RBBN

SEC source: 0001062993-24-008599 · form4.xml · derivative · entry 9

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 31,714 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F4 · derivative.exercise_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

F4 · derivative.expiration_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

SEC source: 0001062993-24-008599 · form4.xml · derivative · entry 8

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 31,714 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F4 · derivative.exercise_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

F4 · derivative.expiration_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

SEC source: 0001062993-24-008599 · form4.xml · derivative · entry 7

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,447

Underlying: Common Stock · 77,448 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F3 · derivative.exercise_date: The RSUs were granted on April 17, 2023 and vested as to one-half on April 17, 2024; the remaining half of the RSUs vest in two equal installments thereafter on July 17, 2024 and October 17, 2024.

F3 · derivative.expiration_date: The RSUs were granted on April 17, 2023 and vested as to one-half on April 17, 2024; the remaining half of the RSUs vest in two equal installments thereafter on July 17, 2024 and October 17, 2024.

SEC source: 0001062993-24-008599 · form4.xml · nonDerivative · entry 4

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 377,264

F2 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.

SEC source: 0001062993-24-008599 · form4.xml · nonDerivative · entry 3

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 429,997

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-008599 · form4.xml · nonDerivative · entry 2

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 398,283

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-008599 · form4.xml · nonDerivative · entry 1

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 366,569

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-008601 · form4.xml · derivative · entry 5

Redington Dan · CIK 0001967463 · EVP, Global Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,465 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F4 · derivative.exercise_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

F4 · derivative.expiration_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

SEC source: 0001062993-24-008601 · form4.xml · derivative · entry 4

Redington Dan · CIK 0001967463 · EVP, Global Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,283

Underlying: Common Stock · 36,143 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F3 · derivative.exercise_date: The RSUs were granted on April 17, 2023 and vested as to one-third on April 17, 2024; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through April 17, 2026.

F3 · derivative.expiration_date: The RSUs were granted on April 17, 2023 and vested as to one-third on April 17, 2024; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through April 17, 2026.

SEC source: 0001062993-24-008601 · form4.xml · nonDerivative · entry 3

Redington Dan · CIK 0001967463 · EVP, Global Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,654

F2 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.

SEC source: 0001062993-24-008601 · form4.xml · nonDerivative · entry 2

Redington Dan · CIK 0001967463 · EVP, Global Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 127,447

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-008601 · form4.xml · nonDerivative · entry 1

Redington Dan · CIK 0001967463 · EVP, Global Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,982

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-008600 · form4.xml · derivative · entry 7

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,721 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F4 · derivative.exercise_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

F4 · derivative.expiration_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

SEC source: 0001062993-24-008600 · form4.xml · derivative · entry 6

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,262

Underlying: Common Stock · 51,633 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F3 · derivative.exercise_date: The RSUs were granted on April 17, 2023 and vested as to one-third on April 17, 2024; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through April 17, 2026.

F3 · derivative.expiration_date: The RSUs were granted on April 17, 2023 and vested as to one-third on April 17, 2024; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through April 17, 2026.

SEC source: 0001062993-24-008600 · form4.xml · nonDerivative · entry 3

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 307,926

F2 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.

SEC source: 0001062993-24-008600 · form4.xml · nonDerivative · entry 2

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 348,274

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-008600 · form4.xml · nonDerivative · entry 1

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 322,553

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-008595 · form4.xml · derivative · entry 5

Marmurek Eric S · CIK 0001720721 · SVP, Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,468

Underlying: Common Stock · 46,469 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 Restricted Stock Unit (RSU) converts into common stock on a one-for-one basis.

F3 · derivative.exercise_date: The RSUs were granted on April 17, 2023 and vested as to one-half on April 17, 2024; the remaining half of the RSUs vest in two equal installments thereafter on July 17, 2024 and October 17, 2024.

F3 · derivative.expiration_date: The RSUs were granted on April 17, 2023 and vested as to one-half on April 17, 2024; the remaining half of the RSUs vest in two equal installments thereafter on July 17, 2024 and October 17, 2024.

SEC source: 0001062993-24-008595 · form4.xml · nonDerivative · entry 2

Marmurek Eric S · CIK 0001720721 · SVP, Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 281,239

F2 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.

SEC source: 0001062993-24-008595 · form4.xml · nonDerivative · entry 1

Marmurek Eric S · CIK 0001720721 · SVP, Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 298,308

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 · price: Each Restricted Stock Unit (RSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-25-005789 · form4a.xml · derivative · entry 3

Macken Patrick W · CIK 0001641965 · EVP, CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,257 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 Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F2 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 2,020 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction. All other amounts shown on the original Form 4 filing are correct.

