Marmurek Eric S

Insider CIK 1720721 · RBBN SVP, Finance & CAO

Track record PRO

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Track record

See how this insider's past purchases performed 30 and 90 days later, and a conviction score on each buy.

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Trades across companies

Ticker	Code	Trade	Filed	Shares	Price	Value	Owned after
RBBN Ribbon Communications Inc.	M Exercise deriv	2026-10-15	2026-10-19	37,500	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2026-10-15	2026-10-19	14,756	$1.46	$21.5K	566,450	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2026-10-15	2026-10-19	37,500	—	—	581,206	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2026-06-15	2026-06-17	90,000	—	$0	90,000	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2026-06-15	2026-06-17	150,000	—	$0	150,000	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2026-06-15	2026-06-17	60,000	—	$0	60,000	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2026-05-15	2026-05-19	31,646	—	$0	31,645	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2026-05-15	2026-05-19	26,043	—	$0	52,082	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2026-05-15	2026-05-19	23,146	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2026-05-15	2026-05-19	12,452	$2.63	$32.7K	527,910	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2026-05-15	2026-05-19	23,146	—	$0	517,823	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2026-05-15	2026-05-19	26,043	—	$0	553,953	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2026-05-15	2026-05-19	9,107	$2.63	$24.0K	508,176	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2026-05-15	2026-05-19	31,646	—	$0	540,362	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2026-05-15	2026-05-19	10,247	$2.63	$26.9K	543,706	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2026-04-17	2026-05-19	48,328	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2026-04-17	2026-05-19	25,651	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2026-04-17	2026-05-19	19,107	$2.71	$51.8K	479,118	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2026-04-17	2026-05-19	25,651	—	$0	504,769	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2026-04-17	2026-05-19	10,092	$2.71	$27.3K	494,677	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2026-04-17	2026-05-19	48,328	—	$0	498,135	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2026-04-15	2026-04-17	37,500	—	$0	37,500	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2026-04-15	2026-04-17	37,500	—	$0	464,563	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2026-04-15	2026-04-17	14,756	$2.48	$36.6K	449,807	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2025-12-15	2025-12-16	169,721	—	$0	169,721	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2025-10-15	2025-10-17	75,000	—	$0	75,000	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2025-10-15	2025-10-17	29,512	$3.81	$112.4K	427,063	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2025-10-15	2025-10-17	75,000	—	$0	456,575	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2025-05-16	2025-05-19	31,645	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2025-05-16	2025-05-19	12,452	$3.62	$45.1K	381,575	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2025-05-16	2025-05-19	31,645	—	$0	394,027	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2025-05-15	2025-05-19	36,392	—	$0	36,392	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2025-05-15	2025-05-19	31,250	—	$0	31,250	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2025-05-15	2025-05-19	46,875	—	$0	46,875	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2025-05-15	2025-05-19	63,291	—	$0	63,291	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2025-05-15	2025-05-19	78,125	—	$0	78,125	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2025-04-18	2025-04-22	13,354	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2025-04-18	2025-04-22	13,354	—	$0	367,636	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2025-04-18	2025-04-22	5,254	$3.58	$18.8K	362,382	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2025-04-17	2025-04-22	23,234	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2025-04-17	2025-04-22	23,234	—	$0	363,424	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2025-04-17	2025-04-22	9,142	$3.53	$32.3K	354,282	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2025-03-15	2025-03-18	32,154	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2025-03-15	2025-03-18	16,399	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2025-03-15	2025-03-18	16,399	—	$0	328,289	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2025-03-15	2025-03-18	7,321	$3.95	$28.9K	320,968	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2025-03-15	2025-03-18	32,154	—	$0	353,122	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2024-10-18	2024-10-21	13,355	—	$0	13,354	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2024-10-18	2024-10-21	5,255	$3.56	$18.7K	311,890	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2024-10-18	2024-10-21	13,355	—	$0	317,145	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2024-10-17	