UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D. C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No.1)
Primus Guaranty, LTD
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(Name of Issuer)
Common Stock
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(Title of Class of Securities)
G72457107
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(CUSIP Number)
July 31, 2007
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(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)
* The remainder of this cover page shall be filled out for a reporting
person'sinitial 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 5 PAGES
1. Name of Reporting Person S.S. or I.R.S. Identification No. of Above Person
Century Capital Management LLC
I.R.S. No. 65-1214946
2. Check the Appropriate Box if a Member of a Group*
(a) [ ]
(b) [ ]
3. SEC USE ONLY
4. Citizenship or Place of Organization: Delaware
5. Sole Voting Power
4,429,311
6. Shared Voting Power
None
7. Sole Dispositive Power
4,429,311
8. Shared Dispositive Power
None
9. Aggregate Amount Beneficially Owned by Each Reporting Person
4,429,311
10. Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares* N/A
11. Percent of Class Represented by Amount in Row 9 10.22%
12. Type or Reporting Person IA
CONTINUED ON NEXT PAGE
*SEE INSTRUCTIONS BEFORE FILLING OUT!
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ITEM 1. (a) Name of Issuer: Primus Guaranty, LTD
(b) Address of Issuer's Principal Executive Offices
Clarendon House, 2 Church Street, Hamilton, HMII, Bermuda
ITEM 2. (a) Name of Person Filing
Century Capital Management LLC
(b) Address of Principal Business Office or, if none, Residence
100 Federal Street, Boston, MA 02110
(c) Citizenship: Delaware
(d) Title of Class of Securities: Common Stock
(e) CUSIP Number: G72457107
ITEM 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b),
check whether the person filing is a:
(a) [ ] Broker or Dealer registered under Section 15 of 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) [X] Investment Adviser registered under section 203 of
Investment Advisors 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
Sec. 240.13d-1(b) (1) (ii) (F)
(g) [ ] Parent Holding Company, in accordance with
Sec. 240.13d-1 (b) (ii) (G) (Note: See Item 7)
(h) [ ] Group, in accordance with Sec. 240.13d-1 (b) (1) (ii) (H)
PAGE 3 OF 5 PAGES
Item 4. Ownership
If the percent of class owned, as of December 31of the year covered by the
statement, or as of the last day of any month described in Rule 13d-1 (b) (2),
if applicable, exceeds five percent, provide the following information as of
that date and identify those shares which there is a right to acquire.
(a) Amount Beneficially Owned 4,429,311
(b) Percent of Class 10.22%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote
4,429,311
(ii) shared power to vote or to direct the vote
None
(iii) sole power to dispose or to direct the disposition of
4,429,311
(iv) shared power to dispose or to direct the disposition of
None
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 [ ].
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 employee benefit plan, pension fund or endowment fund is not required.
Century Capital Management LLC ("Century") is a registered
investment adviser. The shares to which this Schedule relates are
owned by various accounts managed by Century. Those accounts have
the right to receive, or the power to direct the receipt of,
dividends from, and the proceeds from the sale of, such shares.
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 indicated under Item 3 (g) and attach an exhibit stating
theidentity and the Item 3 classification of the relevant subsidiary. If a
parent holding company has filed this schedule pursuant to Rule 13d-1 (c ),
attach an exhibit stating the identification of the relevant subsidiary.
Not Applicable.
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Item 8. Identification and Classification of Members of the Group If a group has
filed this schedule pursuant to Rule 13d-1(b) (ii) (H), so indicate under item 3
(h) 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 Rule 13d-1
(c ) attach an exhibit stating the identity of each member of the group.
Not Applicable.
Item 9. Notice of Dissolution of Group
Notice of dissolution of a group may be furnished as an exhibit stating the date
of dissolution and that all further filings with respect to transactions in the
security reported on will be filed, if required, by members of the group, in
their individual capacity. See Item 5.
Not Applicable.
Item 10. Certification
The following certification shall be included if the statement is filed pursuant
to Rule 13d-1(b):
By signing below I certify that, to the best of my knowledge and belief, the
securities referred to above were acquired in the ordinary course of business
and were not acquired for the purpose of and do not have the effect of changing
or influencing the control of the issuer of such securities and were not
acquired in connection with or as a participant in any transaction having such
purposes or effect.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct
Signature
DATE: August 9, 2007 /s/ Maureen E. Kane
Maureen E. Kane, General Counsel
Name and Title
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