AJG

SEC source: 0001127602-23-010184 · form4.xml · nonDerivative · entry 7

HOWELL DOUGLAS K · CIK 0001222374 · VP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,565.062

SEC source: 0001127602-23-010184 · form4.xml · nonDerivative · entry 6

HOWELL DOUGLAS K · CIK 0001222374 · VP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 96,683.062

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-010184 · form4.xml · nonDerivative · entry 5

HOWELL DOUGLAS K · CIK 0001222374 · VP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,925

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-010184 · form4.xml · nonDerivative · entry 4

HOWELL DOUGLAS K · CIK 0001222374 · VP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,485

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-010184 · form4.xml · nonDerivative · entry 3

HOWELL DOUGLAS K · CIK 0001222374 · VP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,045

F2 · shares: Performance share units (awarded on March 12, 2020) earned and vested as of March 12, 2023.

SEC source: 0001127602-23-010182 · form4.xml · nonDerivative · entry 10

GALLAGHER J PATRICK JR · CIK 0001186006 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,926.4435

SEC source: 0001127602-23-010182 · form4.xml · nonDerivative · entry 9

GALLAGHER J PATRICK JR · CIK 0001186006 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 135,559.4435

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-010182 · form4.xml · nonDerivative · entry 2

GALLAGHER J PATRICK JR · CIK 0001186006 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-010182 · form4.xml · nonDerivative · entry 1

GALLAGHER J PATRICK JR · CIK 0001186006 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,540

F1 · shares: Performance share units (awarded on March 12, 2020) earned and vested as of March 12, 2023.

SEC source: 0001127602-23-010206 · form4.xml · derivative · entry 6

Jain Vishal · CIK 0001812516 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,028.683

Underlying: Common Stock · 3,226.7 shares

Expires not disclosed

F2 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F3 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010202 · form4.xml · derivative · entry 1

Bloom Mark H. · CIK 0001795399 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,610.879

Underlying: Common Stock · 2,016.7 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F2 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F2 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F2 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010204 · form4.xml · derivative · entry 6

Ziebell William F · CIK 0001695709 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,272.156

Underlying: Common Stock · 3,226.7 shares

Expires not disclosed

F2 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F3 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010200 · form4.xml · derivative · entry 8

Cavaness Joel D · CIK 0001665268 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 124,294.951

Underlying: Common Stock · 3,226.7 shares

Expires not disclosed

F2 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F3 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010198 · form4.xml · derivative · entry 6

Mead Christopher E · CIK 0001737644 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,183.621

Underlying: Common Stock · 2,823.3 shares

Expires not disclosed

F2 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F3 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010196 · form4.xml · derivative · entry 1

Gallagher Patrick Murphy · CIK 0001929606 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,453.139

Underlying: Common Stock · 2,420 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F2 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F2 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F2 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010194 · form4.xml · derivative · entry 6

Hudson Scott R · CIK 0001482241 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,614.146

Underlying: Common Stock · 4,033.34 shares

Expires not disclosed

F2 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F3 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010192 · form4.xml · derivative · entry 6

Pietrucha Susan E · CIK 0001386997 · Chief Human Resources Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,932.874

Underlying: Common Stock · 3,630 shares

Expires not disclosed

F2 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F3 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010190 · form4.xml · derivative · entry 6

Bay Walter D. · CIK 0001410235 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,933.074

Underlying: Common Stock · 3,630 shares

Expires not disclosed

F2 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F3 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F3 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010188 · form4.xml · derivative · entry 10

GALLAGHER THOMAS JOSEPH · CIK 0001589933 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,266.444

Underlying: Common Stock · 4,840 shares

Expires not disclosed

F4 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F5 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F5 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F5 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010186 · form4.xml · derivative · entry 1

CARY RICHARD C · CIK 0001185998 · Controller, CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,829.441

Underlying: Common Stock · 806.7 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F2 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F2 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F2 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010184 · form4.xml · derivative · entry 8

HOWELL DOUGLAS K · CIK 0001222374 · VP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 193,540.148

Underlying: Common Stock · 4,840 shares

Expires not disclosed

F3 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F4 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F4 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F4 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-010182 · form4.xml · derivative · entry 11

GALLAGHER J PATRICK JR · CIK 0001186006 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 148,501.732

Underlying: Common Stock · 12,100 shares

Expires not disclosed

F5 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F6 · shares: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F6 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F6 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-009786 · form4.xml · nonDerivative · entry 1

JOHNSON DAVID S · CIK 0001192476 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,508

SEC source: 0001127602-23-009769 · form4.xml · derivative · entry 9

Gallagher Patrick Murphy · CIK 0001929606 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 9,900 shares

Expires 2023-03-17

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: Grant date of 3/17/2016.

