MARMUREK ERIC S

PrivateCIK: 1720721
Location

WESTFORD, MA

MARMUREK ERIC S (Principal Accounting Officer) exercised options at RIBBON COMMUNICATIONS INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderMARMUREK ERIC SCIK 1720721
Officer· Principal Accounting Officer
Since Nov 2018
-14.76K
Net shares
Net seller
$36.6K
Total sold
0
Open market trades
0B · 0S
3
Total transactions
37.50K acquired · 52.26K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+37.50K

Price / share

Trade value

% of position

8.8%
4/15/2026
427.06K464.56K

Common Stock

Direct
F · Tax Withholding

Shares

14.76K

Price / share

$2.48

Trade value

$36.59K

% of position

3.2%
4/15/2026
464.56K449.81K
Total

Net shares

+22.74K

Net value

-$36.59K

Derivative Transactions1

Restricted Stock Units (RSUs)

Direct
M · Option Exercise
Converts to

Common Stock

37.50K shares

Shares

37.50K

Strike price

Held after

37.50K

Exercisable

4/15/2026
MARMUREK ERIC S — Insider Transaction (Form 4) Filed Apr 17, 2026 | Finecho