<PAGE> 1
OMB APPROVAL
OMB Number: 3235-0145
Expires: October 31, 1997
Estimated average burden
hours per response . . .14.90
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. 1 )*
HMT Technology Corporation
(Name of Issuer)
Common Stock, $.001 par value
(Title of Class of Securities)
0004039171
(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 42 Pages
<PAGE> 2
CUSIP NO. 0004039171 13G PAGE 2 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Summit Ventures III, 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
Delaware limited partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 2 of 42 Pages
<PAGE> 3
CUSIP NO. 0004039171 13G PAGE 3 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Summit Partners III, 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
Delaware limited partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 3 of 42 Pages
<PAGE> 4
CUSIP NO. 0004039171 13G PAGE 4 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Summit Subordinated Debt Fund, 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
Delaware limited partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 4 of 42 Pages
<PAGE> 5
CUSIP NO. 0004039171 13G PAGE 5 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Summit Ventures IV, 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
Delaware limited partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 5 of 42 Pages
<PAGE> 6
CUSIP NO. 0004039171 13G PAGE 6 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Summit Partners IV, 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
Delaware limited partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 6 of 42 Pages
<PAGE> 7
CUSIP NO. 0004039171 13G PAGE 7 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Summit Partners SD, 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
Delaware limited partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 7 of 42 Pages
<PAGE> 8
CUSIP NO. 0004039171 13G PAGE 8 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Summit Investors II, 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
Delaware limited partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 8 of 42 Pages
<PAGE> 9
CUSIP NO. 0004039171 13G PAGE 9 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Stamps, Woodsum & Co. III
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [ ]
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Massachusetts general partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 9 of 42 Pages
<PAGE> 10
CUSIP NO. 0004039171 13G PAGE 10 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Stamps, Woodsum & Co. IV
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [ ]
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Massachusetts general partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 10 of 42 Pages
<PAGE> 11
CUSIP NO. 0004039171 13G PAGE 11 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
E. Roe Stamps, IV
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 11 of 42 Pages
<PAGE> 12
CUSIP NO. 0004039171 13G PAGE 12 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Stephen G. Woodsum
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 12 of 42 Pages
<PAGE> 13
CUSIP NO. 0004039171 13G PAGE 13 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Gregory M. Avis
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 13 of 42 Pages
<PAGE> 14
CUSIP NO. 0004039171 13G PAGE 14 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
John A. Genest
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 14 of 42 Pages
<PAGE> 15
CUSIP NO. 0004039171 13G PAGE 15 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Martin J. Mannion
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 15 of 42 Pages
<PAGE> 16
CUSIP NO. 0004039171 13G PAGE 16 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Ernest K. Jacquet
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 16 of 42 Pages
<PAGE> 17
CUSIP NO. 0004039171 13G PAGE 17 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Bruce R. Evans
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 17 of 42 Pages
<PAGE> 18
CUSIP NO. 0004039171 13G PAGE 18 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Thomas S. Roberts
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 18 of 42 Pages
<PAGE> 19
CUSIP NO. 0004039171 13G PAGE 19 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Walter G. Kortschak
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 9,420,940 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
9,420,940 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,420,940 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
22.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 19 of 42 Pages
<PAGE> 20
CUSIP NO. 0004039171 13G PAGE 20 OF 42 PAGES
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Joseph F. Trustey
- --------------------------------------------------------------------------------
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
0 shares
NUMBER OF
-------------------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 4,920,433 shares
-------------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares
-------------------------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
4,920,433 shares
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
4,920,433 shares
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11.5%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON *
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 20 of 42 Pages
<PAGE> 21
Schedule 13G
Item 1(a). Name of Issuer: HMT Technology Corporation
Item 1(b). Address of Issuer's Principal Executive Offices:
1055 Page Avenue, Fremont, CA 94538
Item 2(a). Names of Persons Filing: Summit Ventures III, L.P., Summit
Partners III, L.P., Summit Ventures IV, L.P., Summit Partners
IV, L.P., Summit Partners SD, L.P, Summit Subordinated Debt
Fund, L.P., Summit Investors II, L.P., Stamps, Woodsum & Co.
III, Stamps, Woodsum & Co. IV, and Messrs. E. Roe Stamps, IV,
Stephen G. Woodsum, Gregory M. Avis, John A. Genest, Martin J.