2024-10-21	23,234	—	$0	23,234	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2024-10-17	2024-10-21	9,142	$3.38	$30.9K	303,790	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2024-10-17	2024-10-21	23,234	—	$0	312,932	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2024-10-15	2024-10-17	150,000	—	$0	150,000	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2024-05-15	2024-05-17	43,670	—	$0	43,670	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2024-05-15	2024-05-17	29,114	—	$0	29,114	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2024-05-15	2024-05-17	31,645	—	$0	31,645	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2024-04-18	2024-04-19	13,354	—	$0	26,709	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2024-04-18	2024-04-19	13,354	—	$0	294,593	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2024-04-18	2024-04-19	4,895	$2.57	$12.6K	289,698	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2024-04-17	2024-04-19	46,469	—	$0	46,468	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2024-04-17	2024-04-19	46,469	—	$0	298,308	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2024-04-17	2024-04-19	17,069	$2.61	$44.6K	281,239	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2024-03-15	2025-03-18	12,932	$3.95	$51.1K	340,190	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2024-03-15	2024-03-18	4,116	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2024-03-15	2024-03-18	1,581	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2024-03-15	2024-03-18	1,554	$2.83	$4.4K	251,839	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2024-03-15	2024-03-18	4,116	—	$0	251,812	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2024-03-15	2024-03-18	1,581	—	$0	253,393	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2024-01-18	2024-01-19	15,000	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2024-01-18	2024-01-19	15,000	—	$0	252,143	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2024-01-18	2024-01-19	4,447	$2.84	$12.6K	247,696	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2023-10-18	2023-10-23	13,355	—	$0	40,063	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2023-10-18	2023-10-23	3,251	$2.15	$7.0K	237,143	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2023-10-18	2023-10-23	13,355	—	$0	240,394	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2023-09-15	2023-09-19	4,117	—	$0	4,117	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2023-09-15	2023-09-19	1,002	$2.83	$2.8K	227,039	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2023-09-15	2023-09-19	4,117	—	$0	228,041	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2023-06-16	2023-06-20	48,231	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2023-06-16	2023-06-20	11,744	$2.96	$34.8K	223,005	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2023-06-16	2023-06-20	48,231	—	$0	234,749	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2023-04-18	2023-04-19	26,710	—	$0	53,418	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2023-04-18	2023-04-19	26,710	—	$0	193,021	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2023-04-18	2023-04-19	6,503	$2.74	$17.8K	186,518	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2023-04-17	2023-04-19	55,762	—	$0	55,762	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2023-04-17	2023-04-19	37,175	—	$0	37,175	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2023-04-17	2023-04-19	92,937	—	$0	92,937	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2023-03-16	2023-03-17	15,432	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2023-03-16	2023-03-17	15,432	—	$0	170,041	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2023-03-16	2023-03-17	3,730	$3.54	$13.2K	166,311	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2023-03-15	2023-03-17	18,307	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2023-03-15	2023-03-17	4,116	—	$0	8,233	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2023-03-15	2023-03-17	11,442	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2023-03-15	2023-03-17	18,307	—	$0	159,428	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2023-03-15	2023-03-17	11,442	—	$0	144,513	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2023-03-15	2023-03-17	1,220	$3.71	$4.5K	133,071	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2023-03-15	2023-03-17	4,116	—	$0	134,291	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2023-03-15	2023-03-17	4,819	$3.71	$17.9K	154,609	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2023-03-15	2023-03-17	3,392	$3.71	$12.6K	141,121	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2023-01-17	2023-01-19	15,000	—	$0	15,000	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2022-09-16	2022-09-19	15,432	—	$0	15,432	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2022-09-16	2022-09-19	15,432	—	$0	133,932	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2022-09-16	2022-09-19	3,757	$2.95	$11.1K	130,175	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2022-09-15	2022-09-19	4,117	—	$0	12,349	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2022-09-15	2022-09-19	4,117	—	$0	119,502	