JONATHAN JAY MAZELSKY
CIK 1556270 · President and CEO · last filed 2026-06-05
JONATHAN JAY MAZELSKY is a President and CEO who has filed 86 SEC Form 4 insider transactions across 2 companies since 2012. The most recent filing, for XRAY, was dated Jun 5, 2026. Across all open-market trades the lifetime net is −$79.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $59.2M across reported positions.
"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.
$59.16M
2
86
-$79.60M
Holdings By Company
Recent Filings
86 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-05 | XRAY | Grant (A) | +22,822 | $0 | EDGAR |
| 2026-04-02 | XRAY | Grant (A) | — | $0 | EDGAR |
| 2026-03-02 | IDXX | Mixed | +197 | -$11.94M | EDGAR |
| 2026-02-17 | IDXX | Mixed | +1,142 | -$575.9K | EDGAR |
| 2026-01-13 | XRAY | Grant (A) | +395 | $0 | EDGAR |
| 2026-01-02 | XRAY | Grant (A) | — | $0 | EDGAR |
| 2025-10-15 | XRAY | Grant (A) | +359 | $0 | EDGAR |
| 2025-10-01 | XRAY | Grant (A) | — | $0 | EDGAR |
| 2025-09-04 | IDXX | Gift (G) | −1,051 | $0 | EDGAR |
| 2025-08-12 | IDXX | Exer (M) | +183 | $109.5K | EDGAR |