RBBNNasdaqServices-Computer Integrated Systems DesignFiscal year ends December 31
Ribbon Communications Inc.
Financials through Q4 FY2025, quarter ended Dec 31, 2025Last filing: 10-Q on Jul 31, 2026
$1.51+0.19 (+14.39%)
Close on Oct 19, 2026
- Market cap
- –
- P/E (TTM)
- 6.9
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
71.8%
128M of 179M shares
Institutional holders
160
23 new, 12 sold out
Net institutional buying
-1M
In Q2 2026
Insider trades, 12 months
3 buys · 0 sales
Net bought $74.35K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Paradigm Capital Management Inc/Ny | 8,748,200 | 5.00% | 13G (passive) amendment | Jun 30, 2025 |
| / Neuberger Berman Group LLC | 17,502,066 | 10.19% | 13G (passive) amendment | Jan 31, 2024 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of RBBN | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| JPMorgan Chase & Co | 52,042,936 | 29.10% | $115.54M | −100 | 0.01% |
| Neuberger Berman Group LLC | 18,311,073 | 10.24% | $38.67M | +949,085 | 0.03% |
| BlackRock, Inc. | 7,146,590 | 4.00% | $16.72M | +422,583 | 0.00% |
| Dimensional Fund Advisors LP | 6,286,323 | 3.52% | $14.71M | −64,787 | 0.00% |
| Royce & Associates LP | 5,090,927 | 2.85% | $11.91M | +211,186 | 0.10% |
| Vanguard Capital Management LLC | 3,925,626 | 2.20% | $9.19M | −290,833 | 0.00% |
| Vanguard Portfolio Management LLC | 3,513,067 | 1.96% | $8.22M | +177,402 | 0.00% |
| Paradigm Capital Management Inc/Ny | 3,036,398 | 1.70% | $7.11M | −4,999,937 | 0.19% |
| Geode Capital Management, LLC | 2,485,064 | 1.39% | $5.82M | +70,504 | 0.00% |
| Connor, Clark & Lunn Investment Management Ltd. | 2,213,134 | 1.24% | $5.18M | +123,412 | 0.01% |
| State Street Corp | 1,930,153 | 1.08% | $4.52M | +20,126 | 0.00% |
| D. E. Shaw & Co., Inc. | 1,790,375 | 1.00% | $4.19M | +251,903 | 0.00% |
| Acadian Asset Management LLC | 1,768,227 | 0.99% | $4.13K | +329,737 | 0.00% |
| Aqr Capital Management LLC | 1,409,795 | 0.79% | $3.30M | +152,448 | 0.00% |
| First Wilshire Securities Management Inc | 1,404,493 | 0.79% | $3.29M | −2,685 | 0.68% |
| Citadel Advisors LLC | 1,241,200 | 0.69% | $2.90M | +666,211 | 0.00% |
| Arrowstreet Capital, Limited Partnership | 1,215,230 | 0.68% | $2.84M | −1,646 | 0.00% |
| Marshall Wace, Llp | 814,132 | 0.46% | $1.91M | +44,345 | 0.00% |
| Charles Schwab Investment Management Inc | 800,159 | 0.45% | $1.87M | +91,996 | 0.00% |
| Northern Trust Corp | 749,823 | 0.42% | $1.75M | +43,965 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 160 | 128M | 71.8% | 23 / 65 | 42 / 12 | 6M | 7M |
| Q1 2026 | 150 | 129M | 72.3% | 37 / 52 | 43 / 35 | 14M | 7M |
| Q4 2025 | 153 | 130M | 72.5% | 25 / 56 | 52 / 24 | 5M | 55M |
| Q3 2025 | 153 | 180M | 100.0% | 25 / 51 | 44 / 16 | 55M | 3M |
| Q2 2025 | 145 | 128M | 71.6% | 22 / 60 | 34 / 20 | 4M | 3M |
| Q1 2025 | 144 | 128M | 71.3% | 28 / 43 | 49 / 16 | 5M | 3M |
| Q4 2024 | 133 | 126M | 70.5% | 21 / 49 | 38 / 13 | 4M | 55M |
| Q3 2024 | 126 | 177M | 99.0% | 9 / 45 | 40 / 11 | 10M | 2M |
| Q2 2024 | 129 | 176M | 98.3% | 13 / 49 | 46 / 15 | 3M | 4M |
| Q1 2024 | 132 | 177M | 98.9% | 20 / 41 | 48 / 12 | 7M | 3M |
| Q4 2023 | 125 | 175M | 97.7% | 17 / 45 | 40 / 14 | 57M | 3M |
| Q3 2023 | 122 | 122M | 68.0% | 11 / 44 | 46 / 14 | 4M | 4M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of RBBN | Value | % of fund | As of |
