Guidewire Software, Inc. officer John Mullen filed a Form 144 notice on October 26, 2026, disclosing a proposed sale of 1,800 shares of Guidewire common stock with an aggregate market value of $336,942.00.

Key Highlights

  • Proposed sale: John Mullen, an officer of Guidewire Software, Inc., intends to sell 1,800 shares of common stock on or around October 26, 2026.
  • Aggregate market value: The proposed sale is valued at $336,942.00, according to the filing.
  • Source of shares: The 1,800 shares were acquired on September 15, 2026, via a Performance Shares transaction from the issuer.
  • Shares outstanding: The filing lists 81,992,669 shares of common stock outstanding at time of notice.
  • Prior sales in past 3 months: Mullen sold a total of 63,083 shares in four separate transactions between August 19, 2026, and October 20, 2026, generating gross proceeds of $10,068,304.76.
  • Trading plan: The filing indicates reliance on a Rule 10b5-1 plan adopted on January 13, 2026.
  • Broker: Morgan Stanley Smith Barney LLC Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY 10004, is named as the broker.

Guidewire Officer John Mullen Files Proposed Share Sale Notice

According to the Form 144 filed with the U.S. Securities and Exchange Commission on October 26, 2026, John Mullen, an officer of Guidewire Software, Inc. (NYSE:GWRE), disclosed a proposed sale of 1,800 shares of the company's common stock. The filing lists the aggregate market value of the proposed sale at $336,942.00. The shares are to be sold on the NYSE through Morgan Stanley Smith Barney LLC Executive Financial Services.

The filing discloses that the 1,800 shares were acquired on September 15, 2026, through a Performance Shares transaction from the issuer, with a payment date of September 15, 2026. The filing notes that the nature of payment was listed as "Not Applicable." Mullen indicated that the proposed sale is being made pursuant to a Rule 10b5-1 written trading plan adopted on January 13, 2026.

In the three months preceding this notice, the filing reports four prior sales by Mullen: 16,200 shares sold on August 19, 2026, for gross proceeds of $2,997,000.00; 1,800 shares sold on August 25, 2026, for $339,228.00; 39,683 shares sold on September 17, 2026, for $5,733,076.76; and 5,400 shares sold on October 20, 2026, for $999,000.00. Combined, these transactions totaled 63,083 shares and $10,068,304.76 in gross proceeds, as reported in the filing.

What Was Disclosed

John Mullen, an officer at Guidewire Software, Inc., filed a Form 144 notice on October 26, 2026, proposing to sell 1,800 shares of common stock valued at $336,942.00, acquired via a Performance Shares grant, under a Rule 10b5-1 plan adopted January 13, 2026.