LOOMIS SAYLES & CO L P

Business address
One Financial Ctr, Legal & Compliance, 5 Th Floor, Boston, MA, 02111
Top securities (13F)
NVDA, TSLA, META, ORCL, NFLX, GOOGL, AMZN, V, MSFT, BA, SHOP, ADSK, MNST, DIS, VRTX, CRM, REGN, NVO, SBUX, and QCOM
LOOMIS SAYLES & CO L P has filed 401 SEC EDGAR filings since 11 May 1999

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
13F-HR Open Document Open Filing 13 Nov 2025 30 Sep 2025 028-00398
SCHEDULE 13G/A Open Document Open Filing 13 Nov 2025
40-APP/A Open Document Open Filing 40-APP/A 07 Oct 2025 812-15627-06
13F-HR Open Document Open Filing 13 Aug 2025 30 Jun 2025 028-00398
SCHEDULE 13G/A Open Document Open Filing 13 Aug 2025
N-PX Open Document Open Filing 05 Aug 2025 30 Jun 2025 028-00398
40-APP/A Open Document Open Filing 40-APP/A 01 Jul 2025 812-15627-06
SCHEDULE 13G/A Open Document Open Filing 15 May 2025
SCHEDULE 13G/A Open Document Open Filing 15 May 2025
13F-HR Open Document Open Filing 14 May 2025 31 Mar 2025 028-00398
40-APP/A Open Document Open Filing 40-APP/A 17 Apr 2025 812-15627-06
SCHEDULE 13G Open Document Open Filing 12 Feb 2025
SCHEDULE 13G/A Open Document Open Filing 12 Feb 2025
13F-HR Open Document Open Filing 12 Feb 2025 31 Dec 2024 028-00398
SCHEDULE 13G/A Open Document Open Filing 14 Nov 2024
13F-HR Open Document Open Filing 13 Nov 2024 30 Sep 2024 028-00398
SCHEDULE 13G/A Open Document Open Filing 13 Nov 2024
40-APP Open Document Open Filing 40-APP 12 Sep 2024 812-15627-06
N-PX Open Document Open Filing 26 Aug 2024 30 Jun 2024 028-00398
13F-HR Open Document Open Filing 13 Aug 2024 30 Jun 2024 028-00398
13F-HR Open Document Open Filing 14 May 2024 31 Mar 2024 028-00398
SC 13G/A Open Document Open Filing SEI 13G/A 13 Feb 2024
SC 13G/A Open Document Open Filing DISH NETWORK 13G/A 13 Feb 2024
13F-HR Open Document Open Filing 13 Feb 2024 31 Dec 2023 028-00398
13F-HR Open Document Open Filing 09 Nov 2023 30 Sep 2023 028-00398
13F-HR Open Document Open Filing 11 Aug 2023 30 Jun 2023 028-00398
13F-HR/A Open Document Open Filing 15 May 2023 31 Mar 2023 028-00398
13F-HR Open Document Open Filing 11 May 2023 31 Mar 2023 028-00398
SC 13G/A Open Document Open Filing SEI 13G/A 13 Feb 2023
SC 13G/A Open Document Open Filing FACTSET RESEARCH SYSTEMS INC 13G/A 13 Feb 2023
SC 13G/A Open Document Open Filing EXPEDITORS INTL WASH INC 13G/A 13 Feb 2023
SC 13G/A Open Document Open Filing DISH NETWORK 13G/A 13 Feb 2023
13F-HR Open Document Open Filing 10 Feb 2023 31 Dec 2022 028-00398
13F-HR Open Document Open Filing 14 Nov 2022 30 Sep 2022 028-00398
13F-HR Open Document Open Filing 05 Aug 2022 30 Jun 2022 028-00398
13F-HR Open Document Open Filing 13 May 2022 31 Mar 2022 028-00398
SC 13G/A Open Document Open Filing SEI 13G/A 14 Feb 2022
SC 13G/A Open Document Open Filing HEXION 13G/A 14 Feb 2022
SC 13G/A Open Document Open Filing FACTSET RESEARCH 13G/A 14 Feb 2022
SC 13G/A Open Document Open Filing EXPEDITORS INTL WASH INC 13G/A 14 Feb 2022
SC 13G Open Document Open Filing DISH NETWORK CORP 13G 14 Feb 2022
13F-HR Open Document Open Filing 14 Feb 2022 31 Dec 2021 028-00398
13F-HR Open Document Open Filing 12 Nov 2021 30 Sep 2021 028-00398
SC 13G/A Open Document Open Filing PIONEER 13GA 09 Nov 2021
SC 13G/A Open Document Open Filing LONESTAR 13GA 09 Nov 2021
13F-HR Open Document Open Filing 13 Aug 2021 30 Jun 2021 028-00398
SC 13G/A Open Document Open Filing WHITING PETROLEUM 13G/A 09 Jul 2021