F4 · derivative.exercise_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

F4 · derivative.expiration_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

SEC source: 0001062993-25-005789 · form4a.xml · nonDerivative · entry 2

Macken Patrick W · CIK 0001641965 · EVP, CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 224,429

F2 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 2,020 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction. All other amounts shown on the original Form 4 filing are correct.

F3 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.

SEC source: 0001062993-25-005789 · form4a.xml · nonDerivative · entry 1

Macken Patrick W · CIK 0001641965 · EVP, CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 234,801

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 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 2,020 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction. All other amounts shown on the original Form 4 filing are correct.

F1 · price: Each Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-25-005791 · form4a.xml · derivative · entry 3

McClelland Bruce William · CIK 0001424201 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 111,525 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 Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F2 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 9,292 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

F4 · derivative.exercise_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

F4 · derivative.expiration_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

SEC source: 0001062993-25-005791 · form4a.xml · nonDerivative · entry 2

McClelland Bruce William · CIK 0001424201 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,299,228

F2 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 9,292 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

F3 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.

SEC source: 0001062993-25-005791 · form4a.xml · nonDerivative · entry 1

McClelland Bruce William · CIK 0001424201 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,342,332

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 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 9,292 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

F1 · price: Each Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-25-005793 · form4a.xml · derivative · entry 3

Redington Dan · CIK 0001967463 · EVP, Global Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 23,743 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 Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F4 · derivative.exercise_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

F4 · derivative.expiration_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

SEC source: 0001062993-25-005793 · form4a.xml · nonDerivative · entry 2

Redington Dan · CIK 0001967463 · EVP, Global Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,158

F2 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 1,881 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

F3 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.

F2 · balance_after: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 1,881 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

SEC source: 0001062993-25-005793 · form4a.xml · nonDerivative · entry 1

Redington Dan · CIK 0001967463 · EVP, Global Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 125,566

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 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 1,881 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

F1 · price: Each Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F2 · balance_after: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 1,881 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

SEC source: 0001062993-25-005792 · form4a.xml · derivative · entry 3

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 23,743 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 Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F2 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 1,978 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

F4 · derivative.exercise_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

F4 · derivative.expiration_date: The PSUs were issued on April 17, 2023. The number of PSUs earned and vested was based on achievement of a revenue goal set (prior to grant) by the Compensation Committee of the Issuer's Board of Directors for the fiscal year ended December 31, 2023. The remaining PSUs were forfeited.

F2 · derivative.underlying_shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 1,978 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

SEC source: 0001062993-25-005792 · form4a.xml · nonDerivative · entry 2

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 333,587

F2 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 1,978 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

F3 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.

SEC source: 0001062993-25-005792 · form4a.xml · nonDerivative · entry 1

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 346,296

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 · shares: Original Form 4 filing overstated the number of shares issued upon vesting of this PSU award by 1,978 shares. This amendment has been filed to correct the vesting amount and the amount shown in Column 5 reflects total shares owned after correcting this transaction.

F1 · price: Each Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-008451 · form4.xml · nonDerivative · entry 1

GRAYSON BRUNS H · CIK 0001204899 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 600,721

F1 · kind: Represents shares issued in lieu of receipt of cash fees for service on the Registrant's Board of Directors and committees thereof.

F2 · price: Price determined in accordance with Registrant's Non-Employee Director Compensation Policy.

SEC source: 0001062993-24-006577 · form4.xml · derivative · entry 5

Macken Patrick W · CIK 0001641965 · EVP, CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,059 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F2 · derivative.exercise_date: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years ended December 31, 2023. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% of the shares subject to the 2023 financial period were earned and vested on March 15, 2024, and no shares were earned for the 2021 and 2022 performance periods and were forfeited.

F2 · derivative.expiration_date: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years ended December 31, 2023. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% of the shares subject to the 2023 financial period were earned and vested on March 15, 2024, and no shares were earned for the 2021 and 2022 performance periods and were forfeited.

SEC source: 0001062993-24-006577 · form4.xml · derivative · entry 4

Macken Patrick W · CIK 0001641965 · EVP, CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,965 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F4 · derivative.exercise_date: The RSUs were granted on March 15, 2021 and vested as to one-third on March 15, 2022; the remaining two-thirds of the RSUs vested in four equal semi-annual installments thereafter through March 15, 2024.

F4 · derivative.expiration_date: The RSUs were granted on March 15, 2021 and vested as to one-third on March 15, 2022; the remaining two-thirds of the RSUs vested in four equal semi-annual installments thereafter through March 15, 2024.

