David A. Duffield

Business address
C/O Workday, Inc., 6230 Stoneridge Mall Road, Pleasanton, CA, 94588
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David A. Duffield has filed 334 SEC EDGAR filings since 2/17/1998

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing FORM 4 Dec 4, 2025 Dec 2, 2025 001-35680
144 Open Document Open Filing Dec 2, 2025
4 Open Document Open Filing FORM 4 Oct 10, 2025 Oct 8, 2025 001-35680
144 Open Document Open Filing Oct 8, 2025
4 Open Document Open Filing FORM 4 Oct 3, 2025 Oct 1, 2025 001-35680
144 Open Document Open Filing Oct 1, 2025
4 Open Document Open Filing FORM 4 Sep 25, 2025 Sep 23, 2025 001-35680
144 Open Document Open Filing Sep 23, 2025
4 Open Document Open Filing FORM 4 Sep 17, 2025 Sep 15, 2025 001-35680
144 Open Document Open Filing Sep 16, 2025
144 Open Document Open Filing Sep 15, 2025
4 Open Document Open Filing FORM 4 Sep 4, 2025 Sep 2, 2025 001-35680
144 Open Document Open Filing Sep 2, 2025
4 Open Document Open Filing FORM 4 Jul 10, 2025 Jul 8, 2025 001-35680
144 Open Document Open Filing Jul 8, 2025
4 Open Document Open Filing FORM 4 Jul 3, 2025 Jul 1, 2025 001-35680
144 Open Document Open Filing Jul 1, 2025
4 Open Document Open Filing FORM 4 Jun 26, 2025 Jun 24, 2025 001-35680
144 Open Document Open Filing Jun 24, 2025
4 Open Document Open Filing FORM 4 Jun 18, 2025 Jun 16, 2025 001-35680
144 Open Document Open Filing Jun 17, 2025
144 Open Document Open Filing Jun 16, 2025
4 Open Document Open Filing FORM 4 Jun 3, 2025 Jun 2, 2025 001-35680
144 Open Document Open Filing Jun 2, 2025
4 Open Document Open Filing FORM 4 Apr 10, 2025 Apr 8, 2025 001-35680
144 Open Document Open Filing Apr 8, 2025
4 Open Document Open Filing FORM 4 Apr 3, 2025 Apr 1, 2025 001-35680
144 Open Document Open Filing Apr 1, 2025
4 Open Document Open Filing FORM 4 Mar 26, 2025 Mar 24, 2025 001-35680
144 Open Document Open Filing Mar 24, 2025
4 Open Document Open Filing FORM 4 Mar 18, 2025 Mar 14, 2025 001-35680
144 Open Document Open Filing Mar 17, 2025
144 Open Document Open Filing Mar 14, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025 001-35680
144 Open Document Open Filing Mar 3, 2025
SCHEDULE 13G/A Open Document Open Filing Feb 12, 2025
4 Open Document Open Filing FORM 4 Jan 15, 2025 Jan 13, 2025 001-35680
144 Open Document Open Filing Jan 13, 2025
4 Open Document Open Filing FORM 4 Jan 10, 2025 Jan 8, 2025 001-35680
144 Open Document Open Filing Jan 8, 2025
4 Open Document Open Filing FORM 4 Jan 7, 2025 Jan 6, 2025 001-35680
4 Open Document Open Filing FORM 4 Jan 6, 2025 Jan 2, 2025 001-35680
144 Open Document Open Filing Jan 6, 2025
144 Open Document Open Filing Jan 2, 2025
4 Open Document Open Filing FORM 4 Dec 31, 2024 Dec 30, 2024 001-35680
144 Open Document Open Filing Dec 30, 2024
4 Open Document Open Filing FORM 4 Dec 26, 2024 Dec 23, 2024 001-35680
144 Open Document Open Filing Dec 23, 2024
4 Open Document Open Filing FORM 4 Dec 20, 2024 Dec 18, 2024 001-35680
144 Open Document Open Filing Dec 18, 2024
4 Open Document Open Filing FORM 4 Dec 18, 2024 Dec 16, 2024 001-35680
144 Open Document Open Filing Dec 16, 2024
4 Open Document Open Filing FORM 4 Dec 4, 2024 Dec 2, 2024 001-35680
144 Open Document Open Filing Dec 2, 2024
4 Open Document Open Filing FORM 4 Oct 15, 2024 Oct 14, 2024 001-35680
144 Open Document Open Filing Oct 15, 2024
4 Open Document Open Filing FORM 4 Oct 9, 2024 Oct 7, 2024 001-35680
144 Open Document Open Filing Oct 8, 2024
144 Open Document Open Filing Oct 7, 2024
4 Open Document Open Filing FORM 4 Oct 2, 2024 Sep 30, 2024 001-35680
144 Open Document Open Filing Oct 1, 2024
144 Open Document Open Filing Sep 30, 2024
4 Open Document Open Filing FORM 4 Sep 25, 2024 Sep 23, 2024 001-35680
144 Open Document Open Filing Sep 23, 2024
4 Open Document Open Filing FORM 4 Sep 20, 2024 Sep 18, 2024 001-35680
144 Open Document Open Filing Sep 18, 2024
4 Open Document Open Filing FORM 4 Sep 18, 2024 Sep 16, 2024 001-35680
