ATKR

SEC source: 0001666138-17-000029 · wf-form4_149394026132041.xml · derivative · entry 9

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,141

Underlying: Common Stock · 15,459 shares

Expires 2024-05-22

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000029 · wf-form4_149394026132041.xml · derivative · entry 8

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,804

Underlying: Common Stock · 22,893 shares

Expires 2023-10-21

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000029 · wf-form4_149394026132041.xml · nonDerivative · entry 6

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,643

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F3 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $26.02 to $26.22 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000029 · wf-form4_149394026132041.xml · nonDerivative · entry 5

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,476

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: 0001666138-17-000029 · wf-form4_149394026132041.xml · nonDerivative · entry 4

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,015

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F3 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $26.02 to $26.22 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000029 · wf-form4_149394026132041.xml · nonDerivative · entry 3

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,595

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: 0001666138-17-000029 · wf-form4_149394026132041.xml · derivative · entry 7

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,697

Underlying: Common Stock · 36,438 shares

Expires 2023-10-21

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000029 · wf-form4_149394026132041.xml · nonDerivative · entry 2

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,017

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F2 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $25.81 to $26.24 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000029 · wf-form4_149394026132041.xml · nonDerivative · entry 1

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,138

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: 0001666138-17-000023 · wf-form4_149393390953316.xml · derivative · entry 3

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 14,781 shares

Expires 2022-07-30

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000023 · wf-form4_149393390953316.xml · nonDerivative · entry 2

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,988

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F2 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $25.83 to $26.24 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000023 · wf-form4_149393390953316.xml · nonDerivative · entry 1

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,134

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: 0001666138-17-000021 · wf-form4_149384611987330.xml · derivative · entry 6

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,135

Underlying: Common Stock · 32,011 shares

Expires 2023-10-21

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000021 · wf-form4_149384611987330.xml · nonDerivative · entry 4

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,700

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F3 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $25.69 to $26.04 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000021 · wf-form4_149384611987330.xml · nonDerivative · entry 3

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,711

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: 0001666138-17-000020 · wf-form4_149384610234018.xml · derivative · entry 6

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 478,000

Underlying: Common Stock · 7,389 shares

Expires 2021-06-10

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000020 · wf-form4_149384610234018.xml · nonDerivative · entry 4

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 165,555

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F3 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $25.65 to $26.04 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000020 · wf-form4_149384610234018.xml · nonDerivative · entry 3

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 172,944

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: 0001666138-17-000019 · wf-form4_149384607425106.xml · derivative · entry 6

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,781

Underlying: Common Stock · 31,383 shares

Expires 2022-07-30

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000019 · wf-form4_149384607425106.xml · nonDerivative · entry 4

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,353

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F3 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $25.68 to $26.04 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000019 · wf-form4_149384607425106.xml · nonDerivative · entry 3

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,175

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: 0001666138-17-000030 · wf-form4_149394027896090.xml · nonDerivative · entry 1

VanArsdale William · CIK 0001674326 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,965

F1 · security: Reflects the award of restricted stock units ("RSUs"), to which Director became eligible on March 7, 2017, but which was issued on May 2, 2017. These RSUs are scheduled to vest based on continued service as a Director on the earlier of (a) the day immediately preceding the first anniversary of the grant date and (b) the day immediately preceding the Atkore International Group Inc. annual meeting of stockholders next following the grant date.

SEC source: 0001666138-17-000033 · wf-form4_149394033451643.xml · nonDerivative · entry 1

Isbell Jeri L · CIK 0001218799 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,965

F1 · security: Reflects the award of restricted stock units ("RSUs"), to which Director became eligible on March 7, 2017, but which was issued on May 2, 2017. These RSUs are scheduled to vest based on continued service as a Director on the earlier of (a) the day immediately preceding the first anniversary of the grant date and (b) the day immediately preceding the Atkore International Group Inc. annual meeting of stockholders next following the grant date.

SEC source: 0001666138-17-000032 · wf-form4_149394031658505.xml · nonDerivative · entry 1

Zeffiro A Mark · CIK 0001446066 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,313

F1 · security: Reflects the award of restricted stock units ("RSUs"), to which Director became eligible on March 7, 2017, but which was issued on May 2, 2017. These RSUs are scheduled to vest based on continued service as a Director on the earlier of (a) the day immediately preceding the first anniversary of the grant date and (b) the day immediately preceding the Atkore International Group Inc. annual meeting of stockholders next following the grant date.

SEC source: 0001666138-17-000031 · wf-form4_149394029935239.xml · nonDerivative · entry 1

MUSE SCOTT H · CIK 0001224118 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,965

F1 · security: Reflects the award of restricted stock units ("RSUs"), to which Director became eligible on March 7, 2017, but which was issued on May 2, 2017. These RSUs are scheduled to vest based on continued service as a Director on the earlier of (a) the day immediately preceding the first anniversary of the grant date and (b) the day immediately preceding the Atkore International Group Inc. annual meeting of stockholders next following the grant date.

