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 *
Bay Management Co X, LLC
   2. Issuer Name and Ticker or Trading Symbol
Guidewire Software, Inc. [GWRE] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
490 S. CALIFORNIA AVENUE, SUITE 200		 3. Date of Earliest Transaction (Month/Day/Year)
10/09/2012
(Street)

PALO ALTO, CA 94306		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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 10/09/2012   J(3)   947,500 D $ 0 4,772,148 I (1) See footnote 1.
Common Stock 10/09/2012   J(3)   52,500 D $ 0 264,139 I (2) See footnote 2.
Common Stock 10/09/2012   J(4)   924 A $ 0 2,310 D (5)  

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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
Bay Management Co X, LLC
490 S. CALIFORNIA AVENUE
SUITE 200
PALO ALTO, CA 94306		     X    
BAY PARTNERS X LP
490 S. CALIFORNIA AVENUE SUITE 200
PALO ALTO, CA 94306		     X    
BAY PARTNERS X ENTREPRENEURS FUND LP
490 S. CALIFORNIA AVENUE SUITE 200
PALO ALTO, CA 94306		     X    
PHILLIPS STUART G
490 S. CALIFORNIA AVENUE SUITE 200
PALO ALTO, CA 94306		     X    

Signatures

 /s/ Stuart Phillips, Managing Member of Reporting Person   10/09/2012
**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) Shares are held directly by Bay Partners X LP ("Bay X"). Bay Management Co X LLC ("Bay Management X"), the general partner of Bay X, and Neal Dempsey and Stuart G. Phillips, the managing members of the Bay Management X, may be deemed to share voting and dispositive power over the shares held by Bay X. Such persons and entities disclaim beneficial ownership of shares held by Bay X except to the extent of any pecuniary interest therein.
(2) Shares are held directly by Bay Partners X Entrepreneurs Fund LP ("Bay X Entrepreneurs"). Bay Management X, the general partner of Bay X Entrepreneurs, and Neal Dempsey and Stuart G. Phillips, the managing members of the Bay Management X, may be deemed to share voting and dispositive power over the shares held by Bay X Entrepreneurs. Such persons and entities disclaim beneficial ownership of shares held by Bay X Entrepreneurs except to the extent of any pecuniary interest therein.
(3) Distributed without additional consideration to partners in pro rata distributions pursuant to the partnership agreement.
(4) Distributed without additional consideration to members in pro rata distributions pursuant to the operating agreement.
(5) Shares received and held directly by Stuart G. Phillips as part of a pro rata distribution, not for additional consideration, by Bay Management Co X LLC to its members.
 
Remarks:
Bay Management Co. X LLC, the Designated Filer, serves as the general partner to Bay Partners X LP and Bay Partners X Entrepreneurs Fund LP. Neal Dempsey and Stuart G. Phillips, are the managing members of the Bay Management Co. X LLC.  Each Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of any securities (except to the extent of such Reporting Person's pecuniary interest in such securities) other than any securities reported herein as being directly owned by such Reporting Person, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of any securities for purposes of Section 16 or for any other purpose.

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