13F-HR Open Document Open Filing 17 May 2021 31 Mar 2021 028-00398
SC 13G Open Document Open Filing LONESTAR 13G 16 Feb 2021
SC 13G Open Document Open Filing PIONEER ENERGY SERVICES CORP 13G 16 Feb 2021
SC 13G/A Open Document Open Filing GOOSEHEAD INSURANCE INC 13G/A 12 Feb 2021
SC 13G Open Document Open Filing WHITING PETROLEUM CORP 13G 12 Feb 2021
SC 13G/A Open Document Open Filing SEI 13G/A 12 Feb 2021
SC 13G/A Open Document Open Filing ISTAR INC 13G/A 12 Feb 2021
SC 13G Open Document Open Filing HEXION 13G 12 Feb 2021
SC 13G/A Open Document Open Filing FACTSET RESEARCH 13G/A 12 Feb 2021
SC 13G/A Open Document Open Filing EXPEDITORS INTL WASH INC 13G/A 12 Feb 2021
13F-HR Open Document Open Filing 12 Feb 2021 31 Dec 2020 028-00398
13F-HR Open Document Open Filing 12 Nov 2020 30 Sep 2020 028-00398
13F-HR Open Document Open Filing 14 Aug 2020 30 Jun 2020 028-00398
13F-HR Open Document Open Filing 15 May 2020 31 Mar 2020 028-00398
SC 13G/A Open Document Open Filing VARIAN MEDICAL SYSTEMS 13G/A 14 Feb 2020
SC 13G/A Open Document Open Filing SEI 13G/A 14 Feb 2020
SC 13G/A Open Document Open Filing FACTSET RESEARCH 13G/A 14 Feb 2020
SC 13G/A Open Document Open Filing EVO PAYMENTS INC 13G/A 14 Feb 2020
SC 13G/A Open Document Open Filing EXPEDITORS INTL WASH INC 13G/A 14 Feb 2020
SC 13G/A Open Document Open Filing AUTODESK INC 13G/A 14 Feb 2020
SC 13G Open Document Open Filing GOOSEHEAD INSURANCE 13G 14 Feb 2020
13F-HR Open Document Open Filing 14 Feb 2020 31 Dec 2019 028-00398
SC 13G/A Open Document Open Filing ISTAR INC 13G/A 10 Jan 2020
13F-HR Open Document Open Filing 13 Nov 2019 30 Sep 2019 028-00398
13F-HR Open Document Open Filing 14 Aug 2019 30 Jun 2019 028-00398
SC 13G/A Open Document Open Filing ISTAR INC 13G/A 08 Aug 2019
13F-HR Open Document Open Filing 15 May 2019 31 Mar 2019 028-00398
SC 13G/A Open Document Open Filing VARIAN MEDICAL SYSTEMS 13G/A 14 Feb 2019
SC 13G/A Open Document Open Filing SEI 13G/A 14 Feb 2019
SC 13G/A Open Document Open Filing ISTAR INC 13G/A 14 Feb 2019
SC 13G/A Open Document Open Filing FACTSET RESEARCH 13G/A 14 Feb 2019
SC 13G/A Open Document Open Filing 14 Feb 2019
SC 13G/A Open Document Open Filing AUTODESK INC 13G/A 14 Feb 2019
SC 13G Open Document Open Filing EVO PAYMENTS INC 14 Feb 2019
13F-HR Open Document Open Filing 14 Feb 2019 31 Dec 2018 028-00398
40-APP Open Document Open Filing 40-APP 21 Dec 2018 812-14992-01
13F-HR Open Document Open Filing 13 Nov 2018 30 Sep 2018 028-00398
13F-HR Open Document Open Filing 14 Aug 2018 30 Jun 2018 028-00398
13F-HR Open Document Open Filing 11 May 2018 31 Mar 2018 028-00398
SC 13G/A Open Document Open Filing ISTAR INC 13G/A 10 May 2018
SC 13G/A Open Document Open Filing VARIAN MEDICAL SYSTEMS 13G/A 14 Feb 2018
SC 13G/A Open Document Open Filing SEI 13G/A 14 Feb 2018
SC 13G/A Open Document Open Filing OLD REPUBLIC INTL CORP 13G/A 14 Feb 2018
SC 13G/A Open Document Open Filing FACTSET RESEARCH 13G/A 14 Feb 2018
SC 13G/A Open Document Open Filing EXPEDITORS INTL WASH INC 13G/A 14 Feb 2018
SC 13G Open Document Open Filing AUTODESK INC 13G 14 Feb 2018
13F-HR Open Document Open Filing 14 Feb 2018 31 Dec 2017 028-00398
SC 13G/A Open Document Open Filing ISTAR INC 13G/A 09 Feb 2018
SC 13G Open Document Open Filing ISTAR INC 13G 31 Jan 2018
13F-HR Open Document Open Filing 14 Nov 2017 30 Sep 2017 028-00398
13F-HR Open Document Open Filing 14 Aug 2017 30 Jun 2017 028-00398
SC 13G/A Open Document Open Filing HERCULES OFFSHORE 13G/A 09 Aug 2017
