-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, PAp2s1QiPUzaf/OjsG3I5bwtyPopZrVXSu4n4dtaU7+xhrf2sWh5iEPJq+MN1XB1 ZAdSnSmZNH5LjuSE7rQ4dg== 0000950005-98-000105.txt : 19980212 0000950005-98-000105.hdr.sgml : 19980212 ACCESSION NUMBER: 0000950005-98-000105 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 19980211 SROS: NASD SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: POWER INTEGRATIONS INC CENTRAL INDEX KEY: 0000833640 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 943065014 STATE OF INCORPORATION: CA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: SEC FILE NUMBER: 005-52867 FILM NUMBER: 98530395 BUSINESS ADDRESS: STREET 1: 477 NORTH MATHILDA AVENUE CITY: SUNNYVALE STATE: CA ZIP: 94086 BUSINESS PHONE: 4085239210 MAIL ADDRESS: STREET 1: 477 NORTH MATHILDA AVENUE CITY: SUNNYVALE STATE: CA ZIP: 94086 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: INTERWEST PARTNERS V LP CENTRAL INDEX KEY: 0000908156 STANDARD INDUSTRIAL CLASSIFICATION: [] STATE OF INCORPORATION: CA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 3000 SAND HILL RD BLDG 3 STREET 2: SUITE 255 CITY: MENLO PARK STATE: CA ZIP: 94025 SC 13G 1 FORM SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 Power Integrations, Inc. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock - -------------------------------------------------------------------------------- (Title of Class of Securities) 739276 10 3 - -------------------------------------------------------------------------------- (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). Page 1 of 14 Pages
- --------------------------------------------- ------------------------------------ 13G CUSIP No. 739276 10 3 Page 2 of 14 Pages ----------- - --------------------------------------------- ------------------------------------ - --------- ------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS InterWest Partners V, LP - --------- ------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] - --------- ------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - --------- ------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION California - ----------------------------- -------- -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 731,814 -------- -------------------------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 0 -------- -------------------------------------------------------------------------------- EACH REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 731,814 -------- -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 0 - --------- ------------------------------------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 731,814 - --------- ------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - --------- ------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.1% - --------- ------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - --------- ------------------------------------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!
Page 2 of 14 Pages
- --------------------------------------------- ------------------------------------ 13G CUSIP No. 739276 10 3 Page 3 of 14 Pages ------------ - --------------------------------------------- ------------------------------------ - --------- ------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS InterWest Management Partners V, L.P. - --------- ------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] - --------- ------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - --------- ------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION California - ----------------------------- -------- -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 731,814 -------- -------------------------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 0 -------- -------------------------------------------------------------------------------- EACH REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 731,814 -------- -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 0 - ----------------------------- -------- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 731,814 - --------- ------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - --------- ------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.1% - --------- ------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - --------- ------------------------------------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!
Page 3 of 14 Pages
- --------------------------------------------- ------------------------------------ 13G CUSIP No. 739276 10 3 Page 4 of 14 Pages ----------- - --------------------------------------------- ------------------------------------ - --------- ------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Alan W. Crites - --------- ------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] - --------- ------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - --------- ------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - ----------------------------- -------- -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 0 -------- -------------------------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 736,347 -------- -------------------------------------------------------------------------------- EACH REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 0 -------- -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 736,347 - --------- ------------------------------------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 736,347 - --------- ------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - --------- ------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.1% - --------- ------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - --------- ------------------------------------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!
Page 4 of 14 Pages
- --------------------------------------------- ------------------------------------ 13G CUSIP No. 739276 10 3 Page 5 of 14 Pages ----------- - --------------------------------------------- ------------------------------------ - --------- ------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Philip T. Gianos - --------- ------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] - --------- ------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - --------- ------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - ----------------------------- -------- -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 5,000 -------- -------------------------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 731,814 -------- -------------------------------------------------------------------------------- EACH REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 5,000 -------- -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 731,814 - ----------------------------- -------- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 736,814 - --------- ------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - --------- ------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.1% - --------- ------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - --------- ------------------------------------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!
Page 5 of 14 Pages
- --------------------------------------------- ------------------------------------ 13G CUSIP No. 739276 10 3 Page 6 of 14 Pages ------------ - --------------------------------------------- ------------------------------------ - --------- ------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Wallace R. Hawley - --------- ------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] - --------- ------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - --------- ------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - ----------------------------- -------- -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 0 -------- -------------------------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 736,347 -------- -------------------------------------------------------------------------------- EACH REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 0 -------- -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 736,347 - ----------------------------- -------- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 736,347 - --------- ------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - --------- ------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.1% - --------- ------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - --------- ------------------------------------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!
Page 6 of 14 Pages
- --------------------------------------------- ------------------------------------ 13G CUSIP No. 739276 10 3 Page 7 of 14 Pages ----------- - --------------------------------------------- ------------------------------------ - --------- ------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS W. Scott Hedrick - --------- ------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] - --------- ------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - --------- ------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - ----------------------------- -------- -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 0 -------- -------------------------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 736,347 -------- -------------------------------------------------------------------------------- EACH REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 0 -------- -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 736,347 - --------- ------------------------------------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 736,347 - --------- ------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - --------- ------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.1% - --------- ------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - --------- ------------------------------------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!
Page 7 of 14 Pages
- --------------------------------------------- ------------------------------------ 13G CUSIP No. 739276 10 3 Page 8 of 14 Pages ----------- - --------------------------------------------- ------------------------------------ - --------- ------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS W. Stephen Holmes - --------- ------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] - --------- ------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - --------- ------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - ----------------------------- -------- -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 0 -------- -------------------------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 736,347 -------- -------------------------------------------------------------------------------- EACH REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 0 -------- -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 736,347 - --------- ------------------------------------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 736,347 - --------- ------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - --------- ------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.1% - --------- ------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - --------- ------------------------------------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!
