<PAGE>
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. )*
------
CellNet Data Systems, Inc.
----------------------------------
(Name of Issuer)
Common Stock
----------------------------------
(Title of Class of Securities)
15115M 101
----------------------------------
(CUSIP Number)
Check the following box if a fee is being paid with this statement / /. (A
fee is not required only if the filing person: (1) has a previous statement on
file reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)
*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter the disclosures provided in a prior page.
The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).
(Continued on following page(s))
Page 1 of 13 Pages
---
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CUSIP No. 15115M101 13G Page 2 of 13 Pages
--------- --- ---
- -------------------------------------------------------------------------------
(1) Names of Reporting Persons. S.S. or I.R.S. Identification Nos. of Above
Persons
William C. Edwards
- -------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member (a) /X/
of a Group* (b) / /
- -------------------------------------------------------------------------------
(3) SEC Use Only
- -------------------------------------------------------------------------------
(4) Citizenship or Place of Organization
United States
- -------------------------------------------------------------------------------
Number of Shares (5) Sole Voting
Beneficially Power 2,942,012
Owned by --------------------------------------------------
Each Reporting (6) Shared Voting
Person With Power 949,838
--------------------------------------------------
(7) Sole Dispositive
Power 2,942,012
--------------------------------------------------
(8) Shared Dispositive
Power 949,838
- -------------------------------------------------------------------------------
(9) Aggregate Amount Beneficially Owned by Each Reporting Person
3,891,850
- -------------------------------------------------------------------------------
(10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*
- -------------------------------------------------------------------------------
(11) Percent of Class Represented by Amount in Row (9)
10.1%
- -------------------------------------------------------------------------------
(12) Type of Reporting Person*
00 (Group)
- -------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
CUSIP No. 15115M101 13G Page 3 of 13 Pages
--------- --- ---
- -------------------------------------------------------------------------------
(1) Names of Reporting Persons. S.S. or I.R.S. Identification Nos. of Above
Persons
William C. Edwards Trust, William L. Edwards and Cree A. Edwards, Trustees,
U/A DTD 12/8/92
- -------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member (a) /X/
of a Group* (b) / /
- -------------------------------------------------------------------------------
(3) SEC Use Only
- -------------------------------------------------------------------------------
(4) Citizenship or Place of Organization
United States
- -------------------------------------------------------------------------------
Number of Shares (5) Sole Voting
Beneficially Power 0
Owned by --------------------------------------------------
Each Reporting (6) Shared Voting
Person With Power 627,620
--------------------------------------------------
(7) Sole Dispositive
Power 0
--------------------------------------------------
(8) Shared Dispositive
Power 627,620
- -------------------------------------------------------------------------------
(9) Aggregate Amount Beneficially Owned by Each Reporting Person
627,620
- -------------------------------------------------------------------------------
(10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*
- -------------------------------------------------------------------------------
(11) Percent of Class Represented by Amount in Row (9)
1.6%
- -------------------------------------------------------------------------------
(12) Type of Reporting Person*
00 (Group)
- -------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
CUSIP No. 15115M101 13G Page 4 of 13 Pages
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- -------------------------------------------------------------------------------
(1) Names of Reporting Persons. S.S. or I.R.S. Identification Nos. of Above
Persons
William C. Edwards Charitable Remainder Trust dtd 7/15/92, Alan R. Brudos
and William C. Edwards, Trustees
- -------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member (a) /X/
of a Group* (b) / /
- -------------------------------------------------------------------------------
(3) SEC Use Only
- -------------------------------------------------------------------------------
(4) Citizenship or Place of Organization
United States
- -------------------------------------------------------------------------------
Number of Shares (5) Sole Voting
Beneficially Power 0
Owned by --------------------------------------------------
Each Reporting (6) Shared Voting
Person With Power 113,534
--------------------------------------------------
(7) Sole Dispositive
Power 0
--------------------------------------------------
(8) Shared Dispositive
Power 113,534
- -------------------------------------------------------------------------------
(9) Aggregate Amount Beneficially Owned by Each Reporting Person
113,534