SEC source: 0001062993-24-006577 · form4.xml · nonDerivative · entry 3

Macken Patrick W · CIK 0001641965 · EVP, CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,237

F3 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of the RSUs and PSUs.

SEC source: 0001062993-24-006577 · form4.xml · nonDerivative · entry 2

Macken Patrick W · CIK 0001641965 · EVP, CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 172,972

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 · price: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years ended December 31, 2023. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% of the shares subject to the 2023 financial period were earned and vested on March 15, 2024, and no shares were earned for the 2021 and 2022 performance periods and were forfeited.

SEC source: 0001062993-24-006577 · form4.xml · nonDerivative · entry 1

Macken Patrick W · CIK 0001641965 · EVP, CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,913

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-006569 · form4.xml · nonDerivative · entry 1

GRAYSON BRUNS H · CIK 0001204899 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 590,175

SEC source: 0001062993-24-006570 · form4.xml · derivative · entry 6

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,441 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.

F2 · derivative.exercise_price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F3 · derivative.exercise_date: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years ended December 31, 2023. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% of the shares subject to the 2023 financial period were earned and vested on March 15, 2024, and no shares were earned for the 2021 and 2022 performance periods and were forfeited.

F3 · derivative.expiration_date: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years ended December 31, 2023. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% of the shares subject to the 2023 financial period were earned and vested on March 15, 2024, and no shares were earned for the 2021 and 2022 performance periods and were forfeited.

SEC source: 0001062993-24-006570 · form4.xml · derivative · entry 5

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,960 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.

F2 · derivative.exercise_price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F5 · derivative.exercise_date: The RSUs were granted on March 15, 2021 and vested as to one-third on March 15, 2022; the remaining two-thirds of the RSUs vested in four equal semi-annual installments thereafter through March 15, 2024.

F5 · derivative.expiration_date: The RSUs were granted on March 15, 2021 and vested as to one-third on March 15, 2022; the remaining two-thirds of the RSUs vested in four equal semi-annual installments thereafter through March 15, 2024.

SEC source: 0001062993-24-006570 · form4.xml · nonDerivative · entry 4

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 289,121

F4 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of the RSUs and PSUs.

SEC source: 0001062993-24-006570 · form4.xml · nonDerivative · entry 3

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 293,276

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 · price: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years ended December 31, 2023. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% of the shares subject to the 2023 financial period were earned and vested on March 15, 2024, and no shares were earned for the 2021 and 2022 performance periods and were forfeited.

SEC source: 0001062993-24-006570 · form4.xml · nonDerivative · entry 2

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 289,835

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

SEC source: 0001062993-24-006570 · form4.xml · nonDerivative · entry 1

LOPEZ MIGUEL A · CIK 0001600024 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 280,875

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.8991 to $2.8992, inclusive. The reporting person undertakes to provide to Ribbon Communications, any security holder of Ribbon Communications, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price with the ranges set forth in this footnote.

SEC source: 0001062993-24-006578 · form4.xml · derivative · entry 5

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,059 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F2 · derivative.exercise_date: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years ended December 31, 2023. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% of the shares subject to the 2023 financial period were earned and vested on March 15, 2024, and no shares were earned for the 2021 and 2022 performance periods and were forfeited.

F2 · derivative.expiration_date: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years ended December 31, 2023. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% of the shares subject to the 2023 financial period were earned and vested on March 15, 2024, and no shares were earned for the 2021 and 2022 performance periods and were forfeited.

SEC source: 0001062993-24-006578 · form4.xml · derivative · entry 4

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,965 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 Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F4 · derivative.exercise_date: The RSUs were granted on March 15, 2021 and vested as to one-third on March 15, 2022; the remaining two-thirds of the RSUs vested in four equal semi-annual installments thereafter through March 15, 2024.

F4 · derivative.expiration_date: The RSUs were granted on March 15, 2021 and vested as to one-third on March 15, 2022; the remaining two-thirds of the RSUs vested in four equal semi-annual installments thereafter through March 15, 2024.

SEC source: 0001062993-24-006578 · form4.xml · nonDerivative · entry 3

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 270,920

F3 · price: Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of the RSUs and PSUs.

SEC source: 0001062993-24-006578 · form4.xml · nonDerivative · entry 2

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 276,820

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 · price: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years ended December 31, 2023. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% of the shares subject to the 2023 financial period were earned and vested on March 15, 2024, and no shares were earned for the 2021 and 2022 performance periods and were forfeited.

SEC source: 0001062993-24-006578 · form4.xml · nonDerivative · entry 1

Bucci Sam · CIK 0001824854 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 273,761

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 · price: Each Restricted Stock Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.