# Rubicon Technology Inc. (RBCN)

Source: https://www.quantisnow.com/company/RBCN
Generated: 2026-11-15T00:39:45.065Z

- Ticker: RBCN
- Exchange: NASDAQ
- Sector: Technology
- Industry: Semiconductors
- IPO year: 2007
- Website: rubicontechnology.com

## About

Rubicon Technology, Inc. provides monocrystalline sapphire for applications in optical and industrial systems. It operates in Sapphire and Pharmacy segments. The company offers optical and industrial sapphire products in various shapes and sizes, including round and rectangular windows and wafers, domes, tubes, and rods for a range of end markets comprising defense and aerospace, specialty lighting, instrumentation, sensors and detectors, semiconductor process equipment, electronic substrates, medical, and laser applications. It also provides medications and vitamins to patients being discharged from skilled nursing facilities. The company markets and sells its products through its direct sales force in North America, Europe, and Asia. Its principal customers include defense subcontractors, industrial manufacturers, fabricators, and resellers. The company was incorporated in 2001 and is headquartered in Bensenville, Illinois.

## Latest RBCN news and filings

- 2025-10-14 20:15 UTC [Conference Announcement] [Rubicon Technology, Inc. completes acquisition of Janel Group LLC](https://www.quantisnow.com/insight/rubicon-technology-inc-completes-acquisition-of-janel-group-llc-6232425)
- 2025-08-20 22:06 UTC [Conference Announcement] [Rubicon Technology, Inc. to acquire Janel Group LLC](https://www.quantisnow.com/insight/rubicon-technology-inc-to-acquire-janel-group-llc-6173988)
- 2023-03-30 21:18 UTC [SEC Form 15-15D filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-15-15d-filed-by-rubicon-technology-inc-4275278)
- 2023-03-30 21:15 UTC [SEC Form 10-K] [SEC Form 10-K filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-10-k-filed-by-rubicon-technology-inc-4275263)
- 2023-03-15 04:15 UTC [SEC Form EFFECT] [SEC Form EFFECT filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-effect-filed-by-rubicon-technology-inc-4202873)
- 2023-03-10 22:05 UTC [SEC Form POS AM filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-pos-am-filed-by-rubicon-technology-inc-4188260)
- 2023-03-10 22:00 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-rubicon-technology-inc-4188217)
- 2023-03-10 22:01 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-rubicon-technology-inc-4188193)
- 2023-03-10 22:00 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-rubicon-technology-inc-4188165)
- 2023-02-24 22:19 UTC [SEC Form 8-K] [Rubicon Technology Inc. filed SEC Form 8-K: Leadership Update, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits](https://www.quantisnow.com/insight/rubicon-technology-inc-filed-sec-form-8-k-leadership-update-amendments-4117956)
- 2023-02-24 13:00 UTC [SEC Form 4] [SEC Form 4: Brog Timothy sold $79,462 worth of shares (52,624 units at $1.51), decreasing direct ownership by 91% to 4,969 units](https://www.quantisnow.com/insight/sec-form-4-brog-timothy-sold-79462-worth-of-shares-4112693)
- 2023-01-04 18:09 UTC [Market Chatter] [Shares of chip, semiconductor and memory stocks are trading higher following reports indicating China will pause investments in its chip industry, which has lifted international competitors.  The sector has rebounded with other stocks today following recent weakness despite continued concerns over weak demand.](https://www.quantisnow.com/insight/shares-of-chip-semiconductor-and-memory-stocks-are-trading-higher-3870081)
- 2023-01-03 17:30 UTC [Market Insight] [12 Information Technology Stocks Moving In Tuesday's Intraday Session](https://www.quantisnow.com/insight/12-information-technology-stocks-moving-in-tuesdays-intraday-session-3863573)
- 2023-01-02 17:30 UTC [Market Insight] [12 Information Technology Stocks Moving In Monday's Intraday Session](https://www.quantisnow.com/insight/12-information-technology-stocks-moving-in-mondays-intraday-session-3860366)
- 2022-12-30 17:31 UTC [Market Insight] [12 Information Technology Stocks Moving In Friday's Intraday Session](https://www.quantisnow.com/insight/12-information-technology-stocks-moving-in-fridays-intraday-session-3858080)
- 2022-12-29 17:14 UTC [Market Insight] [Stocks That Hit 52-Week Lows On Thursday](https://www.quantisnow.com/insight/stocks-that-hit-52-week-lows-on-thursday-3854262)
- 2022-12-23 21:45 UTC [SEC Form 25 filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-25-filed-by-rubicon-technology-inc-3842954)
- 2022-12-23 19:00 UTC [SEC Form 8-K] [Rubicon Technology Inc. filed SEC Form 8-K: Submission of Matters to a Vote of Security Holders](https://www.quantisnow.com/insight/rubicon-technology-inc-filed-sec-form-8-k-submission-of-matters-3842013)
- 2022-12-16 17:39 UTC [Market Insight] [Stocks That Hit 52-Week Lows On Friday](https://www.quantisnow.com/insight/stocks-that-hit-52-week-lows-on-friday-3816808)
- 2022-12-15 17:31 UTC [Market Insight] [12 Information Technology Stocks Moving In Thursday's Intraday Session](https://www.quantisnow.com/insight/12-information-technology-stocks-moving-in-thursdays-intraday-session-3811846)
