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Marmurek Eric S

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37109
SEC CIK
0001720721

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Ribbon Communications Inc.RBBN · Entity 5785EVP, Chief Financial OfficerJune 15, 2026June 17, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Ribbon Communications Inc.

Report date June 15, 2026 · Filed June 17, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Restructed Stock Unites (RSUs)SEC Table II · derivative / convertible securityDirect150,000 Reported balance After 2026-06-15 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-06-15 · Grant · Acquired 150,000 · Balance 150,000

F1: The RSUs and PSUs convert to Common Stock on a one-for-one basis.

F2: The RSUs vest as to one-third on June 15, 2027; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through June 15, 2029.

Performance-Based RSUs (PSUs)SEC Table II · derivative / convertible securityDirect90,000 Reported balance After 2026-06-15 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-06-15 · Grant · Acquired 90,000 · Balance 90,000

F1: The RSUs and PSUs convert to Common Stock on a one-for-one basis.

F3: The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee of the Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years prior to the vesting date. The aggregate number of shares issued may range from zero shares to 100% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. These PSUs will vest on April 15, 2029.

PSUsSEC Table II · derivative / convertible securityDirect60,000 Reported balance After 2026-06-15 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-06-15 · Grant · Acquired 60,000 · Balance 60,000

F1: The RSUs and PSUs convert to Common Stock on a one-for-one basis.

F4: The number of PSUs earned and issuable upon vesting will be determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ending prior to the vesting date. The aggregate number of shares issued may range from zero shares to 125% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. These PSUs will vest on April 15, 2029.

Filing footnotes · ownership attribution and instrument terms

F1: The RSUs and PSUs convert to Common Stock on a one-for-one basis.

F2: The RSUs vest as to one-third on June 15, 2027; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through June 15, 2029.

F3: The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee of the Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years prior to the vesting date. The aggregate number of shares issued may range from zero shares to 100% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. These PSUs will vest on April 15, 2029.

F4: The number of PSUs earned and issuable upon vesting will be determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ending prior to the vesting date. The aggregate number of shares issued may range from zero shares to 125% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. These PSUs will vest on April 15, 2029.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
June 15, 2026 Filed Jun 17, 2026 20:44 UTC Ribbon Communications Inc. RBBN · Entity 5785 GrantPSUs · Derivative 60,000 $0.00 $0.00
Disclosure

SEC source: 0001708055-26-000056 · form4.xml · derivative · entry 3

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires not disclosed

F1 · derivative.exercise_price: The RSUs and PSUs convert to Common Stock on a one-for-one basis.

F4 · derivative.exercise_date: The number of PSUs earned and issuable upon vesting will be determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ending prior to the vesting date. The aggregate number of shares issued may range from zero shares to 125% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. These PSUs will vest on April 15, 2029.

F4 · derivative.expiration_date: The number of PSUs earned and issuable upon vesting will be determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ending prior to the vesting date. The aggregate number of shares issued may range from zero shares to 125% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. These PSUs will vest on April 15, 2029.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:44 UTC Ribbon Communications Inc. RBBN · Entity 5785 GrantPerformance-Based RSUs (PSUs) · Derivative 90,000 $0.00 $0.00
Disclosure

SEC source: 0001708055-26-000056 · form4.xml · derivative · entry 2

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,000

Underlying: Common Stock · 90,000 shares

Expires not disclosed

F1 · derivative.exercise_price: The RSUs and PSUs convert to Common Stock on a one-for-one basis.

F3 · derivative.exercise_date: The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee of the Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years prior to the vesting date. The aggregate number of shares issued may range from zero shares to 100% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. These PSUs will vest on April 15, 2029.

F3 · derivative.expiration_date: The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee of the Board of Directors (the "Compensation Committee") on an annual basis) for each of the three fiscal years prior to the vesting date. The aggregate number of shares issued may range from zero shares to 100% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. These PSUs will vest on April 15, 2029.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:44 UTC Ribbon Communications Inc. RBBN · Entity 5785 GrantRestructed Stock Unites (RSUs) · Derivative 150,000 $0.00 $0.00
Disclosure

SEC source: 0001708055-26-000056 · form4.xml · derivative · entry 1

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,000

Underlying: Common Stock · 150,000 shares

Expires not disclosed

F1 · derivative.exercise_price: The RSUs and PSUs convert to Common Stock on a one-for-one basis.

F2 · derivative.exercise_date: The RSUs vest as to one-third on June 15, 2027; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through June 15, 2029.