|---|---|---|---|---|---|
| Neuberger Intrinsic Value Fund | 4,179,246 | 2.34% | $12.87M | 0.86% | May 31, 2026 |
| Vanguard Total Stock Market Index Fund | 2,800,400 | 1.57% | $6.55M | 0.00% | Jun 30, 2026 |
| Vanguard Information Technology Index Fund | 2,492,416 | 1.39% | $7.68M | 0.00% | May 31, 2026 |
| iShares Russell 2000 ETF | 2,442,459 | 1.37% | $5.72M | 0.01% | Jun 30, 2026 |
| Royce Small-Cap Opportunity Fund | 1,516,867 | 0.85% | $3.55M | 0.25% | Jun 30, 2026 |
| U.S. Small Cap Value Portfolio | 1,256,777 | 0.70% | $2.69M | 0.01% | Jul 31, 2026 |
| Vanguard Extended Market Index Fund | 1,030,468 | 0.58% | $2.41M | 0.00% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 1,018,555 | 0.57% | $2.18M | 0.01% | Jul 31, 2026 |
| Column Small Cap Select Fund | 892,993 | 0.50% | $2.75M | 0.15% | May 31, 2026 |
| iShares Russell 2000 Value ETF | 888,234 | 0.50% | $2.08M | 0.01% | Jun 30, 2026 |
| U.S. Small Cap Portfolio | 777,218 | 0.43% | $1.66M | 0.01% | Jul 31, 2026 |
| Dimensional US Small Cap Value ETF | 620,402 | 0.35% | $1.33M | 0.02% | Jul 31, 2026 |
| Dimensional U.S. Small Cap ETF | 555,980 | 0.31% | $1.19M | 0.01% | Jul 31, 2026 |
| U.S. Micro Cap Portfolio | 537,371 | 0.30% | $1.15M | 0.01% | Jul 31, 2026 |
| Royce Micro-Cap Fund | 519,069 | 0.29% | $1.21M | 0.28% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Bruce William McClelland | Chief Executive Officer, Director | 1,810,342 | 1.01% | May 19, 2026 |
| Eric S. Marmurek | EVP, Chief Financial Officer | 527,910 | 0.30% | Jun 17, 2026 |
| Stephen J. McCaffery | EVP, Global Sales | 87,200 | 0.05% | Jun 17, 2026 |
| Sam Bucci | EVP, Chief Operating Officer | 599,271 | 0.34% | Jun 17, 2026 |
| Patrick W. Macken | EVP, Chief Legal Officer | 442,186 | 0.25% | Jun 17, 2026 |
| John Raymond Townsend | EVP, Chief Financial Officer | 103,398 | 0.06% | Apr 17, 2026 |
| Dan Redington | EVP, Global Sales | 0 | – | Sep 8, 2025 |
| Shaul Shani | Director | 237,718 | 0.13% | Jul 15, 2026 |
| Bruns H. Grayson | Director | 840,270 | 0.47% | Jul 15, 2026 |
| R. Stewart Ewing Jr | Director | 239,891 | 0.13% | Jun 17, 2026 |
| Scott Mair | Director | 208,138 | 0.12% | Jun 17, 2026 |
| Beatriz V. Infante | Director | 385,724 | 0.22% | Jun 17, 2026 |
| Louis Silver | Director | – | – | Jun 17, 2026 |
| Tanya Tamone | Director | 223,300 | 0.12% | Jun 17, 2026 |
| Chase & Co Jpmorgan | 10% owner | 52,036,572 | 29.10% | Apr 11, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Shaul Shani Director | Jul 15, 2026 | Award | +11,752 | – | – | 237,718 |
| Bruns H. Grayson Director | Jul 15, 2026 | Award | +14,423 | – | – | 840,270 |
| Beatriz V. Infante Director | Jun 16, 2026 | Option exercise | +42,500 | – | – | 385,724 |
| Scott Mair Director | Jun 16, 2026 | Option exercise | +67,500 | – | – | 208,138 |
| Shaul Shani Director | Jun 16, 2026 | Option exercise | +42,500 | – | – | 225,966 |
| Bruns H. Grayson Director | Jun 16, 2026 | Option exercise | +42,500 | – | – | 825,847 |
| Tanya Tamone Director | Jun 16, 2026 | Option exercise | +42,500 | – | – | 223,300 |
| R. Stewart Ewing Jr Director | Jun 16, 2026 | Option exercise | +42,500 | – | – | 239,891 |
| Eric S. Marmurek EVP, Chief Financial Officer | May 15, 2026 | Tax withholding | −12,452 | $2.63 | $32.75K | 527,910 |
