<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. ____)*
Cardiac Pathways Corporation
(Name of Issuer)
Common Stock Par Value $.001
(Title of Class of Securities)
141408104
(CUSIP Number)
*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 cover 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).
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Cusip No. 141408104 13G Page 2 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Oak Investment Partners IV, Limited Partnership
06-1237975
- ---------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [ ]
(b) [ ]
- ---------------------------------------------------------------------
3 SEC Use Only
- ---------------------------------------------------------------------
4 Citizenship or Place of Organization
Delaware
- ---------------------------------------------------------------------
Number of (5) Sole Voting Power 464,385 shares of
Shares common stock
Bene-
ficially (6) Shared Voting Power Not applicable
Owned by
Each (7) Sole Dispositive Power 464,385 shares of
Reporting common stock
Person
With (8) Shared Dispositive Power Not applicable
- ---------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each
Reporting Person
464,385 shares of common stock
- ---------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [ ]
- ---------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
4.99%
- ---------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
PN
<PAGE>
Cusip No. 141408104 13G Page 3 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Oak Associates IV, Limited Partnership
06-1237974
- --------------------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [_]
(b) [_]
- --------------------------------------------------------------------------------
3 SEC Use Only
- --------------------------------------------------------------------------------
4 Citizenship or Place of Organization
Delaware
- --------------------------------------------------------------------------------
Number of (5) Sole Voting Power Not applicable
Shares
Bene- (6) Shared Voting Power 464,385 shares of
ficially common stock
Owned by
Each (7) Sole Dispositive Power Not applicable
Reporting
Person (8) Shared Dispositive Power 464,385 shares of
With common stock
- --------------------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each
Reporting Person
464,385 shares of common stock
- --------------------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [_]
- --------------------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
4.99%
- --------------------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
PN
<PAGE>
Cusip No. 141408104 13G Page 4 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Oak IV Affiliates Fund, Limited Partnership
06-1256163
- --------------------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [_]
(b) [_]
- --------------------------------------------------------------------------------
3 SEC Use Only
- --------------------------------------------------------------------------------
4 Citizenship or Place of Organization
Delaware
- --------------------------------------------------------------------------------
Number of (5) Sole Voting Power 21,171 shares of
Shares common stock
Bene-
ficially (6) Shared Voting Power Not applicable
Owned by
Each (7) Sole Dispositive Power 21,171 shares of
Reporting common stock
Person
With (8) Shared Dispositive Power Not applicable
- --------------------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each Reporting Person
21,171 shares of common stock
- --------------------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [_]
- --------------------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
0.2%
- --------------------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
PN
<PAGE>
Cusip No. 141408104 13G Page 5 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Oak IV Affiliates
06-1256164
- --------------------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [_]
(b) [_]
- --------------------------------------------------------------------------------
3 SEC Use Only
- --------------------------------------------------------------------------------
4 Citizenship or Place of Organization
Delaware
- --------------------------------------------------------------------------------
Number of (5) Sole Voting Power Not applicable
Shares
Bene- (6) Shared Voting Power 21,171 shares of
ficially common stock
Owned by
Each (7) Sole Dispositive Power Not applicable
Reporting
Person (8) Shared Dispositive Power 21,171 shares of
With common stock
- --------------------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each
Reporting Person
21,171 shares of common stock
- --------------------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [_]
- --------------------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
0.2%
- --------------------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
PN
<PAGE>
Cusip No. 141408104 13G Page 6 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Oak Management Corporation
06-0990851
- ---------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [ ]
(b) [ ]
- ---------------------------------------------------------------------
3 SEC Use Only
- ---------------------------------------------------------------------
4 Citizenship or Place of Organization
Delaware
- ---------------------------------------------------------------------
Number of (5) Sole Voting Power Not applicable
Shares
Bene- (6) Shared Voting Power 485,556 shares of
ficially common stock
Owned by
Each (7) Sole Dispositive Power Not applicable
Reporting
Person (8) Shared Dispositive Power 485,556 shares of
With common stock
- ---------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each
Reporting Person
485,556 shares of common stock
- ---------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [ ]
- ---------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
5.2%
- ---------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
CO
<PAGE>
Cusip No. 141408104 13G Page 7 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Bandel L. Carano
- --------------------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [ ]
(b) [ ]
- --------------------------------------------------------------------------------
3 SEC Use Only
- --------------------------------------------------------------------------------
4 Citizenship or Place of Organization
United States
- --------------------------------------------------------------------------------
Number of (5) Sole Voting Power Not applicable
Shares
Bene- (6) Shared Voting Power 485,556 shares of common stock
ficially
Owned by
Each (7) Sole Dispositive Power Not applicable
Reporting
Person (8) Shared Dispositive Power 485,556 shares of common stock
With
- --------------------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each Reporting Person
485,556 shares of common stock
- --------------------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes Certain Shares
(See Instructions) [ ]
- --------------------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
