Comparable stake leader
PARADIGM CAPITAL MANAGEMENT INC/NY
SEC ownership of Ribbon Communications Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001708055.
Disclosed value leader
JPMORGAN CHASE & CO
Comparable rows
1/50
Latest evidence
31 Oct 2026
- Public ticker
- RBBN on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
PARADIGM CAPITAL MANAGEMENT INC/NY
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
1 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
PARADIGM CAPITAL MANAGEMENT INC/NY
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Oct 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001708055
- Issuer location
- Plano, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Ribbon Communications Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
PARADIGM CAPITAL MANAGEME...
Disclosed value leader
JPMORGAN CHASE & CO
Comparable rows
1/50
Latest evidence
31 Oct 2026
13D/G
13F
3/4/5
Lead comparable stake: 5%
49 rows are not safely comparable across share classes.
13D/G row: PARADIGM CAPITAL MANAGEMENT INC/NY
Showing 1-8 of 50 holder rows.
Quick read
PARADIGM CAPITAL MANAGEMENT INC/NY leads the comparable SEC ownership view at 5%.
1 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens PARADIGM CAPITAL MANAGEMENT INC/NY's linked filing trail.
Comparable ownership
Top 1
PARADIGM CAPITAL MANAGEMENT INC/NY
5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PARADIGM CAPITAL MANAGEMENT INC/NY |
13D/G
13F
Company
|
5%
Reported 13D/G
· 30 Jun 2025
|
$36,567,476
8,748,200 shares
|
$0 | 30 Jun 2025 |
| JPMORGAN CHASE & CO |
3/4/5
10%+ Owner
|
—
denominator unverified
|
$190,974,219
52,036,572 shares
|
— | 09 Apr 2025 |
| Swarth Investments Ltd. |
3/4/5
10%+ Owner
|
—
mixed-class rows
|
—
446,645 shares
mixed-class rows
|
— | 30 Mar 2023 |
| Neuberger Berman Group LLC |
13F
Company
|
—
denominator unverified
|
$25,638,600
16,054,845 shares
|
— | 30 Sep 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
—
denominator unverified
|
$9,946,360
5,651,021 shares
|
— | 30 Sep 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$6,934,983
3,940,331 shares
|
— | 30 Sep 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$6,280,711
3,568,586 shares
|
— | 30 Sep 2026 |
| ROYCE & ASSOCIATES LP |
13F
Company
|
—
denominator unverified
|
$5,570,368
3,164,982 shares
|
— | 30 Sep 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$170,547.
Buys
$170,547
Insiders: 1
Sells
$0
Insiders: 0
Net
+$170,547
Shares: +97,000
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 97,000
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 60,000 | 0 | $96,240 | $0 | +$96,240 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 37,000 | 0 | $74,307 | $0 | +$74,307 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 21 reporting-owner rows connected to Ribbon Communications Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
21
Largest Forms 3/4/5 holder
JPMORGAN CHASE & CO
Net 12M change
+$170.55K
Full value: +$170,547 · USD · 12-month changeLatest report
31 Oct 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| JPMORGAN CHASE & CO | 10%+ Owner | $190,974,219 | Filing P/S | 09 Apr 2025 | ||
| Bruce William McClelland | President & CEO, Director | $5,130,613 | +$170,547 | +3.4% | Mixed | 30 Oct 2026 |
| Miguel A. Lopez | Evp, Cfo | $1,740,817 | Mixed | 17 Oct 2024 | ||
| Sam Bucci | EVP, Chief Operating Officer | $1,546,162 | Mixed | 15 Jun 2026 | ||
