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| FORM 3 | U.S. SECURITIES AND EXCHANGE COMMISSION
+--------+ WASHINGTON, D.C. 20549
INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,
Section 17(a) of the Public Utility Holding Company Act of 1935 or
Section 30(f) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person
Mehra Ajay
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(Last) (First) (Middle)
12525 Chadron Avenue
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(Street)
Hawthorne California 90250
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(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year) 10/1/97
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3. IRS or Social Security Number of Reporting Person (Voluntary) 000-00-0000
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4. Issuer Name and Ticker or Trading Symbol OSIS
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5. Relationship of Reporting Person to Issuer (Check all applicable)
[X] Director [X] Officer [ ] 10% Owner [ ] Other
(give title below) (specify below)
Vice President, Chief Financial Officer, Secretary and Director
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6. If Amendment, Date of Original (Month/Day/Year)
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TABLE I--NON-DERIVATIVE SECURITIES BENEFICIALLY OWNED
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1. Title 2. Amount of 3. Ownership Form: 4. Nature of
of Securities Bene- Direct (D) or Indirect Bene-
Security ficially Owned Indirect (I) ficial Ownership
(Instr. 4) (Instr. 4) (Instr. 5) (Instr. 5)
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Common Stock,
no par value 195,693* D
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*Includes 45,000 shares issuable pursuant to fully vested options.
Reminder: Report on a separate line for each class of securities beneficially
owned directly or indirectly. (Print or Type Responses)
FORM 3 (continued)
TABLE II--DERIVATIVE SECURITIES BENEFICIALLY OWNED
(e.g., puts, calls, warrants, options, convertible securities)
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1. Title of Derivative 2. Date Exer- 3. Title and Amount of Securities 4. Conversion 5. Ownership 6. Nature of In-
Security (Instr. 4) cisable and Underlying Derivative Security or Form of direct Bene-
Expiration (Instr. 4) Exercise Derivative ficial
Date Price Security: Ownership
(Month/Day/ of Direct (D) (Instr. 5)
Year) Derivative or In-
---------------------------------------------------- Security direct (I)
Date Expira- Amount or (Instr. 5)
Exer- tion Title Number of
cisable Date Shares
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Options to Purchase
Common Stock * 5/31/02 Common Stock 10,000 $13.50 D
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Options to Purchase
Common Stock * 5/31/02 Common Stock 30,000 $11.50 D
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Options to Purchase
Common Stock ** 3/01/98 Common Stock 15,000 $1.87 D
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Options to Purchase
Common Stock ** 10/01/98 Common Stock 30,000 $2.33 D
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Explanation of Responses:
*Vest over a four-year period from the date of grant.
**Fully vested.
***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 provided is insufficient, See Instruction 6 for procedure.
/s/ Ajay Mehra 9/30/97
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**Signature of Reporting Person Date
By:
For: