Portolan Capital Management, LLC

Entity
Company
Business address
2 International Place, 26 Th Floor, 02110 Boston, MA
Phone
617.753.6400
State of incorporation
DE
Fiscal year end
December 31
Signature 13F
Betsy Flaherty - Chief Compliance Officer
Signature Schedule 13D/G
Portolan Capital Management, LLC - George McCabe/Manager
All SEC filings
View on sec.gov
Portolan Capital Management, LLC has filed 240 SEC EDGAR filings since 2/9/2006

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
SCHEDULE 13G Open Document Open Filing Sep 17, 2025
N-PX Open Document Open Filing Aug 28, 2025 Jun 30, 2025 028-11602
13F-HR Open Document Open Filing Aug 13, 2025 Jun 30, 2025 028-11602
SCHEDULE 13G/A Open Document Open Filing Aug 13, 2025
SCHEDULE 13G/A Open Document Open Filing Aug 13, 2025
SCHEDULE 13G Open Document Open Filing Jun 27, 2025
13F-HR Open Document Open Filing May 15, 2025 Mar 31, 2025 028-11602
SCHEDULE 13G/A Open Document Open Filing May 15, 2025
SCHEDULE 13G/A Open Document Open Filing May 15, 2025
SCHEDULE 13G/A Open Document Open Filing May 15, 2025
SCHEDULE 13G Open Document Open Filing Apr 14, 2025
SCHEDULE 13G Open Document Open Filing Apr 11, 2025
SCHEDULE 13G/A Open Document Open Filing Feb 13, 2025
SCHEDULE 13G/A Open Document Open Filing Feb 13, 2025
13F-HR Open Document Open Filing Feb 13, 2025 Dec 31, 2024 028-11602
SCHEDULE 13G/A Open Document Open Filing Feb 13, 2025
SCHEDULE 13G Open Document Open Filing Feb 6, 2025
13F-HR Open Document Open Filing Nov 14, 2024 Sep 30, 2024 028-11602
SC 13G/A Open Document Open Filing SC 13G/A Nov 13, 2024
SC 13G/A Open Document Open Filing SC 13G/A Nov 13, 2024
SC 13G/A Open Document Open Filing SC 13G/A Nov 13, 2024
SC 13G Open Document Open Filing SC 13G Nov 6, 2024
N-PX Open Document Open Filing Aug 29, 2024 Jun 30, 2024 028-11602
13F-HR Open Document Open Filing Aug 14, 2024 Jun 30, 2024 028-11602
SC 13G Open Document Open Filing SC 13G Jul 22, 2024
SC 13G Open Document Open Filing SC 13G Jun 27, 2024
13F-HR Open Document Open Filing May 15, 2024 Mar 31, 2024 028-11602
SC 13G Open Document Open Filing SC 13G Mar 14, 2024
13F-HR Open Document Open Filing Feb 14, 2024 Dec 31, 2023 028-11602
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2024
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2024
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2024
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2024
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2024
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2024
SC 13G Open Document Open Filing SC 13G Dec 18, 2023
13F-HR Open Document Open Filing Nov 14, 2023 Sep 30, 2023 028-11602
13F-HR Open Document Open Filing Aug 14, 2023 Jun 30, 2023 028-11602
13F-HR Open Document Open Filing May 15, 2023 Mar 31, 2023 028-11602
SC 13G Open Document Open Filing SC 13G Apr 13, 2023
SC 13G Open Document Open Filing SC 13G Mar 24, 2023
SC 13G Open Document Open Filing SC 13G Mar 10, 2023
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2023
13F-HR Open Document Open Filing Feb 13, 2023 Dec 31, 2022 028-11602
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2023
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2023
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2023
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2023
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2023
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2023
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2023
SC 13G Open Document Open Filing SC 13G Jan 20, 2023