SEC source: 0001666138-17-000021 · wf-form4_149384611987330.xml · derivative · entry 5

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 161,146

Underlying: Common Stock · 16,954 shares

Expires 2023-10-21

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000021 · wf-form4_149384611987330.xml · nonDerivative · entry 2

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,700

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F2 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $26.01 to $26.47 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000021 · wf-form4_149384611987330.xml · nonDerivative · entry 1

Lariviere Peter J · CIK 0001674832 · VP and Pres., Cable Solutions

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,654

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: 0001666138-17-000020 · wf-form4_149384610234018.xml · derivative · entry 5

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 485,389

Underlying: Common Stock · 15,033 shares

Expires 2021-06-10

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000020 · wf-form4_149384610234018.xml · nonDerivative · entry 2

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 165,555

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F2 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $26.02 to $26.44 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000020 · wf-form4_149384610234018.xml · nonDerivative · entry 1

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 180,588

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: 0001666138-17-000019 · wf-form4_149384607425106.xml · derivative · entry 5

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,164

Underlying: Common Stock · 18,025 shares

Expires 2022-07-30

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: These options are fully vested and exercisable.

SEC source: 0001666138-17-000019 · wf-form4_149384607425106.xml · nonDerivative · entry 2

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,792

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F2 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $26.01 to $26.48 per Share. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001666138-17-000019 · wf-form4_149384607425106.xml · nonDerivative · entry 1

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 76,350

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: 0001209191-17-029011 · doc4.xml · derivative · entry 6

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 500,422

Underlying: Common Stock · 33,478 shares

Expires 2021-06-10

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: These options are fully vested and exercisable.

SEC source: 0001209191-17-029011 · doc4.xml · nonDerivative · entry 4

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 165,555

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F3 · price: This price represents the approximate weighted average price per Share of the Issuer of sales that were executed at prices ranging from $26.03 to $26.37 per Share. the Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001209191-17-029011 · doc4.xml · nonDerivative · entry 3

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 199,033

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: 0001209191-17-029010 · doc4.xml · derivative · entry 6

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,189

Underlying: Common Stock · 41,591 shares

Expires 2022-07-30

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: These options are fully vested and exercisable.

SEC source: 0001209191-17-029010 · doc4.xml · nonDerivative · entry 4

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,325

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F3 · price: This price represents the approximate weighted average price per Share of the Issuer of sales that were executed at prices ranging from $26.03 to $26.36 per Share. the Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001209191-17-029010 · doc4.xml · nonDerivative · entry 3

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,900

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: 0001209191-17-029009 · doc4.xml · derivative · entry 3

Fitzpatrick Kevin P · CIK 0001454306 · VP, Global Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,685

Underlying: Common Stock · 31,615 shares

Expires 2022-04-11

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: These options are fully vested and exercisable.

SEC source: 0001209191-17-029009 · doc4.xml · nonDerivative · entry 2

Fitzpatrick Kevin P · CIK 0001454306 · VP, Global Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,850

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F2 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $26.03 to $26.29 per Share. the Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001209191-17-029009 · doc4.xml · nonDerivative · entry 1

Fitzpatrick Kevin P · CIK 0001454306 · VP, Global Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 76,212

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: 0001209191-17-029011 · doc4.xml · derivative · entry 5

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 533,900

Underlying: Common Stock · 14,100 shares

Expires 2021-06-10

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: These options are fully vested and exercisable.

SEC source: 0001209191-17-029011 · doc4.xml · nonDerivative · entry 2

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 165,555

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F2 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $26.04 to $26.40 per Share. the Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001209191-17-029011 · doc4.xml · nonDerivative · entry 1

Williamson John Patrick · CIK 0001674890 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 179,655

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: 0001209191-17-029010 · doc4.xml · derivative · entry 5

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,780

Underlying: Common Stock · 17,520 shares

Expires 2022-07-30

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: These options are fully vested and exercisable.

SEC source: 0001209191-17-029010 · doc4.xml · nonDerivative · entry 2

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,309

F1 · kind: This exercise and sale were undertaken pursuant to a predetermined diversification plan previously adopted by the Reporting Person (a "10b5-1 Plan").

F2 · price: This price represents the approximate weighted average price per share of common stock (each a "Share") of Atkore International Group Inc. (the "Issuer") of sales that were executed at prices ranging from $26.03 to $26.49 per Share. the Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the issuer, full information regarding the number of Shares sold at each price.

SEC source: 0001209191-17-029010 · doc4.xml · nonDerivative · entry 1

MALLAK JAMES A · CIK 0001276299 · Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,448

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: 0001209191-17-013812 · doc4.xml · nonDerivative · entry 1

CD&R Allied Holdings, L.P. · CIK 0001674087 · 10% owner

CD&R Associates VIII, Ltd. · CIK 0001474786 · 10% owner

CD&R ASSOCIATES VIII, LP · CIK 0001474716 · 10% owner

CD&R Investment Associates VIII, Ltd. · CIK 0001474785 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By affiliate

Disclosed balance after: 30,460,377

F1 · ownership.nature: Following the transaction reported herein, CD&R Allied Holdings, L.P. ("CD&R Holdings") directly owns 30,460,377 shares of Common Stock. CD&R Associates VIII, Ltd., as the general partner of CD&R Holdings, CD&R Associates VIII, L.P., as the sole stockholder of CD&R Associates VIII, Ltd., and CD&R Investment Associates VIII, Ltd., as the general partner of CD&R Associates VIII, L.P., may each be deemed to beneficially own the shares of Common Stock held by CD&R Holdings.

F2 · ownership.nature: Each of CD&R Associates VIII, Ltd., CD&R Associates VIII, L.P. and CD&R Investment Associates VIII, Ltd. expressly disclaims beneficial ownership of the shares of Common Stock held by CD&R Holdings, except to the extent of its pecuniary interest therein.