144 Open Document Open Filing Sep 16, 2024
4 Open Document Open Filing FORM 4 Sep 5, 2024 Sep 3, 2024 001-35680
144 Open Document Open Filing Sep 3, 2024
4 Open Document Open Filing FORM 4 Jul 16, 2024 Jul 12, 2024 001-35680
144 Open Document Open Filing Jul 12, 2024
4 Open Document Open Filing FORM 4 Jul 9, 2024 Jul 5, 2024 001-35680
144 Open Document Open Filing Jul 8, 2024
144 Open Document Open Filing Jul 5, 2024
4 Open Document Open Filing FORM 4 Jul 3, 2024 Jun 28, 2024 001-35680
144 Open Document Open Filing Jul 1, 2024
144 Open Document Open Filing Jun 28, 2024
4 Open Document Open Filing FORM 4 Jun 25, 2024 Jun 21, 2024 001-35680
144 Open Document Open Filing Jun 21, 2024
4 Open Document Open Filing FORM 4 Jun 20, 2024 Jun 17, 2024 001-35680
4 Open Document Open Filing FORM 4 Jun 17, 2024 Jun 14, 2024 001-35680
144 Open Document Open Filing Jun 17, 2024
144 Open Document Open Filing Jun 14, 2024
4 Open Document Open Filing FORM 4 Jun 5, 2024 Jun 3, 2024 001-35680
144 Open Document Open Filing Jun 3, 2024
4 Open Document Open Filing FORM 4 Apr 16, 2024 Apr 12, 2024 001-35680
144 Open Document Open Filing Apr 12, 2024
4 Open Document Open Filing FORM 4 Apr 9, 2024 Apr 5, 2024 001-35680
144 Open Document Open Filing Apr 8, 2024
144 Open Document Open Filing Apr 5, 2024
4 Open Document Open Filing FORM 4 Apr 3, 2024 Apr 1, 2024 001-35680
144 Open Document Open Filing Apr 1, 2024
144 Open Document Open Filing Apr 1, 2024
4 Open Document Open Filing FORM 4 Mar 26, 2024 Mar 22, 2024 001-35680
144 Open Document Open Filing Mar 22, 2024
4 Open Document Open Filing FORM 4 Mar 19, 2024 Mar 15, 2024 001-35680
144 Open Document Open Filing Mar 18, 2024
144 Open Document Open Filing Mar 15, 2024
4 Open Document Open Filing FORM 4 Mar 5, 2024 Mar 1, 2024 001-35680
144 Open Document Open Filing Mar 1, 2024
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2024
4 Open Document Open Filing FORM 4 Jan 12, 2024 Jan 10, 2024 001-35680
144 Open Document Open Filing Jan 12, 2024
144 Open Document Open Filing Jan 10, 2024
4 Open Document Open Filing FORM 4 Jan 9, 2024 Jan 5, 2024 001-35680
144 Open Document Open Filing Jan 8, 2024
144 Open Document Open Filing Jan 5, 2024
4 Open Document Open Filing FORM 4 Dec 13, 2023 Dec 11, 2023 001-35680
144 Open Document Open Filing Dec 11, 2023
4 Open Document Open Filing FORM 4 Dec 6, 2023 Dec 4, 2023 001-35680
4 Open Document Open Filing FORM 4 Oct 2, 2023 Sep 28, 2023 001-35680
4 Open Document Open Filing FORM 4 Sep 13, 2023 Sep 11, 2023 001-35680
144 Open Document Open Filing Sep 11, 2023
4 Open Document Open Filing FORM 4 Jun 14, 2023 Jun 12, 2023 001-35680
144 Open Document Open Filing Jun 12, 2023
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2023
4 Open Document Open Filing FORM 4 Dec 19, 2022 Dec 15, 2022 001-35680
4 Open Document Open Filing FORM 4 Dec 5, 2022 Dec 1, 2022 001-35680
4 Open Document Open Filing FORM 4 Sep 19, 2022 Sep 15, 2022 001-35680
4 Open Document Open Filing FORM 4 Jun 16, 2022 Jun 15, 2022 001-35680
4/A Open Document Open Filing FORM 4/A May 12, 2022 Mar 2, 2022 001-35680
4 Open Document Open Filing OWNERSHIP DOCUMENT Apr 5, 2022 Apr 1, 2022 001-35680
4 Open Document Open Filing FORM 4 Mar 17, 2022 Mar 15, 2022 001-35680
4 Open Document Open Filing FORM 4 Mar 4, 2022 Mar 2, 2022 001-35680
SC 13G/A Open Document Open Filing SC 13G/A Feb 11, 2022
4 Open Document Open Filing FORM 4 Jan 6, 2022 Jan 4, 2022 001-35680
4 Open Document Open Filing FORM 4 Dec 17, 2021 Dec 15, 2021 001-35680
4 Open Document Open Filing FORM 4 Dec 3, 2021 Dec 1, 2021 001-35680
4 Open Document Open Filing FORM 4 Oct 5, 2021 Oct 1, 2021 001-35680
4 Open Document Open Filing FORM 4 Sep 17, 2021 Sep 15, 2021 001-35680
4 Open Document Open Filing FORM 4 Sep 2, 2021 Sep 1, 2021 001-35680
4 Open Document Open Filing FORM 4 Jul 1, 2021 Jul 1, 2021 001-35680
4 Open Document Open Filing FORM 4 Jun 17, 2021 Jun 15, 2021 001-35680
