Marmurek Eric S 4

4 · Ribbon Communications Inc. · Filed Jun 17, 2026

AI-generated summary of this filing

Updated Jun 17, 2026

Ribbon (RBBN) CFO Eric S. Marmurek Receives Equity Awards

What Happened

Eric S. Marmurek, Chief Financial Officer of Ribbon Communications (RBBN), received three equity awards on June 15, 2026 totaling 300,000 shares (150,000 + 90,000 + 60,000). Each grant is reported as a derivative award at $0.00 per share (award/grant code A).
These awards consist of restricted stock units (RSUs) and performance stock units (PSUs) that convert to common stock on a one-for-one basis; they are not immediate cash or open-market purchases/sales.

Key Details

Transaction date: June 15, 2026; Form 4 filed June 17, 2026 (filing appears timely).
Reported grants: 150,000; 90,000; 60,000 shares (total 300,000). Price reported: $0.00 (derivative awards).
Shares owned after transaction: Not specified in the Form 4 filing.
Vesting and performance notes:
- RSUs vest one-third on June 15, 2027, with the remaining two-thirds vesting in four equal semi‑annual installments through June 15, 2029. (Footnote F2)
- One PSU tranche vests April 15, 2029 and is earned based on annual goals for the three fiscal years prior to vesting; payout may be 0%–100% of target. (Footnote F3)
- Another PSU tranche vests April 15, 2029 and is earned based on relative total shareholder return (TSR) vs. a peer group; payout may be 0%–125% of target. (Footnote F4)
These are standard equity compensation grants (code A); no sale, purchase, exercise, or tax-withholding sale is reported.

Context

Awards like RSUs and PSUs represent potential future ownership contingent on continued service and/or performance; they do not reflect immediate cash proceeds or market selling/buying activity.
PSUs are performance-contingent — the final number of shares issued can be lower or higher than the target amounts depending on achievement of the stated metrics.

Form 4

Period: 2026-06-15

EVP, Chief Financial Officer

Transactions

Award
Restructed Stock Unites (RSUs)
[F1][F2]
2026-06-15+150,000→ 150,000 total
→ Common Stock (150,000 underlying)
Award
Performance-Based RSUs (PSUs)
[F1][F3]
2026-06-15+90,000→ 90,000 total
→ Common Stock (90,000 underlying)
Award
PSUs
[F1][F4]
2026-06-15+60,000→ 60,000 total
→ Common Stock (60,000 underlying)

Footnotes (4)

[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.

Signature

Patrick Macken, By POA from Eric S. Marmurek|2026-06-17

1 file