Jonathan Jay Mazelsky Idexx Laboratories Inc (IDXX) insider trading activity

Jonathan Jay Mazelsky is President and CEO of IDEXX LABORATORIES INC . Currently has a direct ownership of 83,494 shares of IDXX, which is worth approximately $54.5 Million. The most recent transaction as insider was on Aug 08, 2025, when has been sold 183 shares (Common Stock) at a price of $598.49 per share, resulting in proceeds of $109,523. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 83.5K

0.25% 3M change

2.16% 12M change

Total Value Held $54.5 Million

JONATHAN JAY MAZELSKY Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Aug 08 2025	BUY Exercise of conversion of derivative security	$109,523 $598.49 p/Share	183 Added 0.22%	83,494 Common Stock
Aug 06 2025	SELL Open market or private sale	$18,513,387 $632.72 p/Share	29,260 Reduced 25.99%	83,311 Common Stock
Aug 06 2025	BUY Exercise of conversion of derivative security	$1,985,290 $67.85 p/Share	29,260 Added 20.63%	112,571 Common Stock
Feb 14 2025	SELL Payment of exercise price or tax liability	$543,215 $444.53 p/Share	1,222 Reduced 1.45%	83,282 Common Stock
Feb 14 2025	BUY Exercise of conversion of derivative security	-	2,747 Added 3.15%	84,504 Common Stock
Aug 05 2024	SELL Payment of exercise price or tax liability	$77,363 $455.08 p/Share	170 Reduced 0.21%	81,732 Common Stock
Aug 05 2024	BUY Exercise of conversion of derivative security	-	384 Added 0.47%	81,902 Common Stock
Feb 29 2024	SELL Bona fide gift	-	550 Reduced 0.67%	81,496 Common Stock
Feb 21 2024	BUY Exercise of conversion of derivative security	$99,952 $206.94 p/Share	483 Added 0.59%	82,046 Common Stock
Feb 14 2024	SELL Payment of exercise price or tax liability	$1,030,869 $560.56 p/Share	1,839 Reduced 2.2%	81,563 Common Stock
Feb 14 2024	BUY Exercise of conversion of derivative security	-	4,156 Added 4.75%	83,402 Common Stock
Feb 07 2024	SELL Open market or private sale	$6,882,360 $573.53 p/Share	12,000 Reduced 13.15%	79,246 Common Stock
Feb 07 2024	BUY Exercise of conversion of derivative security	$814,199 $67.85 p/Share	12,000 Added 11.62%	91,246 Common Stock
Dec 04 2023	SELL Open market or private sale	$3,658,303 $513.23 p/Share	7,128 Reduced 8.25%	79,233 Common Stock
Dec 04 2023	BUY Exercise of conversion of derivative security	$1,067,744 $79.54 p/Share	13,424 Added 13.45%	86,361 Common Stock
Aug 31 2023	SELL Open market or private sale	$6,873,222 $512.01 p/Share	13,424 Reduced 15.55%	72,925 Common Stock
Aug 31 2023	BUY Exercise of conversion of derivative security	$1,067,744 $79.54 p/Share	13,424 Added 13.45%	86,349 Common Stock
Aug 05 2023	SELL Payment of exercise price or tax liability	$85,693 $504.08 p/Share	170 Reduced 0.23%	72,925 Common Stock
Aug 05 2023	BUY Exercise of conversion of derivative security	-	384 Added 0.52%	73,095 Common Stock
May 18 2023	SELL Bona fide gift	-	602 Reduced 0.82%	72,699 Common Stock
May 04 2023	BUY Exercise of conversion of derivative security	$99,825 $178.26 p/Share	560 Added 0.76%	73,301 Common Stock
Feb 14 2023	SELL Payment of exercise price or tax liability	$834,548 $503.65 p/Share	1,657 Reduced 2.23%	72,726 Common Stock
Feb 14 2023	BUY Exercise of conversion of derivative security	-	3,561 Added 4.57%	74,383 Common Stock
Nov 14 2022	SELL Open market or private sale	$4,563,825 $434.65 p/Share	10,500 Reduced 12.91%	70,804 Common Stock
Nov 14 2022	BUY Exercise of conversion of derivative security	$1,177,876 $62.0 p/Share	18,998 Added 18.94%	81,304 Common Stock

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