Mannion, Ernest K. Jacquet, Bruce R. Evans, Thomas S. Roberts,
Walter G. Kortschak and Joseph F. Trustey.
Summit Partners III, L.P. is the sole general partner of
Summit Ventures III, L.P. Summit Partners IV, L.P. is the sole
general partner of Summit Ventures IV, L.P. Summit Partners
SD, L.P. is the sole general partner of Summit Subordinated
Debt Fund, L.P. Stamps, Woodsum & Co. III is the sole general
partner of Summit Partners III, L.P. Stamps, Woodsum & Co. IV
is the sole general partner of Summit Partners IV, L.P.
Stamps, Woodsum & Co. III is the sole general partner of
Summit Partners SD, L.P. Messrs. Stamps, Woodsum, Avis,
Genest, Mannion, Jacquet, Evans, Roberts and Kortschak are
individual general partners of Stamps, Woodsum & Co. III,
Stamps, Woodsum & Co. IV and Summit Investors II, L.P. Messr.
Trustey is an individual general partner of Stamps, Woodsum &
Co. III, and Stamps, Woodsum & Co. IV.
Item 2(b). Address of Principal Business Office or, if None, Residence:
The address of the principal business office of Summit
Ventures III, L.P., Summit Ventures IV, L.P., Summit
Subordinated Debt Fund, L.P., Summit Investors II, L.P.,
Summit Partners III, L.P., Summit Partners IV, L.P., Summit
Partners SD, L.P., Stamps, Woodsum & Co. III, Stamps, Woodsum
& Co. IV, and Messrs. Stamps, Woodsum, Mannion, Genest,
Jacquet, Evans, Roberts and Trustey is Summit Partners, 600
Atlantic Avenue, Boston, Massachusetts 02210. The address of
the principal business office of Messrs. Avis and Kortschak is
Summit Partners, 499 Hamilton Avenue, Palo Alto, California
94301.
Item 2(c). Citizenship: Each of Summit Ventures III, L.P., Summit
Partners III, L.P., Summit Ventures IV, L.P., Summit Partners
IV, L.P., Summit Investors II, L.P., Summit Subordinated Debt
Fund, L.P. and Summit Partners SD, L.P. is a limited
partnership organized under the laws of the State of Delaware.
Each of Stamps, Woodsum & Co. III and Stamps, Woodsum & Co. IV
is a general partnership organized under the laws of the
Commonwealth of Massachusetts. Each of Messrs. Stamps,
Woodsum, Avis, Mannion, Genest, Jacquet, Evans, Roberts,
Kortschak and Trustey is a United States citizen.
Page 21 of 42 Pages
<PAGE> 22
Item 2(d). Title of Class of Securities: Common Stock, $.001 par value
per share.
Item 2(e). CUSIP Number:0004039171
Item 3. If this statement is filed pursuant to Rules 13d-1(b), or
13d-2(b), check whether the person filing is a:
(a) [ ] Broker or Dealer registered under Section
15 of the Securities Exchange Act of 1934 (the
"Act").
(b) [ ] Bank as defined in Section 3(a)(6) of the Act.
(c) [ ] Insurance Company as defined in Section
3(a)(19) of the Act.
(d) [ ] Investment Company registered under Section 8
of the Investment Company Act of 1940.
(e) [ ] Investment Adviser registered under Section 203
of the Investment Advisers Act of 1940.
(f) [ ] Employee Benefit Plan, Pension Fund which is
subject to the provisions of the Employee
Retirement Income Security Act of 1974 or
Endowment Fund; see Rule 13d-1(b)(1)(ii)(F) of
the Act.
(g) [ ] Parent Holding Company, in accordance with
Rule 13d-1(b)(ii)(G) of the Act.
(h) [ ] Group, in accordance with Rule
13d-1(b)(1)(ii)(H) of the Act.
Not Applicable
Item 4. Ownership.
(a) Amount Beneficially Owned:
Each of Summit Ventures IV, L.P., Summit Partners IV,
L.P., Summit Ventures III, L.P., Summit Partners III,
L.P., Summit Investors II, L.P., Stamps, Woodsum & Co.
