OSI Systems (NASDAQ: OSIS) HR chief adds shares via ESPP grant

Rhea-AI Filing Summary

OSI Systems Inc. chief human resources officer Glenn Grindstaff acquired 17 shares of common stock at $185.90 per share. The shares were acquired pursuant to the issuer's Employee Stock Purchase Plan, increasing his direct holdings to 9,322 shares after the transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Grindstaff Glenn

Role CHIEF HUMAN RESOURCES OFFICER

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	17	$185.90	$3K

Holdings After Transaction: Common Stock — 9,322 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares acquired: 17 shares Transaction price: $185.90 per share Post-transaction holdings: 9,322 shares +1 more

4 metrics

Shares acquired 17 shares Grant/award acquisition of common stock

Transaction price $185.90 per share Price for acquired common shares

Post-transaction holdings 9,322 shares Total common shares held directly after transaction

Transaction code A Grant, award, or other acquisition

Key Terms

Employee Stock Purchase Plan, Common Stock, Grant, award, or other acquisition, non-derivative

4 terms

Employee Stock Purchase Plan financial

"Acquired pursuant to issuer's Employee Stock Purchase Plan."

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

Common Stock financial

"security_title: "Common Stock" in the non-derivative transaction"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

non-derivative financial

"transaction_type: "non-derivative" for the reported acquisition"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/01/2026 - 04:01 PM Accepted by SEC EDGAR 07/01/2026 - 04:00 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^*

Grindstaff Glenn

(Last) (First) (Middle)

12525 CHADRON AVENUE

(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)
	CHIEF HUMAN RESOURCES OFFICER

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

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	06/30/2026		A		17(1)	A	$185.9	9,322	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. Acquired pursuant to issuer's Employee Stock Purchase Plan.

	/s/ Glenn Grindstaff	07/01/2026
	** 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)

FAQ

What insider transaction did OSI Systems (OSIS) report for Glenn Grindstaff?

OSI Systems reported that chief human resources officer Glenn Grindstaff acquired 17 shares of common stock. The shares were received as part of a grant or award, rather than an open-market purchase, and are classified as a non-derivative acquisition.

At what price did Glenn Grindstaff acquire OSI Systems (OSIS) shares?

Glenn Grindstaff acquired 17 OSI Systems common shares at a price of $185.90 per share. This price is reported as the transaction price for the stock issued to him in this acquisition event.

How many OSI Systems (OSIS) shares does Glenn Grindstaff hold after this transaction?

After the reported acquisition, Glenn Grindstaff holds 9,322 OSI Systems common shares directly. This total reflects his position immediately following the 17-share grant reported in the Form 4 insider filing.

What was the code and nature of Glenn Grindstaff’s OSI Systems (OSIS) transaction?

The transaction used code "A," indicating a grant, award, or other acquisition of OSI Systems common stock. It is classified as a non-derivative acquisition, rather than a market trade like a regular open-market buy or sell.

Was Glenn Grindstaff’s OSI Systems (OSIS) share acquisition under an Employee Stock Purchase Plan?

Yes. A footnote states the 17 OSI Systems shares were acquired pursuant to the issuer's Employee Stock Purchase Plan. This indicates the shares were obtained through a company-sponsored employee equity program.

Does Glenn Grindstaff’s OSI Systems (OSIS) transaction involve any derivative securities?

No derivative securities are reported for this transaction. The Form 4 shows only a non-derivative acquisition of common stock, and the derivative position summary is empty for this filing.