Rubicon Technology, Inc.
RBCNDelisted Dec 23, 2022- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001410172
Rubicon Technology, Inc. was delisted on Dec 23, 2022; its insiders filed their last Form 4 on Feb 24, 2023; 20 institutions reported holding it in 13F filings for Q3 2022, worth $867.3K in total; no superinvestor held it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Rubicon Technology, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Rubicon Technology, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Brog Timothy | Director | 4,969 | Feb 24, 2023 | 0 |
| Bandera Partners LLC | 10% Owner, Other: See Footnote 1 | 128,323Indirect | Aug 23, 2022 | 0 |
| Bylinsky Gregory | 10% Owner, Other: See Footnote 1 | 128,323Indirect | Aug 23, 2022 | 0 |
| Gramm Jefferson | Director, 10% Owner, Other: See Footnote 1 | 128,323Indirect | Aug 23, 2022 | 0 |
| Mikolajczyk Michael E | Director | 31,456 | Aug 22, 2022 | 0 |
| Westphal Susan | Director | 4,416 | Aug 22, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Feb 24, 2023 (view filing) | Feb 22 | 2 days | Brog TimothyDirector | SSale | −52.6K | $1.51 | −$79.5K | −91.4%4.97K after | |
| Aug 23, 2022 (view filing)4:23 PM ET | Aug 19 | 4 days | Gramm Jefferson and 2 othersDirector, 10% Owner, Other: See Footnote 1 | SSaleCommon Stock, $0.001 Par Value Per Share | −3.06K | $20.00 | −$61.2K | −50.3%3.02K after | |
| Aug 23, 2022 (view filing)4:23 PM ET | Aug 19 | 4 days | Gramm Jefferson and 2 othersDirector, 10% Owner, Other: See Footnote 1 | SSaleCommon Stock, $0.001 Par Value Per Share | −129.9K | $20.00 | −$2.60M | −50.3%128.3K after | |
| Aug 22, 2022 (view filing) | Aug 19 | 3 days | Brog TimothyChief Executive Officer | SSale | −58.3K | $20.00 | −$1.17M | −50.3%57.6K after | |
| Aug 22, 2022 (view filing) | Aug 19 | 3 days | Mikolajczyk Michael EDirector | SSale | −31.9K | $20.00 | −$637.0K | −50.3%31.5K after | |
| Aug 22, 2022 (view filing) | Aug 19 | 3 days | Westphal SusanDirector | SSale | −4.47K | $20.00 | −$89.4K | −50.3%4.42K after |