Penbrook Management LLC

Business address
880 Third Avenue, 16 Th Floor, New York, NY, 10022
Top securities (13F)
NVO, MSFT, AMZN, MCO, GOOGL, GOOG, PL, TRI, AEHR, ALKT, PLAB, BX, SA, SONY, VMD, ADP, CURI, ELVA, NNY, and BRKB
State of incorporation
DE
Fiscal year end
31 December
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Penbrook Management LLC has filed 72 SEC EDGAR filings since 27 Nov 2006

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
13F-HR Open Document Open Filing 22 Oct 2025 30 Sep 2025 028-12868
N-PX Open Document Open Filing 28 Aug 2025 30 Jun 2025 028-12868
13F-HR/A Open Document Open Filing 28 Jul 2025 30 Jun 2025 028-12868
13F-HR Open Document Open Filing 25 Jul 2025 30 Jun 2025 028-12868
13F-HR Open Document Open Filing 01 Apr 2025 31 Mar 2025 028-12868
13F-HR Open Document Open Filing 23 Jan 2025 31 Dec 2024 028-12868
13F-HR Open Document Open Filing 15 Oct 2024 30 Sep 2024 028-12868
N-PX Open Document Open Filing 13 Sep 2024 30 Jun 2024 028-12868
13F-HR Open Document Open Filing 24 Jul 2024 30 Jun 2024 028-12868
13F-HR Open Document Open Filing 18 Apr 2024 31 Mar 2024 028-12868
13F-HR Open Document Open Filing 16 Jan 2024 31 Dec 2023 028-12868
13F-HR Open Document Open Filing 10 Oct 2023 30 Sep 2023 028-12868
13F-HR Open Document Open Filing 17 Jul 2023 30 Jun 2023 028-12868
13F-HR Open Document Open Filing 20 Apr 2023 31 Mar 2023 028-12868
13F-HR Open Document Open Filing 24 Jan 2023 31 Dec 2022 028-12868
13F-HR Open Document Open Filing 31 Oct 2022 30 Sep 2022 028-12868
13F-HR Open Document Open Filing 29 Jul 2022 30 Jun 2022 028-12868
13F-HR Open Document Open Filing 26 Apr 2022 31 Mar 2022 028-12868
13F-HR/A Open Document Open Filing 25 Apr 2022 31 Dec 2020 028-12868
13F-HR Open Document Open Filing 10 Jan 2022 31 Dec 2021 028-12868
13F-HR Open Document Open Filing 26 Oct 2021 30 Sep 2021 028-12868
13F-HR Open Document Open Filing 27 Jul 2021 30 Jun 2021 028-12868
13F-HR/A Open Document Open Filing 06 May 2021 31 Mar 2021 028-12868
13F-HR/A Open Document Open Filing 05 May 2021 31 Mar 2021 028-12868
13F-HR Open Document Open Filing 16 Apr 2021 31 Mar 2021 028-12868
13F-HR Open Document Open Filing 27 Jan 2021 31 Dec 2020 028-12868
13F-HR Open Document Open Filing 23 Oct 2020 30 Sep 2020 028-12868
13F-HR Open Document Open Filing 28 Jul 2020 30 Jun 2020 028-12868
13F-HR Open Document Open Filing 14 Apr 2020 31 Mar 2020 028-12868
13F-HR Open Document Open Filing 16 Jan 2020 31 Dec 2019 028-12868
13F-HR Open Document Open Filing 11 Oct 2019 30 Sep 2019 028-12868
13F-HR Open Document Open Filing 15 Jul 2019 30 Jun 2019 028-12868
13F-HR Open Document Open Filing 24 Apr 2019 31 Mar 2019 028-12868
SC 13G/A Open Document Open Filing 13G/A 2018 15 Feb 2019
SC 13G/A Open Document Open Filing FORM 13G/A 12 Feb 2019
13F-HR Open Document Open Filing 01 Feb 2019 31 Dec 2018 028-12868
13F-HR Open Document Open Filing 23 Oct 2018 30 Sep 2018 028-12868
13F-HR Open Document Open Filing 30 Jul 2018 30 Jun 2018 028-12868
13F-HR Open Document Open Filing 27 Apr 2018 31 Mar 2018 028-12868
13F-HR Open Document Open Filing 21 Feb 2018 31 Dec 2017 028-12868
SC 13G/A Open Document Open Filing SC 13G/A DATA I/O DEC 31 2017 21 Feb 2018
SC 13G/A Open Document Open Filing SC 13G/A 13 Feb 2017
13F-HR Open Document Open Filing 27 Oct 2016 30 Sep 2016 028-12868
13F-HR Open Document Open Filing 05 Aug 2016 30 Jun 2016 028-12868
13F-HR Open Document Open Filing 21 Apr 2016 31 Mar 2016 028-12868
SC 13G/A Open Document Open Filing DATA I/O 13GA 25 Feb 2016
13F-HR Open Document Open Filing 29 Jan 2016 31 Dec 2015 028-12868
13F-HR Open Document Open Filing 12 Nov 2015 30 Sep 2015 028-12868
13F-HR Open Document Open Filing 04 Aug 2015 30 Jun 2015 028-12868
13F-HR Open Document Open Filing 27 Apr 2015 31 Mar 2015 028-12868
SC 13G/A Open Document Open Filing SC 13G/A DATA I/O 03 Feb 2015
13F-HR Open Document Open Filing 28 Jan 2015 31 Dec 2014 028-12868
13F-HR Open Document Open Filing 16 Oct 2014 30 Sep 2014 028-12868
13F-HR Open Document Open Filing 04 Aug 2014 30 Jun 2014 028-12868
13F-HR/A Open Document Open Filing 07 May 2014 31 Mar 2014 028-12868
13F-HR Open Document Open Filing 02 May 2014 31 Mar 2014 028-12868
SC 13G/A Open Document Open Filing PENBROOK MANAGEMENT LLC SC 13G/A 25 Mar 2014
13F-HR Open Document Open Filing 25 Mar 2014 31 Dec 2013 028-12868