Guidewire officer plans $339K stock sale, 1,800 shares

Guidewire Software, Inc. (GWRE) disclosed that officer John Mullen plans to sell 1,800 shares of common stock under Rule 144 through Morgan Stanley Smith Barney, with an approximate aggregate market value of $339,228.00, and the shares listed on NYSE.

Rhea-AI Filing Summary

Guidewire Software, Inc. (GWRE) disclosed that officer John Mullen plans to sell 1,800 shares of common stock under Rule 144 through Morgan Stanley Smith Barney, with an approximate aggregate market value of $339,228.00, and the shares listed on NYSE.

The notice indicates these 1,800 shares are performance shares acquired from the issuer on 09/15/2025. Guidewire common shares outstanding are reported as 83,256,364, a baseline figure, not the amount being sold. Mullen also reports prior sales of common stock during the past three months.

Key Figures

Shares to be sold: 1,800 shares of common stock Aggregate market value of shares to be sold: $339,228.00 Shares outstanding: 83,256,364 shares +4 more

7 metrics

Shares to be sold 1,800 shares of common stock Planned sale by John Mullen under Rule 144

Aggregate market value of shares to be sold $339,228.00 Approximate value of 1,800 shares in planned Rule 144 sale

Shares outstanding 83,256,364 shares Guidewire common shares outstanding as reported in the notice

Prior sale on 08/19/2026 16,200 shares; $2,997,000.00 Common stock sold by John Mullen during the past 3 months

Prior sale on 06/16/2026 4,292 shares; $509,644.96 Common stock sold by John Mullen during the past 3 months

Date performance shares acquired 09/15/2025 Acquisition date of performance shares to be sold

Approximate date of sale 08/25/2026 Planned sale date for the 1,800 shares

Key Terms

Rule 144, Performance Shares, aggregate market value, securities to be sold

4 terms

Rule 144 regulatory

"See the 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.

Performance Shares financial

"Common | 09/15/2025 | 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.

aggregate market value financial

"Common | Morgan Stanley ... | 1800 | 339228.00 | 83256364"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

securities to be sold financial

"Name of Person for Whose Account the Securities are To Be Sold"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What is GWRE insider John Mullen planning to sell under this Rule 144 notice?

John Mullen plans to sell 1,800 shares of Guidewire Software, Inc. common stock. These are reported as performance shares acquired from the issuer on 09/15/2025, to be sold through Morgan Stanley Smith Barney on or about 08/25/2026.

What is the reported market value of the GWRE shares to be sold?

The 1,800 Guidewire Software, Inc. shares that John Mullen plans to sell have an approximate aggregate market value of $339,228.00, based on the values reported in the notice.

How many GWRE shares are reported as outstanding in this notice?

The notice reports that Guidewire Software, Inc. has 83,256,364 common shares outstanding. This figure provides context for the company’s equity base and is not the amount being sold under this Rule 144 notice.

What GWRE stock sales has John Mullen made in the past three months?

John Mullen reports two past sales of Guidewire common stock: 16,200 shares on 08/19/2026 for $2,997,000.00, and 4,292 shares on 06/16/2026 for $509,644.96.

On which exchange are the GWRE shares in this Rule 144 notice listed?

The common shares of Guidewire Software, Inc. referenced in this Rule 144 notice are listed on the NYSE, as indicated in the securities information section.

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

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Available on EDGAR 08/25/2026 - 04:06 PM EDT Accepted by SEC EDGAR 08/25/2026 - 04:06 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	339228.00	83256364	08/25/2026	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	09/15/2025	Performance Shares	ISSUER			1800	09/15/2025	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	08/19/2026	16200	2997000.00
JOHN MULLEN 970 Park Place, Suite 200 San Mateo CA 94403	Common	06/16/2026	4292	509644.96

144: Remarks and Signature

Remarks
Date of Notice	08/25/2026
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)