SLP

SEC source: 0001683168-21-004009 · ownership.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,430,831

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4) and (5) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F3 · price: These shares were sold in multiple transactions at prices ranging from $43.82 to $44.74, inclusive.

SEC source: 0001683168-21-003569 · ownership.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,436,483

F1 · price: Stock granted as director compensation, issued under the issuer's 2021 Equity Incentive Plan.

SEC source: 0001683168-21-003565 · ownership.xml · nonDerivative · entry 1

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 869

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2021 Equity Incentive Plan.

SEC source: 0001683168-21-003567 · ownership.xml · nonDerivative · entry 1

LaVange Lisa · CIK 0001774849 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,033

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2021 Equity Incentive Plan.

SEC source: 0001683168-21-003563 · ownership.xml · nonDerivative · entry 1

Ralph David L. · CIK 0001543736 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,450

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2021 Equity Incentive Plan.

SEC source: 0001683168-21-003560 · ownership.xml · nonDerivative · entry 1

WEINER DANIEL L · CIK 0001134615 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,527

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2021 Equity Incentive Plan.

SEC source: 0001683168-21-003211 · ownership.xml · nonDerivative · entry 2

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,436,112

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3) and (4) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F4 · price: These shares were sold in multiple transactions at prices ranging from $46.89 to $47.69, inclusive.

SEC source: 0001683168-21-003211 · ownership.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,443,657

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3) and (4) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F3 · price: These shares were sold in multiple transactions at prices ranging from $46.86 to $47.52, inclusive.

SEC source: 0001683168-21-002737 · ownership.xml · nonDerivative · entry 4

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,456,112

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4), (5) and (6) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F6 · price: These shares were sold in multiple transactions at prices ranging from $53.06 to $53.87, inclusive.

SEC source: 0001683168-21-002737 · ownership.xml · nonDerivative · entry 3

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,464,233

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4), (5) and (6) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F5 · price: These shares were sold in multiple transactions at prices ranging from $52.01 to $52.99, inclusive.

SEC source: 0001683168-21-002737 · ownership.xml · nonDerivative · entry 2

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,469,414

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4), (5) and (6) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F4 · price: These shares were sold in multiple transactions at prices ranging from $54.12 to $54.69, inclusive.

SEC source: 0001683168-21-002737 · ownership.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,471,512

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4), (5) and (6) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F3 · price: These shares were sold in multiple transactions at prices ranging from $53.11 to $54.08, inclusive.

SEC source: 0001683168-21-002244 · ownership.xml · nonDerivative · entry 5

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,480,112

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4), (5), (6) and (7) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F7 · price: These shares were sold in multiple transactions at prices ranging from $51.71 to $51.78, inclusive.

SEC source: 0001683168-21-002244 · ownership.xml · nonDerivative · entry 4

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,480,423

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4), (5), (6) and (7) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F6 · price: These shares were sold in multiple transactions at prices ranging from $50.63 to $51.47, inclusive.

SEC source: 0001683168-21-002244 · ownership.xml · nonDerivative · entry 3

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,490,287

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4), (5), (6) and (7) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F5 · price: These shares were sold in multiple transactions at prices ranging from $53.42 to $54.20, inclusive.

SEC source: 0001683168-21-002244 · ownership.xml · nonDerivative · entry 2

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,491,941

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4), (5), (6) and (7) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F4 · price: These shares were sold in multiple transactions at prices ranging from $52.38 to $53.36, inclusive.

SEC source: 0001683168-21-002244 · ownership.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,494,071

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4), (5), (6) and (7) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F3 · price: These shares were sold in multiple transactions at prices ranging from $51.34 to $52.32, inclusive.

SEC source: 0001683168-21-001749 · ownership.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · Director

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,504,112

F1 · price: Stock granted as director compensation, issued under the issuer's 2017 Equity Incentive Plan.

SEC source: 0001683168-21-001748 · ownership.xml · nonDerivative · entry 1

WEINER DANIEL L · CIK 0001134615 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,156

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2017 Equity Incentive Plan.

SEC source: 0001683168-21-001747 · ownership.xml · nonDerivative · entry 1

Ralph David L. · CIK 0001543736 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,079

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2017 Equity Incentive Plan.

SEC source: 0001683168-21-001745 · ownership.xml · nonDerivative · entry 1

LaVange Lisa · CIK 0001774849 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,662

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2017 Equity Incentive Plan.

SEC source: 0001683168-21-001746 · ownership.xml · nonDerivative · entry 1

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 498

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2017 Equity Incentive Plan.

SEC source: 0001683168-21-001558 · ownership.xml · nonDerivative · entry 3

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,503,835

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4) and (5) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F5 · price: These shares were sold in multiple transactions at prices ranging from $69.42 to $69.70, inclusive.

