STOCK TITAN

OSI Systems (NASDAQ: OSIS) director withholds 166 shares to cover tax liability

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

OSI Systems director Gerald M. Chizever reported a tax-withholding transaction involving 166 shares of common stock on July 28, 2026. The shares were withheld at $217.30 per share to cover tax liabilities, and no shares were sold in the market. After this, he holds 3,265 shares directly and 7,411 shares indirectly through The G&C Chizever Family Trust.

Positive

  • None.

Negative

  • None.
Insider CHIZEVER GERALD M
Role Director
Type Security Shares Price Value
Tax Withholding Common Stock F1 166 $217.30 $36K
holding Common Stock F2 -- -- --
Holdings After Transaction: Common Stock — 3,265 shares (Direct); Common Stock — 7,411 shares (Indirect, See Footnote)
Footnotes (2)
  1. F1. Pursuant with a net settlement, shares of stock were tendered to pay for the tax withholding. No shares of stock were sold.
  2. F2. Consists of shares of common stock held by The G&C Chizever Family Trust. Gerald and Caroline Chizever Trustees.
Shares withheld for taxes 166 shares Common stock tendered in net settlement for tax withholding on July 28, 2026
Withholding price per share $217.30 per share Value applied to the 166 withheld shares used to satisfy tax liability
Direct holdings after transaction 3,265 shares Common stock held directly by Gerald M. Chizever following the tax-withholding disposition
Indirect holdings via family trust 7,411 shares Common stock held indirectly through The G&C Chizever Family Trust with Gerald and Caroline Chizever as trustees
net settlement financial
"Pursuant with a net settlement, shares of stock were tendered to pay"
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.
indirect financial
"total_shares_following_transaction": "7411.0000", "direct_or_indirect": "I""
Family Trust financial
"held by The G&C Chizever Family Trust. Gerald and Caroline Chizever Trustees"

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Learn about SEC filing dates

FAQ

What insider transaction did OSIS director Gerald M. Chizever report?

Gerald M. Chizever reported a tax-withholding disposition of 166 shares of OSI Systems common stock. The shares were withheld at $217.30 per share to satisfy tax obligations, and a footnote clarifies that no shares were sold in the market.

Was the OSIS insider Form 4 transaction an open-market sale?

No. The Form 4 states the 166 shares were tendered in a net settlement to pay tax withholding. A footnote explicitly notes that no shares of stock were sold, distinguishing this from an open-market sale transaction.

How many OSIS shares does Gerald M. Chizever hold directly after this filing?

Following the tax-withholding transaction, Gerald M. Chizever holds 3,265 shares of OSI Systems common stock directly. This post-transaction balance reflects the impact of the 166-share withholding used to cover his tax liability.

What indirect OSIS holdings are reported for Gerald M. Chizever?

The filing reports 7,411 shares of OSI Systems common stock held indirectly through The G&C Chizever Family Trust. A footnote explains these shares are held by the trust, with Gerald and Caroline Chizever serving as trustees.

At what price were OSIS shares used to cover Gerald M. Chizever’s taxes?

The 166 OSI Systems shares used for tax withholding were valued at $217.30 per share. This price is reported as the transaction price in the Form 4, reflecting the value applied in the net settlement for tax purposes.

Was the OSIS insider transaction under a Rule 10b5-1 trading plan?

No. The Rule 10b5-1 checkbox is not marked as an affirmative plan in this filing. The transaction is identified instead as a tax-withholding disposition, with shares tendered to satisfy tax obligations rather than sold under a preset plan.
SEC Form 4
FORM 4UNITED 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*
CHIZEVER GERALD M

(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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/28/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock07/28/2026F166(1)D$217.33,265D
Common Stock7,411ISee Footnote(2)
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Pursuant with a net settlement, shares of stock were tendered to pay for the tax withholding. No shares of stock were sold.
2. Consists of shares of common stock held by The G&C Chizever Family Trust. Gerald and Caroline Chizever Trustees.
/s/ Gerald Chizever07/29/2026
** Signature of Reporting PersonDate
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)