Ribbon Communications RBBN Insider Ownership

NASDAQ RBBN
$1.99 +0.00 (+0.00%)
At close: Sep 4, 2026 · 4:00 PM EDT

Insider Holdings by Owner

85.83Mn Shares

Insider Ownership Statistics

as of 31 Mar, 2025
Insider Ownership
0.118%
▼-0.049% pp QoQ
Shares Held by Insiders
207.48K
filed for Mar 2025
▼-28.84% QoQ
Shares Outstanding
176.62Mn
176,620,000 shares
Direct Holdings
207.48K
Indirect: 0
Net Shares Traded (QoQ)
-84.08K
net selling in Mar 2025
Insiders Holding Shares
19
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Quarter ending 31 Mar, 2025

Ribbon Communications's three largest insider shareholders as of September 05, 2026 are Chase Co Jpmorgan (TenPercentOwner, 52.04Mn shares), Investments Ltd. Swarth (TenPercentOwner, 27.44Mn shares), Investments Ltd. Swarth (TenPercentOwner, 27.44Mn shares).

Form 4 Holdings

Insiders Holding RBBN

Insiders 19
Shares held 85.83Mn
Of outstanding 48.59%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Chase Co Jpmorgan TenPercentOwner 0 52,036,572 52,036,572 60.6% 11 Apr, 2025
2 Investments Ltd. Swarth TenPercentOwner 27,440,739 0 27,440,739 32.0% 03 Apr, 2023
3 Bruce William Mcclelland President Ceo 1,516,164 0 1,516,164 1.8% 13 Feb, 2026
4 Bruns H Grayson Director 840,270 0 840,270 1.0% 15 Jul, 2026
5 Eric S Marmurek Evp, Chief Financial Officer 543,706 0 543,706 0.6% 19 May, 2026
6 Patrick W Macken Evp, Chief Legal Officer 482,146 0 482,146 0.6% 19 May, 2026
7 Miguel A Lopez Evp, Cfo 456,797 0 456,797 0.5% 21 Oct, 2024
8 Sam Bucci Evp Coo 448,811 0 448,811 0.5% 17 Oct, 2025
9 Beatriz V Infante Director 343,224 0 343,224 0.4% 08 Sep, 2025
10 Steven M Bruny Evp Sales, Americas Region 297,359 0 297,359 0.3% 19 Sep, 2022
11 Anthony Scarfo Evp Gm, Cloud Edge Bu 252,431 0 252,431 0.3% 19 Sep, 2022
12 R Stewart Jr Ewing Director 239,891 0 239,891 0.3% 17 Jun, 2026
13 Shaul Shani Director 237,718 0 237,718 0.3% 15 Jul, 2026
14 Tanya Tamone Director 223,300 0 223,300 0.3% 17 Jun, 2026
15 Scott Mair Director 208,138 0 208,138 0.2% 17 Jun, 2026
16 John Raymond Townsend Evp, Chief Financial Officer 93,309 0 93,309 0.1% 17 Apr, 2026
17 Krish A Prabhu Director 58,477 0 58,477 0.1% 27 May, 2022
18 Beer Mariano De Director 56,331 0 56,331 0.1% 16 Jun, 2023
19 Stephen J. Mccaffery Evp, Sales Emea And Apac 50,025 0 50,025 0.1% 19 Sep, 2022

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,705 Insider Transactions

Source SEC Form 4
Latest quarter Mar 2025
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
15 Jul, 2026 Bruns H Grayson Director Acquired A 14,423 — — 840,270 Direct
15 Jul, 2026 Shaul Shani Director Acquired A 11,752 — — 237,718 Direct
16 Jun, 2026 Tanya Tamone Director Acquired M 42,500 — — 223,300 Direct
16 Jun, 2026 Scott Mair Director Acquired M 67,500 — — 208,138 Direct
15 Jun, 2026 Eric S Marmurek Evp, Chief Financial Officer Acquired A 150,000 $0.00 $0 150,000 Direct
16 Jun, 2026 Shaul Shani Director Acquired M 42,500 — — 225,966 Direct
15 Jun, 2026 Sam Bucci Evp, Chief Operating Officer Acquired A 250,000 $0.00 $0 250,000 Direct
16 Jun, 2026 Bruns H Grayson Director Acquired M 42,500 — — 825,847 Direct
15 Jun, 2026 Stephen J. Mccaffery Evp, Global Sales Acquired A 200,000 $0.00 $0 200,000 Direct
16 Jun, 2026 R Stewart Jr Ewing Director Acquired M 42,500 — — 239,891 Direct
15 Jun, 2026 Louis Silver Director Acquired A 63,197 $0.00 $0 63,197 Direct
15 Jun, 2026 Patrick W Macken Evp, Chief Legal Officer Acquired A 162,500 $0.00 $0 162,500 Direct
16 Jun, 2026 Beatriz V Infante Director Acquired M 42,500 — — 385,724 Direct
15 Jun, 2026 Bruns H Grayson Director Acquired A 63,197 $0.00 $0 63,197 Direct
15 Jun, 2026 R Stewart Jr Ewing Director Acquired A 63,197 $0.00 $0 63,197 Direct
15 Jun, 2026 Sam Bucci Evp, Chief Operating Officer Acquired A 150,000 $0.00 $0 150,000 Direct
15 Jun, 2026 Beatriz V Infante Director Acquired A 63,197 $0.00 $0 63,197 Direct
15 Jun, 2026 Eric S Marmurek Evp, Chief Financial Officer Acquired A 90,000 $0.00 $0 90,000 Direct
15 Jun, 2026 Shaul Shani Director Acquired A 63,197 $0.00 $0 63,197 Direct
15 Jun, 2026 Tanya Tamone Director Acquired A 63,197 $0.00 $0 63,197 Direct