Brian David Archbold Mesa Laboratories Inc (MLAB) insider trading activity

Brian David Archbold is SVP Operations of MESA LABORATORIES INC . Currently has a direct ownership of 2,407 shares of MLAB, which is worth approximately $199,444. The most recent transaction as insider was on Jun 21, 2025, when has been sold 385 shares (Common Stock) at a price of $95.82 per share, resulting in proceeds of $36,890. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 2.41K

Infinity% 3M change

131.44% 12M change

Total Value Held $199,444

Brian David Archbold Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jun 21 2025	SELL Payment of exercise price or tax liability	$36,890 $95.82 p/Share	385 Reduced 13.79%	2,407 Common Stock
Jun 21 2025	BUY Exercise of conversion of derivative security	$80,872 $95.82 p/Share	844 Added 23.21%	2,792 Common Stock
Jun 18 2025	SELL Payment of exercise price or tax liability	$108,426 $92.99 p/Share	1,166 Reduced 37.44%	1,948 Common Stock
Jun 18 2025	BUY Exercise of conversion of derivative security	$237,682 $92.99 p/Share	2,556 Added 45.08%	3,114 Common Stock
Jun 16 2025	SELL Open market or private sale	$45,840 $97.12 p/Share	472 Reduced 45.83%	558 Common Stock
Jun 15 2025	BUY Exercise of conversion of derivative security	-	1,030 Added 50.0%	1,030 Common Stock
Sep 13 2024	SELL Open market or private sale	$187,375 $125.0 p/Share	1,499 Reduced 100.0%	0 Common Stock
Sep 01 2024	SELL Payment of exercise price or tax liability	$51,604 $133.69 p/Share	386 Reduced 20.48%	1,499 Common Stock
Sep 01 2024	BUY Exercise of conversion of derivative security	-	845 Added 30.95%	1,885 Common Stock
Jun 14 2024	SELL Payment of exercise price or tax liability	$37,281 $91.6 p/Share	407 Reduced 28.13%	1,040 Common Stock
Jun 14 2024	BUY Exercise of conversion of derivative security	-	889 Added 38.06%	1,447 Common Stock
Dec 15 2023	SELL Open market or private sale	$168,540 $112.36 p/Share	1,500 Reduced 72.89%	558 Common Stock
Jun 16 2023	SELL Payment of exercise price or tax liability	$25,618 $135.55 p/Share	189 Reduced 8.41%	2,058 Common Stock
Jun 16 2023	BUY Exercise of conversion of derivative security	-	612 Added 21.41%	2,247 Common Stock
Jun 15 2023	SELL Payment of exercise price or tax liability	$38,049 $134.45 p/Share	283 Reduced 14.75%	1,635 Common Stock
Jun 15 2023	BUY Exercise of conversion of derivative security	-	614 Added 24.25%	1,918 Common Stock
Sep 01 2022	SELL Payment of exercise price or tax liability	$73,509 $178.42 p/Share	412 Reduced 24.01%	1,304 Common Stock
Sep 01 2022	BUY Exercise of conversion of derivative security	-	903 Added 34.48%	1,716 Common Stock
Jun 21 2022	SELL Open market or private sale	$73,782 $188.22 p/Share	392 Reduced 32.53%	813 Common Stock
Jun 21 2022	BUY Grant, award, or other acquisition	-	868 Added 41.87%	1,205 Common Stock
Jun 17 2022	SELL Payment of exercise price or tax liability	$28,763 $185.57 p/Share	155 Reduced 31.5%	337 Common Stock
Jun 17 2022	BUY Exercise of conversion of derivative security	-	338 Added 40.72%	492 Common Stock
Dec 14 2021	SELL Open market or private sale	$539,208 $325.02 p/Share	1,659 Reduced 91.51%	154 Common Stock
Dec 14 2021	BUY Exercise of conversion of derivative security	$316,687 $190.89 p/Share	1,659 Added 47.78%	1,813 Common Stock
Aug 09 2021	SELL Open market or private sale	$178,939 $280.03 p/Share	639 Reduced 80.58%	154 Common Stock

BDA

Brian David Archbold

SVP Operations

Lakewood, CO

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