F2 · derivative.expiration_date: The RSUs vest as to one-third on June 15, 2027; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through June 15, 2029.

Read SEC document
May 15, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionRSUs · Derivative 31,646 $0.00 $0.00
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · derivative · entry 15

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,645

Underlying: Common Stock · 31,646 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 Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F7 · derivative.exercise_date: The RSUs were granted on May 15, 2025 and vested as to one-half on May 15, 2026; the remaining one-half of the RSUs will vest in two equal semi-annual installments thereafter through May 15, 2027.

F7 · derivative.expiration_date: The RSUs were granted on May 15, 2025 and vested as to one-half on May 15, 2026; the remaining one-half of the RSUs will vest in two equal semi-annual installments thereafter through May 15, 2027.

F7 · balance_after: The RSUs were granted on May 15, 2025 and vested as to one-half on May 15, 2026; the remaining one-half of the RSUs will vest in two equal semi-annual installments thereafter through May 15, 2027.

Read SEC document
May 15, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionRSUs · Derivative 26,043 $0.00 $0.00
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · derivative · entry 14

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,082

Underlying: Common Stock · 26,043 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 Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F6 · derivative.exercise_date: The RSUs were granted on May 15, 2025 and vested as to one-third on May 15, 2026; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through May 15, 2028.

F6 · derivative.expiration_date: The RSUs were granted on May 15, 2025 and vested as to one-third on May 15, 2026; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through May 15, 2028.

F6 · balance_after: The RSUs were granted on May 15, 2025 and vested as to one-third on May 15, 2026; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through May 15, 2028.

Read SEC document
May 15, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionPSUs · Derivative 23,146 $0.00 $0.00
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · derivative · entry 13

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 23,146 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 Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F5 · derivative.exercise_date: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee on an annual basis) for each of the two fiscal years ended December 31, 2025. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 70% and 36% of the shares subject to the 2024 and 2025 financial periods, respectively, were earned and vested on May 15, 2026.

F5 · derivative.expiration_date: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee on an annual basis) for each of the two fiscal years ended December 31, 2025. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 70% and 36% of the shares subject to the 2024 and 2025 financial periods, respectively, were earned and vested on May 15, 2026.

F5 · balance_after: The number of PSUs earned and issued upon vesting was determined based on goals (set by the Compensation Committee on an annual basis) for each of the two fiscal years ended December 31, 2025. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 70% and 36% of the shares subject to the 2024 and 2025 financial periods, respectively, were earned and vested on May 15, 2026.

Read SEC document
May 15, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 10,247 $2.63 $26,949.61
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 10

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 543,706

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

Read SEC document
May 15, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 26,043 Not disclosed Not disclosed
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 9

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 553,953

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 Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

Read SEC document
May 15, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 12,452 $2.63 $32,748.76
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 8

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 527,910

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

Read SEC document
May 15, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 31,646 Not disclosed Not disclosed
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 7

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 540,362

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 Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

Read SEC document
May 15, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 9,107 $2.63 $23,951.41
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 6

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 508,176

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

Read SEC document
May 15, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 23,146 Not disclosed Not disclosed
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 5

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 517,823

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 Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

Read SEC document
April 17, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionPSUs · Derivative 48,328 $0.00 $0.00
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · derivative · entry 12

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 48,328 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 Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

F4 · derivative.exercise_date: The number of PSUs earned and issued upon vesting was determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ended December 31, 2025. Based on the Compensation Committee's determination of achievement of the pre-established TSR goal, 130% of the shares subject to the PSU award were earned and vested on April 17, 2026.

F4 · derivative.expiration_date: The number of PSUs earned and issued upon vesting was determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ended December 31, 2025. Based on the Compensation Committee's determination of achievement of the pre-established TSR goal, 130% of the shares subject to the PSU award were earned and vested on April 17, 2026.

F4 · balance_after: The number of PSUs earned and issued upon vesting was determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ended December 31, 2025. Based on the Compensation Committee's determination of achievement of the pre-established TSR goal, 130% of the shares subject to the PSU award were earned and vested on April 17, 2026.

Read SEC document
April 17, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionPerformance Share Units (PSUs) · Derivative 25,651 $0.00 $0.00
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · derivative · entry 11

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,651 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 Share 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, 2025. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32%, 70% and 36% of the shares subject to the 2023, 2024 and 2025 financial periods, respectively, were earned and vested on April 17, 2026.