4 Open Document Open Filing FORM 4 Jun 10, 2021 Jun 8, 2021 001-35680
4/A Open Document Open Filing FORM 4/A Jun 10, 2021 Jun 1, 2021 001-35680
4 Open Document Open Filing FORM 4 Jun 3, 2021 Jun 1, 2021 001-35680
4 Open Document Open Filing FORM 4 Apr 5, 2021 Apr 1, 2021 001-35680
4 Open Document Open Filing FORM 4 Mar 18, 2021 Mar 16, 2021 001-35680
4 Open Document Open Filing FORM 4 Mar 3, 2021 Mar 1, 2021 001-35680
SC 13G/A Open Document Open Filing SC 13G/A Feb 9, 2021
4 Open Document Open Filing FORM 4 Jan 6, 2021 Jan 4, 2021 001-35680
4 Open Document Open Filing FORM 4 Dec 17, 2020 Dec 15, 2020 001-35680
4 Open Document Open Filing FORM 4 Dec 3, 2020 Dec 1, 2020 001-35680
4 Open Document Open Filing FORM 4 Oct 2, 2020 Oct 1, 2020 001-35680
4 Open Document Open Filing FORM 4 Sep 17, 2020 Sep 15, 2020 001-35680
4 Open Document Open Filing FORM 4 Sep 3, 2020 Sep 1, 2020 001-35680
4 Open Document Open Filing FORM 4 Jul 6, 2020 Jul 1, 2020 001-35680
4 Open Document Open Filing FORM 4 Jun 17, 2020 Jun 15, 2020 001-35680
4 Open Document Open Filing FORM 4 Jun 11, 2020 Jun 9, 2020 001-35680
4 Open Document Open Filing FORM 4 Jun 2, 2020 Jun 1, 2020 001-35680
4 Open Document Open Filing FORM 4 Apr 17, 2020 Apr 15, 2020 001-35680
4 Open Document Open Filing FORM 4 Apr 3, 2020 Apr 1, 2020 001-35680
4 Open Document Open Filing FORM 4 Mar 18, 2020 Mar 16, 2020 001-35680
4 Open Document Open Filing FORM 4 Mar 4, 2020 Mar 2, 2020 001-35680
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2020
4 Open Document Open Filing FORM 4 Jan 17, 2020 Jan 15, 2020 001-35680
4 Open Document Open Filing FORM 4 Jan 9, 2020 Dec 31, 2019 001-35680
4 Open Document Open Filing FORM 4 Dec 16, 2019 Dec 6, 2019 001-35680
4 Open Document Open Filing FORM 4 Dec 9, 2019 Dec 5, 2019 001-35680
4 Open Document Open Filing FORM 4 Oct 17, 2019 Oct 15, 2019 001-35680
4 Open Document Open Filing FORM 4 Oct 4, 2019 Oct 2, 2019 001-35680
4 Open Document Open Filing FORM 4 Sep 13, 2019 Sep 12, 2019 001-35680
4 Open Document Open Filing FORM 4 Sep 6, 2019 Sep 4, 2019 001-35680
4 Open Document Open Filing FORM 4 Jul 17, 2019 Jul 15, 2019 001-35680
4 Open Document Open Filing FORM 4 Jul 10, 2019 Jul 8, 2019 001-35680
4/A Open Document Open Filing FORM 4/A Jul 10, 2019 Jun 18, 2019 001-35680
4 Open Document Open Filing FORM 4 Jun 20, 2019 Jun 18, 2019 001-35680
4 Open Document Open Filing FORM 4 Jun 17, 2019 Jun 13, 2019 001-35680
4 Open Document Open Filing FORM 4 Jun 7, 2019 Jun 5, 2019 001-35680
4 Open Document Open Filing FORM 4 May 17, 2019 May 15, 2019 001-35680
4 Open Document Open Filing FORM 4 Apr 17, 2019 Apr 15, 2019 001-35680
4 Open Document Open Filing FORM 4 Apr 5, 2019 Apr 3, 2019 001-35680
4 Open Document Open Filing FORM 4 Mar 19, 2019 Mar 15, 2019 001-35680
4 Open Document Open Filing FORM 4 Mar 6, 2019 Mar 4, 2019 001-35680
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2019
4 Open Document Open Filing FORM 4 Jan 17, 2019 Jan 15, 2019 001-35680
4 Open Document Open Filing FORM 4 Jan 9, 2019 Jan 7, 2019 001-35680
4 Open Document Open Filing FORM 4 Dec 11, 2018 Dec 7, 2018 001-35680
4 Open Document Open Filing FORM 4 Oct 17, 2018 Oct 15, 2018 001-35680
4 Open Document Open Filing FORM 4 Oct 10, 2018 Oct 8, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Sep 11, 2018 Sep 7, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jul 18, 2018 Jul 16, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jul 11, 2018 Jul 9, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jun 22, 2018 Jun 20, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jun 8, 2018 Jun 6, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION May 17, 2018 May 15, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Apr 18, 2018 Apr 16, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Apr 9, 2018 Apr 5, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Mar 9, 2018 Mar 7, 2018 001-35680
