Guidewire (GWRE) CEO Rosenbaum sells 1,200 shares under 10b5-1 plan

Rhea-AI Filing Summary

Guidewire Software, Inc. Chief Executive Officer Michael George Rosenbaum reported an open-market sale of 1,200 shares of common stock on March 2, 2026 at a price of $143.87 per share. Following this transaction, he directly owns 228,343 shares. The sale was executed automatically under a Rule 10b5-1 trading plan adopted on October 14, 2025.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Rosenbaum Michael George

(Last) (First) (Middle)

C/O GUIDEWIRE SOFTWARE, INC.

970 PARK PL, SUITE 200

(Street)

SAN MATEO CA 94403

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Guidewire Software, Inc. [ GWRE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

4. If Amendment, Date of 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

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	03/02/2026		S(1)		1,200	D	$143.87	228,343	D

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Automatic sale pursuant to a 10b5-1 Trading Plan adopted by the Reporting Person on October 14, 2025.

Remarks:

	By: Winston King, Attorney-in-Fact for Michael George Rosenbaum	03/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider transaction did Guidewire Software (GWRE) report for its CEO?

Guidewire’s CEO Michael George Rosenbaum reported selling 1,200 shares of common stock in an open-market transaction on March 2, 2026 at $143.87 per share, as disclosed in a Form 4 insider trading report filed for Guidewire Software.

How many Guidewire (GWRE) shares did the CEO sell and at what price?

Michael George Rosenbaum sold 1,200 shares of Guidewire Software common stock at $143.87 per share. The transaction was reported as a non-derivative, open-market sale under transaction code “S” in the Form 4 filing for this insider activity.

How many Guidewire (GWRE) shares does the CEO own after this sale?

After the reported sale, CEO Michael George Rosenbaum directly owns 228,343 Guidewire Software common shares. This post-transaction balance reflects his remaining direct holdings as shown in the Form 4, following the 1,200-share open-market sale on March 2, 2026.

Was the Guidewire (GWRE) CEO’s share sale part of a 10b5-1 plan?

Yes. The Form 4 footnote states the 1,200-share sale was an automatic transaction under a Rule 10b5-1 trading plan. The trading plan was adopted by Michael George Rosenbaum on October 14, 2025, providing a pre-arranged framework for selling shares.

What does transaction code “S” mean in the Guidewire (GWRE) Form 4?

In this Form 4, transaction code “S” indicates a sale of common stock in the open market or a private transaction. The CEO’s 1,200-share trade at $143.87 per share is classified as a non-derivative, open-market sale under this code.

Is the Guidewire (GWRE) CEO’s ownership classified as direct or indirect after the sale?

The Form 4 lists the CEO’s post-transaction holdings of 228,343 shares as direct ownership, marked with ownership code “D”. This indicates the shares are held directly in his name rather than through an intermediary entity or indirect ownership structure.