Insider · CIK 0001720721

Marmurek Eric S

Reports to the SEC for 1 company · PLANO, TX

sec.gov

Transactions

Companies

Filings

CIK

0001720721

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-10-15	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+37.5K sh	—	—	581,206
2026-10-15	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−14.8K sh	$1.46	−$21.5K	566,450
2026-10-15	RBBNRibbon Communications Inc. · Restricted Stock Units (RSUs)M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−37.5K sh	—	—	0
2026-06-15	RBBNRibbon Communications Inc. · Restructed Stock Unites (RSUs)A Award	EVP, Chief Financial Officer	AAward	+150K sh	—	—	150,000
2026-06-15	RBBNRibbon Communications Inc. · Performance-Based RSUs (PSUs)A Award	EVP, Chief Financial Officer	AAward	+90K sh	—	—	90,000
2026-06-15	RBBNRibbon Communications Inc. · PSUsA Award	EVP, Chief Financial Officer	AAward	+60K sh	—	—	60,000
2026-05-15	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+23.1K sh	—	—	517,823
2026-05-15	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−9,107 sh	$2.63	−$24K	508,176
2026-05-15	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+31.6K sh	—	—	540,362
2026-05-15	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−12.5K sh	$2.63	−$32.7K	527,910
2026-05-15	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+26K sh	—	—	553,953
2026-05-15	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−10.2K sh	$2.63	−$26.9K	543,706
2026-05-15	RBBNRibbon Communications Inc. · PSUsM Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−23.1K sh	—	—	0
2026-05-15	RBBNRibbon Communications Inc. · RSUsM Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−26K sh	—	—	52,082
2026-05-15	RBBNRibbon Communications Inc. · RSUsM Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−31.6K sh	—	—	31,645
2026-04-17	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+48.3K sh	—	—	498,135
2026-04-17	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−19.1K sh	$2.71	−$51.8K	479,118
2026-04-17	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+25.7K sh	—	—	504,769
2026-04-17	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−10.1K sh	$2.71	−$27.3K	494,677
2026-04-17	RBBNRibbon Communications Inc. · Performance Share Units (PSUs)M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−25.7K sh	—	—	0
2026-04-17	RBBNRibbon Communications Inc. · PSUsM Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−48.3K sh	—	—	0
2026-04-15	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+37.5K sh	—	—	464,563
2026-04-15	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−14.8K sh	$2.48	−$36.6K	449,807
2026-04-15	RBBNRibbon Communications Inc. · Restricted Stock Units (RSUs)M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−37.5K sh	—	—	37,500
2025-12-15	RBBNRibbon Communications Inc. · Restricted Stock Units (RSUs)A Award	EVP, Chief Financial Officer	AAward	−170K sh	—	—	169,721
2025-10-15	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+75K sh	—	—	456,575
2025-10-15	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−29.5K sh	$3.81	−$112K	427,063
2025-10-15	RBBNRibbon Communications Inc. · Restricted Stock Units (RSUs)M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−75K sh	—	—	75,000
2025-05-16	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+31.6K sh	—	—	394,027
2025-05-16	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−12.5K sh	$3.62	−$45.1K	381,575
2025-05-16	RBBNRibbon Communications Inc. · RSUsM Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−31.6K sh	—	—	0
2025-05-15	RBBNRibbon Communications Inc. · Restricted Stock Units (RSUs)A Award	EVP, Chief Financial Officer	AAward	+78.1K sh	—	—	78,125
2025-05-15	RBBNRibbon Communications Inc. · RSUsA Award	EVP, Chief Financial Officer	AAward	+63.3K sh	—	—	63,291
2025-05-15	RBBNRibbon Communications Inc. · Performance-Based RSUs (PSUs)A Award	EVP, Chief Financial Officer	AAward	+46.9K sh	—	—	46,875
2025-05-15	RBBNRibbon Communications Inc. · PSUsA Award	EVP, Chief Financial Officer	AAward	+31.3K sh	—	—	31,250
2025-05-15	RBBNRibbon Communications Inc. · PSUsA Award	EVP, Chief Financial Officer	AAward	+36.4K sh	—	—	36,392
2025-04-18	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+13.4K sh	—	—	367,636
2025-04-18	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−5,254 sh	$3.58	−$18.8K	362,382
2025-04-18	RBBNRibbon Communications Inc. · RSUsM Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−13.4K sh	—	—	0
2025-04-17	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+23.2K sh	—	—	363,424
2025-04-17	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−9,142 sh	$3.53	−$32.3K	354,282
2025-04-17	RBBNRibbon Communications Inc. · Restricted Stock Units (RSUs)M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−23.2K sh	—	—	0
2025-03-15	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+16.4K sh	—	—	328,289
2025-03-15	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−7,321 sh	$3.95	−$28.9K	320,968
2025-03-15	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+32.2K sh	—	—	353,122
2025-03-15	RBBNRibbon Communications Inc. · Performance-Based Restricted Stock Units (PSUs)M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−16.4K sh	—	—	0
2025-03-15	RBBNRibbon Communications Inc. · PSUsM Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−32.2K sh	—	—	0
2024-10-18	RBBNRibbon Communications Inc.M Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	+13.4K sh	—	—	317,145
2024-10-18	RBBNRibbon Communications Inc.F Tax Payment	EVP, Chief Financial Officer	FTax Payment	−5,255 sh	$3.56	−$18.7K	311,890
2024-10-18	RBBNRibbon Communications Inc. · RSUsM Exercise/Conversion	EVP, Chief Financial Officer	MExercise/Conversion	−13.4K sh	—	—	13,354

Recent filings

Accepted (ET)
Oct 194
Marmurek Eric S0001708055-26-000080
SEC(opens sec.gov)
Jun 174
Marmurek Eric S0001708055-26-000056
SEC(opens sec.gov)
May 194
Marmurek Eric S0001708055-26-000034
SEC(opens sec.gov)

Companies

Ribbon Communications Inc.EVP, Chief Financial OfficerRBBN

Address

6500 CHASE OAKS BLVD. STE. 100

PLANO, TX, 75023