John Sakys Mesa Laboratories Inc (MLAB) insider trading activity

John Sakys is CFO of MESA LABORATORIES INC . Currently has a direct ownership of 15,044 shares of MLAB, which is worth approximately $951,833. The most recent transaction as insider was on Jun 21, 2025, when has been sold 454 shares (Common Stock) at a price of $95.82 per share, resulting in proceeds of $43,502. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 15K

24.89% 3M change

31.24% 12M change

Total Value Held $951,833

John Sakys Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jun 21 2025	SELL Payment of exercise price or tax liability	$43,502 $95.82 p/Share	454 Reduced 2.93%	15,044 Common Stock
Jun 21 2025	BUY Exercise of conversion of derivative security	$99,269 $95.82 p/Share	1,036 Added 6.27%	15,498 Common Stock
Jun 18 2025	SELL Payment of exercise price or tax liability	$115,586 $92.99 p/Share	1,243 Reduced 7.91%	14,462 Common Stock
Jun 18 2025	BUY Exercise of conversion of derivative security	$264,091 $92.99 p/Share	2,840 Added 15.31%	15,705 Common Stock
Jun 16 2025	SELL Open market or private sale	$62,351 $97.12 p/Share	642 Reduced 4.75%	12,865 Common Stock
Jun 15 2025	BUY Exercise of conversion of derivative security	-	793 Added 5.82%	12,839 Common Stock
Sep 01 2024	SELL Payment of exercise price or tax liability	$60,695 $133.69 p/Share	454 Reduced 3.63%	12,046 Common Stock
Sep 01 2024	BUY Exercise of conversion of derivative security	-	1,037 Added 7.66%	12,500 Common Stock
Jun 14 2024	SELL Payment of exercise price or tax liability	$52,395 $91.6 p/Share	572 Reduced 4.75%	11,463 Common Stock
Jun 14 2024	BUY Exercise of conversion of derivative security	-	1,304 Added 9.78%	12,035 Common Stock
Jun 16 2023	BUY Exercise of conversion of derivative security	-	848 Added 7.15%	11,019 Common Stock
Jun 15 2023	SELL Payment of exercise price or tax liability	$39,038 $135.55 p/Share	288 Reduced 2.61%	10,731 Common Stock
Jun 15 2023	SELL Payment of exercise price or tax liability	$50,149 $134.45 p/Share	373 Reduced 3.54%	10,171 Common Stock
Jun 15 2023	BUY Exercise of conversion of derivative security	-	848 Added 7.44%	10,544 Common Stock
Mar 24 2023	SELL Open market or private sale	$355,397 $167.01 p/Share	2,128 Reduced 18.0%	9,696 Common Stock
Mar 24 2023	BUY Exercise of conversion of derivative security	$185,689 $87.26 p/Share	2,128 Added 16.43%	10,824 Common Stock
Mar 22 2023	SELL Open market or private sale	$429,050 $171.62 p/Share	2,500 Reduced 20.5%	9,696 Common Stock
Mar 22 2023	BUY Exercise of conversion of derivative security	$306,650 $122.66 p/Share	2,500 Added 17.01%	12,196 Common Stock
Mar 15 2023	SELL Open market or private sale	$165,710 $165.71 p/Share	1,000 Reduced 9.35%	9,696 Common Stock
Mar 15 2023	BUY Exercise of conversion of derivative security	$70,560 $70.56 p/Share	1,000 Added 8.55%	10,696 Common Stock
Mar 09 2023	SELL Open market or private sale	$67,988 $169.97 p/Share	400 Reduced 3.96%	9,696 Common Stock
Mar 09 2023	BUY Exercise of conversion of derivative security	$28,224 $70.56 p/Share	400 Added 3.81%	10,096 Common Stock
Feb 09 2023	SELL Open market or private sale	$184,270 $184.27 p/Share	1,000 Reduced 9.35%	9,696 Common Stock
Feb 09 2023	BUY Exercise of conversion of derivative security	$51,850 $51.85 p/Share	1,000 Added 8.55%	10,696 Common Stock
Jan 23 2023	SELL Open market or private sale	$441,399 $210.19 p/Share	2,100 Reduced 17.8%	9,696 Common Stock

John Sakys

CFO

Lakewood, CO

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