OSI Systems (OSIS) awards 610-share RSU grant to Spacelabs Healthcare president

Rhea-AI Filing Summary

OSI Systems, Inc. reported that Paul Constantine, President of Spacelabs Healthcare, received a grant/award acquisition of 610 shares of common stock on July 31, 2026 at $221.39 per share. The award is in the form of RSUs that vest 25% on each annual anniversary of the grant date over four years, subject to continued employment, bringing his direct holdings to 2,049 shares.

Insider Trade Summary

Net Buyer: 610 shares

Net Buy 1 txn

Insider Constantine W Paul

Role PRES., SPACELABS HEALTHCARE

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	610	$221.39	$135K

Holdings After Transaction: Common Stock — 2,049 shares (Direct)

Footnotes (1)

1. F1. 25% of these RSUs shall vest on each annual anniversary of the date of grant over four years, subject to the Reporting Person's continued employment with the Issuer.

Key Figures

Shares granted: 610 shares Grant value per share: $221.39 per share Post-transaction holdings: 2,049 shares +2 more

5 metrics

Shares granted 610 shares Grant/award acquisition of common stock to Paul Constantine on July 31, 2026

Grant value per share $221.39 per share Reported transaction price per share for the 610-share grant

Post-transaction holdings 2,049 shares Total direct common stock holdings following the RSU-based grant

Annual vesting rate 25% per year Portion of RSUs that vest on each annual anniversary of the grant date

Vesting period 4 years RSUs vest over four years, subject to continued employment

Key Terms

RSUs, vest, annual anniversary

3 terms

RSUs financial

"25% of these RSUs shall vest on each annual anniversary"

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.

vest financial

"25% of these RSUs shall vest on each annual anniversary"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

annual anniversary financial

"25% of these RSUs shall vest on each annual anniversary"

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/04/2026 - 04:31 PM Accepted by SEC EDGAR 08/04/2026 - 04:30 PM Learn about SEC filing dates

FAQ

What insider transaction did OSIS report for executive Paul Constantine?

OSI Systems reported that Paul Constantine received a grant of 610 shares of common stock in the form of RSUs on July 31, 2026. The transaction is coded as a grant/award acquisition and increases his direct ownership in the company.

How many OSIS shares were granted to Paul Constantine and at what value?

Paul Constantine was granted 610 shares of OSI Systems common stock at a reported value of $221.39 per share. This equity award reflects the grant-date value used in the Form 4 and is structured as restricted stock units (RSUs).

What is the vesting schedule of the RSUs granted to OSIS executive Paul Constantine?

The RSU grant to Paul Constantine vests 25% on each annual anniversary of the grant date over four years. Vesting is subject to his continued employment with OSI Systems, meaning unvested units depend on him remaining with the company.

What is Paul Constantine’s role at OSI Systems (OSIS)?

Paul Constantine is reported as an officer of OSI Systems with the title President, Spacelabs Healthcare. The Form 4 identifies him in this leadership role in connection with the equity grant of 610 RSU-based common shares.

How many OSIS shares does Paul Constantine own after this reported grant?

After the reported grant, Paul Constantine beneficially owns 2,049 shares of OSI Systems common stock directly. This total includes the 610-share RSU-based award reported in the Form 4, as reflected in the post-transaction holdings figure.

Are the RSUs granted to Paul Constantine at OSI Systems subject to employment conditions?

Yes. The footnote states that 25% of the RSUs vest each year on the grant’s annual anniversary over four years, subject to his continued employment with OSI Systems. If employment ends, remaining unvested RSUs may not vest.

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^*

Constantine W Paul

(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)
	PRES., SPACELABS HEALTHCARE

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		610(1)	A	$221.39	2,049	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. 25% of these RSUs shall vest on each annual anniversary of the date of grant over four years, subject to the Reporting Person's continued employment with the Issuer.

	/s/ Wilson Paul Constantine	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)