Page 8 of 14 Pages
- --------------------------------------------- ------------------------------------ 13G CUSIP No. 739276 10 3 Page 9 of 14 Pages ----------- - --------------------------------------------- ------------------------------------ - --------- ------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Robert R. Momsen - --------- ------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] - --------- ------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - --------- ------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - ----------------------------- -------- -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 0 -------- -------------------------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 736,347 -------- -------------------------------------------------------------------------------- EACH REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 0 -------- -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 736,347 - --------- ------------------------------------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 736,347 - --------- ------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - --------- ------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.1% - --------- ------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - --------- ------------------------------------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!
Page 9 of 14 Pages
- --------------------------------------------- ------------------------------------ 13G CUSIP No. 739276 10 3 Page 10 of 14 Pages ----------- - --------------------------------------------- ------------------------------------ - --------- ------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Arnold L. Oronsky - --------- ------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] - --------- ------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - --------- ------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - ----------------------------- -------- -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 0 -------- -------------------------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 731,814 -------- -------------------------------------------------------------------------------- EACH REPORTING PERSON WITH 7 SOLE DISPOSITIVE POWER 0 -------- -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 731,814 - ----------------------------- -------- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 731,814 - --------- ------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - --------- ------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.1% - --------- ------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - --------- ------------------------------------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!
Page 10 of 14 Pages Item 1. (a) Name of Issuer: Power Integrations, Inc. ("Issuer") (b) Address of Issuer's Principal Executive Offices: 477 North Mathilda Avenue Sunnyvale, CA 94086 Item 2. (a) Name of Person(s) Filing: InterWest Partners V, L.P. ("IWP V") InterWest Management Partners V, L.P. ("IMP V") Alan W. Crites ("Crites") Philip T. Gianos ("Gianos") Wallace R. Hawley ("Hawley") W. Scott Hedrick ("Hedrick") W. Stephen Holmes ("Holmes") Robert R. Momsen ("Momsen") Arnold L. Oronsky ("Oronsky") (b) Address of Principal Business Office or, if none, Residence: 3000 Sand Hill Road Building 3, Suite 255 Menlo Park, CA 94025 (c) Citizenship/Place of Organization: IWP V: California IMP V: California Crites: United States Gianos: United States Hawley: United States Hedrick: United States Holmes: United States Momsen: United States Oronsky: United States (d) Title of Class of Securities: Common Stock (e) CUSIP Number: 739276 10 3 Item 3. Not applicable. Page 11 of 14 Pages Item 4 Ownership.
- ------ ------------- ---------- ---------- ------------- ---------- ---------------- Other IWP V IMP V Gianos Oronsky Individuals* - ------ ------------- ---------- ---------- ------------- ---------- ---------------- (a) Beneficial Ownership 731,814 731,814 736,814 731,814 736,347** - ------ ------------- ---------- ---------- ------------- ---------- ---------------- (b) Percentage of Class 6.1% 6.1% 6.1% 6.1% 6.1% - ------ ------------- ---------- ---------- ------------- ---------- ---------------- (c) Sole Voting Power 731,814 731,814 5,000 0 0 - ------ ------------- ---------- ---------- ------------- ---------- ---------------- Shared Voting Power 0 0 731,814 731,814 736,347 - ------ ------------- ---------- ---------- ------------- ---------- ---------------- Sole Dispositive Power 731,814 731,814 5,000 0 0 - ------ ------------- ---------- ---------- ------------- ---------- ---------------- Shared Dispositive Power 0 0 731,814 731,814 736,347 - ------ ------------- ---------- ---------- ------------- ---------- ---------------- *Individuals included in this column are Crites, Hawley, Hedrick, Holmes and Momsen **Includes 4,533 shares of Issuer's Common stock held by InterWest Investors V, a general partnership, of which Crites, Hawley, Hedrick, Holmes and Momsen are general partners
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 Under certain circumstances set forth in the partnership agreement of IMP V, the general partners and/or limited partners of such partnership have the right to receive dividends from, or the proceeds from the sale of, the Common Stock of Issuer beneficially owned by such Partnership. 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 No reporting person is a member of a group as defined in section 240.13d-1(b)(1)(iii)(H) of the Act. Item 9. Notice of Dissolution of Group Not applicable. Item 10. Certification Not applicable EXHIBITS A. Joint Filing Statement Page 12 of 14 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. Date: February ____, 1998 INTERWEST PARTNERS V, L.P. By: InterWest Management Partners V, L.P. _________________________ Alan W. Crites By: __________________________________ General Partner _________________________ Philip T. Gianos INTERWEST MANAGEMENT PARTNERS V, L.P. _________________________ By: ________________________________________ Wallace R. Hawley General Partner _________________________ W. Scott Hedrick _________________________ W. Stephen Holmes _________________________ Robert R. Momsen _________________________ Arnold L. Oronsky Page 13 of 14 pages EXHIBIT A We, the undersigned, hereby express our agreement that the attached Schedule 13G is filed on behalf of each of us. Date: February ____, 1998 INTERWEST PARTNERS V, L.P. By: InterWest Management Partners V, L.P. _________________________ Alan W. Crites By: __________________________________ General Partner _________________________ Philip T. Gianos INTERWEST MANAGEMENT PARTNERS V, L.P. _________________________ By: ______________________________________ Wallace R. Hawley General Partner _________________________ W. Scott Hedrick _________________________ W. Stephen Holmes _________________________ Robert R. Momsen _________________________ Arnold L. Oronsky Page 14 of 14 pages -----END PRIVACY-ENHANCED MESSAGE-----