| Eric S. Marmurek EVP, Chief Financial Officer | May 15, 2026 | Option exercise | +23,146 | – | – | 517,823 |
| Eric S. Marmurek EVP, Chief Financial Officer | May 15, 2026 | Option exercise | +26,043 | – | – | 553,953 |
| Eric S. Marmurek EVP, Chief Financial Officer | May 15, 2026 | Tax withholding | −9,107 | $2.63 | $23.95K | 508,176 |
| Eric S. Marmurek EVP, Chief Financial Officer | May 15, 2026 | Option exercise | +31,646 | – | – | 540,362 |
| Eric S. Marmurek EVP, Chief Financial Officer | May 15, 2026 | Tax withholding | −10,247 | $2.63 | $26.95K | 543,706 |
| Patrick W. Macken EVP, Chief Legal Officer | May 15, 2026 | Option exercise | +32,790 | – | – | 442,186 |
| Patrick W. Macken EVP, Chief Legal Officer | May 15, 2026 | Tax withholding | −14,688 | $2.63 | $38.63K | 427,498 |
| Patrick W. Macken EVP, Chief Legal Officer | May 15, 2026 | Option exercise | +44,831 | – | – | 472,329 |
| Patrick W. Macken EVP, Chief Legal Officer | May 15, 2026 | Tax withholding | −20,284 | $2.63 | $53.35K | 452,245 |
| Patrick W. Macken EVP, Chief Legal Officer | May 15, 2026 | Tax withholding | −24,267 | $2.63 | $63.82K | 482,146 |
| Patrick W. Macken EVP, Chief Legal Officer | May 15, 2026 | Option exercise | +54,168 | – | – | 506,143 |
| Sam Bucci EVP, Chief Operating Officer | May 15, 2026 | Tax withholding | −44,609 | $2.63 | $117.32K | 599,271 |
| Sam Bucci EVP, Chief Operating Officer | May 15, 2026 | Option exercise | +83,335 | – | – | 643,880 |
| Sam Bucci EVP, Chief Operating Officer | May 15, 2026 | Option exercise | +52,743 | – | – | 588,778 |
| Sam Bucci EVP, Chief Operating Officer | May 15, 2026 | Option exercise | +38,578 | – | – | 556,685 |
| Sam Bucci EVP, Chief Operating Officer | May 15, 2026 | Tax withholding | −20,650 | $2.63 | $54.31K | 536,035 |
| Sam Bucci EVP, Chief Operating Officer | May 15, 2026 | Tax withholding | −28,233 | $2.63 | $74.25K | 560,545 |
| Bruce William McClelland Chief Executive Officer, Director | May 15, 2026 | Option exercise | +173,593 | – | – | 1,810,342 |
| Bruce William McClelland Chief Executive Officer, Director | May 15, 2026 | Tax withholding | −68,308 | $2.63 | $179.65K | 1,742,034 |
| Bruce William McClelland Chief Executive Officer, Director | May 15, 2026 | Option exercise | +237,342 | – | – | 1,979,376 |
| Bruce William McClelland Chief Executive Officer, Director | May 15, 2026 | Tax withholding | −93,394 | $2.63 | $245.63K | 1,885,982 |
| Bruce William McClelland Chief Executive Officer, Director | May 15, 2026 | Option exercise | +125,003 | – | – | 2,010,985 |
| Bruce William McClelland Chief Executive Officer, Director | May 15, 2026 | Tax withholding | −49,188 | $2.63 | $129.36K | 1,961,797 |
| Bruce William McClelland Chief Executive Officer, Director | May 15, 2026 | Option exercise | +1,562,500 | – | – | 3,524,297 |
| Bruce William McClelland Chief Executive Officer, Director | May 15, 2026 | Tax withholding | −614,843 | $2.63 | $1.62M | 2,909,454 |
| Eric S. Marmurek EVP, Chief Financial Officer | Apr 17, 2026 | Tax withholding | −19,107 | $2.71 | $51.78K | 479,118 |
| Eric S. Marmurek EVP, Chief Financial Officer | Apr 17, 2026 | Option exercise | +25,651 | – | – | 504,769 |
| Eric S. Marmurek EVP, Chief Financial Officer | Apr 17, 2026 | Tax withholding | −10,092 | $2.71 | $27.35K | 494,677 |
