MESA LABORATORIES INC /CO/ (MLAB)

Latest Insider Confidence Score

2025Q4

48.9
Bearish

Company insider confidence (by quarter)

2010Q2 2025Q4

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Sullivan John James Director 72,062 Dec 5, 2025
Owens Gary M CEO 64,135 Oct 28, 2025
Schmieder John Bradley Director 62,760 Sep 19, 2023
Campbell H Stuart Director 41,677 Nov 28, 2018
Brooks Michael T Director 32,730 Jun 14, 2019

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Dec 2, 2025 Dec 5, 2025 Sullivan John James Director Neutral 27.5 -2,000 -2.78% -
Oct 27, 2025 Oct 28, 2025 Owens Gary M CEO Neutral 52.5 - 0.00% -
Aug 15, 2025 Aug 18, 2025 Ladiwala Shiraz Shabanali Director Neutral 52.5 - 0.00% -
Aug 15, 2025 Aug 18, 2025 Sullivan John James Director Neutral 52.5 - 0.00% -
Aug 15, 2025 Aug 18, 2025 Hall Shannon Director Neutral 52.5 - 0.00% -
Aug 15, 2025 Aug 18, 2025 Tripeny R Tony Director Neutral 52.5 - 0.00% -
Aug 15, 2025 Aug 18, 2025 Capone Mark Christopher Director Neutral 52.5 - 0.00% -
Aug 15, 2025 Aug 18, 2025 Alltoft Jennifer Sadie Director Neutral 52.5 - 0.00% -
Jun 21, 2025 Jun 25, 2025 Sakys John CFO Sell 26.3 -454 -2.91% $43.5K
Jun 21, 2025 Jun 25, 2025 Archbold Brian David SVP Operations Sell 26.3 -385 -13.79% $36.9K
Jun 21, 2025 Jun 24, 2025 Owens Gary M CEO Sell 22.5 -1,445 -2.67% $138.5K
Jun 18, 2025 Jun 20, 2025 Owens Gary M CEO Sell 20.0 -3,810 -6.99% $354.3K
Jun 18, 2025 Jun 20, 2025 Archbold Brian David SVP Operations Sell 22.5 -1,166 -37.44% $108.4K
Jun 18, 2025 Jun 20, 2025 Sakys John CFO Sell 22.5 -1,243 -7.91% $115.6K
Jun 15, 2025 Jun 18, 2025 Sakys John CFO Neutral 52.5 - 0.00% -
Jun 15, 2025 Jun 18, 2025 Archbold Brian David SVP Operations Neutral 52.5 - 0.00% -
Jun 15, 2025 Jun 18, 2025 Owens Gary M CEO Neutral 52.5 - 0.00% -
Jun 15, 2025 Jun 18, 2025 Owens Gary M CEO Sell 22.5 -1,939 -4.06% $188.3K
Jun 15, 2025 Jun 18, 2025 Archbold Brian David SVP Operations Sell 26.3 -472 -45.83% $45.8K
Jun 15, 2025 Jun 18, 2025 Sakys John CFO Sell 65.0 +26 0.20% $62.3K
Jun 10, 2025 Jun 11, 2025 Sakys John CFO Neutral 52.5 - 0.00% -
Jun 10, 2025 Jun 11, 2025 Archbold Brian David SVP Operations Neutral 52.5 - 0.00% -
Jun 10, 2025 Jun 11, 2025 Owens Gary M CEO Neutral 52.5 - 0.00% -
Mar 19, 2025 Mar 24, 2025 Owens Gary M CEO Sell 5.0 -21,000 -32.64% $2.6M
Nov 19, 2024 Nov 25, 2024 Sullivan John James Director Neutral 27.5 -2,000 -2.75% -
Oct 27, 2024 Oct 29, 2024 Owens Gary M CEO Sell 97.5 +6,490 17.61% $571.7K
Sep 13, 2024 Sep 16, 2024 Archbold Brian David SVP Operations Sell 10.0 -1,499 -100.00% $187.4K
Sep 1, 2024 Sep 6, 2024 Sakys John CFO Sell 22.5 -454 -3.60% $60.7K
Sep 1, 2024 Sep 6, 2024 Owens Gary M CEO Sell 22.5 -1,445 -3.77% $193.2K