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, 2025. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32%, 70% and 36% of the shares subject to the 2023, 2024 and 2025 financial periods, respectively, were earned and vested on April 17, 2026.

F3 · balance_after: 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, 2025. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32%, 70% and 36% of the shares subject to the 2023, 2024 and 2025 financial periods, respectively, were earned and vested on April 17, 2026.

Read SEC document
April 17, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 10,092 $2.71 $27,349.32
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 4

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 494,677

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

Read SEC document
April 17, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 25,651 Not disclosed Not disclosed
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 3

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 504,769

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 Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

Read SEC document
April 17, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 19,107 $2.71 $51,779.97
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 2

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 479,118

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

Read SEC document
April 17, 2026 Filed May 19, 2026 12:12 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 48,328 Not disclosed Not disclosed
Disclosure

SEC source: 0001708055-26-000034 · form4.xml · nonDerivative · entry 1

Marmurek Eric S · CIK 0001720721 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 498,135

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 Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.

Read SEC document
April 15, 2026 Filed Apr 17, 2026 12:39 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionRestricted Stock Units (RSUs) · Derivative 37,500 $0.00 $0.00
Disclosure

SEC source: 0001708055-26-000022 · form4.xml · derivative · entry 3

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,500

Underlying: Common Stock · 37,500 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: Eash RSU represents a contingent right to receive one share of the Registrant's common stock.

F3 · derivative.exercise_date: The RSUs were issued on October 15, 2024. The remaining RSUs vest on October 15, 2026.

F3 · derivative.expiration_date: The RSUs were issued on October 15, 2024. The remaining RSUs vest on October 15, 2026.

Read SEC document
April 15, 2026 Filed Apr 17, 2026 12:39 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 14,756 $2.48 $36,594.88
Disclosure

SEC source: 0001708055-26-000022 · form4.xml · nonDerivative · entry 2

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 449,807

F2 · price: Reflects shares of common stock withheld by the Registrant to satisfy tax withholding obligations in connection with the vesting.

Read SEC document
April 15, 2026 Filed Apr 17, 2026 12:39 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 37,500 Not disclosed Not disclosed
Disclosure

SEC source: 0001708055-26-000022 · form4.xml · nonDerivative · entry 1

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 464,563

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: Eash RSU represents a contingent right to receive one share of the Registrant's common stock.

Read SEC document
December 15, 2025 Filed Dec 16, 2025 21:57 UTC Ribbon Communications Inc. RBBN · Entity 5785 GrantRestricted Stock Units (RSUs) · Derivative 169,721 $0.00 $0.00
Disclosure

SEC source: 0001708055-25-000041 · form4.xml · derivative · entry 1

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,721

Underlying: Common Stock · 169,721 shares

Expires not disclosed

F1 · derivative.exercise_price: Eash RSU represents a contingent right to receive one share of the Registrant's common stock.

F2 · derivative.exercise_date: The RSUs were issued on December 12, 2025 and will vest as to 50% on December 15, 2026, with the remaining 50% of the RSUs vesting on December 15, 2027.

F2 · derivative.expiration_date: The RSUs were issued on December 12, 2025 and will vest as to 50% on December 15, 2026, with the remaining 50% of the RSUs vesting on December 15, 2027.

Read SEC document
October 15, 2025 Filed Oct 17, 2025 21:22 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionRestricted Stock Units (RSUs) · Derivative 75,000 $0.00 $0.00
Disclosure

SEC source: 0001708055-25-000027 · form4.xml · derivative · entry 3

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 75,000 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: Eash RSU represents a contingent right to receive one share of the Registrant's common stock.

F3 · derivative.exercise_date: The RSUs were issued on October 15, 2024 and vested as to 50% on October 15, 2025. The remaining 50% of the RSUs vest in two equal semi-annual installments thereafter through October 15, 2026.

F3 · derivative.expiration_date: The RSUs were issued on October 15, 2024 and vested as to 50% on October 15, 2025. The remaining 50% of the RSUs vest in two equal semi-annual installments thereafter through October 15, 2026.

Read SEC document
October 15, 2025 Filed Oct 17, 2025 21:22 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 29,512 $3.81 $112,440.72
Disclosure

SEC source: 0001708055-25-000027 · form4.xml · nonDerivative · entry 2

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 427,063

F2 · price: Reflects shares of common stock withheld by the Registrant to satisfy tax withholding obligations in connection with the vesting.

Read SEC document
October 15, 2025 Filed Oct 17, 2025 21:22 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 75,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001708055-25-000027 · form4.xml · nonDerivative · entry 1

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 456,575

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: Eash RSU represents a contingent right to receive one share of the Registrant's common stock.