SC 13G Open Document Open Filing SC 13G Dec 5, 2022
SC 13G/A Open Document Open Filing SC 13G/A Nov 22, 2022
13F-HR Open Document Open Filing Nov 14, 2022 Sep 30, 2022 028-11602
13F-HR Open Document Open Filing Aug 15, 2022 Jun 30, 2022 028-11602
SC 13G Open Document Open Filing SC 13G Aug 15, 2022
SC 13G Open Document Open Filing SC 13G May 27, 2022
13F-HR Open Document Open Filing May 16, 2022 Mar 31, 2022 028-11602
SC 13G Open Document Open Filing SC 13G Feb 15, 2022
13F-HR Open Document Open Filing Feb 14, 2022 Dec 31, 2021 028-11602
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
SC 13G Open Document Open Filing SC 13G Feb 4, 2022
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Jan 6, 2022
13F-HR Open Document Open Filing Nov 15, 2021 Sep 30, 2021 028-11602
SC 13G Open Document Open Filing SC 13G Oct 21, 2021
SC 13G Open Document Open Filing SC 13G Sep 3, 2021
13F-HR Open Document Open Filing Aug 16, 2021 Jun 30, 2021 028-11602
SC 13G Open Document Open Filing SC 13G Jul 9, 2021
SC 13G Open Document Open Filing SC 13G Jul 9, 2021
SC 13G Open Document Open Filing SCHEDULE 13G Jun 11, 2021
13F-HR Open Document Open Filing May 17, 2021 Mar 31, 2021 028-11602
SC 13G Open Document Open Filing SC 13G May 10, 2021
SC 13G Open Document Open Filing SCHEDULE 13G Apr 19, 2021
13F-HR Open Document Open Filing Feb 16, 2021 Dec 31, 2020 028-11602
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 12, 2021
SC 13G/A Open Document Open Filing SC 13G/A Feb 12, 2021
SC 13G/A Open Document Open Filing SC 13G/A Feb 12, 2021
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 12, 2021
SC 13G/A Open Document Open Filing SC 13G/A Feb 12, 2021
SC 13G/A Open Document Open Filing SC 13G/A Feb 12, 2021
SC 13G/A Open Document Open Filing SC 13G/A Feb 12, 2021
SC 13G/A Open Document Open Filing SC 13G/A Feb 12, 2021
SC 13G Open Document Open Filing SC 13G Feb 8, 2021
SC 13G Open Document Open Filing SC 13G Feb 5, 2021
SC 13G Open Document Open Filing SC 13G Jan 29, 2021
SC 13G Open Document Open Filing SC 13G Jan 15, 2021
SC 13G Open Document Open Filing FORM SC 13G Dec 31, 2020
SC 13G Open Document Open Filing SC 13G Dec 31, 2020
SC 13G Open Document Open Filing SC 13G Dec 28, 2020
13F-HR Open Document Open Filing Nov 16, 2020 Sep 30, 2020 028-11602
SC 13G Open Document Open Filing SC 13G Sep 28, 2020
SC 13G Open Document Open Filing SC 13G Sep 18, 2020
SC 13G Open Document Open Filing SC 13G Sep 14, 2020
13F-HR Open Document Open Filing Aug 14, 2020 Jun 30, 2020 028-11602
SC 13G Open Document Open Filing SCHEDULE 13G Jul 20, 2020
13F-HR Open Document Open Filing May 14, 2020 Mar 31, 2020 028-11602
13F-HR Open Document Open Filing Feb 14, 2020 Dec 31, 2019 028-11602
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 14, 2020
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 14, 2020
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 14, 2020
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 14, 2020
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 14, 2020
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 14, 2020
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 14, 2020
13F-HR Open Document Open Filing Nov 14, 2019 Sep 30, 2019 028-11602
SC 13G Open Document Open Filing SC 13G Oct 21, 2019
13F-HR Open Document Open Filing Aug 14, 2019 Jun 30, 2019 028-11602
13F-HR Open Document Open Filing May 15, 2019 Mar 31, 2019 028-11602
SC 13G Open Document Open Filing SC 13G May 1, 2019
SC 13G Open Document Open Filing SC 13G Mar 14, 2019