F7 · derivative.exercise_date: One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

SEC source: 0001127602-23-009769 · form4.xml · nonDerivative · entry 8

Gallagher Patrick Murphy · CIK 0001929606 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,134.0255

F5 · price: The price reported is an average weighted price. The shares were sold in multiple transactions at prices ranging from $189.32 to $189.35. The reporting person will provide to the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001127602-23-009769 · form4.xml · nonDerivative · entry 7

Gallagher Patrick Murphy · CIK 0001929606 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,185.0255

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-009779 · form4.xml · derivative · entry 5

Cavaness Joel D · CIK 0001665268 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 121,068.251

Underlying: Common Stock · 30,211.171 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F2 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F2 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-009779 · form4.xml · nonDerivative · entry 2

Cavaness Joel D · CIK 0001665268 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 139,410

SEC source: 0001127602-23-009779 · form4.xml · nonDerivative · entry 1

Cavaness Joel D · CIK 0001665268 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,298.171

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-009764 · form4.xml · nonDerivative · entry 2

GALLAGHER J PATRICK JR · CIK 0001186006 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,019.4435

SEC source: 0001127602-23-009515 · form4.xml · derivative · entry 4

Jain Vishal · CIK 0001812516 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 11,300 shares

Expires 2023-03-17

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: Grate date of 3/17/2016.

F2 · derivative.exercise_date: One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

SEC source: 0001127602-23-009515 · form4.xml · nonDerivative · entry 3

Jain Vishal · CIK 0001812516 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,034

SEC source: 0001127602-23-009515 · form4.xml · nonDerivative · entry 2

Jain Vishal · CIK 0001812516 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,964

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-009519 · form4.xml · derivative · entry 4

Hudson Scott R · CIK 0001482241 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 18,700 shares

Expires 2023-03-17

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

SEC source: 0001127602-23-009519 · form4.xml · nonDerivative · entry 3

Hudson Scott R · CIK 0001482241 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,231

F1 · price: The price reported is an average weighted price. The shares were sold in multiple transactions at prices ranging from $190.54 to $190.91. The reporting person will provide to the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001127602-23-009519 · form4.xml · nonDerivative · entry 2

Hudson Scott R · CIK 0001482241 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,931

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-009344 · form4.xml · derivative · entry 8

GALLAGHER THOMAS JOSEPH · CIK 0001589933 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,400 shares

Expires 2023-03-17

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

SEC source: 0001127602-23-009344 · form4.xml · nonDerivative · entry 7

GALLAGHER THOMAS JOSEPH · CIK 0001589933 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 300,911

SEC source: 0001127602-23-009344 · form4.xml · nonDerivative · entry 6

GALLAGHER THOMAS JOSEPH · CIK 0001589933 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 314,756

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-009353 · form4.xml · derivative · entry 5

Cavaness Joel D · CIK 0001665268 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,279.422

Underlying: Common Stock · 4,960.585 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of phantom stock represents a right to receive one share of Gallagher common stock.

F2 · derivative.exercise_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

F2 · derivative.expiration_date: These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.

SEC source: 0001127602-23-009353 · form4.xml · nonDerivative · entry 4

Cavaness Joel D · CIK 0001665268 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 121,087

SEC source: 0001127602-23-009353 · form4.xml · nonDerivative · entry 3

Cavaness Joel D · CIK 0001665268 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126,047.585

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-008946 · form4.xml · derivative · entry 1

Miskel Christopher C. · CIK 0001804681 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 838.237

Underlying: Common Stock · 159.76 shares

Expires not disclosed

F1 · derivative.exercise_price: Each notional stock unit represents a right to receive one share of Gallagher common stock.

F2 · kind: This acquisition resulted from the reporting person's election (pursuant to the Company's Director Deferral Plan) to defer the reporting person's annual cash retainer, which the Company pays on a quarterly basis, into deferred share units that will be distributed in the form of the Company's common stock.

F3 · derivative.exercise_date: The notional stock units become payable in January 2034 in accordance with the reporting person's election.

F3 · derivative.expiration_date: The notional stock units become payable in January 2034 in accordance with the reporting person's election.

SEC source: 0001127602-23-004531 · form4.xml · nonDerivative · entry 1

McCurdy Kay W · CIK 0001342075 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,091

SEC source: 0001127602-23-004147 · form4.xml · derivative · entry 9

GALLAGHER J PATRICK JR · CIK 0001186006 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 62,900 shares

Expires 2023-03-17

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

SEC source: 0001127602-23-004147 · form4.xml · nonDerivative · entry 2

GALLAGHER J PATRICK JR · CIK 0001186006 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,909.4435

SEC source: 0001127602-23-004147 · form4.xml · nonDerivative · entry 1

GALLAGHER J PATRICK JR · CIK 0001186006 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 82,809.4435

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-004559 · form5.xml · nonDerivative · entry 1

Bay Walter D. · CIK 0001410235 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,194

SEC source: 0001127602-23-005023 · form5.xml · nonDerivative · entry 1

GALLAGHER THOMAS JOSEPH · CIK 0001589933 · VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 289,356

SEC source: 0001127602-22-026940 · form4.xml · nonDerivative · entry 3

McCurdy Kay W · CIK 0001342075 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,273