David B. Roberts

Business address
55 Bradford Street, Needham, MA, 02492
Top holdings (ownership)
LMAT
⭐ Add to watchlist ⭐
Get insider transactions for this reporting owner
David B. Roberts has filed 187 SEC EDGAR filings since 18 Oct 2006

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing 4 15 Dec 2025 11 Dec 2025 001-33092
4 Open Document Open Filing 4 11 Dec 2025 10 Dec 2025 001-33092
4 Open Document Open Filing 4 10 Dec 2025 08 Dec 2025 001-33092
4 Open Document Open Filing 4 08 Dec 2025 04 Dec 2025 001-33092
4 Open Document Open Filing FORM 4 05 Dec 2025 03 Dec 2025 001-42437
4 Open Document Open Filing 4 03 Dec 2025 02 Dec 2025 001-33092
4 Open Document Open Filing FORM 4 08 Sep 2025 04 Sep 2025 001-33092
4 Open Document Open Filing FORM 4 13 Aug 2025 11 Aug 2025 001-33092
144 Open Document Open Filing 11 Aug 2025
3 Open Document Open Filing FORM 3 10 Jun 2025 07 Jun 2025 001-42437
4 Open Document Open Filing FORM 4 02 Jun 2025 29 May 2025 001-33092
4 Open Document Open Filing FORM 4 31 Mar 2025 27 Mar 2025 001-33092
4 Open Document Open Filing FORM 4 11 Mar 2025 07 Mar 2025 001-33092
4 Open Document Open Filing FORM 4 04 Mar 2025 28 Feb 2025 001-33092
4 Open Document Open Filing FORM 4 20 Feb 2025 18 Feb 2025 001-33092
4 Open Document Open Filing FORM 4 26 Dec 2024 20 Dec 2024 001-33092
4 Open Document Open Filing FORM 4 13 Dec 2024 11 Dec 2024 001-33092
4 Open Document Open Filing FORM 4 11 Dec 2024 09 Dec 2024 001-33092
4 Open Document Open Filing FORM 4 10 Dec 2024 06 Dec 2024 001-33092
4 Open Document Open Filing FORM 4 09 Dec 2024 05 Dec 2024 001-33092
4 Open Document Open Filing FORM 4 04 Dec 2024 02 Dec 2024 001-33092
4 Open Document Open Filing FORM 4 03 Sep 2024 29 Aug 2024 001-33092
4 Open Document Open Filing FORM 4 15 Aug 2024 13 Aug 2024 001-33092
144 Open Document Open Filing 13 Aug 2024
4 Open Document Open Filing FORM 4 03 Jun 2024 30 May 2024 001-33092
4 Open Document Open Filing FORM 4 08 May 2024 06 May 2024 001-33092
144 Open Document Open Filing 06 May 2024
4 Open Document Open Filing FORM 4 01 Apr 2024 28 Mar 2024 001-33092
4 Open Document Open Filing FORM 4 04 Mar 2024 29 Feb 2024 001-33092
4 Open Document Open Filing FORM 4 15 Feb 2024 13 Feb 2024 001-33092
4 Open Document Open Filing FORM 4 21 Dec 2023 19 Dec 2023 001-33092
4 Open Document Open Filing FORM 4 13 Dec 2023 11 Dec 2023 001-33092
4 Open Document Open Filing FORM 4 12 Dec 2023 08 Dec 2023 001-33092
4 Open Document Open Filing FORM 4 05 Dec 2023 02 Dec 2023 001-33092
4 Open Document Open Filing FORM 4 04 Dec 2023 30 Nov 2023 001-33092
4 Open Document Open Filing FORM 4 05 Sep 2023 01 Sep 2023 001-33092
4 Open Document Open Filing FORM 4 05 Jun 2023 01 Jun 2023 001-33092
4 Open Document Open Filing FORM 4 08 May 2023 04 May 2023 001-33092
144 Open Document Open Filing 04 May 2023
144 Open Document Open Filing 04 May 2023
4 Open Document Open Filing FORM 4 27 Mar 2023 23 Mar 2023 001-33092
4 Open Document Open Filing FORM 4 01 Mar 2023 27 Feb 2023 001-33092
4 Open Document Open Filing FORM 4 09 Jan 2023 06 Jan 2023 001-33092
4 Open Document Open Filing FORM 4 27 Dec 2022 22 Dec 2022 001-33092
4 Open Document Open Filing FORM 4 21 Dec 2022 19 Dec 2022 001-33092
4 Open Document Open Filing FORM 4 13 Dec 2022 11 Dec 2022 001-33092
4 Open Document Open Filing FORM 4 06 Dec 2022 02 Dec 2022 001-33092
4 Open Document Open Filing FORM 4 05 Dec 2022 01 Dec 2022 001-33092
4 Open Document Open Filing FORM 4 08 Nov 2022 07 Nov 2022 001-33092
4 Open Document Open Filing FORM 4 12 Sep 2022 08 Sep 2022 001-33092
4 Open Document Open Filing FORM 4 06 Jun 2022 02 Jun 2022 001-33092
4 Open Document Open Filing FORM 4 28 Mar 2022 24 Mar 2022 001-33092
4 Open Document Open Filing FORM 4 01 Mar 2022 25 Feb 2022 001-33092
4 Open Document Open Filing FORM 4 27 Dec 2021 22 Dec 2021 001-33092
4 Open Document Open Filing FORM 4 21 Dec 2021 19 Dec 2021 001-33092
4 Open Document Open Filing FORM 4 14 Dec 2021 11 Dec 2021 001-33092
4 Open Document Open Filing FORM 4 06 Dec 2021 02 Dec 2021 001-33092
4 Open Document Open Filing FORM 4 04 Nov 2021 03 Nov 2021 001-33092
4 Open Document Open Filing FORM 4 13 Sep 2021 09 Sep 2021 001-33092
4 Open Document Open Filing FORM 4 30 Jul 2021 25 Jul 2021 001-33092
4 Open Document Open Filing FORM 4 07 Jun 2021 03 Jun 2021 001-33092
4 Open Document Open Filing FORM 4 05 May 2021 03 May 2021 001-33092
4 Open Document Open Filing FORM 4 29 Mar 2021 25 Mar 2021 001-33092
4 Open Document Open Filing FORM 4 11 Mar 2021 09 Mar 2021 001-33092
4 Open Document Open Filing FORM 4 03 Mar 2021 01 Mar 2021 001-33092
4/A Open Document Open Filing FORM 4/A 08 Jan 2021 19 Dec 2020 001-33092
4/A Open Document Open Filing FORM 4/A 28 Dec 2020 19 Dec 2020 001-33092
4 Open Document Open Filing FORM 4 23 Dec 2020 19 Dec 2020 001-33092
4 Open Document Open Filing FORM 4 04 Dec 2020 02 Dec 2020 001-33092
4 Open Document Open Filing FORM 4 23 Oct 2020 21 Oct 2020 001-33092
4 Open Document Open Filing FORM 4 14 Sep 2020 10 Sep 2020 001-33092
4 Open Document Open Filing FORM 4 17 Aug 2020 14 Aug 2020 001-33092
