Gerald M. Chizever

CIK: 0001134261

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (33.3%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (22.2%)

Compensation grants

Other (G, F, J, C, D, …)4 (44.4%)

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

Companies & Roles (1)

OSIS

OSI SYSTEMS INC

Director

Discretionary Trading P&L

Holdings

Transaction History (9 total)

OSIS
OSI SYSTEMS INC
Aug 20, 2026
Tax Payment(F)
Direct
88 shares at avg. $220.92$19K
OSIS
OSI SYSTEMS INC
Aug 14, 2026
Tax Payment(F)
Direct
141 shares at avg. $228.56$32K
OSIS
OSI SYSTEMS INC
Jul 28, 2026
Tax Payment(F)
Direct
166 shares at avg. $217.30$36K
OSIS
OSI SYSTEMS INC
Jul 20, 2026
Award(A)
Direct
924 shares at avg. $216.65$200K
OSIS
OSI SYSTEMS INC
Jul 6, 2026
Tax Payment(F)
Direct
231 shares at avg. $221.76$51K
OSIS
OSI SYSTEMS INC
Aug 20, 2025
Award(A)
Indirect
873 shares at avg. $223.39$195K
OSIS
OSI SYSTEMS INC
Jan 27, 2025
Sale(S)
Indirect
2.7K shares at avg. $195.83$529K
OSIS
OSI SYSTEMS INC
Nov 7, 2024
Sale(S)
Indirect
2K shares at avg. $148.16$296K
OSIS
OSI SYSTEMS INC
Sep 11, 2024
Sale(S)
Direct
3K shares at avg. $138.41$415K

		Type	Shares	Price		Ownership
Aug 20, 2026	OSIS OSI SYSTEMS INC	Tax Payment(F)	88	$220.92	$19,441	Direct
Aug 14, 2026	OSIS OSI SYSTEMS INC	Tax Payment(F)	141	$228.56	$32,227	Direct
Jul 28, 2026	OSIS OSI SYSTEMS INC	Tax Payment(F)	166	$217.30	$36,072	Direct
Jul 20, 2026	OSIS OSI SYSTEMS INC	Award(A)	924	$216.65	$200,185	Direct
Jul 6, 2026	OSIS OSI SYSTEMS INC	Tax Payment(F)	231	$221.76	$51,227	Direct
Aug 20, 2025	OSIS OSI SYSTEMS INC	Award(A)	873	$223.39	$195,019	Indirect
Jan 27, 2025	OSIS OSI SYSTEMS INC	Sale(S)	2,701	$195.83	$528,937	Indirect
Nov 7, 2024	OSIS OSI SYSTEMS INC	Sale(S)	2,000	$148.16	$296,320	Indirect
Sep 11, 2024	OSIS OSI SYSTEMS INC	Sale(S)	3,000	$138.41	$415,230	Direct

1-9 of 9 transactions

About CHIZEVER GERALD M

CHIZEVER GERALD M (SEC CIK 0001134261) files insider reports with the SEC as Director of OSI SYSTEMS INC (OSIS).

Signal8 holds 9 ownership filings by CHIZEVER GERALD M, all Form 4s, filed between Sep 13, 2024 and Aug 21, 2026. Those filings report 9 transactions, from Sep 11, 2024 to Aug 20, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on CHIZEVER GERALD M's filings is in HAWTHORNE, CA.

Recent filings by CHIZEVER GERALD M

Aug 20, 2026: Tax withholding of OSIS shares (Form 4, code F).
Aug 14, 2026: Tax withholding of OSIS shares (Form 4, code F).
Jul 28, 2026: Tax withholding of OSIS shares (Form 4, code F).
Jul 20, 2026: Grant or award of OSIS shares (Form 4, code A).
Jul 6, 2026: Tax withholding of OSIS shares (Form 4, code F).

Other insiders filing for OSI SYSTEMS INC (OSIS)

Tropeano Michael, PRESIDENT, RAPISCAN SYSTEMS
SZE VICTOR S, GENERAL COUNSEL
Okawa Cary M., CHIEF ACCOUNTING OFFICER
Morben Paul Keith, PRES., OPTOELECTRONICS DIV
MEHRA AJAY, PRESIDENT AND CEO
Grindstaff Glenn, CHIEF HUMAN RESOURCES OFFICER

How to read Form 4 transaction codes