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Rubicon Technology, Inc. — Insider Transactions

Form 4 filings by directors, officers, and 10%+ shareholders

SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.

Overview All Filings Annual Quarterly Insiders
Insider Title Type Shares Price Value Owns After Date
Brog Timothy Sale 52,624 $1.51 $79,462 4,969 Feb 22, 2023
Bandera Partners LLC Sale 3,059 $20.00 $61,180 3,021 Aug 19, 2022
Brog Timothy Chief Executive Officer Sale 58,315 $20.00 $1,166,300 57,593 Aug 19, 2022
MIKOLAJCZYK MICHAEL E Sale 31,851 $20.00 $637,020 31,456 Aug 19, 2022
Westphal Susan Sale 4,472 $20.00 $89,440 4,416 Aug 19, 2022
MIKOLAJCZYK MICHAEL E Award / Grant 1,010 63,307 Jul 29, 2022
Gramm Jefferson Award / Grant 1,010 5,454 Jul 29, 2022
Westphal Susan Award / Grant 1,010 8,888 Jul 29, 2022
Brog Timothy Chief Executive Officer Option Exercise 12,500 122,254 Jul 18, 2022
Brog Timothy Chief Executive Officer Option Exercise 12,500 116,100 Jul 13, 2022
MIKOLAJCZYK MICHAEL E Award / Grant 1,250 62,297 Jun 23, 2021
Westphal Susan Award / Grant 1,250 7,878 Jun 23, 2021
Gramm Jefferson Award / Grant 1,250 4,444 Jun 23, 2021
Brog Timothy President and CEO Tax Withholding 14,950 $10.81 $161,610 103,600 Apr 6, 2021
Brog Timothy President and CEO Option Exercise 17,280 92,280 Oct 19, 2020
Gramm Jefferson Award / Grant 1,199 3,194 Jul 15, 2020
MIKOLAJCZYK MICHAEL E Award / Grant 1,199 61,047 Jul 15, 2020
Westphal Susan Award / Grant 1,199 6,628 Jul 15, 2020
Brog Timothy President and CEO Tax Withholding 21,000 $9.09 $190,890 75,000 Sep 30, 2019
Brog Timothy Chief Executive Officer Purchase 2,051 $8.08 $16,572 47,000 Jun 11, 2019
MIKOLAJCZYK MICHAEL E Disposition 12,818 $8.12 $104,082 59,848 Jun 10, 2019
Brog Timothy Chief Executive Officer Purchase 7,600 $8.00 $60,800 44,600 Jun 7, 2019
Gramm Jefferson Award / Grant 1,391 1,995 May 29, 2019
Westphal Susan Award / Grant 1,391 5,429 May 29, 2019
MIKOLAJCZYK MICHAEL E Award / Grant 1,391 72,666 May 29, 2019
MIKOLAJCZYK MICHAEL E Award / Grant 5,000 $8.64 $43,200 71,275 Dec 3, 2018
MIKOLAJCZYK MICHAEL E Award / Grant 9,329 $8.68 $80,976 51,060 Nov 29, 2018
MIKOLAJCZYK MICHAEL E Award / Grant 4,711 $8.30 $39,101 40,986 Nov 28, 2018
Slavutsky Inga A Chief Financial Officer Option Exercise 219 357 Jul 6, 2018
Westphal Susan Award / Grant 626 4,038 Mar 16, 2018
MIKOLAJCZYK MICHAEL E Award / Grant 626 36,275 Mar 16, 2018
Gramm Jefferson Award / Grant 626 1,230 Mar 16, 2018
Westphal Susan Award / Grant 1,175 3,412 Jan 2, 2018
MIKOLAJCZYK MICHAEL E Award / Grant 1,269 35,649 Jan 2, 2018
Gramm Jefferson Award / Grant 604 604 Jan 2, 2018
CALDWELL DONALD R Sale 221,784 $8.00 $1,774,272 Nov 16, 2017
Graffy Mardel A Chief Financial Officer Tax Withholding 130 $7.61 $989 284 Nov 1, 2017
Westphal Susan Award / Grant 1,106 2,237 Sep 30, 2017
MIKOLAJCZYK MICHAEL E Award / Grant 1,247 34,380 Sep 30, 2017
CALDWELL DONALD R Award / Grant 1,228 13,900 Sep 30, 2017
Aquilano Don N Award / Grant 1,914 26,287 Sep 30, 2017
Westphal Susan Award / Grant 964 1,131 Jun 30, 2017
MIKOLAJCZYK MICHAEL E Award / Grant 1,101 33,133 Jun 30, 2017
CALDWELL DONALD R Award / Grant 1,084 12,672 Jun 30, 2017
Aquilano Don N Award / Grant 1,689 24,373 Jun 30, 2017
Brog Timothy President and CEO Option Exercise 15,000 42,759 Jun 9, 2017
Brog Timothy President and CEO Tax Withholding 138,000 $0.80 $110,400 277,594 Apr 6, 2017
Spencer Raymond J Award / Grant 10,393 147,551 Mar 31, 2017
Westphal Susan Award / Grant 1,673 1,673 Mar 31, 2017
MIKOLAJCZYK MICHAEL E Award / Grant 11,720 320,327 Mar 31, 2017