Sep 1, 2024 Sep 6, 2024 Archbold Brian David SVP Operations Sell 22.5 -386 -20.48% $51.6K
Sep 1, 2024 Sep 6, 2024 Sullivan John James Director Neutral 52.5 - 0.00% -
Sep 1, 2024 Sep 6, 2024 Tripeny R Tony Director Neutral 52.5 - 0.00% -
Sep 1, 2024 Sep 6, 2024 Ladiwala Shiraz Shabanali Director Neutral 52.5 - 0.00% -
Sep 1, 2024 Sep 6, 2024 Hall Shannon Director Neutral 52.5 - 0.00% -
Sep 1, 2024 Sep 6, 2024 Alltoft Jennifer Sadie Director Neutral 52.5 - 0.00% -
Aug 15, 2024 Aug 19, 2024 Ladiwala Shiraz Shabanali Director Neutral 52.5 - 0.00% -
Aug 15, 2024 Aug 19, 2024 Hall Shannon Director Neutral 52.5 - 0.00% -
Aug 15, 2024 Aug 19, 2024 Tripeny R Tony Director Neutral 52.5 - 0.00% -
Aug 15, 2024 Aug 19, 2024 Sullivan John James Director Neutral 52.5 - 0.00% -
Aug 15, 2024 Aug 19, 2024 Alltoft Jennifer Sadie Director Neutral 52.5 - 0.00% -
Aug 15, 2024 Aug 19, 2024 Capone Mark Christopher Director Neutral 52.5 - 0.00% -
Jun 18, 2024 Jun 21, 2024 Archbold Brian David SVP operations Neutral 52.5 - 0.00% -
Jun 18, 2024 Jun 21, 2024 Owens Gary M CEO Neutral 52.5 - 0.00% -
Jun 18, 2024 Jun 21, 2024 Sakys John CFO Neutral 52.5 - 0.00% -
Jun 14, 2024 Jun 17, 2024 Owens Gary M CEO Neutral 52.5 - 0.00% -
Jun 14, 2024 Jun 17, 2024 Archbold Brian David SVP Operations Sell 26.3 -407 -28.13% $37.3K
Jun 14, 2024 Jun 17, 2024 Sakys John CFO Sell 22.5 -572 -4.71% $52.4K
Apr 2, 2024 Apr 3, 2024 Sullivan John James Director Neutral 52.5 - 0.00% -
Apr 2, 2024 Apr 3, 2024 Sakys John CFO Neutral 52.5 - 0.00% -
Apr 2, 2024 Apr 3, 2024 Owens Gary M CEO Neutral 52.5 - 0.00% -
Apr 2, 2024 Apr 3, 2024 Archbold Brian David SVP Operations Neutral 52.5 - 0.00% -
Jan 8, 2024 Mar 26, 2024 Archbold Brian David SVP Operations Neutral 52.5 - 0.00% -
Feb 15, 2024 Feb 16, 2024 Capone Mark Christopher Director Neutral 52.5 - 0.00% -
Feb 16, 2024 Capone Mark Christopher Director Neutral 52.5 - 0.00% -
Dec 15, 2023 Dec 19, 2023 Archbold Brian David SVP Operations Sell 10.0 -1,500 -72.89% $168.5K
Nov 9, 2023 Nov 14, 2023 Sullivan John James Director Neutral 27.5 -2,000 -2.72% -
Sep 14, 2023 Sep 19, 2023 Schmieder John Bradley Director Sell 30.0 -4,000 -5.99% $492.9K
Sep 13, 2023 Sep 14, 2023 Schmieder John Bradley Director Sell 35.0 -3,000 -4.30% $370K
Aug 15, 2023 Sep 6, 2023 Ladiwala Shiraz Shabanali Director Neutral 52.5 - 0.00% -
Sep 1, 2023 Sep 6, 2023 Hall Shannon Director Neutral 52.5 - 0.00% -
Sep 1, 2023 Sep 6, 2023 Alltoft Jennifer Sadie Director Neutral 52.5 - 0.00% -
Sep 1, 2023 Sep 6, 2023 Sullivan John James Director Neutral 52.5 - 0.00% -
Sep 1, 2023 Sep 6, 2023 Tripeny R Tony Director Neutral 52.5 - 0.00% -
Sep 1, 2023 Sep 5, 2023 Sakys John CFO Neutral 52.5 - 0.00% -
Sep 1, 2023 Sep 5, 2023 Archbold Brian David SVP Operations Neutral 52.5 - 0.00% -
