United States of America
Arthur J. Gallagher & Co. is an organisation in California. It appears on the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register and the Washington State Attorney General breach-notification register with 4 confirmed incidents (5 filings); the most recent notice was filed on July 13, 2021.
Data as of September 6, 2026.
WA AG breach notification: 72,378 Washington residents affected
sourceRequired under RCW 19.255.010. Notice to the Attorney General is required when a breach affects more than 500 Washington residents.
Note: the count is Washington residents only, not a total.
The same incident was filed separately with 2 jurisdictions within a few days of each other (CA and MA) — shown here as one incident.
Required under Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.
Note: no affected-count is published on this register.
Required under M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.
Note: the count is Massachusetts residents only, not a total.
CA AG breach notification: an unknown number of California residents affected
sourceMA AG breach notification: 655 Massachusetts residents affected
source