IV, Stamps, Woodsum & Co. III, Summit Subordinated Debt
Fund, L.P. and Summit Partners SD, L.P. (individually an
"Entity" and collectively the "Entities") may be deemed
to own beneficially 9,420,940 shares of Common Stock as
of December 31, 1997. Each of Messrs. Stamps, Woodsum,
Avis, Mannion, Genest, Jacquet, Evans, Roberts and
Kortschak may be deemed to own beneficially 9,420,940
shares of
Page 22 of 42 Pages
<PAGE> 23
Common Stock as of December 31, 1997. Messr. Trustey may
be deemed to own 4,920,433 shares of Common Stock as of
December 31, 1997.
As of December 31, 1997, Summit Ventures III, L.P. was
the record owner of 4,338,070 shares of Common Stock. As
of December 31, 1997, Summit Investors II, L.P. was the
record owner of 162,437 shares of Common Stock. As of
December 31, 1997, Summit Ventures IV, L.P. was the
record owner of 4,338,070 shares of Common Stock. As of
December 31, 1997, Summit Subordinated Debt Fund, L.P.
was the record owner of 582,363 shares of Common Stock.
The shares held of record by Summit Ventures III, L.P.,
Summit Investors II, L.P., Summit Ventures IV, L.P. and
Summit Subordinated Debt Fund, L.P. are referred to
herein collectively as the "Record Shares." By virtue of
the affiliate relationships among the Entities, each
Entity may be deemed to own beneficially all of the
Record Shares. Hence, each Entity may be deemed to own
beneficially 9,420,940 shares of Common Stock. In their
capacities as individual general partners of Stamps,
Woodsum & Co. III, Stamps, Woodsum & Co. IV, and Summit
Investors II, L.P., each of Messrs. Stamps, Woodsum,
Avis, Mannion, Genest, Jacquet, Evans, Roberts and
Kortschak may be deemed to own beneficially 9,420,940
shares of Common Stock. In his capacity as individual
general partner of Stamps, Woodsum & Co. III and Stamps,
Woodsum & Co. IV, Messr. Trustey may be deemed to own
beneficially 4,920,433 shares of Common Stock.
(b) Percent of Class:
Summit Ventures II, L.P.: 22.0%
Summit Partners II, L.P.: 22.0%
Summit Ventures III, L.P.: 22.0%
Summit Partners III, L.P.: 22.0%
Summit Subordinated Debt Fund, L.P.: 22.0%
Summit Partners SD, L.P.: 22.0%
Summit Investors II, L.P.: 22.0%
Stamps, Woodsum & Co. III: 22.0%
Stamps, Woodsum & Co. IV: 22.0%
E. Roe Stamps, IV: 22.0%
Stephen G. Woodsum: 22.0%
Gregory M. Avis: 22.0%
Martin J. Mannion: 22.0%
John A. Genest: 22.0%
Ernest K. Jacquet: 22.0%
Bruce R. Evans: 22.0%
Walter G. Kortschak: 22.0%
Thomas S. Roberts: 22.0%
Joseph F. Trustey: 11.5%
Page 23 of 42 Pages
<PAGE> 24
The foregoing percentages are calculated based on the 42,658,949
shares of Common Stock reported to be outstanding in a Quarterly
Report on Form 10-Q for HMT Technology Corporation for the quarter
ended September 30, 1997.
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote:
0 shares for each reporting person
(ii) shared power to vote or to direct the vote:
Summit Ventures III, L.P.: 9,420,940 shares
Summit Partners III, L.P.: 9,420,940 shares
Summit Ventures IV, L.P.: 9,420,940 shares
Summit Partners IV, L.P.: 9,420,940 shares
Summit Subordinated Debt Fund, L.P. 9,420,940 shares
Summit Partners SD, L.P.: 9,420,940 shares
Summit Investors II, L.P.: 9,420,940 shares
Stamps, Woodsum & Co. III: 9,420,940 shares
Stamps, Woodsum & Co. IV: 9,420,940 shares
E. Roe Stamps, IV: 9,420,940 shares
Stephen G. Woodsum: 9,420,940 shares
Gregory M. Avis: 9,420,940 shares
Martin J. Mannion: 9,420,940 shares
John A. Genest: 9,420,940 shares
Ernest K. Jacquet: 9,420,940 shares
Bruce R. Evans: 9,420,940 shares
Walter G. Kortschak: 9,420,940 shares
Thomas S. Roberts: 9,420,940 shares
Joseph F. Trustey: 4,920,433 shares
(iii) sole power to dispose or direct the disposition of:
0 shares for each reporting person
(iv) shared power to dispose or direct the disposition of:
Summit Ventures III, L.P.: 9,420,940 shares
Summit Partners III, L.P.: 9,420,940 shares
