William F. Ziebell

Companies

• Arthur J. Gallagher & Co.VICE PRESIDENT Feb 1, 2017 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• AJArthur J. Gallagher & Co. AJG49,176 shares²$12.7M at $258.04Apr 2, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Mar 31, 2026Shares withheld for tax 51 shares at $215.95 of Arthur J. Gallagher & Co.²
• Mar 31, 2026Exercised options 51 shares at $215.95 of Arthur J. Gallagher & Co.²
• Mar 15, 2026Shares withheld for tax 2,321 shares at $207.93 of Arthur J. Gallagher & Co.³
• Mar 15, 2026Exercised options 6,930 shares of Arthur J. Gallagher & Co.³
• Mar 15, 2026Exercised options 6,930 shares of Arthur J. Gallagher & Co.³
• Mar 15, 2026Granted 6,930 shares of Arthur J. Gallagher & Co.³
• Mar 31, 2025Shares withheld for tax 70 shares at $345.24 of Arthur J. Gallagher & Co.⁴
• Mar 31, 2025Exercised options 70 shares of Arthur J. Gallagher & Co.⁴
• Mar 15, 2025Shares withheld for tax 3,026 shares at $325.24 of Arthur J. Gallagher & Co.⁵
• Mar 15, 2025Exercised options 6,990 shares of Arthur J. Gallagher & Co.⁵
• Mar 15, 2025Exercised options 6,990 shares of Arthur J. Gallagher & Co.⁵
• Mar 15, 2025Granted 6,990 shares of Arthur J. Gallagher & Co.⁵
• Feb 18, 2025Sold 7,049 shares at $324.41 of Arthur J. Gallagher & Co.⁶
• Feb 18, 2025Exercised options 7,049 shares at $79.59 of Arthur J. Gallagher & Co.⁶
• Dec 18, 2024Shares withheld for tax 2,907 shares at $278.49 of Arthur J. Gallagher & Co.⁷
• Dec 18, 2024Exercised options 2,907 shares of Arthur J. Gallagher & Co.⁷
• Jun 3, 2024Gift 395 shares of Arthur J. Gallagher & Co.⁸
• Mar 16, 2024Shares withheld for tax 2,979 shares at $253.17 of Arthur J. Gallagher & Co.⁹
• Mar 16, 2024Exercised options 8,080 shares of Arthur J. Gallagher & Co.⁹
• Mar 16, 2024Exercised options 8,080 shares of Arthur J. Gallagher & Co.⁹
• Mar 16, 2024Granted 8,080 shares of Arthur J. Gallagher & Co.⁹
• Nov 3, 2023Sold 20,067 shares at $241.22 of Arthur J. Gallagher & Co.¹⁰
• Nov 3, 2023Exercised options 5,966 shares at $70.74 of Arthur J. Gallagher & Co.¹⁰
• Nov 3, 2023Exercised options 14,101 shares at $79.59 of Arthur J. Gallagher & Co.¹⁰
• Mar 12, 2023Shares withheld for tax 4,367 shares at $182.76 of Arthur J. Gallagher & Co.¹¹