SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Schedule 13G/A
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b), (c)
AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b)
(Amendment No. 1)*
Aerogen, Inc.
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(Name of Issuer)
Common Stock
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(Title of Class of Securities)
007779309
--------------------------------------------------------------------------------
(CUSIP Number)
December 31, 2004
--------------------------------------------------------------------------------
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
[ ] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[X] Rule 13d-1(d)
*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
disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
(Continued on following pages)
Page 1 of 12 Pages
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CUSIP NO. 007779101 13 G Page 2 of 12 Pages
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------------ ---------------------------------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
U.S. Venture Partners IV, L.P. ("USVP IV")
------------ ---------------------------------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ] (b) [X]
------------ ---------------------------------------------------------------------------------------------------------
3 SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
------------ ---------------------------------------------------------------------------------------------------------
NUMBER OF
SHARES 5 SOLE VOTING POWER
BENEFICIALLY 307,959 shares, except that Presidio Management Group IV, L.P.
OWNED BY EACH ("PMG IV"), the general partner of USVP IV, may be deemed to have sole
REPORTING voting power with respect to such shares, and William K Bowes, Jr.
PERSON ("Bowes"), Irwin Federman ("Federman"), Steven M. Krausz ("Krausz")
WITH and Philip M. Young ("Young"), the general partners of PMG IV, may be
deemed to have shared voting power with respect to such shares.
-------- ------------------------------------------------------------------------
6 SHARED VOTING POWER
See response to row 5.
-------- ------------------------------------------------------------------------
7 SOLE DISPOSITIVE POWER
307,959 shares, except that PMG IV, the general partner of USVP IV,
may be deemed to have sole dispositive power with respect to such
shares, and Bowes, Federman, Krausz and Young, the general partners of
PMG IV, may be deemed to have shared dispositive power with respect to
such shares.
-------- ------------------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
------------ ---------------------------------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
REPORTING PERSON 307,959
------------ ---------------------------------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
EXCLUDES CERTAIN SHARES* [ ]
------------ ---------------------------------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
6.3%
------------ ---------------------------------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
------------ ---------------------------------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
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CUSIP NO. 007779101 13 G Page 3 of 12 Pages
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------------ ---------------------------------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Second Ventures II, L.P. ("SV II")
------------ ---------------------------------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ] (b) [X]
------------ ---------------------------------------------------------------------------------------------------------
3 SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Cayman Islands
------------ ---------------------------------------------------------------------------------------------------------
NUMBER OF
SHARES 5 SOLE VOTING POWER
BENEFICIALLY 37,386 shares, except that PMG IV, the general partner of SV II, may
OWNED BY EACH be deemed to have sole voting power with respect to such shares, and
REPORTING Bowes, Federman, Krausz and Young, the general partners of PMG IV, may
PERSON be deemed to have shared voting power with respect to such shares.
WITH -------- ------------------------------------------------------------------------
6 SHARED VOTING POWER
See response to row 5.
-------- ------------------------------------------------------------------------
7 SOLE DISPOSITIVE POWER
37,386 shares, except that PMG IV, the general partner of SV II, may
be deemed to have sole dispositive power with respect to such shares,
and Bowes, Federman, Krausz and Young, the general partners of PMG IV,
may be deemed to have shared dispositive power with respect to such
shares.
-------- ------------------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
------------ ---------------------------------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
REPORTING PERSON 37,386
------------ ---------------------------------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
EXCLUDES CERTAIN SHARES* [ ]
------------ ---------------------------------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.8 %
------------ ---------------------------------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
------------ ---------------------------------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
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CUSIP NO. 007779101 13 G Page 4 of 12 Pages
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------------ ---------------------------------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
USVP Entrepreneur Partners II, L.P. ("UEP II")
------------ ---------------------------------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ] (b) [X]
------------ ---------------------------------------------------------------------------------------------------------
3 SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
------------------------------------ -------- ------------------------------------------------------------------------
NUMBER OF
SHARES 5 SOLE VOTING POWER
BENEFICIALLY 10,684 shares, except that PMG IV, the general partner of UEP II, may
OWNED BY EACH be deemed to have sole voting power with respect to such shares, and
REPORTING Bowes, Federman, Krausz and Young, the general partners of PMG IV, may
PERSON be deemed to have shared voting power with respect to such shares.
WITH -------- ------------------------------------------------------------------------
6 SHARED VOTING POWER
See response to row 5.
-------- ------------------------------------------------------------------------
7 SOLE DISPOSITIVE POWER
10,684 shares, except that PMG IV, the general partner of UEP II, may
be deemed to have sole dispositive power with respect to such shares,
and Bowes, Federman, Krausz and Young, the general partners of PMG IV,
may be deemed to have shared dispositive power with respect to such
shares.