SEC source: 0001683168-21-001558 · ownership.xml · nonDerivative · entry 2

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,505,946

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4) and (5) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F4 · price: These shares were sold in multiple transactions at prices ranging from $68.41 to $69.40, inclusive.

SEC source: 0001683168-21-001558 · ownership.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,519,478

F1 · kind: The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (3), (4) and (5) of this Form 4. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F3 · price: These shares were sold in multiple transactions at prices ranging from $67.41 to $68.40, inclusive.

SEC source: 0001222526-21-000006 · primary_doc.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,527,835

F1 · price: Automatic sales under 10b5-1 program. Average price of sales ranging from $58.29 to 61.51.

SEC source: 0001683168-21-001197 · primary_doc.xml · nonDerivative · entry 4

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,527,835

F1 · security: This Amendment No. 1 ("Form 4/A") to the Form 4 filed by the reporting person on March 25, 2021 (the "Original Form 4") is being filed (i) to correctly characterize the transactions reported therein as dispositions, rather than acquisitions, as previously reported in error on the Original Form 4, and (ii) to aggregate only those sales falling within a $1.00 price range in a single transaction line item. This Form 4/A amends and restates in its entirety the Original Form 4.

F2 · kind: The sales reported in this Form 4/A were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (4), (5), (6) and (7) of this Form 4/A. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F7 · price: These shares were sold in multiple transactions at prices ranging from $61.37 to $61.51, inclusive.

F1 · acquired: This Amendment No. 1 ("Form 4/A") to the Form 4 filed by the reporting person on March 25, 2021 (the "Original Form 4") is being filed (i) to correctly characterize the transactions reported therein as dispositions, rather than acquisitions, as previously reported in error on the Original Form 4, and (ii) to aggregate only those sales falling within a $1.00 price range in a single transaction line item. This Form 4/A amends and restates in its entirety the Original Form 4.

SEC source: 0001683168-21-001197 · primary_doc.xml · nonDerivative · entry 3

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,530,341

F1 · security: This Amendment No. 1 ("Form 4/A") to the Form 4 filed by the reporting person on March 25, 2021 (the "Original Form 4") is being filed (i) to correctly characterize the transactions reported therein as dispositions, rather than acquisitions, as previously reported in error on the Original Form 4, and (ii) to aggregate only those sales falling within a $1.00 price range in a single transaction line item. This Form 4/A amends and restates in its entirety the Original Form 4.

F2 · kind: The sales reported in this Form 4/A were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (4), (5), (6) and (7) of this Form 4/A. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F6 · price: These shares were sold in multiple transactions at prices ranging from $60.36 to $61.35, inclusive.

F1 · acquired: This Amendment No. 1 ("Form 4/A") to the Form 4 filed by the reporting person on March 25, 2021 (the "Original Form 4") is being filed (i) to correctly characterize the transactions reported therein as dispositions, rather than acquisitions, as previously reported in error on the Original Form 4, and (ii) to aggregate only those sales falling within a $1.00 price range in a single transaction line item. This Form 4/A amends and restates in its entirety the Original Form 4.

SEC source: 0001683168-21-001197 · primary_doc.xml · nonDerivative · entry 2

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,535,197

F1 · security: This Amendment No. 1 ("Form 4/A") to the Form 4 filed by the reporting person on March 25, 2021 (the "Original Form 4") is being filed (i) to correctly characterize the transactions reported therein as dispositions, rather than acquisitions, as previously reported in error on the Original Form 4, and (ii) to aggregate only those sales falling within a $1.00 price range in a single transaction line item. This Form 4/A amends and restates in its entirety the Original Form 4.

F2 · kind: The sales reported in this Form 4/A were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (4), (5), (6) and (7) of this Form 4/A. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F5 · price: These shares were sold in multiple transactions at prices ranging from $59.29 to $60.27, inclusive.

F1 · acquired: This Amendment No. 1 ("Form 4/A") to the Form 4 filed by the reporting person on March 25, 2021 (the "Original Form 4") is being filed (i) to correctly characterize the transactions reported therein as dispositions, rather than acquisitions, as previously reported in error on the Original Form 4, and (ii) to aggregate only those sales falling within a $1.00 price range in a single transaction line item. This Form 4/A amends and restates in its entirety the Original Form 4.

SEC source: 0001683168-21-001197 · primary_doc.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,547,726

F1 · security: This Amendment No. 1 ("Form 4/A") to the Form 4 filed by the reporting person on March 25, 2021 (the "Original Form 4") is being filed (i) to correctly characterize the transactions reported therein as dispositions, rather than acquisitions, as previously reported in error on the Original Form 4, and (ii) to aggregate only those sales falling within a $1.00 price range in a single transaction line item. This Form 4/A amends and restates in its entirety the Original Form 4.

