OSI Systems exec granted 287 RSUs, adjusts stake

OSI Systems Inc. (OSIS) reported that officer Michael Tropeano, President of Rapiscan Systems, received a grant of 287 shares of Common Stock on August 24, 2026, as RSUs issued pursuant to performance-based vesting.

Rhea-AI Filing Summary

OSI Systems Inc. (OSIS) reported that officer Michael Tropeano, President of Rapiscan Systems, received a grant of 287 shares of Common Stock on August 24, 2026, as RSUs issued pursuant to performance-based vesting. On the same date, 99 shares were disposed of via net share settlement to cover tax withholding, with no shares sold into the market. The beneficial-ownership balance was also adjusted to correct an earlier 466-share omission, which did not arise from a new transaction.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Tropeano Michael

Role PRESIDENT, RAPISCAN SYSTEMS

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2	287	$206.73	$59K
Tax Withholding	Common Stock F3	99	$206.73	$20K

Holdings After Transaction: Common Stock — 5,003 shares (Direct)

Footnotes (3)

1. F1. RSUs are issued pursuant to performance based vestings.
2. F2. The amount of securities beneficially owned following the reported transaction has been adjusted to reflect the reduction of 466 shares that were inadvertently omitted from prior ownership reports. This adjustment corrects the reporting of the Reporting Person's beneficial ownership and does not result from a current transaction.
3. F3. Pursuant with a net settlement, shares of stock were tendered to pay for the tax withholding. No shares of stock were sold.

Key Figures

RSU grant shares: 287 shares of Common Stock Grant price per share: $206.73 per share Shares tendered for tax withholding: 99 shares of Common Stock +2 more

5 metrics

RSU grant shares 287 shares of Common Stock Grant/award acquisition on August 24, 2026 at $206.73 per share

Grant price per share $206.73 per share Price associated with 287-share RSU-related acquisition on August 24, 2026

Shares tendered for tax withholding 99 shares of Common Stock Net settlement to pay tax withholding on August 24, 2026 at $206.73 per share

Tax withholding reference price $206.73 per share Used for 99-share tax-withholding disposition on August 24, 2026

Beneficial ownership correction 466 shares Reduction in previously reported beneficial ownership to correct prior reports

Key Terms

RSUs, performance based vestings, net settlement, beneficially owned, +1 more

5 terms

RSUs financial

"RSUs are issued pursuant to performance based vestings."

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

performance based vestings financial

"RSUs are issued pursuant to performance based vestings."

net settlement financial

"Pursuant with a net settlement, shares of stock were tendered"

beneficially owned financial

"The amount of securities beneficially owned following the reported transaction"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

tax withholding financial

"shares of stock were tendered to pay for the tax withholding."

Tax withholding is the practice of taking a portion of a payment—such as wages, dividends, or sale proceeds—before it reaches the recipient and sending that portion to the tax authority as an advance on the recipient’s eventual tax bill. For investors it matters because withholding reduces immediate cash received and affects after‑tax returns, estimated tax payments, and whether you may owe more or receive a refund when taxes are finally calculated, like having a small automatic savings set aside for your tax bill.

FAQ

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

What equity award did OSIS officer Michael Tropeano receive according to this Form 4?

Michael Tropeano received a grant of 287 shares of OSIS Common Stock on August 24, 2026. The footnotes state these RSUs are issued pursuant to performance-based vesting, meaning the award is tied to achieving performance criteria.

How many OSIS shares were used to cover Michael Tropeano’s tax withholding?

On August 24, 2026, 99 shares of OSIS Common Stock were tendered to pay tax withholding. The filing explains this occurred under a net settlement, and that no shares were sold in the market for this purpose.

Did the Form 4 for OSIS report any market sales of shares by Michael Tropeano?

No. The Form 4 states that in connection with tax withholding, shares were tendered under a net settlement and explicitly notes that no shares of stock were sold.

What correction to prior beneficial ownership reporting was disclosed for OSIS?

The filing discloses that the beneficial-ownership amount was adjusted to reflect a reduction of 466 shares that were inadvertently omitted from prior ownership reports. This correction does not result from a current transaction.

Are the RSUs reported for OSIS tied to performance conditions?

Yes. A footnote states that the RSUs are issued pursuant to performance based vestings, indicating the award vests based on performance criteria rather than solely on time.

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

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Available on EDGAR 08/26/2026 - 12:22 PM EDT Accepted by SEC EDGAR 08/26/2026 - 12:22 PM EDT 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^*

Tropeano Michael

(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)
	PRESIDENT, RAPISCAN SYSTEMS

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/24/2026

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	08/24/2026		A		287(1)	A	$206.73	5,102(2)	D
Common Stock	08/24/2026		F		99(3)	D	$206.73	5,003	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. RSUs are issued pursuant to performance based vestings.

2. The amount of securities beneficially owned following the reported transaction has been adjusted to reflect the reduction of 466 shares that were inadvertently omitted from prior ownership reports. This adjustment corrects the reporting of the Reporting Person's beneficial ownership and does not result from a current transaction.

3. Pursuant with a net settlement, shares of stock were tendered to pay for the tax withholding. No shares of stock were sold.

	/s/ Michael Tropeano	08/26/2026
	** 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)