OSI Systems grants 6,437 RSUs to general counsel

SZE VICTOR S reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

SZE VICTOR S reported acquisition or exercise transactions in this Form 4 filing.

OSI Systems’ general counsel, Victor S. Sze, received a grant of 6,437 restricted stock units of common stock on July 31, 2026 at a reference value of $221.39 per share under the Amended and Restated 2012 Incentive Award Plan, with vesting and final share amount tied to performance targets. Following this award, he directly holds 93,761 common shares and also reports 5,388 shares held indirectly through the “Victor So-Mien Sze & Angela Hsin-Chi Hsu Co-ttee Sze Trust U/T/A DTD 11/25/2014.”

Insider Trade Summary

Grant/Award: 6,437 shares

Grant/Award 2 txns

Insider SZE VICTOR S

Role GENERAL COUNSEL

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	6,437	$221.39	$1.43M
holding	Common Stock F2	--	--	--

Holdings After Transaction: Common Stock — 93,761 shares (Direct); Common Stock — 5,388 shares (Indirect, Please see footnote)

Footnotes (2)

1. F1. Shares are restricted stock units issued to the Reporting Person pursuant to the OSI Systems, Inc. Amended and Restated 2012 Incentive Award Plan. Vesting and amount of shares are subject to achievement of performance targets.
2. F2. Victor So-Mien Sze & Angela Hsin-Chi Hsu Co-ttee Sze Trust U/T/A DTD 11/25/2014

Key Figures

RSUs Granted: 6,437 shares Grant Reference Price: $221.39 per share Direct Holdings After Grant: 93,761 shares +1 more

4 metrics

RSUs Granted 6,437 shares Restricted stock units of common stock granted on 2026-07-31

Grant Reference Price $221.39 per share Value assigned to the 6,437 RSUs

Direct Holdings After Grant 93,761 shares Common stock directly owned by Victor S. Sze following the grant

Indirect Holdings 5,388 shares Common stock held indirectly via the Sze/Hsu trust

Key Terms

restricted stock units, Amended and Restated 2012 Incentive Award Plan, indirect ownership

3 terms

restricted stock units financial

"Shares are restricted stock units issued to the Reporting Person pursuant..."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Amended and Restated 2012 Incentive Award Plan financial

"issued to the Reporting Person pursuant to the OSI Systems, Inc. Amended and Restated 2012 Incentive Award Plan"

indirect ownership financial

"total_shares_following_transaction 5,388.0000, ownership_type indirect, nature_of_ownership trust"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did OSI Systems (OSIS) general counsel Victor S. Sze report?

Victor S. Sze reported receiving a grant of 6,437 restricted stock units of OSI Systems common stock. The award is part of the company’s Amended and Restated 2012 Incentive Award Plan and is subject to performance-based vesting conditions.

How many OSI Systems (OSIS) shares does Victor S. Sze hold after this award?

After the award, Victor S. Sze directly holds 93,761 common shares of OSI Systems. He also reports 5,388 shares held indirectly through the “Victor So-Mien Sze & Angela Hsin-Chi Hsu Co-ttee Sze Trust U/T/A DTD 11/25/2014.”

What are the terms of the 6,437 RSUs granted to OSI Systems (OSIS) general counsel?

The 6,437 RSUs were issued under OSI Systems’ Amended and Restated 2012 Incentive Award Plan at a reference price of $221.39 per share. Both vesting and final share amount depend on the achievement of specified performance targets.

Are Victor S. Sze’s OSI Systems (OSIS) RSUs part of a Rule 10b5-1 trading plan?

The Rule 10b5-1 trading plan checkbox is not marked for this insider report. That indicates the reported grant of 6,437 restricted stock units was not designated as executed under a Rule 10b5-1 pre-arranged trading plan.

How does Victor S. Sze hold OSI Systems (OSIS) shares indirectly?

He reports 5,388 OSI Systems shares as indirectly owned through the “Victor So-Mien Sze & Angela Hsin-Chi Hsu Co-ttee Sze Trust U/T/A DTD 11/25/2014.” The nature of this indirect ownership is described by that trust arrangement.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/04/2026 - 04:32 PM Accepted by SEC EDGAR 08/04/2026 - 04:30 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SZE VICTOR S

(Last) (First) (Middle)

12525 CHADRON AVE

(Street)

HAWTHORNE CALIFORNIA 90250

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
OSI SYSTEMS INC [ OSIS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	GENERAL COUNSEL

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/31/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/31/2026		A		6,437(1)	A	$221.39	93,761	D
Common Stock								5,388	I	Please see footnote(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Shares are restricted stock units issued to the Reporting Person pursuant to the OSI Systems, Inc. Amended and Restated 2012 Incentive Award Plan. Vesting and amount of shares are subject to achievement of performance targets.

2. Victor So-Mien Sze & Angela Hsin-Chi Hsu Co-ttee Sze Trust U/T/A DTD 11/25/2014

	/s/ Victor Sze	08/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)