Walter D. Bay

Companies

• Arthur J. Gallagher & Co.General counsel Mar 10, 2011 to now¹
• Arthur J. Gallagher & Co.VICE PRESIDENT, SECRETARY AND Aug 21, 2007 to Feb 14, 2011²

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. AJG71,783 shares³$18.5M at $258.04Aug 26, 2026

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

Recent filings

• Aug 24, 2026Sold 12,000 shares at $270.08 of Arthur J. Gallagher & Co.³
• Mar 31, 2026Shares withheld for tax 627 shares at $215.95 of Arthur J. Gallagher & Co.⁴
• Mar 31, 2026Exercised options 1,415 shares at $215.95 of Arthur J. Gallagher & Co.⁴
• Mar 15, 2026Shares withheld for tax 2,411 shares at $207.93 of Arthur J. Gallagher & Co.⁵
• Mar 15, 2026Exercised options 7,090 shares of Arthur J. Gallagher & Co.⁵
• Mar 15, 2026Exercised options 7,090 shares of Arthur J. Gallagher & Co.⁵
• Mar 15, 2026Granted 7,090 shares of Arthur J. Gallagher & Co.⁵
• Dec 19, 2025Gift 1,724 shares of Arthur J. Gallagher & Co.⁶
• Dec 19, 2025Sold 15,850 shares at $255.00 of Arthur J. Gallagher & Co.⁶
• Dec 19, 2025Exercised options 15,850 shares at $79.59 of Arthur J. Gallagher & Co.⁶
• Mar 31, 2025Shares withheld for tax 79 shares at $345.24 of Arthur J. Gallagher & Co.⁷
• Mar 31, 2025Exercised options 79 shares of Arthur J. Gallagher & Co.⁷
• Mar 15, 2025Shares withheld for tax 3,108 shares at $325.24 of Arthur J. Gallagher & Co.⁸
• Mar 15, 2025Exercised options 7,180 shares of Arthur J. Gallagher & Co.⁸
• Mar 15, 2025Exercised options 7,180 shares of Arthur J. Gallagher & Co.⁸
• Mar 15, 2025Granted 7,180 shares of Arthur J. Gallagher & Co.⁸
• Mar 12, 2025Shares withheld for tax 945 shares at $325.75 of Arthur J. Gallagher & Co.⁹
• Mar 12, 2025Exercised options 2,250 shares of Arthur J. Gallagher & Co.⁹
• Mar 12, 2025Exercised options 2,250 shares of Arthur J. Gallagher & Co.⁹
• Feb 13, 2025Sold 10,000 shares at $326.62 of Arthur J. Gallagher & Co.¹⁰
• Feb 5, 2025Shares withheld for tax 40,613 shares at $316.30 of Arthur J. Gallagher & Co.¹¹
• Feb 5, 2025Exercised options 94,732 shares of Arthur J. Gallagher & Co.¹¹
• Jul 30, 2024Sold 6,335 shares at $284.06 of Arthur J. Gallagher & Co.¹²
• Jun 18, 2024Sold 8,303 shares at $262.74 of Arthur J. Gallagher & Co.¹³
• May 20, 2024Sold 800 shares at $257.24 of Arthur J. Gallagher & Co.¹⁴