Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Sills Stephen Jay
  2. Issuer Name and Ticker or Trading Symbol
Darwin Professional Underwriters Inc [DR]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President and CEO
(Last)
(First)
(Middle)
9 FARM SPRINGS ROAD
3. Date of Earliest Transaction (Month/Day/Year)
06/06/2007
(Street)

FARMINGTON, CT 06032
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 06/06/2007 06/06/2007 J(1) V 21,175 A $ 0 (1) 687,078 D  
Common Stock 06/06/2007 06/06/2007 J(1) V 21,175 D $ 0 (1) 41,325 (2) I By Trust (3)
Common Stock               1,000 I By Child (4)
Common Stock               900 I By Child (4)
Common Stock               900 I By reporting person as UTMA custodian (4)
Common Stock               1,050 I By child (4)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Sills Stephen Jay
9 FARM SPRINGS ROAD
FARMINGTON, CT 06032
  X     President and CEO  

Signatures

 Timothy J. Curry, under power of attorney for reporting person   06/08/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Represents a change in form of beneficial ownership from indirect to direct, through a transfer of shares out of a grantor annuity trust ("GRAT"), of which the reporting person is the sole beneficiary, to the reporting person's direct ownership holdings.
(2) NOTE: the reporting person's prior Form 4, dated February 27, 2007, contained a typographical error and showed the GRAT's holding as 65,200 shares instead of the correct holding, 62,500 shares. The amount shown in column 5 above represents the correct prior holding, 62,500 shares, less the transfer reported herein, 21,175 shares, for the current holding of 41,325 shares.
(3) Held by a grantor annuity trust of which the reporting person is the sole trustee and beneficiary.
(4) Reporting person disclaims beneficial ownership of these shares.

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