4 Open Document Open Filing FORM 4 28 Jul 2020 25 Jul 2020 001-33092
4 Open Document Open Filing FORM 4 08 Jun 2020 04 Jun 2020 001-33092
4 Open Document Open Filing FORM 4 23 Mar 2020 19 Mar 2020 001-33092
4 Open Document Open Filing FORM 4 26 Dec 2019 22 Dec 2019 001-33092
4 Open Document Open Filing FORM 4 23 Dec 2019 19 Dec 2019 001-33092
4 Open Document Open Filing FORM 4 09 Dec 2019 05 Dec 2019 001-33092
4 Open Document Open Filing FORM 4 27 Nov 2019 27 Nov 2019 001-33092
4 Open Document Open Filing SALE 30 Oct 2019 28 Oct 2019 001-33092
4 Open Document Open Filing FORM 4 22 Oct 2019 18 Oct 2019 001-33092
4 Open Document Open Filing FORM 4 09 Sep 2019 05 Sep 2019 001-33092
4 Open Document Open Filing FORM 4 29 Jul 2019 25 Jul 2019 001-33092
4 Open Document Open Filing DEU ACCRUAL 10 Jun 2019 06 Jun 2019 001-33092
4 Open Document Open Filing FORM 4 09 Apr 2019 05 Apr 2019 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 27 Dec 2018 22 Dec 2018 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 21 Dec 2018 19 Dec 2018 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 10 Dec 2018 06 Dec 2018 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 10 Sep 2018 06 Sep 2018 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 06 Aug 2018 02 Aug 2018 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 27 Jul 2018 25 Jul 2018 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 08 Jun 2018 07 Jun 2018 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 03 May 2018 01 May 2018 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 09 Apr 2018 05 Apr 2018 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 27 Dec 2017 22 Dec 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 11 Dec 2017 07 Dec 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 07 Nov 2017 06 Nov 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 11 Sep 2017 07 Sep 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 01 Sep 2017 30 Aug 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 08 Aug 2017 04 Aug 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 27 Jul 2017 25 Jul 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 12 Jun 2017 08 Jun 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 07 Jun 2017 05 Jun 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 12 May 2017 11 May 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 05 May 2017 03 May 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 26 Apr 2017 25 Apr 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 07 Apr 2017 06 Apr 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 10 Mar 2017 10 Mar 2017 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 07 Dec 2016 05 Dec 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 21 Nov 2016 17 Nov 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 17 Oct 2016 13 Oct 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 20 Sep 2016 16 Sep 2016 001-33092
4/A Open Document Open Filing FORM 4/A SUBMISSION 16 Sep 2016 14 Sep 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 16 Sep 2016 14 Sep 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 08 Sep 2016 06 Sep 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2016 23 Aug 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 05 Aug 2016 03 Aug 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 27 Jul 2016 25 Jul 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 09 May 2016 06 May 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 19 Apr 2016 15 Apr 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 06 Apr 2016 04 Apr 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 29 Feb 2016 25 Feb 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 14 Jan 2016 12 Jan 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 13 Jan 2016 11 Jan 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 12 Jan 2016 08 Jan 2016 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 25 Nov 2015 23 Nov 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2015 18 Nov 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 21 Aug 2015 20 Aug 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 03 Aug 2015 31 Jul 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 27 Jul 2015 23 Jul 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 09 Jun 2015 05 Jun 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 11 May 2015 07 May 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 06 May 2015 04 May 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 06 Mar 2015 06 Mar 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 04 Mar 2015 02 Mar 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 05 Jan 2015 02 Jan 2015 001-33092
4 Open Document Open Filing FORM 4 SUBMISSION 09 Dec 2014 09 Dec 2014 001-33092
4 Open Document Open Filing ROBERTS FORM 4 2014-10-31 03 Nov 2014 31 Oct 2014 001-33092
4 Open Document Open Filing ROBERTS FORM 4 2014-07-24 28 Jul 2014 24 Jul 2014 001-33092
4 Open Document Open Filing ROBERTS FORM 4 2014-5-7 09 May 2014 07 May 2014 001-33092
4 Open Document Open Filing ROBERTS FORM 4 2014-2-27 28 Feb 2014 27 Feb 2014 001-33092