Summit Ventures IV, L.P.: 9,420,940 shares
Summit Partners IV, L.P.: 9,420,940 shares
Summit Subordinated Debt Fund, L.P.: 9,420,940 shares
Page 24 of 42 Pages
<PAGE> 25
Summit Partners SD, L.P.: 9,420,940 shares
Summit Investors II, L.P.: 9,420,940 shares
Stamps, Woodsum & Co. III: 9,420,940 shares
Stamps, Woodsum & Co. IV: 9,420,940 shares
E. Roe Stamps, IV: 9,420,940 shares
Stephen G. Woodsum: 9,420,940 shares
Gregory M. Avis: 9,420,940 shares
Martin J. Mannion: 9,420,940 shares
John A. Genest: 9,420,940 shares
Ernest K. Jacquet: 9,420,940 shares
Bruce R. Evans: 9,420,940 shares
Walter G. Kortschak: 9,420,940 shares
Thomas S. Roberts: 9,420,940 shares
Joseph F. Trustey: 4,920,433 shares
Each of the reporting persons expressly disclaims beneficial
ownership of any shares of Common Stock of HMT Technology
Corporation, except in the case of Summit Ventures IV, L.P.,
for the 4,338,070 shares which it holds of record, in the case
of Summit Subordinated Debt Fund, L.P., for the 582,363 shares
which it holds of record, in the case of Summit Investors II,
L.P., for the 162,437 shares which it holds of record, and in
the case of Summit Ventures III, L.P., for the 4,338,070
shares which it holds of record.
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. The reporting persons expressly disclaim
membership in a "group" as defined in Rule 13d-1(b)(ii)(H).
Item 9. Notice of Dissolution of Group.
Not Applicable.
Page 25 of 42 Pages
<PAGE> 26
Item 10. Certification.
Not Applicable. This statement on Schedule 13G is not filed
pursuant to Rule 13d-1(b).
Page 26 of 42 Pages
<PAGE> 27
SIGNATURES
After reasonable inquiry and to the best of our knowledge and belief, we
certify that the information set forth in this statement is true, complete and
correct. We also hereby agree to file this statement jointly pursuant to the
Agreement listed on Exhibit 1 hereto.
Dated: February 10th, 1998
SUMMIT VENTURES IV, L.P. SUMMIT INVESTORS II, L.P.
By: Summit Partners IV, L.P. By:/s/ John A. Genest
----------------------------
General Partner
By: Stamps, Woodsum & Co. IV
SUMMIT PARTNERS IV, L.P.
By: *
--------------------------
E. Roe Stamps, IV By: Stamps, Woodsum & Co. IV
General Partner
By: *
----------------------
SUMMIT VENTURES III, L.P. E. Roe Stamps, IV
General Partner
By: Summit Partners III, L.P.
SUMMIT PARTNERS III, L.P.
By: Stamps, Woodsum & Co. III
By: Stamps, Woodsum & Co. III
By: *
--------------------------
E. Roe Stamps, IV By: *
General Partner ----------------------
E. Roe Stamps, IV
General Partner
SUMMIT SUBORDINATED DEBT FUND, L.P.
SUMMIT PARTNERS SD, L.P.
By: Summit Partners SD, L.P.
By: Stamps, Woodsum & Co. III
By: Stamps, Woodsum & Co. III
By: *
----------------------
By: * E. Roe Stamps, IV
-------------------------- General Partner
E. Roe Stamps, IV
General Partner
Page 27 of 42 Pages
<PAGE> 28
STAMPS, WOODSUM & CO. IV STAMPS, WOODSUM & CO. III
By: * By: *
------------------------ --------------------------
E. Roe Stamps, IV E. Roe Stamps, IV
General Partner General Partner
* *
- ----------------------------- -----------------------------
E. Roe Stamps, IV Martin J. Mannion
* /s/ John A. Genest
- ----------------------------- -----------------------------
Stephen G. Woodsum John A. Genest
* *
- ----------------------------- -----------------------------
Gregory M. Avis Ernest K. Jacquet
*
- -----------------------------
Joseph F. Trustey *
-----------------------------
Bruce R. Evans
*
-----------------------------
Walter G. Kortschak
*
-----------------------------
Thomas S. Roberts
*
-----------------------------
Joseph F. Trustey
*By:/s/ John A. Genest
-------------------------
John A. Genest,
Attorney-in-fact
- ----------
* Pursuant to Powers of Attorney on file with the Commission, which Powers of
Attorney are incorporated herein by reference. Copies of such Powers of Attorney
are attached hereto as Exhibit 2.
