeny R TonyDirector2022-08-09Purchase500.0$200.0
Owens Gary MPresident and CEO2022-06-21Sale1,756.0$188.22
Archbold Brian DavidSVP Operations2022-06-21Sale392.0$188.22
DINOIA GREGORYSVP Commercial2022-06-21Sale555.0$188.22
Sakys JohnCFO2022-06-21Sale722.0$188.22
Sullivan John JamesDirector2022-06-07Sale5,192.0$207.76
Sullivan John JamesDirector2022-06-07Sale5,192.0$207.76
Sakys JohnCFO2022-04-20Sale72.0$250.44
Sakys JohnCFO2022-03-24Sale670.0$251.15
Sakys JohnCFO2022-03-23Sale930.0$251.29
Sullivan John JamesDirector2022-02-15Sale5,192.0$259.42
Schmieder John BradleyDirector2022-01-03Sale1,000.0$327.77
Archbold Brian DavidSVP Operations2021-12-14Sale1,659.0$325.02
Sakys JohnCFO2021-12-10Sale1,758.0$324.74
GUILLEMIN EVANDirector2021-12-02Sale2,320.0$310.61
Sullivan John JamesDirector2021-11-15Sale5,192.0$308.02
Sakys JohnCFO2021-11-11Sale1,000.0$317.12
KELLY DAVID MDirector2021-11-08Sale18.0$324.07
DINOIA GREGORYSVP Commercial2021-11-08Sale280.0$323.72
Sakys JohnCFO2021-10-20Sale2,000.0$309.86
Sullivan John JamesDirector2021-10-01Sale1,250.0$304.48
Sakys JohnCFO2021-09-10Sale1,400.0$270.21
Sullivan John JamesDirector2021-09-01Sale1,250.0$268.22
KELLY DAVID MDirector2021-08-31Sale603.0$267.29
Sullivan John JamesDirector2021-08-16Sale5,192.0$272.16
Sakys JohnCFO2021-08-12Sale1,000.0$275.16
Schmieder John BradleyDirector2021-08-11Sale800.0$278.06
Archbold Brian DavidSVP Continuous Improvement2021-08-09Sale639.0$280.03
Sullivan John JamesDirector2021-08-02Sale1,250.0$290.47
GUILLEMIN EVANDirector2021-07-16Sale720.0$282.18
Sakys JohnCFO2021-07-12Sale1,000.0$278.77
Sakys JohnCFO2021-07-01Sale1,000.0$267.04
Sullivan John JamesDirector2021-07-01Sale1,250.0$267.44
Archbold Brian DavidSVP Continuous Improvement2021-06-17Sale400.0$256.56
Schmieder John BradleyDirector2021-06-16Sale505.0$262.27
Sakys JohnCFO2021-06-16Sale2,119.0$255.67
Owens Gary MPresident and CEO2021-06-16Sale6,545.0$255.67
DINOIA GREGORYSVP Commericial2021-06-16Sale1,211.0$255.67
Archbold Brian DavidSVP Continuous Improvement2021-06-16Sale415.0$260.14
Archbold Brian DavidSVP Continuous Improvement2021-06-16Sale921.0$255.67
GUILLEMIN EVANDirector2021-06-16Sale720.0$256.36
Sullivan John JamesDirector2021-06-08Sale5,192.0$258.19
Owens Gary MPresident and CEO2021-06-07Sale1,350.0$264.0
KELLY DAVID MDirector2021-06-04Sale851.0$260.28
DINOIA GREGORYSVP Commercial2021-06-04Sale540.0$260.27
Sullivan John JamesDirector2021-06-01Sale2,215.0$251.46
GUILLEMIN EVANDirector2021-05-17Sale720.0$244.25
Sullivan John JamesDirector2021-05-06Sale200.0$250.05
Sullivan John JamesDirector2021-05-05Sale100.0$250.59
Sullivan John JamesDirector2021-05-04Sale735.0$250.14
GUILLEMIN EVANDirector2021-04-16Sale720.0$253.77
Sullivan John JamesDirector2021-04-05Sale500.0$250.76
Sullivan John JamesDirector2021-04-05Sale500.0$250.76
GUILLEMIN EVANDirector2021-03-16Sale720.0$269.48
Sakys JohnCFO2021-03-12Sale2,500.0$263.84
Archbold Brian DavidSVP Continuous Improvement2021-03-10Sale223.0$271.78
Sullivan John JamesDirector2021-03-01Sale1,250.0$273.94
DINOIA GREGORYSVP Commericial2021-02-23Sale280.0$276.75
GUILLEMIN EVANDirector2021-02-16Sale3,600.0$281.52
Schmieder John BradleyDirector2021-02-10Sale1,750.0$278.23