- 2022-12-14 19:44 UTC [Market Chatter] [Shares of several companies in the broader tech sector are trading lower amid overall market weakness following today's Fed decision to raise interest rates by 50 basis points.](https://www.quantisnow.com/insight/shares-of-several-companies-in-the-broader-tech-sector-are-3806489)
- 2022-12-14 19:04 UTC [Market Insight] [Why Netcapital Shares Are Trading Lower By Over 33%? Here Are 50 Stocks Moving In Wednesday's Mid-Day Session](https://www.quantisnow.com/insight/why-netcapital-shares-are-trading-lower-by-over-33-here-3806309)
- 2022-12-14 17:32 UTC [Market Insight] [11 Information Technology Stocks Moving In Wednesday's Intraday Session](https://www.quantisnow.com/insight/11-information-technology-stocks-moving-in-wednesdays-intraday-session-3805938)
- 2022-12-14 13:06 UTC [Market Insight] [12 Information Technology Stocks Moving In Wednesday's Pre-Market Session](https://www.quantisnow.com/insight/12-information-technology-stocks-moving-in-wednesdays-pre-market-session-3804097)
- 2022-12-14 11:30 UTC [Market Insight] [Why Vallon Pharmaceuticals Shares Are Trading Higher By Over 150%; Here Are 29 Stocks Moving Premarket](https://www.quantisnow.com/insight/why-vallon-pharmaceuticals-shares-are-trading-higher-by-over-150-3803433)
- 2022-12-13 21:32 UTC [Market Insight] [Rubicon Technology Announces Voluntary Delisting from Nasdaq](https://www.quantisnow.com/insight/rubicon-technology-announces-voluntary-delisting-from-nasdaq-3801904)
- 2022-12-13 21:30 UTC [SEC Form 8-K] [Rubicon Technology Inc. filed SEC Form 8-K: Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Regulation FD Disclosure, Financial Statements and Exhibits](https://www.quantisnow.com/insight/rubicon-technology-inc-filed-sec-form-8-k-notice-of-delisting-3801885)
- 2022-12-13 21:30 UTC [Rubicon Technology Announces Voluntary Delisting from Nasdaq](https://www.quantisnow.com/insight/rubicon-technology-announces-voluntary-delisting-from-nasdaq-3801845)
- 2022-12-13 13:12 UTC [Market Chatter] [On Dec12, 2022, Rubicon Technology's Board And Timothy Brog, Co's CEO, President, And Acting CFO, Mutually Agreed That A New CEO Is Needed;  Company Has Begun A Search For A New Chief Executive Officer](https://www.quantisnow.com/insight/on-dec12-2022-rubicon-technologys-board-and-timothy-brog-cos-3798349)
- 2022-12-13 13:00 UTC [SEC Form 8-K] [Rubicon Technology Inc. filed SEC Form 8-K: Leadership Update](https://www.quantisnow.com/insight/rubicon-technology-inc-filed-sec-form-8-k-leadership-update-3798228)
- 2022-12-07 17:31 UTC [Market Insight] [12 Information Technology Stocks Moving In Wednesday's Intraday Session](https://www.quantisnow.com/insight/12-information-technology-stocks-moving-in-wednesdays-intraday-session-3778929)
- 2022-12-06 14:41 UTC [Market Insight] [5 Value Stocks In The Technology Sector](https://www.quantisnow.com/insight/5-value-stocks-in-the-technology-sector-3772312)
- 2022-11-21 21:55 UTC [SEC Form DEF 14A] [SEC Form DEF 14A filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-def-14a-filed-by-rubicon-technology-inc-3716533)
- 2022-11-10 21:12 UTC [SEC Form 10-Q] [SEC Form 10-Q filed by Rubicon Technology Inc.](https://www.quantisnow.com/insight/sec-form-10-q-filed-by-rubicon-technology-inc-3667744)
- 2022-10-20 20:25 UTC [Market Insight] [Rubicon Technology Says On Oct. 14, 2022 Co. Received Notifications From Nasdaq That It Was No Longer In Compliance With Various Independent Director Requirements](https://www.quantisnow.com/insight/rubicon-technology-says-on-oct-14-2022-co-received-notifications-3558808)
- 2022-10-20 20:01 UTC [SEC Form 8-K] [Rubicon Technology Inc. filed SEC Form 8-K: Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing](https://www.quantisnow.com/insight/rubicon-technology-inc-filed-sec-form-8-k-notice-of-delisting-3558433)
- 2022-10-03 17:37 UTC [Market Insight] [Stocks That Hit 52-Week Lows On Monday](https://www.quantisnow.com/insight/stocks-that-hit-52-week-lows-on-monday-3484706)
- 2022-09-27 16:42 UTC [Market Insight] [Stocks That Hit 52-Week Lows On Tuesday](https://www.quantisnow.com/insight/stocks-that-hit-52-week-lows-on-tuesday-3459011)
- 2022-09-26 18:09 UTC [Market Insight] [Stocks That Hit 52-Week Lows On Monday](https://www.quantisnow.com/insight/stocks-that-hit-52-week-lows-on-monday-3453428)
- 2022-09-22 18:17 UTC [Market Insight] [Stocks That Hit 52-Week Lows On Thursday](https://www.quantisnow.com/insight/stocks-that-hit-52-week-lows-on-thursday-3443568)

## More

- Live page with ratings, short volume, options and peers: https://www.quantisnow.com/company/RBCN
- Earnings history: https://www.quantisnow.com/earnings/RBCN
- Dividend history: https://www.quantisnow.com/dividends/RBCN
- Insider transactions: https://www.quantisnow.com/insiders/RBCN
- Options chain: https://www.quantisnow.com/options/RBCN
- SEC 8-K filings only: https://www.quantisnow.com/company/RBCN/8-k
- RSS and alerts for RBCN: https://www.quantisnow.com/docs/rss-feeds.md