5.2%
- --------------------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
IN
<PAGE>
Cusip No. 141408104 13G Page 8 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Gerald R. Gallagher
- --------------------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [ ]
(b) [ ]
- --------------------------------------------------------------------------------
3 SEC Use Only
- --------------------------------------------------------------------------------
4 Citizenship or Place of Organization
United States
- --------------------------------------------------------------------------------
Number of (5) Sole Voting Power Not applicable
Shares
Bene- (6) Shared Voting Power 485,556 shares of
ficially common stock
Owned by
Each (7) Sole Dispositive Power Not applicable
Reporting
Person (8) Shared Dispositive Power 485,556 shares of
With common stock
- --------------------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each
Reporting Person
485,556 shares of common stock
- --------------------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [ ]
- --------------------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
5.2%
- --------------------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
IN
<PAGE>
Cusip No. 141408104 13G Page 9 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Edward F. Glassmeyer
- --------------------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [___]
(b) [___]
- --------------------------------------------------------------------------------
3 SEC Use Only
- --------------------------------------------------------------------------------
4 Citizenship or Place of Organization
United States
- --------------------------------------------------------------------------------
Number of (5) Sole Voting Power Not applicable
Shares
Bene- (6) Shared Voting Power 485,556 shares of
ficially common stock
Owned by
Each (7) Sole Dispositive Power Not applicable
Reporting
Person (8) Shared Dispositive Power 485,556 shares of
With common stock
- --------------------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each Reporting Person
485,556 shares of common stock
- --------------------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [___]
- --------------------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
5.2%
- --------------------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
IN
<PAGE>
Cusip No. 141408104 13G Page 10 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Fredric W. Harman
- --------------------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [ ]
(b) [ ]
- --------------------------------------------------------------------------------
3 SEC Use Only
- --------------------------------------------------------------------------------
4 Citizenship or Place of Organization
United States
- --------------------------------------------------------------------------------
Number of (5) Sole Voting Power Not applicable
Shares
Bene- (6) Shared Voting Power 485,556 shares of
ficially common stock
Owned by
Each (7) Sole Dispositive Power Not applicable
Reporting
Person (8) Shared Dispositive Power 485,556 shares of
With common stock
- --------------------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each
Reporting Person
485,556 shares of common stock
- --------------------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [ ]
- --------------------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
5.2%
- --------------------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
IN
<PAGE>
Cusip No. 141408104 13G Page 11 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Ann H. Lamont
- --------------------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [___]
(b) [___]
- --------------------------------------------------------------------------------
3 SEC Use Only
- --------------------------------------------------------------------------------
4 Citizenship or Place of Organization
United States
- --------------------------------------------------------------------------------
Number of (5) Sole Voting Power Not applicable
Shares
Bene- (6) Shared Voting Power 485,556 shares of
ficially common stock
Owned by
Each (7) Sole Dispositive Power Not applicable
Reporting
Person (8) Shared Dispositive Power 485,556 shares of
With common stock
- --------------------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each Reporting Person
485,556 shares of common stock
- --------------------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [___]
- --------------------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
5.2%
- --------------------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
IN
<PAGE>
Cusip No. 141408104 13G Page 12 of 19 Pages
1 Names of Reporting Persons
S.S. or I.R.S. Identification Nos. of Above Persons
Eileen M. More
- --------------------------------------------------------------------------------
2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [___]
(b) [___]
- --------------------------------------------------------------------------------
3 SEC Use Only
- --------------------------------------------------------------------------------
4 Citizenship or Place of Organization
United States
- --------------------------------------------------------------------------------
Number of (5) Sole Voting Power Not applicable
Shares
Bene- (6) Shared Voting Power 485,556 shares of
ficially common stock
Owned by
Each (7) Sole Dispositive Power Not applicable
Reporting
Person (8) Shared Dispositive Power 485,556 shares of
With common stock
- --------------------------------------------------------------------------------
9 Aggregate Amount Beneficially Owned by Each Reporting Person
485,556 shares of common stock
- --------------------------------------------------------------------------------
10 Check if the Aggregate Amount in Row (9) Excludes
Certain Shares (See Instructions) [___]
- --------------------------------------------------------------------------------
11 Percent of Class Represented by Amount in Row 9
5.2%
- -------------------------------------------------------------------
12 Type of Reporting Person (See Instructions)
IN
<PAGE>
Page 13 of 19 pages
Schedule 13G
Common Stock, Par Value $.001
CUSIP No. 141408104
Item 1(a) Name of Issuer:
Cardiac Pathways Corporation
Item 1(b) Address of Issuer's Principal Executive Offices:
955 Benecia Avenue
Sunnyvale, CA 94086
Item 2(a) Name of Person filing:
Oak Investment Partners IV, Limited Partnership
Oak Associates IV, Limited Partnership
Oak IV Affiliates Fund, Limited Partnership
Oak IV Affiliates
Oak Management Corporation
Bandel L. Carano
Gerald R. Gallagher
Edward F. Glassmeyer
Fredric W. Harman
Ann H. Lamont
Eileen M. More
Item 2(b) Address of Principal Business Office or, if none, Residence:
c/o Oak Management Corporation
One Gorham Island
Westport, CT 06880
Item 2(c) Citizenship:
Please refer to Item 4 on each cover sheet for each filing person
Item 2(d) Title of Class of Securities:
Common stock, $.001 par value
Item 2(e) CUSIP Number: 141408104
Item 3 Not Applicable.