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2018
4 Open Document Open Filing FORM 4 SUBMISSION Jan 18, 2018 Jan 16, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jan 10, 2018 Jan 8, 2018 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Dec 11, 2017 Dec 7, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Oct 18, 2017 Oct 16, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Oct 11, 2017 Oct 9, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Sep 11, 2017 Sep 7, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Aug 17, 2017 Aug 15, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jul 19, 2017 Jul 17, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jul 11, 2017 Jul 7, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jun 22, 2017 Jun 20, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jun 9, 2017 Jun 7, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION May 17, 2017 May 15, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Apr 19, 2017 Apr 17, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Apr 11, 2017 Apr 7, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Mar 3, 2017 Mar 1, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Feb 17, 2017 Feb 15, 2017 001-35680
SC 13G/A Open Document Open Filing AMENDMENT NO. 4 TO SCHEDULE 13G Feb 14, 2017
4 Open Document Open Filing FORM 4 SUBMISSION Jan 19, 2017 Jan 17, 2017 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Dec 20, 2016 Dec 16, 2016 001-35680
4/A Open Document Open Filing FORM 4/A SUBMISSION Dec 19, 2016 Dec 13, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Dec 15, 2016 Dec 13, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Dec 7, 2016 Dec 5, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Nov 17, 2016 Nov 15, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Oct 19, 2016 Oct 17, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Sep 19, 2016 Sep 15, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Sep 8, 2016 Sep 6, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Aug 30, 2016 Aug 26, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Aug 17, 2016 Aug 15, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jul 19, 2016 Jul 15, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jun 17, 2016 Jun 15, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jun 6, 2016 Jun 2, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION May 18, 2016 May 16, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Apr 19, 2016 Apr 15, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Mar 17, 2016 Mar 15, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Mar 4, 2016 Mar 2, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Feb 18, 2016 Feb 16, 2016 001-35680
SC 13G/A Open Document Open Filing SC 13G/A Feb 12, 2016
4 Open Document Open Filing FORM 4 SUBMISSION Jan 15, 2016 Jan 15, 2016 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Dec 1, 2015 Nov 27, 2015 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Nov 24, 2015 Nov 23, 2015 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Nov 18, 2015 Nov 16, 2015 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Sep 1, 2015 Aug 28, 2015 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jun 2, 2015 May 29, 2015 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Mar 26, 2015 Mar 24, 2015 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Mar 3, 2015 Feb 27, 2015 001-35680
SC 13G/A Open Document Open Filing SCHEDULE 13G AMENDMENT NO: 2 Feb 17, 2015
4 Open Document Open Filing FORM 4 SUBMISSION Jul 2, 2014 Jun 30, 2014 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Jun 2, 2014 May 29, 2014 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Apr 15, 2014 Apr 15, 2014 001-35680
4 Open Document Open Filing FORM 4 SUBMISSION Mar 4, 2014 Feb 28, 2014 001-35680
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2014
4 Open Document Open Filing FORM 4 SUBMISSION Jan 8, 2014 Jan 6, 2014 001-35680