F2 · kind: The sales reported in this Form 4/A were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting persons.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices falling within those ranges set forth in footnotes (4), (5), (6) and (7) of this Form 4/A. The reporting persons undertake to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the relevant footnotes.

F4 · price: These shares were sold in multiple transactions at prices ranging from $58.29 to $59.23, inclusive.

F1 · acquired: This Amendment No. 1 ("Form 4/A") to the Form 4 filed by the reporting person on March 25, 2021 (the "Original Form 4") is being filed (i) to correctly characterize the transactions reported therein as dispositions, rather than acquisitions, as previously reported in error on the Original Form 4, and (ii) to aggregate only those sales falling within a $1.00 price range in a single transaction line item. This Form 4/A amends and restates in its entirety the Original Form 4.

SEC source: 0001222526-21-000005 · primary_doc.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · Director

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,551,835

F1 · price: Average price of $73.01 over sales ranging from $71.69 to $75.22. Automatic sales under 10b5-1 program.

SEC source: 0001683168-21-000531 · ownership.xml · nonDerivative · entry 1

Ralph David L. · CIK 0001543736 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,802

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.95 to $84.65, inclusive. The reporting person undertakes to provide to Simulations Plus, Inc., any security holder of Simulations Plus, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001683168-21-000389 · ownership.xml · nonDerivative · entry 1

WEINER DANIEL L · CIK 0001134615 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,879

F1 · price: The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.20 to $82.70, inclusive. The reporting person undertakes to provide to Simulations Plus, Inc., any security holder of Simulations Plus, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in the footnote to this Form 4.

SEC source: 0001222526-21-000002 · primary_doc.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,707,835

F1 · kind: Grant of shares a part of director compensation.

SEC source: 0001683168-21-000383 · ownership.xml · nonDerivative · entry 1

WEINER DANIEL L · CIK 0001134615 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,096

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2017 Equity Incentive Plan.

SEC source: 0001683168-21-000382 · ownership.xml · nonDerivative · entry 1

Ralph David L. · CIK 0001543736 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,802

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2017 Equity Incentive Plan.

SEC source: 0001683168-21-000380 · ownership.xml · nonDerivative · entry 1

LaVange Lisa · CIK 0001774849 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,385

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2017 Equity Incentive Plan.

SEC source: 0001683168-21-000381 · ownership.xml · nonDerivative · entry 1

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 221

F1 · price: Stock granted as independent director compensation, issued under the issuer's 2017 Equity Incentive Plan.

SEC source: 0001222526-21-000003 · primary_doc.xml · nonDerivative · entry 1

WOLTOSZ WALTER S · CIK 0001222526 · Director · 10% owner

WOLTOSZ VIRGINIA E · CIK 0001222527 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,575,835

F1 · balance_after: Original Form 4 erroneously reported number of shares held after the grant.

SEC source: 0001683168-21-000327 · ownership.xml · nonDerivative · entry 10

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · price: Reflects the weighted-average sale price for an aggregate of 13,260 shares sold in multiple transactions at prices ranging from $79.00 to $79.80 per share. 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 separate price.

SEC source: 0001683168-21-000299 · ownership.xml · nonDerivative · entry 1

LaVange Lisa · CIK 0001774849 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,164

SEC source: 0001683168-21-000327 · ownership.xml · derivative · entry 14

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

Underlying: Common Stock · 4,000 shares

Expires 2029-07-19

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: The option is vested over a three year period with 40% on the first anniversary of the date of grant and continuing to vest as to the 2nd and 3rd installment on the 2nd and 3rd anniversary date thereafter at 30%.

SEC source: 0001683168-21-000327 · ownership.xml · derivative · entry 13

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,750 shares

Expires 2027-08-31

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: Fully Vested

SEC source: 0001683168-21-000327 · ownership.xml · derivative · entry 12

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,000 shares

Expires 2026-08-31

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: Fully Vested

SEC source: 0001683168-21-000327 · ownership.xml · derivative · entry 11

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,750 shares

Expires 2025-08-31

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: Fully Vested

SEC source: 0001683168-21-000327 · ownership.xml · nonDerivative · entry 9

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,260

SEC source: 0001683168-21-000327 · ownership.xml · nonDerivative · entry 8

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,968

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: 0001683168-21-000327 · ownership.xml · nonDerivative · entry 7

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,968

SEC source: 0001683168-21-000327 · ownership.xml · nonDerivative · entry 6

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,646

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: 0001683168-21-000327 · ownership.xml · nonDerivative · entry 5

Paglia John Kenneth · CIK 0001627832 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,896