Jonathan Jay Mazelsky

President and CEO

Jonathan Jay Mazelsky (President and CEO) filed 2 Form 4 reports in the trailing twelve months (1 purchase, 1 sale, 1 filed past the two-business-day deadline), most often in IDEXX Laboratories, Inc. (IDXX). The largest single filing was $15.3M of IDXX (23,326 sh across 13 lots, as filed), executed Feb 26.

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Return, ttmiAverage return per filing, trailing twelve months

–

purchases not yet measured

Delay-adjustediThe same average, entered at disclosure dates

–

returns measure stock purchases only

Filings, ttm

1 buys · 1 sells · 1 late

Median delay

–

execution → disclosure

Volume, ttmiDollar value disclosed in the trailing twelve months

$15.4M

shares × price, as filed

Last traded

Jun 12

Filed Jun 18

Median ADV $321.9M across their filed names

Open performance→

Volume by month

Buys $101K Sells $33.8M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Healthcare 2 filings

Sector per market data · by filing · past 12 months

Most traded names

IDXX

IDEXX Laboratories, Inc. IDXX · 0 buys · 2 sells 2 filings XRAY

DENTSPLY SIRONA Inc. XRAY · 1 buy · 0 sells 1 filing

Recent filings

XRAYPURCHASE DENTSPLY SIRONA Inc. View filing → $101K
10,000 sh × $10.14
Exec Jun 12
Filed Jun 18 · 6:23 PM ET † IDXXSALE IDEXX Laboratories, Inc. View filing → $15.3M
23,326 sh across 13 lots
Exec Feb 26
Filed Mar 2 · 5:30 PM ET IDXXSALE IDEXX Laboratories, Inc. View filing → $18.5M
29,260 sh across 10 lots
Exec Aug 6 2025
Filed Aug 8 2025 · 5:30 PM ET