UNITED STATES
SECURITIES AND EXCHANGE
COMMISSION
Washington,
D.C. 20549
SCHEDULE
13G
Under
the Securities Exchange Act of 1934
Rubicon
Technology Inc.
(Name of
Issuer)
Common
(Title of
Class of Securities)
78112T107
(CUSIP
Number)
May 6th, 2009
(Date of
Event Which Requires Filing of this Statement)
Check the
appropriate box to designate the rule pursuant to which this Schedule is
filed:
o Rule
13d-1(b)
x Rule
13d-1(c)
¨ 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 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).
1
CUSIPNO.
78112T107
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1
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NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE
PERSONS (ENTITIES ONLY)
SAM Sustainable Asset Management AG
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2
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CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INTRUCTIONS)
(a) o
(b)
¨
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3
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SEC
USE ONLY
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4
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CITIZENSHIP
OR PLACE OF ORGANIZATION
Switzerland
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NUMBER
OF
SHARES
BENEFICIALLY
OWNED
BY EACH REPORTING PERSON WITH:
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5
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SOLE
VOTING POWER
1,000,000
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|
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6
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SHARED
VOTING POWER
0
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7
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SOLE
DISPOSITIVE POWER
1,000,000
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8
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SHARED
DISPOSITIVE POWER
0
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9
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AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
4.99%
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10
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CHECK
BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES (SEE INSTRUCTIONS)
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11
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PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
4.99%
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12
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TYPE
OF REPORTING PERSON (SEE INSTRUCTIONS)
00
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2
| Item 1. | (a) |
Name of Issuer:
Rubicon
Technology
|
| (b) | Address of Issuer's Principal Executive Offices: | |
|
9931
Franklin Avenue
Franklin
Park, IL 60131
USA
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| Item 2. | (a) |
Names of Persons
Filing: SAM Sustainable Asset Management AG
|
| (b) |
Address
of Principal Business Office or. if None. Residence:
Josefstrasse
218, 8005 Zurich
|
|
| (c) |
Citizenship:
Switzerland
|
|
| (d) |
Title
of Class of Securities:
COMMON
|
|
| (e) |
CUSIP Number:
78112T107
|
| Item 3. |
If
this statement is filed pursuant to §§240.13d-l(b) or 240.13d-2(b) or
(c\
check
whether the person filing is a:
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||
| (a) | o |
Broker or
dealer registered under section 15 of the Act (15 U.S.C. 78o).
|
|
| (b) | o |
Bank as
defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
|
|
| (c) | o |
Insurance
company as defined in section 3(a)(19) of the Act (15 U.S.C.
78c).
|
|
| (d) | o |
Investment company
registered under section 8 of the Investment Company Act of 1940 (15
U.S.C. 80a-8).
|
|
| (e) | o |
An investment adviser in accordance with §240.13d-l
(b)(l )(ii)(E).
|
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| (f) | o |
An
employee benefit plan or endowment fund in accordance with
§240.13d-l(b)(l)(ii)(F).
|
|
| (g) | o |
A parent
holding company or control person in accordance with
§240.13d-l(b)(l)(ii)(G).
|
|
| (h) | o |
A savings
association as defined in section 3(b) of the Federal Deposit Insurance
Act (12 U.S.C. 1813).
|
|
| (i) | o |
A church
plan that is excluded from the definition of an investment company under
section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C.
80a-3).
|
|
| (j) | o |
Group, in
accordance with §240.13d-l(b)(l)(ii)(J).
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| If this statement is filed pursuant to Rule 13d-l(c) check this box: x | |||
3
| Item 4 |
Ownership.
Provide
the following information regarding the aggregate number and percentage of
the class of securities of the Issuer identified in Item
1.
|
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| (a) |
Amount
beneficially owned 1'000'000 common
shares
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| (b) |
Percent
of class: 4.99 %
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| (c) |
Number of
shares as to which the person has:
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(i)
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Sole
power to vote or to direct the vote: 1'000'000
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| (ii) |
Shared power to vote or to direct the vote: 0
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| (iii) |
Sole
power to dispose or to direct the disposition of: 1'000'000
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| (iv) |
Shared
power to dispose or to direct the disposition of: 0
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| Instruction. For computations regarding securities which represent a right to acquire an underlying security see §240.13d-3(d)( 1). | |||
| Item 5 |
Ownership of Five
Percent or Less of a Class.
If
this statement is being filed to report the fact that as of the date
hereof the reporting person has ceased to be the beneficial owner of more
than five percent of the class of securities, check the following x.
Instruction:
Dissolution of a group requires a response to this
item.
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| Item 6. |
Ownership
of More than Five Percent on Behalf of Another
Person.
SAM Sustainable Asset Management AG is filing this
Schedule 13G in its capacity as investment adviser with discretionary
authority with respect to various advisory clients. No individual advisory
client is known to have beneficial ownership of 5% of the outstanding
shares of the issuer.
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| Item 7. |
Identification and
Classification of the Subsidiary Which Acquired the Security Being
Reported
on By the Parent Holding Company or Control
Person.
n/a
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| Item 8. |
Identification and Classification of Members of the
Group,
n/a
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4
| Item 9. |
Notice of Dissolution of Group,
n/a
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| Item 10. |
Certification.
By
signing below we certify that, to the best of our knowledge and belief,
the securities referred to above were acquired and are held in the
ordinary course of business and were not acquired and are not held for the
purpose of or with the effect of changing or influencing the control of
the issuer of the securities and were not acquired and are not held in
connection with or as a participant in any transaction having that purpose
or effect.
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SIGNATURE
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.
Dated:
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 |
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| By: | Roman Binder | |
| COO | ||
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