| Bruns H. Grayson | Director | $1,512,624 | Median | 15 Oct 2026 | ||
| Patrick W. Macken | EVP, Chief Legal Officer | $1,242,716 | Mixed | 15 Jun 2026 | ||
| Eric S. Marmurek | EVP, Chief Financial Officer | $1,067,586 | Mixed | 15 Oct 2026 | ||
| Steven M. Bruny | EVP Sales, Americas Region | $903,879 | Mixed | 15 Sep 2022 | ||
| Beatriz Infante V | Director | $817,734 | Mixed | 15 Jun 2026 | ||
| Anthony Scarfo | EVP & GM, Cloud & Edge BU | $776,283 | Mixed | 15 Sep 2022 | ||
| Shaul Shani | Director | $771,853 | Median | 15 Oct 2026 | ||
| R. Stewart Ewing Jr. | Director | $508,568 | Mixed | 15 Jun 2026 | ||
| Tanya Tamone | Director | $473,396 | Mixed | 15 Jun 2026 | ||
| Scott Mair | Director | $441,252 | Mixed | 15 Jun 2026 | ||
| Stephen J. McCaffery | EVP, Global Sales | $287,805 | Median | 31 Oct 2026 | ||
| John Raymond Townsend | EVP, Chief Financial Officer | $197,899 | Mixed | 15 Apr 2026 | ||
| Krish A. Prabhu | Director | $166,075 | Mixed | 25 May 2022 | ||
| Mariano de Beer | Director | $159,980 | Mixed | 15 Jun 2023 | ||
| Dan Redington | EVP, Global Sales | $148,331 | Mixed | 04 Sep 2025 | ||
| Louis Silver | Director | Mixed | 15 Jun 2026 |
Recent insider transactions for Ribbon Communications Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Stephen J. McCaffery | RBBN | Common Stock | Tax liability | -38.9% | -67,683 | 106,282 | 31 Oct 2026 | Direct | ||
| Stephen J. McCaffery | RBBN | Common Stock | Options Exercise | 204.9% | 144,009 | 214,288 | 31 Oct 2026 | Direct | ||
| Stephen J. McCaffery | RBBN | RSUs | Options Exercise | -25% | -108,006 | 324,021 | 31 Oct 2026 | Direct | ||
| Stephen J. McCaffery | RBBN | Restructed Stock Unites (RSUs) | Options Exercise | -33.3% | -36,003 | 72,003 | 31 Oct 2026 | Direct | ||
| Bruce William McClelland | RBBN | Common Stock | Purchase | 2.06% | $96,240 | $1.60 | 60,000 | 2,969,454 | 30 Oct 2026 | Direct |
| Eric S. Marmurek | RBBN | Common Stock | Tax liability | -2.54% | -14,756 | 566,450 | 15 Oct 2026 | Direct | ||
| Eric S. Marmurek | RBBN | Common Stock | Options Exercise | 6.9% | 37,500 | 581,206 | 15 Oct 2026 | Direct | ||
| Eric S. Marmurek | RBBN | Restricted Stock Units (RSUs) | Options Exercise | -100% | -37,500 | 0 | 15 Oct 2026 | Direct | ||
| Bruns H. Grayson | RBBN | Common Stock | Award | 2.28% | 19,176 | 859,446 | 15 Oct 2026 | Direct | ||
| Shaul Shani | RBBN | Common Stock | Options Exercise | 73.1% | 185,210 | 438,553 | 15 Oct 2026 | Direct | ||
| Shaul Shani | RBBN | Common Stock | Award | 6.57% | 15,625 | 253,343 | 15 Oct 2026 | Direct | ||
| Shaul Shani | RBBN | Restricted Stock Units (RSUs) | Options Exercise | -100% | -185,210 | 0 | 15 Oct 2026 | Direct | ||
| Bruns H. Grayson | RBBN | Common Stock | Award | 1.75% | 14,423 | 840,270 | 15 Jul 2026 | Direct | ||
| Shaul Shani | RBBN | Common Stock | Award | 5.2% | 11,752 | 237,718 | 15 Jul 2026 | Direct | ||
| Tanya Tamone | RBBN | Common Stock | Options Exercise | 23.5% | 42,500 | 223,300 | 16 Jun 2026 | Direct | ||
| Tanya Tamone | RBBN | RSUs | Options Exercise | -100% | -42,500 | 0 | 16 Jun 2026 | Direct | ||
| Scott Mair | RBBN | Common Stock | Options Exercise | 48% | 67,500 | 208,138 | 16 Jun 2026 | Direct | ||
| Scott Mair | RBBN | RSUs | Options Exercise | -100% | -67,500 | 0 | 16 Jun 2026 | Direct | ||
| Shaul Shani | RBBN | Common Stock | Options Exercise | 23.2% | 42,500 | 225,966 | 16 Jun 2026 | Direct | ||
