Arkolith/Insider Trading/RBBN/Form 4

Marmurek Eric S

EVP, Chief Financial OfficerRibbon Communications Inc. (RBBN) · full profile →Form 4 · filed May 19, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
15
10 non-derivative · 5 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
May 15, 2026Option exercise(M)32K——540K
May 15, 2026Tax withholding(F)12K$2.63$33K528K
May 15, 2026Option exercise(M)26K——554K
May 15, 2026Tax withholding(F)10K$2.63$27K544K
May 15, 2026Option exercise(M)23K——518K
May 15, 2026Tax withholding(F)9K$2.63$24K508K
Apr 17, 2026Option exercise(M)48K——498K
Apr 17, 2026Tax withholding(F)19K$2.71$52K479K
Apr 17, 2026Option exercise(M)26K——505K
Apr 17, 2026Tax withholding(F)10K$2.71$27K495K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
May 15, 2026Option exercise(M)23K—$00
May 15, 2026Option exercise(M)26K—$052K
May 15, 2026Option exercise(M)32K—$032K
Apr 17, 2026Option exercise(M)26K—$00
Apr 17, 2026Option exercise(M)48K—$00

Transaction Codes

M
Option exercise / conversion
F
Shares withheld for taxes

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001708055-26-000034) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML

Keep exploring

Connected pages for Ribbon Communications Inc.

Build

Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Form 4 insider API

Open-market buys and sells, cluster scans, company flows.

insider.transactions

13F holdings API

Owners, holdings, deltas, point-in-time portfolios.

stock.owners

MCP quickstart

Connect an agent, mint a key, make the first call.

/api/mcp