Timothy J. Mattke, Chief Executive Officer of MGIC Investment Corporation ($MTG), sold 137,113 shares of company stock on August 5, 2026, in an open-market transaction valued at $4,184,277. The shares were sold at $30.517 each. The trade was disclosed in a Form 4 filing dated August 6, 2026. After the sale, Mattke held 980,892 shares.
The August transaction marked the fifth open-market sale by Mattke over the trailing twelve months. On August 7, 2025, he sold 139,203 shares for $3,693,988 at $26.54 per share. On October 7, 2025, he sold another 139,203 shares at $27.09 per share, yielding $3,771,677. A series of six trades executed on January 13, 2026, again totaled 139,203 shares and produced $3,689,849 in combined proceeds across prices ranging from $25.89 to $27.80. On April 2, 2026, he sold 139,202 shares at $26.49 per share, generating $3,687,879. Across the five sales, Mattke's total open-market proceeds reached roughly $19 million.
The first four dispositions were notably uniform in size—each involved approximately 139,200 shares. The August 2026 trade was slightly smaller at 137,113 shares, but the higher per-share price of $30.52 resulted in greater dollar proceeds than any of the prior four events.
Other MGIC insiders also sold shares during the same twelve-month window. Salvatore A. Miosi, the company's Chief Operating Officer, executed eight open-market sales totaling approximately $6.14 million. Paula C. Maggio, a Vice President, reported three sales with combined proceeds of roughly $1.63 million. No Form 4 filing for $MTG since the beginning of 2025 has shown an open-market purchase by any corporate insider.
Members of Congress have also traded $MTG, though on a significantly smaller scale. Representative Lisa Mcclain, Republican of Michigan, disclosed both a purchase and a sale of the stock in June 2025, each reported in the $1,001 to $15,000 range under STOCK Act disclosure rules. Representative Michael T. McCaul, Republican of Texas, reported a purchase in August 2023 valued between $100,001 and $250,000. Congressional dollar figures are midpoint estimates of the disclosed bracketed ranges.
During the week ending August 5, $MTG traded between $29.62 and $31.89, closing at $30.59 on the day of Mattke's transaction. The stock's closing price on the sale date was roughly 15 percent above the $26.54 per share at which Mattke sold shares in the first of the five dispositions, one year earlier.