Transactions
25
Insider / IDEXX LABORATORIES INC /DE
MAZELSKY JONATHAN JAY
President and CEO at IDEXX LABORATORIES INC /DE
- Company
- IDEXX LABORATORIES INC /DE
- First filing on record
- February 17, 2026
- Latest trade on record
- September 30, 2026
- SEC filings
- EDGAR ↗
MAZELSKY JONATHAN JAY, President and CEO at IDEXX LABORATORIES INC /DE, has disclosed 25 transactions in PODD, IDXX since February 17, 2026: 0 purchases (0 open-market buys) and 14 sales, worth about $19.3M at the reported prices. The latest was filed October 2, 2026, 2 days after the trade; 1 filing was late against the 2-business-day Form 4 deadline.
Open-market buys
0
Sales
14
Avg. disclosure lag
3.6d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months MAZELSKY JONATHAN JAY made no purchases and 14 sales worth $16M, plus 11 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
MAZELSKY JONATHAN JAY has traded 1 stock on record; the largest by dollars is IDXX.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
1 of 4 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| S | Open-market sale | 13 | 23,326 | $15.3M |
| M | Option exercise or conversion | 8 | 51,160 | $3.4M |
| A | Grant or award | 3 | 14,903 | $18K |
| F | Shares withheld for tax | 1 | 915 | $576K |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 25 | 0 | 14 · $15.9M |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| PODD | Other A | September 30, 2026 | October 2, 2026 | 2d | 141 | $130 | $18K | Form 4 ↗ | ||
| PODD | Other A | July 1, 2026 | July 2, 2026 | 1d | 1,355 | — | — | Form 4 ↗ | ||
| IDXX | Option / conversion M | February 27, 2026 | March 2, 2026 | 3d | 197 | — | — | derivative | Form 4 ↗ | |
| IDXX | Option / conversion M | February 26, 2026 | March 2, 2026 | 4d | 23,326 | — | — | derivative | Form 4 ↗ | |
| IDXX | Option / conversion M | February 27, 2026 | March 2, 2026 | 3d | 197 | $506 | $100K | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 2,589 | $663 | $1.7M | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 1,000 | $662 | $662K | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 1,200 | $661 | $793K | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 2,859 | $660 | $1.9M | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 3,660 | $659 | $2.4M | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 2,860 | $658 | $1.9M | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 1,343 | $657 | $882K | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 1,488 | $656 | $976K | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 1,111 | $655 | $727K | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 1,171 | $654 | $765K | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 1,669 | $652 | $1.1M | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 1,095 | $651 | $713K | Form 4 ↗ | ||
| IDXX | Sell S | February 26, 2026 | March 2, 2026 | 4d | 1,281 | $651 | $834K | Form 4 ↗ | ||
| IDXX | Option / conversion M | February 26, 2026 | March 2, 2026 | 4d | 23,326 | $142 | $3.3M | Form 4 ↗ | ||
| IDXX | Option / conversion M | February 14, 2026 | February 17, 2026 | 3d | 1,099 | — | — | derivative | Form 4 ↗ | |
| IDXX | Option / conversion M | February 14, 2026 | February 17, 2026 | 3d | 958 | — | — | derivative | Form 4 ↗ | |
| IDXX | Other A | February 12, 2026 | February 17, 2026 | 5d | 13,407 | — | — | latederivative | Form 4 ↗ | |
| IDXX | Sell F | February 14, 2026 | February 17, 2026 | 3d | 915 | $629 | $576K | Form 4 ↗ | ||
| IDXX | Option / conversion M | February 14, 2026 | February 17, 2026 | 3d | 1,099 | — | — | Form 4 ↗ | ||
| IDXX | Option / conversion M | February 14, 2026 | February 17, 2026 | 3d | 958 | — | — | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| October 2, 2026 | Form 4 | 0001145197-26-000184 | 1 | published | EDGAR ↗ |
| July 2, 2026 | Form 4 | 0001145197-26-000155 | 1 | published | EDGAR ↗ |
| March 2, 2026 | Form 4 | 0000874716-26-000043 | 17 | published | EDGAR ↗ |
| February 17, 2026 | Form 4 | 0000874716-26-000024 | 6 | published | EDGAR ↗ |
Other insiders at IDEXX LABORATORIES INC /DE
- Erickson Michael G Executive Vice President 35 rows
- FENNELL GEORGE Executive Vice President 27 rows
- Hunt Nimrata Executive Vice President 25 rows
- Emerson Andrew EVP, CFO and Treasurer 18 rows
- Schreck Michael Executive Vice President 15 rows
- Underberg Sharon E. EVP, GC & Corporate Secretary 14 rows
- Lane Michael Executive Vice President 13 rows
- SAMAD SAM Executive Vice President & CFO 13 rows
- Smith Martin Alexander Executive Vice President 13 rows
- Kingsley Lawrence D Director 12 rows
Everyone on file, with contracts and lobbying under the company's name: IDEXX LABORATORIES INC /DE.
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 4 | 25 | February 17, 2026 | October 2, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.