Disclosure 0001708055-26-000080-1

SEC FORM 4

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Ribbon Communications Inc. (RBBN)

Acquisition (code M) of 37,500 shares; price not stated (see filing).

Reporting Person Marmurek Eric S · Officer Title EVP, Chief Financial Officer · Transaction Code M

Traded Oct 15, 2026 · Disclosed Oct 19, 2026

Source: SEC Form 4 · 0001708055-26-000080 · filed 2026-10-19 · View filing →

Composed from the Form 4 as filed with the SEC. Share counts, prices and dates are the filing's own; the disclosure lag is counted in business days from the transaction date to the filing date. What is a Form 4?

Cite this card

Desq Long. "Ribbon Communications Inc. (RBBN)." Disclosed 2026-10-19. https://desqlong.com/cards/0001708055-26-000080-1 (retrieved 2026-10-20).