JONATHAN JAY MAZELSKY
CIK 1556270 · President and CEO · last filed 2026-06-05
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Loading insider history…
Disclosed Exposure
$59.16M
Companies
2
Total Filings
86
Lifetime Open-Market Net
-$79.60M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Recent Filings · Page 5 of 9
86 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-05-26 | XRAY | Grant (A) | +5,419 | $0 | EDGAR |
| 2023-05-19 | IDXX | Gift (G) | −602 | $0 | EDGAR |
| 2023-05-05 | IDXX | Exer (M) | +560 | $99.8K | EDGAR |
| 2023-02-16 | IDXX | Mixed | +1,904 | -$834.5K | EDGAR |
| 2023-02-10 | IDXX | Grant (A) | — | $0 | EDGAR |
| 2022-11-16 | IDXX | Mixed | +8,498 | -$3.38M | EDGAR |
| 2022-11-09 | IDXX | Mixed | +10,772 | -$3.81M | EDGAR |
| 2022-08-08 | IDXX | Mixed | +206 | -$73.0K | EDGAR |
| 2022-05-23 | IDXX | Exer (M) | +706 | $100.0K | EDGAR |
| 2022-03-07 | IDXX | Gift (G) | −500 | $0 | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.