- -------------------------------------------------------------------------------
(10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*
- -------------------------------------------------------------------------------
(11) Percent of Class Represented by Amount in Row (9)
.3%
- -------------------------------------------------------------------------------
(12) Type of Reporting Person*
00 (Group)
- -------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
CUSIP No. 15115M101 13G Page 5 of 13 Pages
--------- --- ---
- -------------------------------------------------------------------------------
(1) Names of Reporting Persons. S.S. or I.R.S. Identification Nos. of Above
Persons
Barbara Edwards
- -------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member (a) /X/
of a Group* (b) / /
- -------------------------------------------------------------------------------
(3) SEC Use Only
- -------------------------------------------------------------------------------
(4) Citizenship or Place of Organization
United States
- -------------------------------------------------------------------------------
Number of Shares (5) Sole Voting
Beneficially Power 91,044
Owned by --------------------------------------------------
Each Reporting (6) Shared Voting
Person With Power 0
--------------------------------------------------
(7) Sole Dispositive
Power 91,044
--------------------------------------------------
(8) Shared Dispositive
Power 0
- -------------------------------------------------------------------------------
(9) Aggregate Amount Beneficially Owned by Each Reporting Person
91,044
- -------------------------------------------------------------------------------
(10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*
- -------------------------------------------------------------------------------
(11) Percent of Class Represented by Amount in Row (9)
.2%
- -------------------------------------------------------------------------------
(12) Type of Reporting Person*
00 (Group)
- -------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
CUSIP No. 15115M101 13G Page 6 of 13 Pages
--------- --- ---
- -------------------------------------------------------------------------------
(1) Names of Reporting Persons. S.S. or I.R.S. Identification Nos. of Above
Persons
Katherine V. Gray
- -------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member (a) /X/
of a Group* (b) / /
- -------------------------------------------------------------------------------
(3) SEC Use Only
- -------------------------------------------------------------------------------
(4) Citizenship or Place of Organization
United States
- -------------------------------------------------------------------------------
Number of Shares (5) Sole Voting
Beneficially Power 58,820
Owned by --------------------------------------------------
Each Reporting (6) Shared Voting
Person With Power 0
--------------------------------------------------
(7) Sole Dispositive
Power 58,820
--------------------------------------------------
(8) Shared Dispositive
Power 0
- -------------------------------------------------------------------------------
(9) Aggregate Amount Beneficially Owned by Each Reporting Person
58,820
- -------------------------------------------------------------------------------
(10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*
- -------------------------------------------------------------------------------
(11) Percent of Class Represented by Amount in Row (9)
.15%
- -------------------------------------------------------------------------------
(12) Type of Reporting Person*
00 (Group)
- -------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
CUSIP No. 15115M101 13G Page 7 of 13 Pages
--------- --- ---
- -------------------------------------------------------------------------------
(1) Names of Reporting Persons. S.S. or I.R.S. Identification Nos. of Above
Persons
Kristin E. Gray
- -------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member (a) /X/
of a Group* (b) / /
- -------------------------------------------------------------------------------
(3) SEC Use Only
- -------------------------------------------------------------------------------
(4) Citizenship or Place of Organization
United States
- -------------------------------------------------------------------------------
Number of Shares (5) Sole Voting
Beneficially Power 58,820
Owned by --------------------------------------------------
Each Reporting (6) Shared Voting
Person With Power 0
--------------------------------------------------
(7) Sole Dispositive
Power 58,820
--------------------------------------------------
(8) Shared Dispositive
Power 0
- -------------------------------------------------------------------------------
(9) Aggregate Amount Beneficially Owned by Each Reporting Person
58,820
- -------------------------------------------------------------------------------
(10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*
- -------------------------------------------------------------------------------
(11) Percent of Class Represented by Amount in Row (9)
.15%
- -------------------------------------------------------------------------------
(12) Type of Reporting Person*
00 (Group)
- -------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
CUSIP No. 15115M101 Page 8 of 13 Pages
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ITEM 1(A). NAME OF ISSUER
CellNet Data Systems, Inc.