| Eric S. Marmurek EVP, Chief Financial Officer | Apr 17, 2026 | Option exercise | +48,328 | – | – | 498,135 |
| Patrick W. Macken EVP, Chief Legal Officer | Apr 17, 2026 | Tax withholding | −28,868 | $2.71 | $78.23K | 409,396 |
| Patrick W. Macken EVP, Chief Legal Officer | Apr 17, 2026 | Option exercise | +64,438 | – | – | 438,264 |
| Patrick W. Macken EVP, Chief Legal Officer | Apr 17, 2026 | Tax withholding | −15,322 | $2.71 | $41.52K | 373,826 |
| Patrick W. Macken EVP, Chief Legal Officer | Apr 17, 2026 | Option exercise | +34,202 | – | – | 389,148 |
| Patrick W. Macken EVP, Chief Legal Officer | Apr 17, 2026 | Tax withholding | −9,252 | $2.71 | $25.07K | 354,946 |
| Patrick W. Macken EVP, Chief Legal Officer | Apr 17, 2026 | Option exercise | +20,652 | – | – | 364,198 |
| Sam Bucci EVP, Chief Operating Officer | Apr 17, 2026 | Tax withholding | −13,818 | $2.71 | $37.45K | 460,808 |
| Sam Bucci EVP, Chief Operating Officer | Apr 17, 2026 | Tax withholding | −43,116 | $2.71 | $116.84K | 518,107 |
| Sam Bucci EVP, Chief Operating Officer | Apr 17, 2026 | Option exercise | +80,546 | – | – | 561,223 |
| Sam Bucci EVP, Chief Operating Officer | Apr 17, 2026 | Tax withholding | −22,884 | $2.71 | $62.02K | 480,677 |
| Sam Bucci EVP, Chief Operating Officer | Apr 17, 2026 | Option exercise | +42,753 | – | – | 503,561 |
| Sam Bucci EVP, Chief Operating Officer | Apr 17, 2026 | Option exercise | +25,815 | – | – | 474,626 |
| Bruce William McClelland Chief Executive Officer, Director | Apr 17, 2026 | Option exercise | +57,002 | – | – | 1,594,042 |
| Bruce William McClelland Chief Executive Officer, Director | Apr 17, 2026 | Option exercise | +34,420 | – | – | 1,550,584 |
| Bruce William McClelland Chief Executive Officer, Director | Apr 17, 2026 | Tax withholding | −13,544 | $2.71 | $36.70K | 1,537,040 |
| Bruce William McClelland Chief Executive Officer, Director | Apr 17, 2026 | Tax withholding | −22,429 | $2.71 | $60.78K | 1,571,613 |
| Bruce William McClelland Chief Executive Officer, Director | Apr 17, 2026 | Option exercise | +107,395 | – | – | 1,679,008 |
| Bruce William McClelland Chief Executive Officer, Director | Apr 17, 2026 | Tax withholding | −42,259 | $2.71 | $114.52K | 1,636,749 |
| Shaul Shani Director | Apr 15, 2026 | Award | +12,971 | – | – | 183,466 |
| Eric S. Marmurek SVP, Deputy CFO and CAO | Apr 15, 2026 | Option exercise | +37,500 | – | – | 464,563 |
| Eric S. Marmurek SVP, Deputy CFO and CAO | Apr 15, 2026 | Tax withholding | −14,756 | $2.48 | $36.59K | 449,807 |
| John Raymond Townsend EVP, Chief Financial Officer | Apr 15, 2026 | Option exercise | +25,641 | – | – | 103,398 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Redington Daniel Officer | Sep 8, 2025 | 14,176 | $56.99K | Sep 8, 2025 | Performance Shares |
| Infante Beatriz Director | Sep 8, 2025 | 8,692 | $34.61K | Sep 5, 2025 | Restricted Stock |
| Redington Daniel Officer | Sep 5, 2025 | 155,434 | $626.35K | Sep 5, 2025 | Restricted Stock |
| Redington Daniel Officer | Sep 4, 2025 | 20,000 | $83.25K | Sep 4, 2025 | Restricted Stock |
| Beatriz V. Infante Director | Sep 13, 2024 | 5,790 | $17.60K | Sep 13, 2024 | RESTRICTED STOCK |
| Patrick W. Macken Officer | Feb 27, 2024 | 42,094 | $134.28K | Feb 27, 2024 | Stock Award |
| Dan Redington Officer | Feb 21, 2024 | 66,000 | $211.20K | Feb 21, 2024 | RESTRICTED STOCK |