<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
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SCHEDULE 13D (AMENDMENT NO.10)
Under the Securities Exchange Act of 1934
Data I/O Corporation
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(Name of Issuer)
Common Stock, No Par Value
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(Title of Class of Securities)
CUSIP Number: 237690102
Glen F. Ceiley
Bisco Industries, Inc.
704 W. Southern Ave.
Orange, CA 92865
(714) 283-7140
------------------------------------
(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)
March 16, 1999
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(Date of Event which Requires Filing of this Statement)
If the filing person has previously filed a statement on Schedule
13G to report the acquisition which is subject of this Schedule 13D,
and is filing this statement because of Rule 13d-1(b)(3) or (4),
check the following box: ( )
Page 1 of 11 Pages
Exhibit Index on Page 6.
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SCHEDULE 13D
CUSIP No. 237690102
1. Name of Reporting Person
Mr. Glen F. Ceiley
2. Check the Appropriate Box if a Member of a group (a) (X)
(b) ( )
3. SEC Use Only
4. Source of Funds
PF
5. Check Box if Disclosure of Legal Proceedings is Required
Pursuant to Items 2(d) or 2(e) ( )
6. Citizenship or Place of Organization
U.S.A.
Number of 7. Sole Voting Power
Shares
Beneficially 900 shares of Common Stock
Owned By
Each 8. Shared Voting Power
Reporting
Person 1,202,625 shares of Common Stock (See Item 5)
With
9. Sole Dispositive Power
900 shares of Common Stock
10. Shared Dispositive Power
1,202,625 shares of Common Stock (See Item 5)
11. Aggregate Amount Beneficially Owned by Each Reporting Person
1,202,625 shares of Common Stock (See Item 5)
12. Check Box if the Aggregate Amount in Row (11) Excludes
Certain Shares ( )
13. Percent of Class Represented by Amount in Row (11)
16.73%
14. Type of Reporting Person
IN
Page 2 of 11 Pages
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SCHEDULE 13D
CUSIP No. 237690102
1. Name of Reporting Person
Bisco Industries, Inc.
2. Check the Appropriate Box if a Member of a Group (a) (X)
(b) ( )
3. SEC Use Only
4. Source of Funds
WC
5. Check Box if Disclosure of Legal Proceedings is Required
Pursuant to Items 2(d) or 2(e) ( )
6. Citizenship or Place of Organization
Illinois
Number of 7. Sole Voting Power
Shares
Beneficially 792,400 shares of Common Stock (See Item 5)
Owned By
Each
Reporting 8. Shared Voting Power
Person
With 0
9. Sole Dispositive Power
792,400 shares of Common Stock (See Item 5)
10. Shared Dispositive Power
0
11. Aggregate Amount Beneficially Owned by Each Reporting Person
792,400 shares of Common Stock (See Item 5)
12. Check Box if the Aggregate Amount in Row (11) Excludes
Certain Shares ( )
13. Percent of Class Represented by Amount in Row (11)
11.03%
14. Type of Reporting Person
CO
Page 3 of 11 Pages
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SCHEDULE 13D
CUSIP No. 237690102
1. Name of Reporting Person
Bisco Industries, Inc. Profit Sharing and Savings Plan
2. Check the Appropriate Box if a Member of a Group (a) (X)
(b) ( )
3. SEC Use Only
4. Source of Funds
00
5. Check Box if Disclosure of Legal Proceedings is Required
Pursuant to Items 2(d) or 2(e) ( )
6. Citizenship or Place of Organization
U.S.A.
Number of 7. Sole Voting Power
Shares
Beneficially 409,325 shares of Common Stock (See Item 5)
Owned By
Each
Reporting 8. Shared Voting Power
Person
With 0
9. Sole Dispositive Power
409,325 shares of Common Stock (See Item 5)
10. Shared Dispositive Power
0
11. Aggregate Amount Beneficially Owned by Each Reporting Person
409,325 shares of Common Stock (See Item 5).
