MESA LABORATORIES INC /CO/ — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Sullivan John James | — | Gift | 2,000 | — | — | 25,282 | Dec 2, 2025 |
| Owens Gary M | President and CEO | Option Exercise | 11,558 | — | — | 64,135 | Oct 27, 2025 |
| Ladiwala Shiraz Shabanali | — | Option Exercise | 1,949 | — | — | 5,023 | Aug 15, 2025 |
| Sullivan John James | — | Option Exercise | 1,404 | — | — | 27,282 | Aug 15, 2025 |
| Hall Shannon | — | Option Exercise | 1,404 | — | — | 4,189 | Aug 15, 2025 |
| Tripeny R Tony | — | Option Exercise | 1,404 | — | — | 4,083 | Aug 15, 2025 |
| Capone Mark Christopher | — | Option Exercise | 1,404 | — | — | 2,128 | Aug 15, 2025 |
| Alltoft Jennifer Sadie | — | Option Exercise | 1,404 | — | — | 4,878 | Aug 15, 2025 |
| Sakys John | CFO | Option Exercise | 1,036 | $95.82 | $99,270 | 15,498 | Jun 21, 2025 |
| Archbold Brian David | SVP Operations | Option Exercise | 844 | $95.82 | $80,872 | 2,792 | Jun 21, 2025 |
| Owens Gary M | President and CEO | Option Exercise | 3,301 | $95.82 | $316,302 | 54,022 | Jun 21, 2025 |
| Owens Gary M | President and CEO | Tax Withholding | 3,810 | $92.99 | $354,292 | 50,721 | Jun 18, 2025 |
| Archbold Brian David | SVP Operations | Tax Withholding | 1,166 | $92.99 | $108,426 | 1,948 | Jun 18, 2025 |
| Sakys John | CFO | Option Exercise | 2,840 | $92.99 | $264,092 | 15,705 | Jun 18, 2025 |
| Archbold Brian David | SVP Operations | Option Exercise | 495 | — | — | 1,030 | Jun 16, 2025 |
| Owens Gary M | President and CEO | Option Exercise | 2,102 | — | — | 47,763 | Jun 15, 2025 |
| Owens Gary M | President and CEO | Sale | 21,000 | $123.91 | $2,602,110 | 43,337 | Mar 19, 2025 |
| Sullivan John James | — | Gift | 2,000 | — | — | 25,878 | Nov 19, 2024 |
| Owens Gary M | President and CEO | Sale | 2,518 | $113.62 | $286,095 | 45,888 | Oct 29, 2024 |
| Archbold Brian David | SVP Operations | Sale | 1,499 | $125.00 | $187,375 | — | Sep 13, 2024 |
| Sakys John | CFO | Tax Withholding | 454 | $133.69 | $60,695 | 12,046 | Sep 1, 2024 |
| Owens Gary M | President and CEO | Option Exercise | 3,301 | — | — | 38,292 | Sep 1, 2024 |
| Archbold Brian David | SVP Operations | Tax Withholding | 386 | $133.69 | $51,604 | 1,499 | Sep 1, 2024 |
| Sullivan John James | — | Option Exercise | 1,074 | — | — | 27,878 | Sep 1, 2024 |
| Tripeny R Tony | — | Option Exercise | 1,074 | — | — | 2,679 | Sep 1, 2024 |
| Ladiwala Shiraz Shabanali | — | Option Exercise | 1,574 | — | — | 3,074 | Sep 1, 2024 |
| Hall Shannon | — | Option Exercise | 1,074 | — | — | 2,785 | Sep 1, 2024 |
| Alltoft Jennifer Sadie | — | Option Exercise | 1,074 | — | — | 3,474 | Sep 1, 2024 |
| Capone Mark Christopher | — | Option Exercise | 724 | — | — | 724 | Aug 15, 2024 |
| Owens Gary M | President and CEO | Option Exercise | 4,959 | — | — | 34,991 | Jun 14, 2024 |
| Archbold Brian David | SVP Operations | Option Exercise | 889 | — | — | 1,447 | Jun 14, 2024 |
| Sakys John | CFO | Tax Withholding | 572 | $91.60 | $52,395 | 11,463 | Jun 14, 2024 |
| Archbold Brian David | SVP Operations | Sale | 1,500 | $112.36 | $168,540 | 558 | Dec 15, 2023 |
| Sullivan John James | — | Gift | 2,000 | — | — | 26,804 | Nov 9, 2023 |
| Schmieder John Bradley | — | Sale | 1,000 | $123.74 | $123,740 | 62,760 | Sep 14, 2023 |
| Schmieder John Bradley | — | Sale | 3,000 | $123.32 | $369,960 | 66,760 | Sep 13, 2023 |
| Owens Gary M | President and CEO | Sale | 2,000 | $142.82 | $285,640 | 30,032 | Sep 1, 2023 |
| Tripeny R Tony | — | Option Exercise | 1,105 | — | — | 1,605 | Aug 15, 2023 |
| Ladiwala Shiraz Shabanali | — | Option Exercise | 1,055 | — | — | 1,460 | Aug 15, 2023 |
| Sullivan John James | — | Option Exercise | 754 | — | — | 29,004 | Aug 15, 2023 |
| Alltoft Jennifer Sadie | — | Option Exercise | 754 | — | — | 2,400 | Aug 15, 2023 |
| Ladiwala Shiraz Shabanali | — | Option Exercise | 40 | — | — | 1,500 | Aug 15, 2023 |
| Schmieder John Bradley | — | Option Exercise | 754 | — | — | 69,760 | Aug 15, 2023 |
| Hall Shannon | — | Option Exercise | 754 | — | — | 1,711 | Aug 15, 2023 |
| Sullivan John James | — | Tax Withholding | 6 | $135.55 | $813 | 28,250 | Jun 16, 2023 |
| Owens Gary M | President and CEO | Option Exercise | 2,820 | — | — | 30,992 | Jun 16, 2023 |
| Archbold Brian David | SVP Operations | Option Exercise | 612 | — | — | 2,247 | Jun 16, 2023 |
| Sakys John | CFO | Tax Withholding | 288 | $135.55 | $39,038 | 10,731 | Jun 16, 2023 |
| Sullivan John James | — | Tax Withholding | 6 | $134.45 | $807 | 28,241 | Jun 15, 2023 |
| Schmieder John Bradley | — | Option Exercise | 30 | — | — | 69,006 | Jun 15, 2023 |