OSI Systems Form 4: Grindstaff gains performance RSUs at $219.57

Rhea-AI Filing Summary

OSI Systems, Inc. (OSIS) – Form 4 insider transaction

Chief Human Resources Officer Glenn Grindstaff reported the receipt of 569 restricted stock units (RSUs) on 08/01/2025 under the company’s 2012 Incentive Award Plan. The units were booked at a reference price of $219.57 and are subject to performance-based vesting conditions. Following the award, Grindstaff’s direct holding increased to 8,923 common shares.

No derivative transactions or sales were disclosed. The filing indicates equity-based compensation rather than an open-market purchase, so cash outlay was zero and dilution immaterial to shareholders. Insider ownership rises marginally, potentially tightening alignment between management and investors.

Positive

• Officer’s stake increases by 569 shares, modestly improving management-investor alignment
• No insider sales or hedging transactions reported

Negative

• Grant is compensation-based, not an open-market purchase, limiting signaling value
• Size is immaterial relative to OSIS share count; negligible dilution impact

Insights

Securities Analyst

TL;DR: Routine RSU grant; minor alignment benefit, financially immaterial.

The 569-share award represents roughly 0.003% of OSIS’s 18.5 m shares outstanding, so portfolio impact is negligible. Because it is a compensation grant, not an open-market buy, it carries no additional insider cash commitment. However, the increase to 8,923 directly held shares signals continued long-term equity exposure by a senior officer. No red flags such as sales, derivative hedges or 10b5-1 plan usage appear. I view the disclosure as neutral-to-slightly positive for governance, with no valuation effect.

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	569	$219.57	$125K

Holdings After Transaction: Common Stock — 8,923 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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 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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CHIEF HUMAN RESOURCES OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
08/01/2025

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	08/01/2025		A		569(1)	A	$219.57	8,923	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. 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.

	/s/ Glenn Grindstaff	08/05/2025
	** 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

How many OSIS shares did Glenn Grindstaff acquire?

The Form 4 reports 569 restricted stock units were granted on 08/01/2025.

What is Glenn Grindstaff’s total direct ownership after the transaction?

Following the award, he holds 8,923 common shares of OSI Systems.

Was this an open-market purchase or a compensation grant?

The shares are performance-based RSUs issued under the company’s 2012 Incentive Award Plan, not an open-market buy.

At what reference price were the RSUs recorded?

The RSUs were booked at $219.57 per share for reporting purposes.

Does the filing include any derivative transactions?

No; Table II shows no options or other derivatives were acquired or disposed.