SC 13G/A Open Document Open Filing 07 Jul 2017
13F-HR Open Document Open Filing 12 May 2017 31 Mar 2017 028-00398
SC 13G/A Open Document Open Filing VARIAN MEDICAL 13G/A 14 Feb 2017
SC 13G/A Open Document Open Filing SEI 13G/A 14 Feb 2017
SC 13G/A Open Document Open Filing OLD REPUBLIC INTL CORP 13G/A 14 Feb 2017
SC 13G/A Open Document Open Filing HERCULES OFFSHORE 13G/A 14 Feb 2017
SC 13G/A Open Document Open Filing HAWAIIN TELECOM 13G/A 14 Feb 2017
SC 13G/A Open Document Open Filing FACTSET RESEARCH 13G/A 14 Feb 2017
SC 13G/A Open Document Open Filing EXPEDITORS INTL WASH 13G/A 14 Feb 2017
SC 13G/A Open Document Open Filing CIENA CORP 13G/A 14 Feb 2017
13F-HR Open Document Open Filing 14 Feb 2017 31 Dec 2016 028-00398
SC 13G/A Open Document Open Filing ROVI CORP 13G/A 09 Dec 2016
SC 13G/A Open Document Open Filing GREENHILL 13G/A 09 Dec 2016
13F-HR Open Document Open Filing 14 Nov 2016 30 Sep 2016 028-00398
13F-HR Open Document Open Filing 12 Aug 2016 30 Jun 2016 028-00398
SC 13G/A Open Document Open Filing ICONIX BRAND GROUP INC 13G/A 09 Aug 2016
13F-HR Open Document Open Filing 13 May 2016 31 Mar 2016 028-00398
SC 13G Open Document Open Filing VARIAN MEDICAL 13G 12 Feb 2016
SC 13G Open Document Open Filing ICONIX BRAND 13G 12 Feb 2016
SC 13G Open Document Open Filing EXPEDITORS 13G 12 Feb 2016
SC 13G Open Document Open Filing ROVI CORP 13G 12 Feb 2016
SC 13G/A Open Document Open Filing FACTSET RESEARCH 13G/A 12 Feb 2016
SC 13G/A Open Document Open Filing HAWAIIANTELECOM 13G/A 12 Feb 2016
SC 13G/A Open Document Open Filing SEI 13G/A 12 Feb 2016
SC 13G/A Open Document Open Filing OLD REPUBLIC INTL CORP 13G/A 12 Feb 2016
SC 13G/A Open Document Open Filing GREENHILL 13G/A 12 Feb 2016
SC 13G/A Open Document Open Filing HERCULES OFFSHORE INC 13G/A 12 Feb 2016
SC 13G/A Open Document Open Filing CIENA CORP 13G/A 2015 12 Feb 2016
13F-HR Open Document Open Filing 12 Feb 2016 31 Dec 2015 028-00398
SC 13G Open Document Open Filing HERCULES OFFSHORE INC 13G 10 Dec 2015
SC 13G/A Open Document Open Filing 13 Nov 2015
13F-HR Open Document Open Filing 13 Nov 2015 30 Sep 2015 028-00398
SC 13G/A Open Document Open Filing 10 Sep 2015
13F-HR Open Document Open Filing 14 Aug 2015 30 Jun 2015 028-00398
13F-HR Open Document Open Filing 14 May 2015 31 Mar 2015 028-00398
SC 13G Open Document Open Filing 17 Feb 2015
SC 13G Open Document Open Filing 17 Feb 2015
SC 13G Open Document Open Filing 17 Feb 2015
SC 13G Open Document Open Filing 17 Feb 2015
SC 13G/A Open Document Open Filing 17 Feb 2015
SC 13G/A Open Document Open Filing 17 Feb 2015
SC 13G/A Open Document Open Filing 17 Feb 2015
SC 13G/A Open Document Open Filing 17 Feb 2015
13F-HR Open Document Open Filing 17 Feb 2015 31 Dec 2014 028-00398
13F-HR/A Open Document Open Filing 18 Dec 2014 30 Sep 2014 028-00398
13F-HR Open Document Open Filing 14 Nov 2014 30 Sep 2014 028-00398
SC 13G/A Open Document Open Filing 10 Sep 2014
SC 13G/A Open Document Open Filing 10 Sep 2014
13F-HR Open Document Open Filing 14 Aug 2014 30 Jun 2014 028-00398
SC 13G/A Open Document Open Filing 16 May 2014
SC 13G Open Document Open Filing 15 May 2014
13F-HR Open Document Open Filing 15 May 2014 31 Mar 2014 028-00398
SC 13G/A Open Document Open Filing 12 Feb 2014
SC 13G/A Open Document Open Filing 12 Feb 2014
SC 13G/A Open Document Open Filing 12 Feb 2014
13F-HR Open Document Open Filing 12 Feb 2014 31 Dec 2013 028-00398