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Insider Trading Arrangements
 3 Months Ended
Mar. 31, 2026
shares
Trading Arrangements, by Individual  
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
Paula C. Maggio [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
On February 27, 2026, Paula C. Maggio, Executive Vice President, General Counsel, and Secretary, adopted a written plan for the sale of MGIC common stock that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. Ms. Maggio’s written plan provides for the sale of 80,937 shares of MGIC common stock in the aggregate. This written plan is scheduled to expire on the earlier of: (1) February 9, 2027; or (2) the date on which an aggregate of 80,937 shares of MGIC common stock have been sold.
Name Paula C. Maggio
Title Executive Vice President, General Counsel, and Secretary
Rule 10b5-1 Arrangement Adopted true
Adoption Date February 27, 2026
Expiration Date February 9, 2027
Arrangement Duration 347 days
Aggregate Available 80,937
Nathaniel C. Colson [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
On February 27, 2026, Nathaniel C. Colson, Executive Vice President, Chief Financial Officer, adopted a written plan for the sale of MGIC common stock that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. Mr. Colson’s written plan provides for the sale of 60,000 shares of MGIC common stock in the aggregate. This written plan is scheduled to expire on the earlier of: (1) December 31, 2026; or (2) the date on which an aggregate of 60,000 shares of MGIC common stock have been sold.
Name Nathaniel C. Colson
Title Executive Vice President, Chief Financial Officer
Rule 10b5-1 Arrangement Adopted true
Adoption Date February 27, 2026
Expiration Date December 31, 2026
Arrangement Duration 307 days
Aggregate Available 60,000
Salvatore A. Miosi [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
On March 2, 2026, Salvatore A. Miosi, President and Chief Operating Officer, adopted a written plan for the sale of MGIC common stock that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. Mr. Miosi’s written plan provides for the sale of up to 305,084 shares of MGIC common stock in the aggregate. This written plan is scheduled to expire on the earlier of: (1) June 30, 2027; or (2) the date on which an aggregate of 305,084 shares of MGIC common stock have been sold.
Name Salvatore A. Miosi
Title President and Chief Operating Officer
Rule 10b5-1 Arrangement Adopted true
Adoption Date March 2, 2026
Expiration Date June 30, 2027
Arrangement Duration 485 days
Aggregate Available 305,084