13F-HR Open Document Open Filing Feb 13, 2019 Dec 31, 2018 028-11602
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2019
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2019
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2019
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2019
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2019
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2019
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2019
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2019
13F-HR Open Document Open Filing Nov 14, 2018 Sep 30, 2018 028-11602
13F-HR Open Document Open Filing Aug 14, 2018 Jun 30, 2018 028-11602
SC 13G Open Document Open Filing SC 13G Jun 27, 2018
SC 13G Open Document Open Filing SC 13G Jun 22, 2018
13F-HR Open Document Open Filing May 14, 2018 Mar 31, 2018 028-11602
SC 13G Open Document Open Filing SC 13G Apr 16, 2018
13F-HR Open Document Open Filing Feb 14, 2018 Dec 31, 2017 028-11602
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2018
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2018
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2018
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2018
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2018
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2018
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2018
SC 13G Open Document Open Filing SC 13G Feb 2, 2018
SC 13G Open Document Open Filing SC 13G Jan 5, 2018
13F-HR Open Document Open Filing Nov 14, 2017 Sep 30, 2017 028-11602
SC 13G Open Document Open Filing SC 13G Aug 17, 2017
13F-HR Open Document Open Filing Aug 14, 2017 Jun 30, 2017 028-11602
SC 13G Open Document Open Filing SC 13G Jul 7, 2017
SC 13G Open Document Open Filing SC 13G Jun 1, 2017
13F-HR Open Document Open Filing May 15, 2017 Mar 31, 2017 028-11602
SC 13G Open Document Open Filing SC 13G May 11, 2017
SC 13G Open Document Open Filing SC 13G Apr 13, 2017
13F-HR Open Document Open Filing Feb 14, 2017 Dec 31, 2016 028-11602
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2017
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2017
SC 13G/A Open Document Open Filing SC 13G/A Feb 3, 2017
13F-HR Open Document Open Filing Nov 14, 2016 Sep 30, 2016 028-11602
13F-HR Open Document Open Filing Aug 12, 2016 Jun 30, 2016 028-11602
13F-HR Open Document Open Filing May 13, 2016 Mar 31, 2016 028-11602
13F-HR Open Document Open Filing Feb 12, 2016 Dec 31, 2015 028-11602
SC 13G/A Open Document Open Filing SC 13G/A Feb 10, 2016
SC 13G/A Open Document Open Filing SC 13G/A Feb 10, 2016
SC 13G/A Open Document Open Filing SC 13G/A Feb 10, 2016
SC 13G/A Open Document Open Filing SC 13G/A Feb 10, 2016
13F-HR Open Document Open Filing Nov 13, 2015 Sep 30, 2015 028-11602
SC 13G Open Document Open Filing SC 13G Aug 17, 2015
13F-HR Open Document Open Filing Aug 14, 2015 Jun 30, 2015 028-11602
13F-HR Open Document Open Filing May 15, 2015 Mar 31, 2015 028-11602
SC 13G Open Document Open Filing SC 13G May 8, 2015
13F-HR Open Document Open Filing Feb 11, 2015 Dec 31, 2014 028-11602
SC 13G/A Open Document Open Filing SC 13G/A Feb 10, 2015
SC 13G Open Document Open Filing SC 13G Jan 13, 2015
13F-HR Open Document Open Filing Nov 13, 2014 Sep 30, 2014 028-11602
SC 13G Open Document Open Filing SC 13G Oct 20, 2014
13F-HR Open Document Open Filing Aug 12, 2014 Jun 30, 2014 028-11602
13F-HR Open Document Open Filing May 15, 2014 Mar 31, 2014 028-11602
SC 13G Open Document Open Filing SC 13G Feb 13, 2014
13F-HR Open Document Open Filing Feb 13, 2014 Dec 31, 2013 028-11602