Page 28 of 42 Pages
<PAGE> 29
Exhibit 1
AGREEMENT
Pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934,
the undersigned hereby agree that only one statement containing the information
required by Schedule 13G need be filed with respect to the ownership by each of
the undersigned of shares of Common Stock of HMT Technology Corporation.
This agreement may be executed in any number of counterparts, each of
which shall be deemed an original.
EXECUTED this 10th day of February, 1998.
SUMMIT VENTURES IV, L.P. SUMMIT INVESTORS II, L.P.
By: Summit Partners IV, L.P. By:/s/ John A. Genest
---------------------------
General Partner
By: Stamps, Woodsum & Co. IV
SUMMIT PARTNERS IV, L.P.
By: *
--------------------------
E. Roe Stamps, IV By: Stamps, Woodsum & Co. IV
General Partner
By: *
SUMMIT VENTURES III, L.P. ---------------------
E. Roe Stamps, IV
General Partner
By: Summit Partners III, L.P.
SUMMIT PARTNERS III, L.P.
By: Stamps, Woodsum & Co. III
By : Stamps, Woodsum & Co. III
By: *
--------------------------
E. Roe Stamps, IV By: *
General Partner ---------------------
E. Roe Stamps, IV
General Partner
SUMMIT SUBORDINATED DEBT FUND, L.P.
SUMMIT PARTNERS SD, L.P.
By: Summit Partners SD, L.P.
By: Stamps, Woodsum & Co. III
By: Stamps, Woodsum & Co. III
By: *
By: * ---------------------
-------------------------- E. Roe Stamps, IV
E. Roe Stamps, IV General Partner
General Partner
Page 29 of 42 Pages
<PAGE> 30
STAMPS, WOODSUM & CO. III *
---------------------------
E. Roe Stamps, IV
By: * *
--------------------------- ---------------------------
E. Roe Stamps, IV Stephen G. Woodsum
General Partner
*
Gregory M. Avis
STAMPS, WOODSUM & CO. IV
*
By: * ---------------------------
--------------------------- Martin J. Mannion
E. Roe Stamps, IV
General Partner /s/ John A. Genest
---------------------------
John A. Genest
*
---------------------------
Ernest K. Jacquet
*
---------------------------
Bruce R. Evans
*
---------------------------
Walter G. Kortschak
*
---------------------------
Thomas S. Roberts
*
---------------------------
Joseph F. Trustey
Page 30 of 42 Pages
<PAGE> 31
*By: /s/ John A. Genest
---------------------------
John A. Genest,
Attorney-in-fact
* Pursuant to Powers of Attorney on file with the Commission, which Powers
of Attorney are incorporated herein by reference. Copies of such Powers of
Attorney are attached hereto as Exhibit 2.
Page 31 of 42 Pages
<PAGE> 32
Exhibit 2
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that each person whose signature
appears below hereby constitutes and appoints each and any of E. Roe Stamps, IV,
Stephen G. Woodsum and John A. Genest his true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him and in his
name, place and stead, in any and all capacities (until revoked in writing) to
sign any and all instruments, certificates and documents required to be executed
on behalf of himself individually or on behalf of each or any of Summit
Ventures, L.P., Summit Partners, L.P., Stamps, Woodsum & Co., Summit Partners'
Holdings, L.P., Summit Ventures II, L.P., Summit Partners II, L.P., Stamps,
Woodsum & Co. II, SV Eurofund C.V., SV International, L.P., Stamps, Woodsum
International & Co., Summit Investors, L.P., Summit Investors II, L.P., Summit
Investors III, L.P., Summit Ventures III, L.P., Summit Partners III, L.P.,
Stamps, Woodsum & Co. III, Summit Ventures IV, L.P., Summit Partners IV, L.P.,
Stamps, Woodsum & Co., IV, Summit Subordinated Debt Fund, L.P., Summit Partners
SD, L.P., SW Management Corp., Summit Management Co., Summit Subordinated Debt
Fund II, L.P., and Summit Partners SD II, LLC, pursuant to sections 13 and 16 of
the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and any
and all regulations promulgated thereunder, and to file the same, with all
exhibits thereto, and any other documents in connection therewith, with the
Securities and Exchange Commission, and with any other entity when and if such
is mandated by the Exchange Act or by the By-laws of the National Association of
Securities Dealers, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
fully to all intents and purposes as she might or could do in person thereby
ratifying and confirming all that said attorney-in-fact and agent, or her
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.