Item 4 Ownership.
The approximate percentages of shares of Common Stock reported as
beneficially owned by the Reporting Entities is based upon 9,304,766 shares
outstanding as of October 31, 1996, as reported in
<PAGE>
the Issuer's Quarterly Report on Form 10-Q for the fiscal quarter ended
September 30, 1996, plus the shares issuable upon exercise of the warrants
described in the following sentence. Amounts shown as beneficially owned
include currently exercisable Warrants to purchase 6,376 shares of Common Stock
and 291 shares of Common Stock held by Oak Investment Partners IV, Limited
Partnership, and Oak IV Affiliates Fund, Limited Partnership, respectively.
Please see Items 5, 6, 7, 8, 9 and 11 for each cover sheet for each filing
entity.
Item 5 Ownership of Five Percent or Less of a Class.
Not applicable
Item 6 Ownership of More than Five Percent on Behalf of Another Person.
Not applicable
Item 7 Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on By the Parent Holding Company.
Not applicable
Item 8 Identification and Classification of Members of the Group.
Not applicable
Item 9 Notice of Dissolution of Group.
Not applicable
Item 10 Certification.
Not applicable
<PAGE>
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.
Dated February 13, 1997
Oak Investment Partners IV
Limited Partnership
By: Oak Associates IV,
Limited Partnership,
As General Partner
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
Oak Associates IV, Limited Partnership
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
Oak IV Affiliates Fund, Limited
Partnership
By: Oak IV Affiliates, As General Partner
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
Oak IV Affiliates
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
<PAGE>
OAK MANAGEMENT CORPORATION
By: /s/ Edward F. Glassmeyer
------------------------------------
Name:
Title:
/s/ Bandel L. Carano
------------------------------------
Bandel L. Carano
/s/ Fredric W. Harman
------------------------------------
Fredric W. Harman
/s/ Gerald R. Gallagher
------------------------------------
Gerald R. Gallagher
/s/ Edward F. Glassmeyer
------------------------------------
Edward F. Glassmeyer
/s/ Ann H. Lamont
------------------------------------
Ann H. Lamont
/s/ Eileen M. More
------------------------------------
Eileen M. More
<PAGE>
INDEX TO EXHIBITS
-----------------
Page
----
EXHIBIT A Agreement of Reporting Persons 18
<PAGE>
Exhibit A
---------
Each of the undersigned hereby agrees that the Schedule 13G filed on the
date hereof with respect to the shares of Common Stock of Cardiac Pathways
Corporation has been filed on behalf of the undersigned.
Signature:
- ----------
Dated February 13, 1997
Oak Investment Partners IV
Limited Partnership
By: Oak Associates IV,
Limited Partnership,
As General Partner
By: /s/ Edward F. Glassmeyer
-----------------------------
General Partner
Oak Associates IV, Limited Partnership
By: /s/ Edward F. Glassmeyer
------------------------------
General Partner
Oak IV Affiliates Fund, Limited
Partnership
By: Oak IV Affiliates, As General Partner
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
Oak IV Affiliates
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
<PAGE>
OAK MANAGEMENT CORPORATION
By: /s/ Edward F. Glassmeyer
------------------------------------
Name: Edward F. Glassmeyer
Title: President
/s/ Bandel L. Carano
------------------------------------
Bandel L. Carano
/s/ Fredric W. Harman
------------------------------------
Fredric W. Harman
/s/ Gerald R. Gallagher
------------------------------------
Gerald R. Gallagher
/s/ Edward F. Glassmeyer
------------------------------------
Edward F. Glassmeyer
/s/ Ann H. Lamont
------------------------------------
Ann H. Lamont
/s/ Eileen M. More
------------------------------------
Eileen M. More