-------- ------------------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
------------------------------------ -------- ------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
REPORTING PERSON 10,684
------------ ---------------------------------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
EXCLUDES CERTAIN SHARES* [ ]
------------ ---------------------------------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.2%
------------ ---------------------------------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
------------ ---------------------------------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
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CUSIP NO. 007779101 13 G Page 5 of 12 Pages
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------------ ---------------------------------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Presidio Management Group IV, L.P. ("PMG IV")
------------ ---------------------------------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ] (b) [X]
------------ ---------------------------------------------------------------------------------------------------------
3 SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
------------ ---------------------------------------------------------------------------------------------------------
NUMBER OF SOLE VOTING POWER
SHARES 5 356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
BENEFICIALLY are directly owned by SV II and 10,684 are directly owned by UEP II.
OWNED BY EACH PMG IV is the general partner of USVP IV, SV II and UEP II, and may be
REPORTING deemed to have sole voting power with respect to such shares, and
PERSON Bowes, Federman, Krausz and Young, the general partners of PMG IV, may
WITH be deemed to have shared voting power with respect to such shares.
-------- ------------------------------------------------------------------------
6 See response to row 5.
-------- ------------------------------------------------------------------------
7 SOLE DISPOSITIVE POWER
356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
are directly owned by SV II and 10,684 are directly owned by UEP II.
PMG IV is the general partner of USVP IV, SV II and UEP II, and may be
deemed to have sole dispositive power with respect to such shares, and
Bowes, Federman, Krausz and Young, the general partners of PMG IV, may
be deemed to have shared dispositive power with respect to such
shares.
-------- ------------------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
------------------------------------ -------- ------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
REPORTING PERSON 356,029
------------ ---------------------------------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
EXCLUDES CERTAIN SHARES* [ ]
------------ ---------------------------------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
7.3%
------------ ---------------------------------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
------------ ---------------------------------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
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CUSIP NO. 007779101 13 G Page 6 of 12 Pages
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------------ ---------------------------------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
William K. Bowes, Jr. ("Bowes")
------------ ---------------------------------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ] (b) [X]
------------ ---------------------------------------------------------------------------------------------------------
3 SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
U.S. Citizen
------------ ---------------------------------------------------------------------------------------------------------
NUMBER OF
SHARES 5 SOLE VOTING POWER
BENEFICIALLY 0 shares.
OWNED BY EACH -------- ------------------------------------------------------------------------
REPORTING
PERSON 6 SHARED VOTING POWER
WITH 356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
are directly owned by SV II and 10,684 are directly owned by UEP II.
Bowes is a general partner of PMG IV, the general partner of USVP IV,
SV II and UEP II, and may be deemed to have shared voting power with
respect to such shares.
-------- ------------------------------------------------------------------------
7 SOLE DISPOSITIVE POWER
0 shares.
-------- ------------------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
are directly owned by SV II and 10,684 are directly owned by UEP II.
Bowes is a general partner of PMG IV, the general partner of USVP IV,
SV II and UEP II, and may be deemed to have shared dispositive power
with respect to such shares.
------------ ---------------------------------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
REPORTING PERSON 356,029
------------ ---------------------------------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
EXCLUDES CERTAIN SHARES* [ ]
------------ ---------------------------------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
7.3%
------------ ---------------------------------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
------------ ---------------------------------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
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CUSIP NO. 007779101 13 G Page 7 of 12 Pages
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------------ ---------------------------------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Irwin Federman ("Federman")
------------ ---------------------------------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ] (b) [X]
------------ ---------------------------------------------------------------------------------------------------------
3 SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
U.S. Citizen
------------ ---------------------------------------------------------------------------------------------------------
NUMBER OF
SHARES 5 SOLE VOTING POWER
BENEFICIALLY 0 shares.
OWNED BY EACH -------- ------------------------------------------------------------------------
REPORTING
PERSON 6 SHARED VOTING POWER
WITH 356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
are directly owned by SV II and 10,684 are directly owned by UEP II.
Federman is a general partner of PMG IV, the general partner of USVP
IV, SV II and UEP II, and may be deemed to have shared voting power
with respect to such shares.
-------- ------------------------------------------------------------------------
7 SOLE DISPOSITIVE POWER
0 shares.
-------- ------------------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
are directly owned by SV II and 10,684 are directly owned by UEP II.
Federman is a general partner of PMG IV, the general partner of USVP
IV, SV II and UEP II, and may be deemed to have shared dispositive
power with respect to such shares.
------------------------------------ -------- ------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
REPORTING PERSON 356,029
------------ ---------------------------------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
EXCLUDES CERTAIN SHARES* [ ]
------------ ---------------------------------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
7.3%
------------ ---------------------------------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
------------ ---------------------------------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
---------------------------------------------------------- --------------------------------------
CUSIP NO. 007779101 13 G Page 8 of 12 Pages
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------------ ---------------------------------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Steven M. Krausz ("Krausz")
------------ ---------------------------------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ] (b) [X]
------------ ---------------------------------------------------------------------------------------------------------
3 SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
U.S. Citizen
------------ ---------------------------------------------------------------------------------------------------------
NUMBER OF
SHARES 5 SOLE VOTING POWER
BENEFICIALLY 0 shares.
OWNED BY EACH -------- ------------------------------------------------------------------------
REPORTING
PERSON 6 SHARED VOTING POWER
WITH 356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
are directly owned by SV II and 10,684 are directly owned by UEP II.