| Shaul Shani | RBBN | RSUs | Options Exercise | -100% | -42,500 | 0 | 16 Jun 2026 | Direct | ||
| Beatriz Infante V | RBBN | Common Stock | Options Exercise | 12.4% | 42,500 | 385,724 | 16 Jun 2026 | Direct | ||
| Beatriz Infante V | RBBN | RSUs | Options Exercise | -100% | -42,500 | 0 | 16 Jun 2026 | Direct | ||
| Bruns H. Grayson | RBBN | Common Stock | Options Exercise | 5.43% | 42,500 | 825,847 | 16 Jun 2026 | Direct | ||
| Bruns H. Grayson | RBBN | RSUs | Options Exercise | -100% | -42,500 | 0 | 16 Jun 2026 | Direct | ||
| R. Stewart Ewing Jr. | RBBN | Common Stock | Options Exercise | 21.5% | 42,500 | 239,891 | 16 Jun 2026 | Direct | ||
| R. Stewart Ewing Jr. | RBBN | RSUs | Options Exercise | -100% | -42,500 | 0 | 16 Jun 2026 | Direct | ||
| Sam Bucci | RBBN | PSUs | Award | 100,000 | 100,000 | 15 Jun 2026 | Direct | |||
| Sam Bucci | RBBN | Performance-Based RSUs (PSUs) | Award | 150,000 | 150,000 | 15 Jun 2026 | Direct | |||
| Sam Bucci | RBBN | Restructed Stock Unites (RSUs) | Award | 250,000 | 250,000 | 15 Jun 2026 | Direct | |||
| Stephen J. McCaffery | RBBN | PSUs | Award | 80,000 | 80,000 | 15 Jun 2026 | Direct | |||
| Stephen J. McCaffery | RBBN | Performance-Based RSUs (PSUs) | Award | 120,000 | 120,000 | 15 Jun 2026 | Direct | |||
| Stephen J. McCaffery | RBBN | Restructed Stock Unites (RSUs) | Award | 200,000 | 200,000 | 15 Jun 2026 | Direct | |||
| Eric S. Marmurek | RBBN | PSUs | Award | 60,000 | 60,000 | 15 Jun 2026 | Direct | |||
| Eric S. Marmurek | RBBN | Performance-Based RSUs (PSUs) | Award | 90,000 | 90,000 | 15 Jun 2026 | Direct | |||
| Eric S. Marmurek | RBBN | Restructed Stock Unites (RSUs) | Award | 150,000 | 150,000 | 15 Jun 2026 | Direct | |||
| Patrick W. Macken | RBBN | PSUs | Award | 65,000 | 65,000 | 15 Jun 2026 | Direct | |||
| Patrick W. Macken | RBBN | Performance-Based RSUs (PSUs) | Award | 97,500 | 97,500 | 15 Jun 2026 | Direct | |||
| Patrick W. Macken | RBBN | Restructed Stock Unites (RSUs) | Award | 162,500 | 162,500 | 15 Jun 2026 | Direct | |||
| Tanya Tamone | RBBN | Restricted Stock Units (RSUs) | Award | 63,197 | 63,197 | 15 Jun 2026 | Direct | |||
| Louis Silver | RBBN | Restricted Stock Units (RSUs) | Award | 63,197 | 63,197 | 15 Jun 2026 | Direct | |||
| Scott Mair | RBBN | Restricted Stock Units (RSUs) | Award | 63,197 | 63,197 | 15 Jun 2026 | Direct | |||
| Shaul Shani | RBBN | Restricted Stock Units (RSUs) | Award | 63,197 | 63,197 | 15 Jun 2026 | Direct | |||
| Beatriz Infante V | RBBN | Restricted Stock Units (RSUs) | Award | 63,197 | 63,197 | 15 Jun 2026 | Direct | |||
| Bruns H. Grayson | RBBN | Restricted Stock Units (RSUs) | Award | 63,197 | 63,197 | 15 Jun 2026 | Direct | |||
| R. Stewart Ewing Jr. | RBBN | Restricted Stock Units (RSUs) | Award | 63,197 | 63,197 | 15 Jun 2026 | Direct | |||
| Patrick W. Macken | RBBN | Common Stock | Tax liability | -12.2% | -59,239 | 427,498 | 15 May 2026 | Direct | ||
| Patrick W. Macken | RBBN | Common Stock | Options Exercise | 35.2% | 131,789 | 506,143 | 15 May 2026 | Direct | ||
| Patrick W. Macken | RBBN | RSUs | Options Exercise | -68.8% | -98,999 | 44,831 | 15 May 2026 | Direct | ||
| Patrick W. Macken | RBBN | PSUs | Options Exercise | -100% | -32,790 | 0 | 15 May 2026 | Direct | ||
| Sam Bucci | RBBN | Common Stock | Tax liability | -14.8% | -93,492 | 536,035 | 15 May 2026 | Direct |
* marks a reported price that did not pass the local price check.