Rubicon Technology, Inc.
RBCNOTCTechnology · Semiconductors & Related Devices · DE · SEC filings ↗ · Compare ⊕
View price & chart on Yahoo Finance ↗Financials
SEC XBRL · annual| FY22 | FY21 | FY20 | FY19 | FY18 | FY17 | |
|---|---|---|---|---|---|---|
| Revenue | $3.6M | $4.1M | $3.6M | $3.5M | $56,000 | $394,000 |
| Operating income | $585,000 | −$464,000 | $530,000 | −$1.3M | $635,000 | −$17.9M |
| Net income | $935,000 | −$730,000 | −$1.1M | −$1.1M | $963,000 | −$17.9M |
| Total assets | $6.0M | $31.0M | $31.2M | $34.8M | $35.8M | $35.0M |
| Total liabilities | $2.8M | $1.6M | $1.3M | — | — | — |
| Equity | $3.2M | $29.4M | $29.9M | $33.2M | $34.6M | $33.3M |
| EPS (diluted) | — | — | $-0.43 | $-0.42 | $0.35 | $-6.60 |
| Shares out. | 2.4M | 2.4M | 2.7M | 2.7M | 2.7M | 26.9M |
Reported figures from the company's SEC filings (XBRL). Blank where a line item isn't cleanly tagged — never estimated.
Key ratios
from filings · FY2022- Operating margin
- 16.3%
- Net margin
- 26.1%
- Return on equity
- 29.2%
- Return on assets
- 15.7%
- Return on capital (ROCE)
- 12.3%
- Liabilities / assets
- 46.2%
- Debt / equity
- 0.86×
- Book value / share
- $1.31
- Revenue growth (YoY)
- −11.7%
- 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 · FY2022- Altman Z″ (distress)
- -177.45distress
- Accruals / assets
- 24.4%high accruals
- Beneish M-Score
- -0.51elevated
- Piotroski F-Score
- 4/9mixed
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. What these scores mean →
Signs
● 2 severe● 4 warning● 3 good- Altman Z″ in the distress zone
- Filed a late-filing notice (Form NT) — missed an SEC deadline
- Revenue declined year-over-year
- Negative operating cash flow
- High accruals — earnings-quality risk
- Beneish M-Score elevated — earnings-manipulation screen flag
- Operating margin is positive
- Strong return on equity (>15%)
- Conservative leverage (liabilities < 50% of assets)
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-K/Amissed a reporting deadline ↗May 20, 2008
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.
Insider transactions
SEC Form 4 · most recent| Insider | Date | Type | Shares | Price |
|---|---|---|---|---|
| Brog TimothyDirector | Feb 22, 2023 | Sell | 52,624 | $1.51 |
| Gramm JeffersonDirector | Aug 19, 2022 | Sell | 3,059 | $20.00 |
| Brog TimothyOfficer — Chief Executive Officer | Aug 19, 2022 | Sell | 58,315 | $20.00 |
| Mikolajczyk Michael EDirector | Aug 19, 2022 | Sell | 31,851 | $20.00 |
| Westphal SusanDirector | Aug 19, 2022 | Sell | 4,472 | $20.00 |
| Gramm JeffersonDirector | Jul 29, 2022 | Grant | 1,010 | $0.00 |
| Mikolajczyk Michael EDirector | Jul 29, 2022 | Grant | 1,010 | $0.00 |
| Westphal SusanDirector | Jul 29, 2022 | Grant | 1,010 | $0.00 |
| Brog TimothyOfficer — Chief Executive Officer | Jul 18, 2022 | Option exercise | 12,500 | $0.00 |
| Brog TimothyOfficer — Chief Executive Officer | Jul 13, 2022 | Option exercise | 12,500 | $0.00 |
| Mikolajczyk Michael EDirector | Jun 23, 2021 | Grant | 1,250 | $0.00 |
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 | 8,081 | 1.0 | -0.4% |
| Apr 30, 2026 | 8,113 | 2.1 | +1.5% |
| Apr 15, 2026 | 7,991 | 1.1 | -0.2% |
| Mar 31, 2026 | 8,006 | 27.7 | -2.1% |
| Mar 13, 2026 | 8,177 | 8.4 | -0.4% |
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- Director / officer changeMar 3, 2023
- Director / officer change · Amended charter or bylawsFeb 24, 2023
- Shareholder voteDec 23, 2022
- Delisting / listing-standard notice · Regulation FD disclosureDec 13, 2022
- Director / officer changeDec 13, 2022
- Delisting / listing-standard noticeOct 20, 2022
- Completed an acquisition or dispositionSep 19, 2022
- Director / officer changeAug 22, 2022
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 ↗- 15-15DMar 30, 2023
- 10-KANNUAL REPORTMar 30, 2023
- EFFECTMar 22, 2023
- POS AMPOST-EFFECTIVE AMENDMENT NO. 2 TO FORM S-3Mar 20, 2023
- EFFECTMar 14, 2023
- POS AMPOST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3Mar 10, 2023
- S-8 POSREGISTRATION STATEMENTMar 10, 2023
- S-8 POSREGISTRATION STATEMENTMar 10, 2023
- S-8 POSREGISTRATION STATEMENTMar 10, 2023
- 8-KFORM 8-KMar 3, 2023
- 8-KCURRENT REPORTFeb 24, 2023
- 4Feb 24, 2023
- 25FORM 25Dec 23, 2022
- 8-KCURRENT REPORTDec 23, 2022
- 8-KCURRENT REPORTDec 13, 2022
Event-driven situations (1)
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