Jonathan Jay Mazelsky

CIK: 0001556270

Transaction Breakdown

Open Market Buys (P)1 (1.7%)

High conviction signal

Open Market Sales (S)23 (39.0%)

Position reduction

Option Exercises (M)9 (15.3%)

Derivative conversions

Awards (A)23 (39.0%)

Compensation grants

Other (G, F, J, C, D, …)3 (5.1%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (3)

PODD

INSULET CORP

Director

XRAY

DENTSPLY SIRONA Inc.

Director

IDXX

IDEXX LABORATORIES INC /DE

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (59 total)

XRAY
DENTSPLY SIRONA Inc.
Dec 31, 2026
Award(A)
Phantom Stock (Directors' Deferred Compensation) DDC
Direct
2.6K shares at avg. $11.37-
PODD
INSULET CORP
Sep 30, 2026
Award(A)
Direct
141 shares at avg. $130.47$18K
XRAY
DENTSPLY SIRONA Inc.
Sep 30, 2026
Award(A)
Phantom Stock (Directors' Deferred Compensation) DDC
Direct
3.3K shares at avg. $9.03-
PODD
INSULET CORP
Jul 1, 2026
Award(A)
Direct
1.4K shares-
XRAY
DENTSPLY SIRONA Inc.
Jun 30, 2026
Award(A)
Phantom Stock (Directors' Deferred Compensation) DDC
Direct
2.8K shares at avg. $10.56-
XRAY
DENTSPLY SIRONA Inc.
Jun 12, 2026
Purchase(P)
Direct
10K shares at avg. $10.14$101K
XRAY
DENTSPLY SIRONA Inc.
Jun 12, 2026
Award(A)
Direct
10K shares at avg. $10.14$101K
XRAY
DENTSPLY SIRONA Inc.
Jun 3, 2026
Award(A)
Direct
22.8K shares-
XRAY
DENTSPLY SIRONA Inc.
Mar 31, 2026
Award(A)
Phantom Stock (Directors' Deferred Compensation) DDC
Direct
2.6K shares at avg. $11.34-
IDXX
IDEXX LABORATORIES INC /DE
Feb 27, 2026
Exercise(M)
Direct
197 shares at avg. $505.53$100K
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
2.6K shares at avg. $663.04$1.7M
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
1.2K shares at avg. $661.10$793K
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
1.2K shares at avg. $653.68$765K
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
1K shares at avg. $662.16$662K
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
2.9K shares at avg. $657.84$1.9M
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Exercise(M)
Direct
23.3K shares at avg. $141.60$3.3M
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
3.7K shares at avg. $658.92$2.4M
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
1.1K shares at avg. $654.63$727K
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
1.3K shares at avg. $650.67$834K
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
1.5K shares at avg. $655.85$976K
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
1.1K shares at avg. $651.49$713K
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
2.9K shares at avg. $659.75$1.9M
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
1.7K shares at avg. $652.49$1.1M
IDXX
IDEXX LABORATORIES INC /DE
Feb 26, 2026
Sale(S)
Direct
1.3K shares at avg. $656.85$882K
IDXX
IDEXX LABORATORIES INC /DE
Feb 14, 2026
Tax Payment(F)
Direct
915 shares at avg. $629.35$576K

		Type	Shares	Price		Ownership
Dec 31, 2026	XRAY DENTSPLY SIRONA Inc.	Award(A) Phantom Stock (Directors' Deferred Compensation) DDC	2,638	$11.37	-	Direct
Sep 30, 2026	PODD INSULET CORP	Award(A)	141	$130.47	$18,396	Direct
Sep 30, 2026	XRAY DENTSPLY SIRONA Inc.	Award(A) Phantom Stock (Directors' Deferred Compensation) DDC	3,323	$9.03	-	Direct
Jul 1, 2026	PODD INSULET CORP	Award(A)	1,355	-	$0	Direct
Jun 30, 2026	XRAY DENTSPLY SIRONA Inc.	Award(A) Phantom Stock (Directors' Deferred Compensation) DDC	2,842	$10.56	-	Direct
Jun 12, 2026	XRAY DENTSPLY SIRONA Inc.	Purchase(P)	10,000	$10.14	$101,400	Direct
Jun 12, 2026	XRAY DENTSPLY SIRONA Inc.	Award(A)	10,000	$10.14	$101,400	Direct
Jun 3, 2026	XRAY DENTSPLY SIRONA Inc.	Award(A)	22,822	-	$0	Direct
Mar 31, 2026	XRAY DENTSPLY SIRONA Inc.	Award(A) Phantom Stock (Directors' Deferred Compensation) DDC	2,645	$11.34	-	Direct
Feb 27, 2026	IDXX IDEXX LABORATORIES INC /DE	Exercise(M)	197	$505.53	$99,589	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	2,589	$663.04	$1,716,621	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	1,200	$661.10	$793,317	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	1,171	$653.68	$765,455	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	1,000	$662.16	$662,157	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	2,860	$657.84	$1,881,433	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Exercise(M)	23,326	$141.60	$3,302,962	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	3,660	$658.92	$2,411,635	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	1,111	$654.63	$727,293	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	1,281	$650.67	$833,508	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	1,488	$655.85	$975,905	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	1,095	$651.49	$713,378	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	2,859	$659.75	$1,886,224	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	1,669	$652.49	$1,089,013	Direct
Feb 26, 2026	IDXX IDEXX LABORATORIES INC /DE	Sale(S)	1,343	$656.85	$882,143	Direct
Feb 14, 2026	IDXX IDEXX LABORATORIES INC /DE	Tax Payment(F)	915	$629.35	$575,855	Direct

1-25 of 59 transactions

About MAZELSKY JONATHAN JAY

MAZELSKY JONATHAN JAY (SEC CIK 0001556270) files insider reports with the SEC as Director of INSULET CORP (PODD), Director of DENTSPLY SIRONA Inc. (XRAY) and President and CEO of IDEXX LABORATORIES INC /DE (IDXX).

Signal8 holds 28 ownership filings by MAZELSKY JONATHAN JAY (1 Form 3, 27 Form 4), filed between Oct 1, 2024 and Oct 2, 2026. Those filings report 59 transactions, from Sep 30, 2024 to Sep 30, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on MAZELSKY JONATHAN JAY's filings is in CHARLOTTE, NC.

Recent filings by MAZELSKY JONATHAN JAY

Dec 31, 2026: Grant or award of XRAY derivative securities (Form 4, code A).
Sep 30, 2026: Grant or award of PODD shares (Form 4, code A).
Sep 30, 2026: Grant or award of XRAY derivative securities (Form 4, code A).
Jul 1, 2026: Grant or award of PODD shares (Form 4, code A).
Jun 30, 2026: Grant or award of XRAY derivative securities (Form 4, code A).

Other insiders filing for INSULET CORP (PODD)

Pease Flavia, EVP & CFO
Huffines Robert Luther, Director
McEvoy Ashley, President and CEO
Davis Lisa Blair, SVP, Chief HR Officer
STONESIFER TIMOTHY C., Director
BORIO LUCIANA, Director

How to read Form 4 transaction codes