Mazelsky Jonathan Jay's Form 4 filing
IDEXX Laboratories IncIDXX · filed Nov 5, 2026
- Accession no.
- 0000874716-26-000144
- Filed
- Nov 5, 2026, 5:01 PM ET
- Trade date
- Nov 4, 2026
- Filing delay
- 1 day
- Rule 10b5-1 plan
- Not checked
This filing lists 14 non-derivative transactions and 1 derivative transaction. Open-market sales total $17.7M. It was filed 1 day after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Mazelsky Jonathan JayCIK 0001556270 | Director, Officer (Executive Chair of the Board) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Nov 4, 2026 | Common Stock | MOption exerciseAcquired | +25,140 | $178.26 | +$4,481,456.4 | 108,943.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −1,945 | $698.26F1 | −$1,358,120.56 | 106,998.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −4,075 | $699.33F2 | −$2,849,760.79 | 102,923.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −1,667 | $700.33F3 | −$1,167,441.78 | 101,256.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −4,540 | $701.36F4 | −$3,184,158.06 | 96,716.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −2,136 | $702.21F5 | −$1,499,922.06 | 94,580.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −3,950 | $703.45F6 | −$2,778,623.55 | 90,630.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −240 | $705.59 | −$169,341.6 | 90,390.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −840 | $707.00F7 | −$593,880 | 89,550.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −1,840 | $707.84F8 | −$1,302,433.88 | 87,710.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −1,300 | $709.00F9 | −$921,702.47 | 86,410.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −1,501 | $710.12F10 | −$1,065,891.17 | 84,909.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −775 | $711.31F11 | −$551,264.09 | 84,134.302 | Direct | |
| Nov 4, 2026 | Common Stock | SSaleDisposed | −331 | $711.95F12 | −$235,654.62 | 83,803.302 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Nov 4, 2026 | Common Stock | MOption exerciseDisposed | −25,140 | –F14 | – | 0 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F1
Represents the weighted average price of the shares sold ranging from a low of $697.80 to a high of $698.77 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F2
Represents the weighted average price of the shares sold ranging from a low of $698.92 to a high of $699.89 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F3
Represents the weighted average price of the shares sold ranging from a low of $700.00 to a high of $700.80 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F4
Represents the weighted average price of the shares sold ranging from a low of $701.005 to a high of $701.96 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F5
Represents the weighted average price of the shares sold ranging from a low of $702.00 to a high of $702.81 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F6
Represents the weighted average price of the shares sold ranging from a low of $703.04 to a high of $703.99 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F7
Represents the weighted average price of the shares sold ranging from a low of $706.60 to a high of $707.16 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F8
Represents the weighted average price of the shares sold ranging from a low of $707.645 to a high of $708.59 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F9
Represents the weighted average price of the shares sold ranging from a low of $708.65 to a high of $709.46 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F10
Represents the weighted average price of the shares sold ranging from a low of $709.815 to a high of $710.63 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F11
Represents the weighted average price of the shares sold ranging from a low of $710.82 to a high of $711.73 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F12
Represents the weighted average price of the shares sold ranging from a low of $711.845 to a high of $712.34 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price.
Referenced by the price of 1 transaction in Table I.
- F14
Not applicable.
Referenced by the price of 1 transaction in Table II.