Read SEC document
May 16, 2025 Filed May 19, 2025 20:20 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionRSUs · Derivative 31,645 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-009790 · form4.xml · derivative · entry 8

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 31,645 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.

F8 · derivative.exercise_price: The RSUs were granted on May 15, 2024 and vested in full on May 16, 2025.

F8 · derivative.exercise_date: The RSUs were granted on May 15, 2024 and vested in full on May 16, 2025.

F8 · derivative.expiration_date: The RSUs were granted on May 15, 2024 and vested in full on May 16, 2025.

Read SEC document
May 16, 2025 Filed May 19, 2025 20:20 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 12,452 $3.62 $45,076.24
Disclosure

SEC source: 0001062993-25-009790 · form4.xml · nonDerivative · entry 2

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 381,575

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

Read SEC document
May 16, 2025 Filed May 19, 2025 20:20 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 31,645 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-25-009790 · form4.xml · nonDerivative · entry 1

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 394,027

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: These RSUs convert to Common Stock on a one-for-one basis.

Read SEC document
May 15, 2025 Filed May 19, 2025 20:20 UTC Ribbon Communications Inc. RBBN · Entity 5785 GrantPSUs · Derivative 36,392 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-009790 · form4.xml · derivative · entry 7

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,392

Underlying: Common Stock · 36,392 shares

Expires not disclosed

F7 · derivative.exercise_price: Each PSU represents a contingent right to receive one share of the Issuer's Common Stock. The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee on an annual basis) for the fiscal year ending December 31, 2026. The aggregate number of shares issued may range from zero shares to 150% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. This PSU will vest on May 15, 2027.

F7 · derivative.exercise_date: Each PSU represents a contingent right to receive one share of the Issuer's Common Stock. The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee on an annual basis) for the fiscal year ending December 31, 2026. The aggregate number of shares issued may range from zero shares to 150% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. This PSU will vest on May 15, 2027.

F7 · derivative.expiration_date: Each PSU represents a contingent right to receive one share of the Issuer's Common Stock. The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee on an annual basis) for the fiscal year ending December 31, 2026. The aggregate number of shares issued may range from zero shares to 150% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. This PSU will vest on May 15, 2027.

Read SEC document
May 15, 2025 Filed May 19, 2025 20:20 UTC Ribbon Communications Inc. RBBN · Entity 5785 GrantPSUs · Derivative 31,250 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-009790 · form4.xml · derivative · entry 6

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,250

Underlying: Common Stock · 31,250 shares

Expires not disclosed

F6 · derivative.exercise_price: Each PSU represents a contingent right to receive one share of the Issuer's Common Stock, based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ending prior to the vesting date. The aggregate number of shares issued may range from zero shares to 200% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. This PSU will vest on May 15, 2028.

F6 · derivative.exercise_date: Each PSU represents a contingent right to receive one share of the Issuer's Common Stock, based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ending prior to the vesting date. The aggregate number of shares issued may range from zero shares to 200% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. This PSU will vest on May 15, 2028.

F6 · derivative.expiration_date: Each PSU represents a contingent right to receive one share of the Issuer's Common Stock, based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ending prior to the vesting date. The aggregate number of shares issued may range from zero shares to 200% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. This PSU will vest on May 15, 2028.

Read SEC document
May 15, 2025 Filed May 19, 2025 20:20 UTC Ribbon Communications Inc. RBBN · Entity 5785 GrantPerformance-Based RSUs (PSUs) · Derivative 46,875 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-009790 · form4.xml · derivative · entry 5

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,875

Underlying: Common Stock · 46,875 shares

Expires not disclosed

F5 · derivative.exercise_price: Each PSU represents a contingent right to receive one share of the Issuer's Common Stock. The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee on an annual basis) for each of the three fiscal years prior to the vesting date. The aggregate number of shares issued may range from zero shares to 150% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. This PSU will vest on May 15, 2028.

F5 · derivative.exercise_date: Each PSU represents a contingent right to receive one share of the Issuer's Common Stock. The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee on an annual basis) for each of the three fiscal years prior to the vesting date. The aggregate number of shares issued may range from zero shares to 150% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. This PSU will vest on May 15, 2028.