12. Check Box if the Aggregate Amount in Row (11) Excludes
Certain Shares ( )
13. Percent of Class Represented by Amount in Row (11)
5.70%
14. Type of Reporting Person
EP
Page 4 of 11 Pages
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Item 3. Source and Amount of Funds or Other Consideration
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Item 3 to Schedule 13D is amended as follows:
Mr. Ceiley purchased directly 900 shares for a total consideration of
$2,137.50 from his personal funds. Bisco purchased 792,400 shares for a total
consideration of $1,589,435.57. Bisco paid for such Shares from its working
capital, including funds made available in the ordinary course of business under
its working capital credit facility. The Plan purchased 409,325 shares for a
total consideration of $1,131,752.07 using funds held in the Plan for investment
purposes.
Page 5 of 11 Pages
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Item 7. Material to be Filed as Exhibits
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Exhibit 1. Joint Filing Agreement dated as of Page Number
March 18, 1999 11
Page 6 of 11 Pages
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SCHEDULE 1
The Reporting Persons have engaged in the following transactions in Shares since
February 9, 1999, the last day on which a transaction in the shares by the
reporting persons was reported on the Schedule 13D. All transactions involved
purchases of Shares on the NASDAQ.
<TABLE>
<CAPTION>
Transaction Number of Price
Date Shares Per Share* Purchaser
- ----------- ----------- ----------- ----------------------
<S> <C> <C> <C>
11-FEB-99 11,000 2.1647 BISCO
12-FEB-99 3,000 2.0625 BISCO
10-MAR-99 600 1.4375 PLAN
10-MAR-99 1,500 1.4375 BISCO
11-MAR-99 8,000 1.5000 PLAN
11-MAR-99 13,500 1.4375 BISCO
12-MAR-99 15,000 1.5000 BISCO
12-MAR-99 100 1.4375 PLAN
15-MAR-99 3,800 1.4375 PLAN
16-MAR-99 143,800 1.4442 BISCO
</TABLE>
* Excluding commissions
Page 7 of 11 pages
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SIGNATURE
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After reasonable inquiry and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct.
Dated: March 18, 1999
Glen F. Ceiley
--------------------------
Name: Glen F. Ceiley
Page 8 of 11 pages
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SIGNATURE
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After reasonable inquiry and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct.
Dated: March 18, 1999
Bisco Industries, Inc.
Glen F. Ceiley
---------------------------------
Name: Glen F. Ceiley
Title: President
Page 9 of 11 pages
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SIGNATURE
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After reasonable inquiry and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct.
Dated: March 18, 1999
Bisco Industries, Inc.
Profit Sharing And Savings Plan
Glen F. Ceiley
_______________________________
Name: Glen F. Ceiley
Title: Trustee
Page 10 of 11 Pages
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EXHIBIT 1
JOINT FILING AGREEMENT
----------------------
In accordance with rule 13d-(f) promulgated under the Securities Exchange Act of
1934, as amended, the undersigned hereby agree to the joint filing with all
other Reporting Persons (as such term is defined in the Schedule 13D referred to
below) on behalf of each of them of a statement on Schedule 13D (including
amendments thereto) with respect to the common stock. no par value (the "Common
Stock"), of Data I/O Corporation, a Washington corporation, and that this
Agreement be included as an Exhibit to such joint filing. This Agreement may be
executed in any number of counterparts, all of which taken together shall
constitute one and the same instrument.
IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of
March 18, 1999.
/s/ GLEN F. CEILEY
----------------------
Glen F. Ceiley
Bisco Industries, Inc.
/s/ GLEN F. CEILEY
----------------------
Name: Glen F. Ceiley
Title: President
Bisco Industries, Inc.
Profit Sharing and Savings Plan
/s/ GLEN F. CEILEY
----------------------
Name: Glen F. Ceiley
Title: Trustee
Page 11 of 11 Pages