Krausz is a general partner of PMG IV, the general partner of USVP IV,
SV II and UEP II, and may be deemed to have shared voting power with
respect to such shares.
-------- ------------------------------------------------------------------------
7 SOLE DISPOSITIVE POWER
0 shares.
-------- ------------------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
are directly owned by SV II and 10,684 are directly owned by UEP II.
Krausz is a general partner of PMG IV, the general partner of USVP IV,
SV II and UEP II, and may be deemed to have shared dispositive power
with respect to such shares.
------------------------------------ -------- ------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
REPORTING PERSON 356,029
------------ ---------------------------------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
EXCLUDES CERTAIN SHARES* [ ]
------------ ---------------------------------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
7.3%
------------ ---------------------------------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
------------ ---------------------------------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
---------------------------------------------------------- --------------------------------------
CUSIP NO. 007779101 13 G Page 9 of 12 Pages
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------------ ---------------------------------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Philip M. Young ("Young")
------------ ---------------------------------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ] (b) [X]
------------ ---------------------------------------------------------------------------------------------------------
3 SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
U.S. Citizen
------------ ---------------------------------------------------------------------------------------------------------
NUMBER OF
SHARES 5 SOLE VOTING POWER
BENEFICIALLY 15,194 shares.
OWNED BY EACH -------- ------------------------------------------------------------------------
REPORTING
PERSON 6 SHARED VOTING POWER
WITH 356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
are directly owned by SV II and 10,684 are directly owned by UEP II.
Young is a general partner of PMG IV, the general partner of USVP IV,
SV II and UEP II, and may be deemed to have shared voting power with
respect to such shares.
-------- ------------------------------------------------------------------------
7 SOLE DISPOSITIVE POWER
15,194 shares.
-------- ------------------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
356,029 shares, of which 307,959 are directly owned by USVP IV, 37,386
are directly owned by SV II and 10,684 are directly owned by UEP II.
Young is a general partner of PMG IV, the general partner of USVP IV,
SV II and UEP II, and may be deemed to have shared dispositive power
with respect to such shares.
------------------------------------ -------- ------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
REPORTING PERSON 371,223
------------ ---------------------------------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
EXCLUDES CERTAIN SHARES* [ ]
------------ ---------------------------------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
7.6%
------------ ---------------------------------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
------------ ---------------------------------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 10 of 12 Pages
This Amendment No. 1 amends the previous statement on Schedule 13G
filed by U.S. Venture Partners IV, L.P., Second Ventures II, L.P., USVP
Entrepreneur Partners II, L.P., Presidio Management Group IV, L.P., William K.
Bowes, Jr., Irwin Federman, Steven M. Krausz and Philip M. Young. The foregoing
entities and individuals are collectively referred to as the "Reporting
Persons." Only those items as to which there has been a change are included in
this Amendment No. 1.
ITEM 4. OWNERSHIP:
The following information with respect to the ownership of the
Common Stock of the issuer by the persons filing this
Statement is provided as of December 31, 2004:
(a) Amount beneficially owned:
See Row 9 of cover page for each Reporting Person.
(b) Percent of Class:
See Row 11 of cover page for each Reporting Person.
(c) Number of shares as to which such person has:
(i) Sole power to vote or
to direct the vote:
See Row 5 of cover page for each
Reporting Person.
(ii) Shared power to vote or to direct the vote:
See Row 6 of cover page for each
Reporting Person.
(iii) Sole power to dispose
or to direct the disposition of:
See Row 7 of cover page for each
Reporting Person.
(iv) Shared power to dispose or to direct the
disposition of:
See Row 8 of cover page for each
Reporting Person.
Page 11 of 12 Pages
SIGNATURES
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 10, 2005
U.S. Venture Partners IV, L.P. /s/ Michael Maher
By Presidio Management Group IV, L.P. --------------------------------------------------
Its General Partner Signature
Michael Maher
Chief Financial Officer/Attorney-In-Fact
Second Ventures II, L.P. /s/ Michael Maher
By Presidio Management Group IV, L.P. --------------------------------------------------
Its General Partner Signature
Michael Maher
Chief Financial Officer/Attorney-In-Fact
USVP Entrepreneur Partners II, L.P. /s/ Michael Maher
By Presidio Management Group IV, L.P. --------------------------------------------------
Its General Partner Signature
Michael Maher
Chief Financial Officer/Attorney-In-Fact
Presidio Management Group IV, L.P. /s/ Michael Maher
A Delaware Limited Partnership --------------------------------------------------
Signature
Michael Maher
Chief Financial Officer/Attorney-In-Fact
William K. Bowes, Jr. /s/ Michael Maher
--------------------------------------------------
Michael Maher
Attorney-In-Fact
Page 12 of 12 Pages
Irwin Federman /s/ Michael Maher
--------------------------------------------------
Michael Maher
Attorney-In-Fact
Steven M. Krausz /s/ Michael Maher
--------------------------------------------------
Michael Maher
Attorney-In-Fact
Philip M. Young /s/ Michael Maher
--------------------------------------------------
Michael Maher
Attorney-In-Fact