F5 · derivative.expiration_date: Each PSU represents a contingent right to receive one share of the Issuer's Common Stock. The number of PSUs earned and issuable upon vesting will be determined based on goals (set by the Compensation Committee on an annual basis) for each of the three fiscal years prior to the vesting date. The aggregate number of shares issued may range from zero shares to 150% of the target number of shares reported in columns 5, 7 and 9 of Table II. The number of PSUs reported in columns 5, 7 and 9 of Table II reflects achievement at the target level of performance. This PSU will vest on May 15, 2028.

Read SEC document
May 15, 2025 Filed May 19, 2025 20:20 UTC Ribbon Communications Inc. RBBN · Entity 5785 GrantRSUs · Derivative 63,291 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-009790 · form4.xml · derivative · entry 4

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,291

Underlying: Common Stock · 63,291 shares

Expires not disclosed

F4 · derivative.exercise_price: The RSUs vest as to one-half on May 15, 2026; the remaining one-half of the RSUs will vest in two equal semi-annual installments thereafter through May 15, 2027.

F4 · derivative.exercise_date: The RSUs vest as to one-half on May 15, 2026; the remaining one-half of the RSUs will vest in two equal semi-annual installments thereafter through May 15, 2027.

F4 · derivative.expiration_date: The RSUs vest as to one-half on May 15, 2026; the remaining one-half of the RSUs will vest in two equal semi-annual installments thereafter through May 15, 2027.

Read SEC document
May 15, 2025 Filed May 19, 2025 20:20 UTC Ribbon Communications Inc. RBBN · Entity 5785 GrantRestricted Stock Units (RSUs) · Derivative 78,125 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-009790 · form4.xml · derivative · entry 3

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,125

Underlying: Common Stock · 78,125 shares

Expires not disclosed

F1 · derivative.exercise_price: These RSUs convert to Common Stock on a one-for-one basis.

F3 · derivative.exercise_date: The RSUs vest as to one-third on May 15, 2026; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through May 15, 2028.

F3 · derivative.expiration_date: The RSUs vest as to one-third on May 15, 2026; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through May 15, 2028.

Read SEC document
April 18, 2025 Filed Apr 22, 2025 22:48 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionRSUs · Derivative 13,354 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-007788 · form4.xml · derivative · entry 6

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 13,354 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.

F4 · derivative.exercise_date: The RSUs were granted on April 18, 2022 and vested as to one-third on April 18, 2023; the remaining two-thirds of the RSUs vested in four equal semi-annual installments thereafter through April 18, 2025.

F4 · derivative.expiration_date: The RSUs were granted on April 18, 2022 and vested as to one-third on April 18, 2023; the remaining two-thirds of the RSUs vested in four equal semi-annual installments thereafter through April 18, 2025.

Read SEC document
April 18, 2025 Filed Apr 22, 2025 22:48 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 5,254 $3.58 $18,809.32
Disclosure

SEC source: 0001062993-25-007788 · form4.xml · nonDerivative · entry 4

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 362,382

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

Read SEC document
April 18, 2025 Filed Apr 22, 2025 22:48 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 13,354 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-25-007788 · form4.xml · nonDerivative · entry 3

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 367,636

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.

Read SEC document
April 17, 2025 Filed Apr 22, 2025 22:48 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionRestricted Stock Units (RSUs) · Derivative 23,234 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-007788 · form4.xml · derivative · entry 5

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 23,234 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 originally granted on April 17, 2023 and vested as to one-half on April 17, 2024; the remaining half of the RSUs vested in two equal installments thereafter on October 17, 2024 and April 17, 2025.

F3 · derivative.expiration_date: The RSUs were originally granted on April 17, 2023 and vested as to one-half on April 17, 2024; the remaining half of the RSUs vested in two equal installments thereafter on October 17, 2024 and April 17, 2025.

Read SEC document
April 17, 2025 Filed Apr 22, 2025 22:48 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 9,142 $3.53 $32,271.26
Disclosure

SEC source: 0001062993-25-007788 · form4.xml · nonDerivative · entry 2

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 354,282

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

Read SEC document
April 17, 2025 Filed Apr 22, 2025 22:48 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 23,234 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-25-007788 · form4.xml · nonDerivative · entry 1

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 363,424

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.

Read SEC document
March 15, 2025 Filed Mar 18, 2025 22:19 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionPSUs · Derivative 32,154 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-005800 · form4.xml · derivative · entry 6

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 32,154 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 number of PSUs earned and issued upon vesting was determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ended December 31, 2024. Based on the Compensation Committee's determination of achievement of the pre-established TSR goal, 100% of the shares subject to the PSU award were earned and vested on March 15, 2025.

