Glenn Grindstaff

CIK: 0001804609

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (12.5%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)5 (62.5%)

Compensation grants

Other (G, F, J, C, D, …)2 (25.0%)

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

Companies & Roles (1)

OSIS

OSI SYSTEMS INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (8 total)

OSIS
OSI SYSTEMS INC
Aug 24, 2026
Award(A)
Direct
2K shares at avg. $206.73$407K
OSIS
OSI SYSTEMS INC
Aug 24, 2026
Tax Payment(F)
Direct
1.7K shares at avg. $206.73$353K
OSIS
OSI SYSTEMS INC
Jul 31, 2026
Award(A)
Direct
610 shares at avg. $221.39$135K
OSIS
OSI SYSTEMS INC
Jun 30, 2026
Award(A)
Direct
17 shares at avg. $185.90$3K
OSIS
OSI SYSTEMS INC
Aug 26, 2025
Tax Payment(F)
Direct
2.2K shares at avg. $225.19$498K
OSIS
OSI SYSTEMS INC
Aug 26, 2025
Award(A)
Direct
2.6K shares at avg. $225.19$584K
OSIS
OSI SYSTEMS INC
Aug 1, 2025
Award(A)
Direct
569 shares at avg. $219.57$125K
OSIS
OSI SYSTEMS INC
May 8, 2025
Sale(S)
Direct
688 shares at avg. $224.89$155K

		Type	Shares	Price		Ownership
Aug 24, 2026	OSIS OSI SYSTEMS INC	Award(A)	1,969	$206.73	$407,051	Direct
Aug 24, 2026	OSIS OSI SYSTEMS INC	Tax Payment(F)	1,708	$206.73	$353,095	Direct
Jul 31, 2026	OSIS OSI SYSTEMS INC	Award(A)	610	$221.39	$135,048	Direct
Jun 30, 2026	OSIS OSI SYSTEMS INC	Award(A)	17	$185.90	$3,160	Direct
Aug 26, 2025	OSIS OSI SYSTEMS INC	Tax Payment(F)	2,213	$225.19	$498,345	Direct
Aug 26, 2025	OSIS OSI SYSTEMS INC	Award(A)	2,595	$225.19	$584,368	Direct
Aug 1, 2025	OSIS OSI SYSTEMS INC	Award(A)	569	$219.57	$124,935	Direct
May 8, 2025	OSIS OSI SYSTEMS INC	Sale(S)	688	$224.89	$154,724	Direct

1-8 of 8 transactions

About Grindstaff Glenn

Grindstaff Glenn (SEC CIK 0001804609) files insider reports with the SEC as CHIEF HUMAN RESOURCES OFFICER of OSI SYSTEMS INC (OSIS).

Signal8 holds 6 ownership filings by Grindstaff Glenn, all Form 4s, filed between May 9, 2025 and Aug 25, 2026. Those filings report 8 transactions, from May 8, 2025 to Aug 24, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Grindstaff Glenn's filings is in HAWTHORNE, CA.

Recent filings by Grindstaff Glenn

Aug 24, 2026: Grant or award of OSIS shares (Form 4, code A).
Aug 24, 2026: Tax withholding of OSIS shares (Form 4, code F).
Jul 31, 2026: Grant or award of OSIS shares (Form 4, code A).
Jun 30, 2026: Grant or award of OSIS shares (Form 4, code A).
Aug 26, 2025: 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
EDRICK ALAN I, EVP & CFO

How to read Form 4 transaction codes