Ribbon Communications Inc.
RBBNNasdaqTechnology · Services-Computer Integrated Systems Design · DE · SEC filings ↗ · Compare ⊕
View price & chart on Yahoo Finance ↗Financials
SEC XBRL · annual| FY25 | FY24 | FY23 | FY22 | FY21 | FY20 | |
|---|---|---|---|---|---|---|
| Revenue | $844.6M | $833.9M | $826.3M | $819.8M | $845.0M | $843.8M |
| Operating income | −$3.3M | $16.9M | −$24.3M | −$39.1M | −$117.8M | $1.7M |
| Net income | $39.6M | −$54.2M | −$66.2M | −$70.0M | −$177.2M | $88.6M |
| Total assets | $1.21B | $1.16B | $1.14B | $1.26B | $1.35B | $1.55B |
| Total liabilities | $763.3M | $757.9M | $691.4M | $737.1M | $820.6M | $860.4M |
| Equity | $449.0M | $404.6M | $452.8M | $518.4M | $527.2M | $686.9M |
| EPS (diluted) | $0.22 | $-0.31 | $-0.39 | $-0.47 | $-1.20 | $0.61 |
| Shares out. | 175.7M | 172.5M | 169.2M | 149.0M | 145.6M | 111.3M |
Reported figures from the company's SEC filings (XBRL). Blank where a line item isn't cleanly tagged — never estimated.
Key ratios
from filings · FY2025- Operating margin
- −0.4%
- Net margin
- 4.7%
- Return on equity
- 8.8%
- Return on assets
- 3.3%
- Return on capital (ROCE)
- −0.4%
- Liabilities / assets
- 63.0%
- Debt / equity
- 1.70×
- Book value / share
- $2.56
- Revenue growth (YoY)
- 1.3%
- Net income growth (YoY)
- —
Computed from the company's own SEC figures — no market price, so these are facts, not a valuation. Book value per share is reported equity ÷ shares; it is not the stock price.
Financial health
forensic scores · FY2025- Altman Z″ (distress)
- -2.78distress
- Accruals / assets
- −1.0%clean
- Piotroski F-Score
- 6/9mixed
Altman Z″is a textbook bankruptcy-distress score from book values only (>2.6 safe · 1.1–2.6 grey · <1.1 distress). Accruals = (net income − operating cash flow) ÷ assets; persistently high accruals are an earnings-quality red flag. Beneish M-Scoreis an eight-ratio screen comparing this year with last (M > −1.78 = elevated manipulation-risk screen, not proof). Piotroski F-Scorecounts how many of nine fundamental-health checks pass (shown as passed / applicable; we use operating margin and total liabilities as documented proxies where the exact input isn't XBRL-tagged). Computed from SEC filings — descriptive factors, not advice or a forecast.
Quality score
EDS ScoreOur own multi-factor score from free SEC data — profitability, growth, financial strength, earnings quality, and event/ownership catalysts. No market price and no licensed model: each axis is the share of source-backed checks it passes. Descriptive factors, not advice or a forecast.
Signs
● 2 severe● 1 warning● 3 good- Altman Z″ in the distress zone
- Filed a late-filing notice (Form NT) — missed an SEC deadline
- Operating losses (negative operating margin)
- Revenue is growing year-over-year
- Positive operating cash flow
- Clean earnings (low accruals)
Derived from the company's own SEC figures (fundamentals, forensic scores, filing discipline) — descriptive factors, not advice or a forecast.
Risk flags
late SEC filings- NT 10-Qmissed a reporting deadline ↗May 13, 2024
- NT 10-Kmissed a reporting deadline ↗Mar 16, 2023
A Form NT means the company notified the SEC it would file a periodic report late — often an accounting, audit or liquidity warning sign. Also search SEC enforcement actions for this company.
5%+ owners
SEC Schedule 13D / 13G · last 3 yrs- Paradigm Capital Management Inc/NyPassive (13G)Aug 14, 2025
Holders who disclosed a 5%+ stake. 13D signals intent to influence or control; 13G is a passive holding. Latest filing per holder — open it for the exact stake.
Insider transactions
SEC Form 4 · most recent| Insider | Date | Type | Shares | Price |
|---|---|---|---|---|
| Macken Patrick WOfficer — EVP, Chief Legal Officer | Apr 17, 2026 | Option exercise | 20,652 | — |
| Bucci SamOfficer — EVP, Chief Operating Officer | Apr 17, 2026 | Option exercise | 25,815 | — |
| Marmurek Eric SOfficer — EVP, Chief Financial Officer | Apr 17, 2026 | Option exercise | 48,328 | — |
| Mcclelland Bruce WilliamOfficer — Chief Executive Officer | Apr 17, 2026 | Option exercise | 34,420 | — |
| Townsend John RaymondOfficer — EVP, Chief Financial Officer | Apr 15, 2026 | Option exercise | 25,641 | — |
| Grayson Bruns HDirector | Apr 15, 2026 | Grant | 15,919 | — |
| Marmurek Eric SOfficer — SVP, Deputy CFO and CAO | Apr 15, 2026 | Option exercise | 37,500 | — |
| Shani ShaulDirector | Apr 15, 2026 | Grant | 12,971 | — |
| Mcclelland Bruce WilliamOfficer — President & CEO | Feb 10, 2026 | Buy | 12,000 | $2.06 |
| Shani ShaulDirector | Jan 15, 2026 | Grant | 9,548 | — |
| Grayson Bruns HDirector | Jan 15, 2026 | Grant | 11,718 | — |
Headline trade per Form 4 (officers, directors, 10%+ owners). Buy/sell read from the filing's structured data — blank where a field isn't cleanly tagged.
Short interest
FINRA · bi-monthly| Settlement | Shares short | Days to cover | Δ vs prior |
|---|---|---|---|
| May 15, 2026 | 3.5M | 5.2 | +3.5% |
| Apr 30, 2026 | 3.4M | 3.0 | +7.3% |
| Apr 15, 2026 | 3.2M | 3.1 | +1.3% |
| Mar 31, 2026 | 3.2M | 5.9 | +4.9% |
| Mar 13, 2026 | 3.0M | 3.9 | -10.8% |
Shares sold short as reported to FINRA. Days-to-cover = short shares ÷ average daily volume — higher means more potential squeeze pressure.
Material events
SEC Form 8-K · most recent- Results of operations · Director / officer changeApr 28, 2026
- Director / officer changeApr 15, 2026
- Results of operationsFeb 5, 2026
- Results of operationsOct 22, 2025
- Director / officer changeAug 29, 2025
- Results of operationsJul 23, 2025
- Director / officer change · Amended charter or bylaws · Shareholder voteMay 30, 2025
- Results of operationsApr 29, 2025
Events the company reported on Form 8-K, labelled by the SEC item code it filed under — its own classification, not our interpretation.
Recent SEC filings
All filings ↗- SDFORM SDMay 29, 2026
- 4STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIESMay 19, 2026
- 4STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIESMay 19, 2026
- 4STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIESMay 19, 2026
- 4STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIESMay 19, 2026
- 10-QMay 6, 2026
- 8-KFORM 8-KApr 28, 2026
- 4STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIESApr 17, 2026
- 4STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIESApr 17, 2026
- 4STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIESApr 17, 2026
- 4STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIESApr 17, 2026
- ARSApr 17, 2026
- DEF 14AApr 17, 2026
- 3INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIESApr 15, 2026
- 8-KFORM 8-KApr 15, 2026
Event-driven situations (1)
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