Guidewire CEO sells 1,200 shares under 10b5-1 plan

Guidewire Software, Inc. Chief Executive Officer Michael George Rosenbaum sold 1,200 shares of common stock in an open-market transaction at $166.34 per share on March 9, 2026.

Rhea-AI Filing Summary

Guidewire Software, Inc. Chief Executive Officer Michael George Rosenbaum sold 1,200 shares of common stock in an open-market transaction at $166.34 per share on March 9, 2026. The sale was executed automatically under a Rule 10b5-1 trading plan adopted on October 14, 2025.

After this transaction, Rosenbaum directly holds 227,143 shares of Guidewire common stock.

Insider Trade Summary

Net Seller: 1,200 shares

Net Sell 1 txn

Insider Rosenbaum Michael George

Role Chief Executive Officer

Sold 1,200 shs ($200K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,200	$166.34	$200K

Holdings After Transaction: Common Stock — 227,143 shares (Direct)

Footnotes (1)

1. F1. Automatic sale pursuant to a 10b5-1 Trading Plan adopted by the Reporting Person on October 14, 2025.

FAQ

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

Guidewire reported that CEO Michael George Rosenbaum sold 1,200 shares of common stock in an open-market transaction. The sale occurred on March 9, 2026, and involved shares held directly in his name under a pre-established Rule 10b5-1 trading plan.

At what price did the Guidewire (GWRE) CEO sell his shares?

The CEO’s sale was executed at an average price of $166.34 per share. This price applies to the 1,200 common shares sold in the open market on March 9, 2026, as reported in the Form 4 insider trading disclosure.

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

After the reported sale, CEO Michael George Rosenbaum directly owns 227,143 shares of Guidewire common stock. This post-transaction holding reflects his remaining direct ownership following the 1,200-share open-market sale disclosed in the Form 4.

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

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

What type of transaction code appears in the Guidewire (GWRE) Form 4?

The Form 4 lists transaction code “S,” indicating a sale in an open market or private transaction. In this case, it reflects an open-market disposal of 1,200 shares of Guidewire common stock by the company’s Chief Executive Officer.

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Accepted by SEC EDGAR 03/09/2026 - 08:59 PM Learn about SEC filing dates

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
Estimated average burden
hours per response:			0.5

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)
03/09/2026

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	03/09/2026		S(1)		1,200	D	$166.34	227,143	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	03/09/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.