Guidewire Software officer proposes $337K share sale

The notice also lists four sales by the officer during the past three months.

Rhea-AI Filing Summary

Guidewire Software, Inc. officer John Mullen reported a proposed sale of 1,800 common shares with an aggregate market value of $336,942.00. The shares are identified as performance shares acquired from the issuer on September 15, 2026. The notice lists four earlier sales: 5,400 shares for $999,000.00 on October 20, 2026; 39,683 for $5,733,076.76 on September 17, 2026; 1,800 for $339,228.00 on August 25, 2026; and 16,200 for $2,997,000.00 on August 19, 2026.

Key Figures

Proposed sale: 1,800 common shares Aggregate market value: $336,942.00 Shares outstanding: 81,992,669 shares +4 more

7 metrics

Proposed sale 1,800 common shares John Mullen's proposed sale

Aggregate market value $336,942.00 Proposed sale

Shares outstanding 81,992,669 shares Listed in the notice

Prior sale on October 20, 2026 5,400 shares; $999,000.00 Securities sold during the past three months

Prior sale on September 17, 2026 39,683 shares; $5,733,076.76 Securities sold during the past three months

Prior sale on August 25, 2026 1,800 shares; $339,228.00 Securities sold during the past three months

Prior sale on August 19, 2026 16,200 shares; $2,997,000.00 Securities sold during the past three months

Key Terms

Performance Shares, Rule 144

2 terms

Performance Shares financial

"1,800; 09/15/2026; Performance Shares; ISSUER"

Performance shares are a type of company stock given to executives or employees that only become theirs if the company meets specific goals, like hitting certain profits or growth targets. They motivate leaders to work toward the company’s success, because their additional shares depend on achieving these results.

Rule 144 regulatory

"definition of "person" in paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

FAQ

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How many Guidewire (GWRE) shares were outstanding in John Mullen's notice?

The notice lists 81,992,669 shares outstanding.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/26/2026 - 04:07 PM EDT Accepted by SEC EDGAR 10/26/2026 - 04:07 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001917389
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	GUIDEWIRE SOFTWARE, INC.
SEC File Number	001-35394
Address of Issuer	970 Park Place, Suite 200 San Mateo CALIFORNIA 94403
Phone	(650) 357-9100
Name of Person for Whose Account the Securities are To Be Sold	JOHN MULLEN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1800	336942.00	81992669	10/26/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/15/2026	Performance Shares	ISSUER			1800	09/15/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
JOHN MULLEN 970 Park Place, Suite 200 San Mateo CA 94403	Common	10/20/2026	5400	999000.00
JOHN MULLEN 970 Park Place, Suite 200 San Mateo CA 94403	Common	09/17/2026	39683	5733076.76
JOHN MULLEN 970 Park Place, Suite 200 San Mateo CA 94403	Common	08/25/2026	1800	339228.00
JOHN MULLEN 970 Park Place, Suite 200 San Mateo CA 94403	Common	08/19/2026	16200	2997000.00

144: Remarks and Signature

Remarks
Date of Notice	10/26/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	01/13/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ John Patrick Mullen
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)