formsc13g.htm
UNITED
STATES
SECURITIES
AND EXCHANGE COMMISSION
WASHINGTON,
D.C. 20549
SCHEDULE
13G
Under
the Securities Exchange Act of 1934
(Amendment
No.____)*
|
OM
GROUP INC.
|
|
|
(Name
of Issuer)
|
|
|
|
|
|
Common Stock
|
|
|
(Title
of Class of Securities)
|
|
|
|
|
|
670872100
|
|
|
(CUSIP
Number)
|
|
|
|
|
|
May 12, 2008
|
|
|
(Date
of Event Which Requires Filing of this Statement)
|
|
Check the
appropriate box to designate the rule pursuant to which this Schedule is
filed:
* The
remainder of this cover page shall be filled out for the 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).
SCHEDULE
13G
CUSIP
No. 670872100
1.
|
Names
of Reporting Persons
|
|
|
|
|
|
Blenheim
Capital Management, L.L.C.
|
|
|
|
|
2.
|
Check
the Appropriate box if a Member of Group (See
Instructions)
|
|
|
|
|
|
(a) |
|
|
|
|
|
|
|
|
|
(b) |
|
|
3.
|
SEC
Use Only
|
|
|
|
|
4.
|
Citizenship
of Place of Organization:
|
Delaware,
USA
|
|
|
|
5.
|
Sole
Voting Power:
|
1,558,500
|
|
|
|
|
|
|
6.
|
Shared
Voting Power:
|
-0-
|
|
|
|
|
|
|
7.
|
Sole
Dispositive Power:
|
1,558,500
|
|
|
|
|
|
|
8.
|
Shared
Dispositive Power:
|
-0-
|
9.
|
Aggregate
Amount Beneficially Owned by Each Reporting Person:
|
1,558,500
|
|
|
|
|
|
|
10.
|
Check
if the Aggregate Amount in Roe (9) Excludes Certain Shares (See
Instructions):_________________
|
|
|
|
11.
|
Percent
of Class Represented by Amount in Row (9):
|
5.1%
|
|
|
|
12.
|
Type
of Reporting Persons (See Instructions):
|
OO*
|
* The
reporting person is a limited liability company that is a hedge fund manager
which is currently registered as a commodity trading advisor, but which is
exempt from registration as an investment advisor.
Item 1(a). Name Of Issuer:
|
OM
Group Inc. (the “Issuer”)
|
Item 1(b). Address Of Issuer’s Principal
Executive Offices:
127
Public Square, Suite 1500, Key Tower, Cleveland,
Ohio 44114
Item 2(a). Name Of Person
Filing: The names of the person filing this statement on Schedule 13G
are:
|
1.
|
Blenheim
Capital Management, L.L.C.
|
Item 2(b). Address Of Principal
Business Office, Or If None, Residence:
300
Connell Drive, Suite 5200, Berkeley Heights, New Jersey 07922
Item 2(c).
Citizenship: USA (Delaware)
Item 2(d). Title Of Class Of
Securities: Common Stock
Item 2(e). Cusip
Number: 670872100
Item 3. If This Statement Is Filed Pursuant
To Rule 13d-1(B), Or 13d-2(B) Or (C), Check Whether The Person Filing Is
A:
(a)
|
____
|
Broker
or dealer registered under Section 15 of the Exchange
Act.
|
(b)
|
____
|
Bank
as defined in Section 3(a)(6) of the Exchange Act.
|
(c)
|
____
|
Insurance
Company defined in Section 3(a)(19) of the Exchange
Act.
|
(d)
|
____
|
Investment
Company registered under Section 8 of the Investment
|
|
|
Company
Act.
|
(e)
|
____
|
An
Investment adviser in accordance with Rule
13d-1(b)(1)(ii)(E)
|
(f)
|
____
|
An
employee benefit plan or endowment fund in accordance with Rule
13d-1(b)(ii)(F)
|
(g)
|
____
|
A
parent holding company or control person in accordance
Rule
|
|
|
13d-1(b)(1)(ii)(G)
|
(h)
|
____
|
A
savings association as defined in Section 3(b) of the
Federal
|
|
|
Deposit
Insurance Act.
|
(i)
|
____
|
A
church plan that is excluded from the definition of an investment company
under Section 3(c)(14) of the Investment Company Act;
|
(j)
|
____
|
Group,
in accordance with Rule
13d-1(b)(1)(ii)(J)
|
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.
|
(a)
|
Amount
Beneficially owned:
|
|
(c)
|
Number
of Shares as to Which Such Person
Has:
|
|
(i)
|
Sole
power to vote or direct the vote:
|
1,558,500
|
(ii)
|
Shared
power to vote or to direct the
vote:
|
-0-
|
(iii)
|
Sole
power to dispose or to direct the
disposition:
|
1,558,500
|
(iv)
|
Shared
power to dispose or to direct the disposition
of:
|
-0-
Item
5. Ownership of Five Percent or Less of 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: __________.
Item
6. Ownership of More than Five Percent on Behalf of Another Person.
If any
other person is known to have the right to receive or the power to direct the
receipt of dividends from, or the proceeds from the sale of, such securities, a
statement to that effect should be included in response to this item and, if
such interest relates to more than five percent of the class, such person should
be identified. A listing of the shareholders of an investment company registered
under the Investment Company Act of 1940 or the beneficiaries of an employee
benefits plan, pension fund, or endowment fund is not required.
Reporting
Person trades on behalf of certain hedge funds for which investments include the
purchase of the Issuer’s stock. However, no one fund for which the
Reporting Person trades owns more than 5% of the Issuer’s stock.
Item 7. Identification and
Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent
Holding Company
If a
parent holding company has filed this schedule, pursuant to Rule
13d-1(b)(ii)(G), so indicate under Item 3(G) and attach an exhibit stating the
identity and the Item 3 classification of the relevant subsidiary. If a parent
holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule
13d-1(d), attach an exhibit stating the identification of the relevant
subsidiary.
N/A
Item
8. Identification and Classification of Members of the Group
If a
Group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate
under Item 3(j) and attach an exhibit stating the identity and Item 3
classification of each member of the group. If a group has filed this schedule
pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the
identity of each member of the group.
N/A
Item
9. Notice of Dissolution of Group
Notice of
dissolution of a group may be furnished as an exhibit stating the date of the
dissolution and that all further filings with respect to transactions in the
security reported will be filed, if required, by members of the group, in their
individual capacity. See Item 5.
N/A
Item
10. Certification.
By signing below, I certify that, to
the best of my knowledge and belief, the securities referred to above 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.
SIGNATURE
After reasonable inquiry and to the
best of my knowledge and belief, the undersigned certifies that the information
in this statement is true, complete and correct.
Dated:
May 13, 2008
BLENHEIM
CAPITAL MANAGEMENT, L.L.C.
|
|
|
|
|
|
|
|
By:
|
/s/
Joseph Esposito |
|
|
|
|
By:
|
Joseph Esposito,
Senior Vice President
|
|