Results of Operations and Financial Condition On August 10, 2026, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended June 30, 2026 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

Director — Martin J. Cicco: Mr. Martin J. Cicco was appointed to the Board of Directors and subsequently added to the Compensation and Human Capital Committee.

Chief Executive Officer and President — Eli Simon: Eli Simon was promoted to Chief Executive Officer and President of the Company.

Results of Operations and Financial Condition On May 11, 2026, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended March 31, 2026 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

Chairman of the Board, Chief Executive Officer, President — David Simon: The passing of David Simon, the Company’s Chairman of the Board, Chief Executive Officer, and President.

Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of a Registrant. The disclosure required by this Item is included in 1.01 and is incorporated herein by reference.

Entry into a Material Definitive Agreement. Fourth Amended and Restated Revolving Credit Facility On March 5, 2026, Simon Property Group, L.P. (the “Company”) amended and extended its $5.0 billion senior unsecured multi-currency revolving credit facility (the “Credit Facility”). The Credit Facility’s initial borrowing capacity of $5.0 billion may be increased to $6.0 billion during its term. The initial maturity date of the Credit Facility was extended to June 30, 2030. The initial maturity d…

Other Events. On February 5, 2026, Simon Property Group, Inc. (NYSE: SPG) issued a press release announcing that the Company’s Board of Directors authorized a new common stock repurchase program. Under the new program, the Company may purchase up to $2.0 billion of its common stock through February 29, 2028, as market conditions warrant. The shares may be repurchased in the open market or in privately negotiated transactions, at prices that the Company deems appropriate and subject to market…

Director — Mr. Martin J. Cicco: The Board appointed Mr. Martin J. Cicco as a new director, increasing the board size from 13 to 14 members.

Results of Operations and Financial Condition On February 2, 2026, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended December 31, 2025 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

Results of Operations and Financial Condition On November 3, 2025, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended September 30, 2025 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

COO — Eli Simon: The filing discloses the internal promotion of Eli Simon from Executive Vice President to Chief Operating Officer, which is a succession event rather than a departure.

Results of Operations and Financial Condition On August 4, 2025, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended June 30, 2025 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

Results of Operations and Financial Condition On May 12, 2025, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended March 31, 2025 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

Director — Allan B. Hubbard: The filing discloses the planned retirement of a board director, which is a routine governance event and not the departure of a senior executive officer.

Director — Herbert Simon: The retirement of a 90-year-old Chairman Emeritus is an orderly succession event with no indication of conflict or operational impact.

Results of Operations and Financial Condition On February 4, 2025, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended December 31, 2024 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

Results of Operations and Financial Condition On November 1, 2024, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended September 30, 2024 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The disclosure required by this Item is included in 1.01 and is incorporated herein by reference.

Entry into a Material Definitive Agreement. On September 19, 2024, Simon Property Group, L.P. (the “Company”) amended and extended its $3.5 billion senior unsecured multi-currency supplemental revolving credit facility (the “Supplemental Facility”). The Supplemental Facility’s initial borrowing capacity of $3.5 billion may be increased to $4.5 billion during its term. The initial maturity date of the Supplemental Facility was extended to January 31, 2029 from January 31, 2026. The initial mat…

The filing discloses the approval of equity compensation awards (2024 OPI Awards) to senior employees, which is a compensatory arrangement rather than a change in management personnel.

Results of Operations and Financial Condition On August 5, 2024, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended June 30, 2024 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

Director — Eli Simon: The filing discloses the election of a new Class B director, which is a routine board composition change rather than the departure of a senior executive.

Results of Operations and Financial Condition On May 6, 2024, Simon Property Group, Inc. issued a press release containing information on earnings for the quarter ended March 31, 2024 and other matters. A copy of the press release is furnished with this report as Exhibit 99.1 and is incorporated by reference into this report.

Director — Nina P. Jones: The filing discloses the appointment of a new director to the Audit Committee, which is a routine board governance action and not an executive departure.