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2022-09-15	2022-09-19	1,002	$3.10	$3.1K	118,500	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2022-06-15	2022-06-17	32,154	—	$0	32,154	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2022-06-15	2022-06-17	48,231	—	$0	48,231	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2022-06-15	2022-06-17	48,231	—	$0	48,231	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2022-04-18	2022-04-20	80,128	—	$0	80,128	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2022-04-15	2022-04-18	6,056	$3.11	$18.8K	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2022-04-15	2022-04-18	6,056	—	$0	117,778	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2022-04-15	2022-04-18	1,474	$3.11	$4.6K	116,304	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2022-03-16	2022-03-17	15,432	—	$0	30,864	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2022-03-16	2022-03-17	3,663	$2.99	$11.0K	111,772	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2022-03-16	2022-03-17	15,432	—	$0	115,385	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2022-03-15	2022-03-17	11,047	—	$0	0	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2022-03-15	2022-03-17	8,234	—	$0	16,466	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2022-03-15	2022-03-17	8,386	$2.81	$23.6K	99,953	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2022-03-15	2022-03-17	11,047	—	$0	108,339	SEC↗
RBBN Ribbon Communications Inc.	A Award	2022-03-15	2022-03-17	11,301	—	$0	97,292	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2022-03-15	2022-03-17	8,234	—	$0	85,991	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2021-10-15	2021-10-19	6,056	—	$0	6,056	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2021-10-15	2021-10-19	6,056	—	$0	79,231	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2021-10-15	2021-10-19	1,474	$6.35	$9.4K	77,757	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2021-09-16	2021-09-17	15,432	—	$0	46,296	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2021-09-16	2021-09-17	15,432	—	$0	76,932	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2021-09-16	2021-09-17	3,757	$6.28	$23.6K	73,175	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2021-04-15	2021-04-16	6,057	—	$0	12,112	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2021-04-15	2021-04-16	6,057	—	$0	62,974	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2021-04-15	2021-04-16	1,474	$8.45	$12.5K	61,500	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2021-03-16	2021-03-17	30,865	—	$0	61,728	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2021-03-16	2021-03-17	7,482	$8.65	$64.7K	56,917	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2021-03-16	2021-03-17	30,865	—	$0	64,399	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2021-03-15	2021-03-17	14,820	—	$0	14,820	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2021-03-15	2021-03-17	9,880	—	$0	9,880	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2021-03-15	2021-03-17	24,700	—	$0	24,700	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2021-02-26	2021-03-02	9,085	—	$0	11,301	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2021-02-26	2021-03-02	11,442	—	$0	11,442	SEC↗
RBBN Ribbon Communications Inc.	S Sale	2020-12-08	2020-12-10	8,304	$7.19	$59.7K	33,534	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2020-11-16	2020-11-17	1,088	$4.67	$5.1K	41,838	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2020-10-15	2020-10-16	6,056	—	$0	18,169	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2020-10-15	2020-10-16	1,474	$3.92	$5.8K	42,926	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2020-10-15	2020-10-16	6,056	—	$0	44,400	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2020-06-19	2020-06-23	18,307	—	$0	18,307	SEC↗
RBBN Ribbon Communications Inc.	S Sale	2020-05-15	2020-05-19	1,095	$3.24	$3.5K	38,344	SEC↗
RBBN Ribbon Communications Inc.	M Exercise deriv	2020-04-15	2020-04-17	12,113	—	$0	24,225	SEC↗
RBBN Ribbon Communications Inc.	M Exercise	2020-04-15	2020-04-17	12,113	—	$0	42,861	SEC↗
RBBN Ribbon Communications Inc.	S Sale	2020-04-15	2020-04-17	3,422	$2.92	$10.0K	39,439	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2020-03-16	2020-03-18	92,593	—	$0	92,593	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2020-02-28	2020-03-03	2,216	—	$0	2,216	SEC↗
RBBN Ribbon Communications Inc.	S Sale	2019-11-15	2019-11-19	1,102	$2.99	$3.3K	30,748	SEC↗
RBBN Ribbon Communications Inc.	S Sale	2019-05-15	2019-11-19	1,109	$4.85	$5.4K	31,850	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2019-05-15	2019-05-17	1,109	$4.85	$5.4K	68,188	SEC↗
RBBN Ribbon Communications Inc.	A Award deriv	2019-04-15	2019-04-16	36,338	—	$0	36,338	SEC↗
RBBN Ribbon Communications Inc.	A Award	2019-04-15	2019-04-16	36,338	—	$0	69,297	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2019-03-15	2019-03-19	1,834	$5.22	$9.6K	32,959	SEC↗
RBBN Ribbon Communications Inc.	A Award	2019-03-15	2019-03-19	7,823	—	$0	34,793	SEC↗
RBBN Ribbon Communications Inc.	F Tax w/h	2018-11-15	2018-11-19	2,178	$6.12	$13.3K	26,970	SEC↗
SONS Sonus Networks, Inc.	A Award	2017-11-15	2017-11-17	26,833	—	$0	29,148	SEC↗