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ITEM 1(B). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES
125 Shoreway Road
San Carlos, CA 94070
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ITEM 2(A). NAME OF PERSON(S) FILING
William C. Edwards
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ITEM 2(B). ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE
Bryan and Edwards 3000 Sand Hill Road Building 1, Suite 190 Menlo Park, CA
94025
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ITEM 2(C). CITIZENSHIP
United States
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ITEM 2(D). TITLE OF CLASS OF SECURITIES
Common Stock
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ITEM 2(E). CUSIP NUMBER
15115M101
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ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULES 13D-1(B), OR 13D-2(B),
CHECK WHETHER THE PERSON FILING IS A
N/A
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ITEM 4. OWNERSHIP
(a) Amount Beneficially Owned:
3,891,850
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(b) Percent of Class:
10.1%
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- --------------
* Combined with other members of the group, the total ownership of the group
exceeds 5% of the class as of December 31, 1996.
<PAGE>
CUSIP No. 15115M101 Page 9 of 13 Pages
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(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote
Banner Partners, William C. Edwards and Alan R.
Brudos, General Partners 2,037,492
Banner Partners/Minaret wholy owned by Banner
Partners, William C. Edwards and Alan R.
Brudos, General Partners 553,298
Carson, a partnership, William C. Edwards,
General Partner 5,568
The Edwards Foundation, William C. Edwards, Trustee 114,534
William C. Edwards Revocable Trust U/A 9/22/88,
William C. Edwards Trustee 215,120
William C. Edwards, Trustee, Elizabeth Adams
Edwards Trust dtd 11/14/90 4,000
William C. Edwards, Trustee, Helen Grace Edwards
Trust dtd 11/14/90 4,000
William C. Edwards Trustee, Laura Ann Edwards Trust
dtd 11/14/90 4,000
William C. Edwards, Trustee, Scott Paul Edwards Trust
dtd 11/14/90 4,000
TOTAL 2,942,012
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(ii) shared power to vote or to direct the vote**
William C. Edwards Trust, William L. Edwards and Cree
A. Edwards, Trustees U/A DTD 12/8/92 627,620
William C. Edwards Charitable Remainder Trust dtd
7/15/92, Alan R. Brudos and William C. Edwards,
Trustee 113,534
Barbara Edwards 91,044
Katherine V. Gray 58,820
Kristin E. Gray 58,820
TOTAL 949,838
-----------------------------------------------------------------
- --------------
** William C. Edwards and the person or trustees to whom the shares are
registered can vote and dispose of these shares without the consent of the
other party.
<PAGE>
CUSIP No. 15115M101 Page 10 of 13 Pages
--------- --- ---
(iii) sole power to dispose or to direct the disposition of
Banner Partners, William C. Edwards and Alan R.
Brudos, General Partners 2,037,492
Banner Partners/Minaret wholy owned by Banner
Partners, William C. Edwards and Alan R.
Brudos, General Partners 553,298
Carson, a partnership, William C. Edwards,
General Partner 5,568
The Edwards Foundation, William C. Edwards, Trustee 114,534
William C. Edwards Revocable Trust U/A 9/22/88,
William C. Edwards Trustee 215,120
William C. Edwards, Trustee, Elizabeth Adams
Edwards Trust dtd 11/14/90 4,000
William C. Edwards, Trustee, Helen Grace Edwards
Trust dtd 11/14/90 4,000
William C. Edwards Trustee, Laura Ann Edwards Trust
dtd 11/14/90 4,000
William C. Edwards, Trustee, Scott Paul Edwards Trust
dtd 11/14/90 4,000
TOTAL 2,942,012
-----------------------------------------------------------------
(iv) shared power to dispose or to direct the disposition of**
William C. Edwards Trust, William L. Edwards and Cree
A. Edwards, Trustees U/A DTD 12/8/92 627,620
William C. Edwards Charitable Remainder Trust dtd
7/15/92, Alan R. Brudos and William C. Edwards,
Trustees 113,534
Barbara Edwards 91,044
Katherine V. Gray 58,820
Kristin E. Gray 58,820
TOTAL 949,838
-----------------------------------------------------------------
- --------------
** William C. Edwards and the person or trustees to whom the shares are
registered can vote and dispose of these shares without the consent of the
other party.