F4 · derivative.expiration_date: The number of PSUs earned and issued upon vesting was determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ended December 31, 2024. Based on the Compensation Committee's determination of achievement of the pre-established TSR goal, 100% of the shares subject to the PSU award were earned and vested on March 15, 2025.

Read SEC document
March 15, 2025 Filed Mar 18, 2025 22:19 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionPerformance-Based Restricted Stock Units (PSUs) · Derivative 16,399 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-005800 · form4.xml · derivative · entry 5

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 16,399 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 · 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, 2024. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% and 70% of the shares subject to the 2023 and 2024 financial periods, respectively, were earned and vested on March 15, 2025, and no shares were earned for the 2022 performance period 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, 2024. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% and 70% of the shares subject to the 2023 and 2024 financial periods, respectively, were earned and vested on March 15, 2025, and no shares were earned for the 2022 performance period and were forfeited.

Read SEC document
March 15, 2025 Filed Mar 18, 2025 22:19 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 32,154 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-25-005800 · form4.xml · nonDerivative · entry 3

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 353,122

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

F4 · price: The number of PSUs earned and issued upon vesting was determined based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of a peer index of companies (set by the Compensation Committee at the time of grant) over the three fiscal years ended December 31, 2024. Based on the Compensation Committee's determination of achievement of the pre-established TSR goal, 100% of the shares subject to the PSU award were earned and vested on March 15, 2025.

Read SEC document
March 15, 2025 Filed Mar 18, 2025 22:19 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 7,321 $3.95 $28,917.95
Disclosure

SEC source: 0001062993-25-005800 · form4.xml · nonDerivative · entry 2

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 320,968

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

Read SEC document
March 15, 2025 Filed Mar 18, 2025 22:19 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 16,399 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-25-005800 · form4.xml · nonDerivative · entry 1

Marmurek Eric S · CIK 0001720721 · SVP, CAO & Deputy CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 328,289

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

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, 2024. Based on the Compensation Committee's determination of achievement of these pre-established financial goals, 32% and 70% of the shares subject to the 2023 and 2024 financial periods, respectively, were earned and vested on March 15, 2025, and no shares were earned for the 2022 performance period and were forfeited.

Read SEC document
October 18, 2024 Filed Oct 21, 2024 23:00 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionRSUs · Derivative 13,355 $0.00 $0.00
Disclosure

SEC source: 0001062993-24-017816 · form4.xml · derivative · entry 6

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,354

Underlying: Common Stock · 13,355 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.

F4 · derivative.exercise_date: The RSUs were granted on April 18, 2022 and vested as to one-third on April 18, 2023; the remaining two-thirds of the RSUs vest in four equal semi-annual installments thereafter through April 18, 2025.

F4 · derivative.expiration_date: The RSUs were granted on April 18, 2022 and vested as to one-third on April 18, 2023; the remaining two-thirds of the RSUs vest in four equal semi-annual installments thereafter through April 18, 2025.

Read SEC document
October 18, 2024 Filed Oct 21, 2024 23:00 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 5,255 $3.56 $18,707.80
Disclosure

SEC source: 0001062993-24-017816 · form4.xml · nonDerivative · entry 4

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 311,890

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

Read SEC document
October 18, 2024 Filed Oct 21, 2024 23:00 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 13,355 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-24-017816 · form4.xml · nonDerivative · entry 3

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 317,145

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.

Read SEC document
October 17, 2024 Filed Oct 21, 2024 23:00 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionRestricted Stock Units (RSUs) · Derivative 23,234 $0.00 $0.00
Disclosure

SEC source: 0001062993-24-017816 · form4.xml · derivative · entry 5

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,234

Underlying: Common Stock · 23,234 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 October 17, 2024 and April 17, 2025.

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 October 17, 2024 and April 17, 2025.

Read SEC document
October 17, 2024 Filed Oct 21, 2024 23:00 UTC Ribbon Communications Inc. RBBN · Entity 5785 Tax withholdingCommon Stock 9,142 $3.38 $30,899.96
Disclosure

SEC source: 0001062993-24-017816 · form4.xml · nonDerivative · entry 2

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 303,790

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

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October 17, 2024 Filed Oct 21, 2024 23:00 UTC Ribbon Communications Inc. RBBN · Entity 5785 Exercise / conversionCommon Stock 23,234 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-24-017816 · form4.xml · nonDerivative · entry 1

Marmurek Eric S · CIK 0001720721 · SVP, Deputy CFO & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 312,932

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.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.