Sep 1, 2023 Sep 5, 2023 Owens Gary M CEO Neutral 52.5 - 0.00% -
Sep 1, 2023 Sep 5, 2023 Owens Gary M CEO Sell 30.0 -2,000 -6.24% $285.6K
Aug 15, 2023 Aug 16, 2023 Tripeny R Tony Director Neutral 52.5 - 0.00% -
Aug 15, 2023 Aug 16, 2023 Ladiwala Shiraz Shabanali Director Neutral 52.5 - 0.00% -
Aug 15, 2023 Aug 16, 2023 Sullivan John James Director Neutral 52.5 - 0.00% -
Aug 15, 2023 Aug 16, 2023 Alltoft Jennifer Sadie Director Neutral 52.5 - 0.00% -
Aug 15, 2023 Aug 16, 2023 Schmieder John Bradley Director Neutral 52.5 - 0.00% -
Aug 15, 2023 Aug 16, 2023 Hall Shannon Director Neutral 52.5 - 0.00% -
Jun 21, 2023 Jun 26, 2023 Archbold Brian David SVP Operations Neutral 52.5 - 0.00% -
Jun 21, 2023 Jun 26, 2023 Owens Gary M CEO Neutral 52.5 - 0.00% -
Jun 21, 2023 Jun 26, 2023 Sakys John CFO Neutral 52.5 - 0.00% -
Jun 16, 2023 Jun 21, 2023 Sullivan John James Director Sell 52.5 -6 -0.01% $813.3
Jun 16, 2023 Jun 21, 2023 Owens Gary M CEO Sell 22.5 -945 -3.05% $128.1K
Jun 16, 2023 Jun 21, 2023 Archbold Brian David SVP Operations Sell 26.3 -189 -8.41% $25.6K
Jun 16, 2023 Jun 21, 2023 Sakys John CFO Sell 26.3 -288 -2.61% $39K
Jun 15, 2023 Jun 16, 2023 Sullivan John James Director Sell 52.5 -6 -0.02% $806.7
Jun 15, 2023 Jun 16, 2023 Schmieder John Bradley Director Neutral 52.5 - 0.00% -
Jun 15, 2023 Jun 16, 2023 Owens Gary M CEO Sell 22.5 -1,237 -4.21% $166.3K
Jun 15, 2023 Jun 16, 2023 Archbold Brian David SVP Operations Sell 26.3 -283 -14.75% $38K
Jun 15, 2023 Jun 16, 2023 Sakys John CFO Sell 22.5 -373 -3.50% $50.1K
Mar 22, 2023 Mar 27, 2023 Sakys John CFO Sell 22.5 -4,628 -13.69% $784.4K
Mar 15, 2023 Mar 16, 2023 Sakys John CFO Sell 28.8 -1,000 -9.26% $165.7K
Mar 9, 2023 Mar 9, 2023 Sakys John CFO Sell 37.5 -400 -3.92% $68K
Feb 9, 2023 Feb 9, 2023 Sakys John CFO Sell 28.8 -1,000 -9.26% $184.3K
Feb 2, 2023 Feb 6, 2023 Sullivan John James Director Neutral 52.5 - 0.00% -
Jan 23, 2023 Jan 25, 2023 Sakys John CFO Sell 17.5 -2,100 -17.65% $441.4K
Jan 13, 2023 Jan 17, 2023 Schmieder John Bradley Director Sell 38.8 -1,571 -2.23% $300.5K
Jan 13, 2023 Jan 17, 2023 Schmieder John Bradley Director Sell 20.0 -1,571 -2.23% $300.5K
Nov 15, 2022 Dec 14, 2022 Ladiwala Shiraz Shabanali Director Neutral 52.5 - 0.00% -
Dec 8, 2022 Dec 9, 2022 Hall Shannon Director Sell 26.3 -230 -19.38% $40.2K
Nov 28, 2022 Nov 29, 2022 Sullivan John James Director Neutral 27.5 -1,425 -1.92% -
Nov 11, 2022 Nov 21, 2022 Schmieder John Bradley Director Sell 20.0 -2,500 -3.50% $438.6K
Sep 1, 2022 Sep 2, 2022 Sakys John CFO Sell 22.5 -799 -7.54% $142.6K
Sep 1, 2022 Sep 2, 2022 Owens Gary M CEO Sell 22.5 -722 -2.64% $128.8K
Sep 1, 2022 Sep 2, 2022 Archbold Brian David VP Operations Sell 22.5 -412 -24.01% $73.5K