<PAGE>
CUSIP No. 15115M101 Page 11 of 13 Pages
--------- --- ---
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
N/A
- -------------------------------------------------------------------------------
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON
N/A
- -------------------------------------------------------------------------------
ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY
N/A
- -------------------------------------------------------------------------------
ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
See attached Exhibit A.
- -------------------------------------------------------------------------------
ITEM 9. NOTICE OF DISSOLUTION OF GROUP
N/A
- -------------------------------------------------------------------------------
ITEM 10. CERTIFICATION
N/A
By signing below I certify that, to the best of my knowledge and belief,
the securities referred to above were acquired in the ordinary course of
business and were not acquired for the purpose of and do not have the effect of
changing or influencing the control of the issuer of such securities and were
not acquired in connection with or as a participant in any transaction having
such purposes or effect.
<PAGE>
CUSIP No. 15115M101 Page 12 of 13 Pages
--------- --- ---
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
2-7-97
----------------------------------------
(Date)
/s/ W. C. Edwards
----------------------------------------
(Signature)
William C. Edwards
----------------------------------------
(Name/Title)
General Partner,
Banner Partners
2-10-97
----------------------------------------
(Date)
/s/ C. Edwards
----------------------------------------
(Signature)
William C. Edwards Trust, William L.
Edwards and Cree A. Edwards, Trustees
U/A DTD 12/8/92
----------------------------------------
(Name/Title)
2-7-97
----------------------------------------
(Date)
/s/ Alan R. Brudos
----------------------------------------
(Signature)
William C. Edwards Charitable
Remainder Trust dtd 7/15/92,
Alan R. Brudos and William C. Edwards
Trustees
----------------------------------------
(Name/Title)
<PAGE>
CUSIP No. 15115M101 Page 13 of 13 Pages
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2-7-97
----------------------------------------
(Date)
/s/ Bardara Edwards
----------------------------------------
(Signature)
Barbara Edwards
----------------------------------------
(Name/Title)
2-7-97
----------------------------------------
(Date)
/s/ Katherine V. Gray
----------------------------------------
(Signature)
Katherine V. Gray
----------------------------------------
(Name/Title)
2-7-97
----------------------------------------
(Date)
/s/ Kristin Gray
----------------------------------------
(Signature)
Kristin E. Gray
----------------------------------------
(Name/Title)
<PAGE>
CUSIP No. 15115M101
---------
EXHIBIT A
The following entities and individuals agree to vote their share as a group:
2-7-97
----------------------------------------
(Date)
/s/ W. C. Edwards
----------------------------------------
(Signature)
William C. Edwards
----------------------------------------
(Name/Title)
General Partner,
Banner Partners
2-10-97
----------------------------------------
(Date)
/s/ C. Edwards
----------------------------------------
(Signature)
William C. Edwards Trust, William L.
Edwards and Cree A. Edwards, Trustees
U/A DTD 12/8/92
----------------------------------------
(Name/Title)
2-7-97
----------------------------------------
(Date)
/s/ Alan R. Brudos
----------------------------------------
(Signature)
William C. Edwards Charitable
Remainder Trust dtd 7/15/92,
Alan R. Brudos and William C. Edwards
Trustees
----------------------------------------
(Name/Title)
<PAGE>
CUSIP No. 15115M101
---------
2-7-97
----------------------------------------
(Date)
/s/ Barbara Edwards
----------------------------------------
(Signature)
Barbara Edwards
----------------------------------------
(Name/Title)
2-7-97
----------------------------------------
(Date)
/s/ Katherine V. Gray
----------------------------------------
(Signature)
Katherine V. Gray
----------------------------------------
(Name/Title)
2/7/97
----------------------------------------
(Date)
/s/ Kristin Gray
----------------------------------------
(Signature)
Kristin E. Gray
----------------------------------------
(Name/Title)