Page 32 of 42 Pages
<PAGE> 33
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ E. Roe Stamps, IV
---------------------------------------
E. Roe Stamps, IV
Commonwealth of Massachusetts )
) ss:
County of Suffolk )
On this 10th day of February, 1997, before me personally came E. Roe
Stamps, IV, known to me to be the person described and who executed the
foregoing instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Cynthia R. Freidman
---------------------------------------
Notary Public
My Commission expires: October 20, 2000
Page 33 of 42 Pages
<PAGE> 34
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ Stephen G. Woodsum
---------------------------------------
Stephen G. Woodsum
Commonwealth of Massachusetts )
) ss:
County of Suffolk )
On this 10th day of February, 1997, before me personally came Stephen
G. Woodsum, known to me to be the person described and who executed the
foregoing instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Cynthia R. Freidman
---------------------------------------
Notary Public
My Commission expires: October 20, 2000
Page 34 of 42 Pages
<PAGE> 35
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ Martin J. Mannion
---------------------------------------
Martin J. Mannion
Commonwealth of Massachusetts )
) ss:
County of Suffolk )
On this 10th day of February, 1997, before me personally came Martin J.
Mannion, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Cynthia R. Freidman
---------------------------------------
Notary Public
My Commission expires: October 20, 2000
Page 35 of 42 Pages
<PAGE> 36
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ John A. Genest
---------------------------------------
John A. Genest
Commonwealth of Massachusetts )
) ss:
County of Suffolk )
On this 10th day of February, 1997, before me personally came John A.
Genest, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Cynthia R. Freidman
---------------------------------------
Notary Public
My Commission expires: October 20, 2000
Page 36 of 42 Pages
<PAGE> 37
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ Gregory M. Avis
---------------------------------------
Gregory M. Avis
State of California )
) ss:
County of Santa Clara )
On this 3rd day of February, 1997, before me personally came Stephen G.
Woodsum, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Katherine C. Ely
---------------------------------------
Notary Public
My Commission expires: May 28, 2000
Page 37 of 42 Pages
<PAGE> 38
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ Ernest K. Jacquet
---------------------------------------
Earnest K. Jacquet
Commonwealth of Massachusetts )
) ss:
County of Suffolk )
On this 10th day of February, 1997, before me personally came Earnest
K. Jacquet, known to me to be the person described and who executed the
foregoing instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Cynthia R. Freidman
---------------------------------------
Notary Public
My Commission expires: October 20, 2000
Page 38 of 42 Pages
<PAGE> 39
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ Thomas S. Roberts
---------------------------------------
Thomas S. Roberts
Commonwealth of Massachusetts )
) ss:
County of Suffolk )
On this 10th day of February, 1997, before me personally came Thomas S.
Roberts, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Cynthia R. Freidman
---------------------------------------
Notary Public
My Commission expires: October 20, 2000
Page 39 of 42 Pages
<PAGE> 40
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ Bruce R. Evans
---------------------------------------
Bruce R. Evans
Commonwealth of Massachusetts )
) ss:
County of Suffolk )
On this 10th day of February, 1997, before me personally came Bruce R.
Evans, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Cynthia R. Freidman
---------------------------------------
Notary Public
My Commission expires: October 20, 2000
Page 40 of 42 Pages
<PAGE> 41
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ Walter G. Kortschak
---------------------------------------
Walter G. Kortschak
State of California )
) ss:
County of Santa Clara )
On this 3rd day of February, 1997, before me personally came Walter G.
Kortschak, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Katherine C. Ely
---------------------------------------
Notary Public
My Commission expires: May 28, 2000
Page 41 of 42 Pages
<PAGE> 42
IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
10th day of February, 1997.
/s/ Joseph F. Trustey
---------------------------------------
Joseph F. Trustey
Commonwealth of Massachusetts )
) ss:
County of Suffolk )
On this 10th day of February, 1997, before me personally came Joseph F.
Trustey, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.
[Notary Seal]
/s/ Cynthia R. Freidman
---------------------------------------
Notary Public
My Commission expires: October 20, 2000
Page 42 of 42 Pages
