[Form 4] OSI Systems Inc Insider Trading Activity

Rhea-AI Filing Summary

Gerald M. Chizever, a director of OSI Systems, reported transactions in the company's common stock on 08/20/2025. The filing shows an acquisition of 873 shares at a price of $223.39 and a separate disposition of 4,276 shares on the same date. After these transactions the report lists 5,873 shares beneficially owned indirectly through The G&C Chizever Family Trust, for which Gerald and Caroline Chizever are trustees. The Form 4 is signed 08/22/2025 and indicates the filing was made by one reporting person.

Positive

• Purchase of 873 shares at $223.39 indicating additional insider investment on 08/20/2025
• Clear disclosure of indirect ownership through The G&C Chizever Family Trust with trustees named

Negative

• Disposition of 4,276 shares on 08/20/2025 representing a larger sale than the purchase reported
• Net position change not fully explained (the filing shows transactions but does not state prior total holdings)

Insights

Securities Analyst

TL;DR: Director executed both a small purchase and a larger sale on the same date, retaining indirect ownership via a family trust.

The filing documents a net disposition on 08/20/2025: 873 shares were bought at $223.39 while 4,276 shares were sold. The remaining 5,873 shares are held indirectly through The G&C Chizever Family Trust. For investors, the concrete takeaways are transaction sizes and the indirect ownership structure; there is no forward-looking commentary or company-level financial data in this filing.

Corporate Governance Expert

TL;DR: Transactions are reported properly and ownership is held via a family trust with trustees disclosed.

The Form 4 identifies Gerald M. Chizever as a director and discloses indirect beneficial ownership via a named family trust with Gerald and Caroline Chizever as trustees. The filing includes required signature and dates. The disclosure meets Section 16 reporting requirements by itemizing acquisitions and dispositions and stating the nature of indirect ownership; it does not present any governance actions or changes beyond the ownership report itself.

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
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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^*

CHIZEVER GERALD M

(Last) (First) (Middle)

12525 CHADRON AVENUE

(Street)

HAWTHORNE CA 90250

(City) (State) (Zip)

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

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

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

3. Date of Earliest Transaction (Month/Day/Year)
08/20/2025

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

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

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

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	08/20/2025		A		873	A	$223.39	5,873	I	See Footnote(1)
Common Stock								4,276	D

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. Consists of shares of common stock held by The G&C Chizever Family Trust. Gerald and Caroline Chizever Trustees.

	/s/ Gerald Chizever	08/22/2025
	** 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.

FAQ

What insider transactions did OSIS director Gerald Chizever report on 08/20/2025?

The Form 4 reports an acquisition of 873 shares at $223.39 and a disposition of 4,276 shares on 08/20/2025.

How many OSIS shares does Gerald Chizever beneficially own after the reported transactions?

The filing shows 5,873 shares beneficially owned indirectly through The G&C Chizever Family Trust.

What is the ownership form disclosed for Gerald Chizever's holdings in OSIS?

Ownership is disclosed as indirect (I), consisting of shares held by The G&C Chizever Family Trust with Gerald and Caroline Chizever as trustees.

When was the Form 4 signed and filed?

The Form 4 is signed by Gerald Chizever on 08/22/2025; the reported transactions occurred on 08/20/2025.

What role does Gerald M. Chizever have at OSI Systems?

The filing identifies Gerald M. Chizever as a Director of OSI Systems, and the Form 4 was filed by one reporting person.