| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 13F-NT | Open Document | Open Filing | Nov 14, 2025 | Sep 30, 2025 | 028-16056 | |
| N-PX | Open Document | Open Filing | Aug 29, 2025 | Jun 30, 2025 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2025 | Jun 30, 2025 | 028-16056 | |
| SCHEDULE 13G/A | Open Document | Open Filing | Aug 13, 2025 | |||
| 4 | Open Document | Open Filing | 4 | May 21, 2025 | May 19, 2025 | 001-40951 |
| 13F-NT | Open Document | Open Filing | May 15, 2025 | Mar 31, 2025 | 028-16056 | |
| 4 | Open Document | Open Filing | 4 | Apr 17, 2025 | Apr 15, 2025 | 001-40951 |
| 13F-NT | Open Document | Open Filing | Feb 14, 2025 | Dec 31, 2024 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Nov 14, 2024 | Sep 30, 2024 | 028-16056 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Nov 13, 2024 | ||
| N-PX | Open Document | Open Filing | Aug 30, 2024 | Jun 30, 2024 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2024 | Jun 30, 2024 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | May 15, 2024 | Mar 31, 2024 | 028-16056 | |
| 4 | Open Document | Open Filing | 4 | May 6, 2024 | May 2, 2024 | 001-40951 |
| 4 | Open Document | Open Filing | 4 | Mar 6, 2024 | Mar 4, 2024 | 001-40951 |
| 13F-NT | Open Document | Open Filing | Feb 14, 2024 | Dec 31, 2023 | 028-16056 | |
| SC 13G/A | Open Document | Open Filing | Feb 13, 2024 | |||
| SC 13G/A | Open Document | Open Filing | Feb 13, 2024 | |||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 13, 2024 | ||
| 13F-NT | Open Document | Open Filing | Nov 14, 2023 | Sep 30, 2023 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2023 | Jun 30, 2023 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | May 15, 2023 | Mar 31, 2023 | 028-16056 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 6, 2023 | Apr 4, 2023 | 001-40951 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 14, 2023 | Mar 10, 2023 | 001-40951 |
| SC 13G/A | Open Document | Open Filing | Feb 14, 2023 | |||
| SC 13G | Open Document | Open Filing | Feb 14, 2023 | |||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 14, 2023 | ||
| 13F-NT | Open Document | Open Filing | Feb 14, 2023 | Dec 31, 2022 | 028-16056 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 21, 2022 | Nov 17, 2022 | 001-40951 |
| 13F-NT | Open Document | Open Filing | Nov 14, 2022 | Sep 30, 2022 | 028-16056 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 15, 2022 | Sep 13, 2022 | 001-40951 |
| SC 13D/A | Open Document | Open Filing | Sep 9, 2022 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 18, 2022 | Aug 16, 2022 | 001-40951 |
| SC 13D/A | Open Document | Open Filing | Aug 18, 2022 | |||
| 13F-NT | Open Document | Open Filing | Aug 15, 2022 | Jun 30, 2022 | 028-16056 | |
| SC 13D/A | Open Document | Open Filing | Jun 14, 2022 | |||
| 13F-NT | Open Document | Open Filing | May 13, 2022 | Mar 31, 2022 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Feb 14, 2022 | Dec 31, 2021 | 028-16056 | |
| SC 13G | Open Document | Open Filing | SC 13G | Feb 14, 2022 | ||
| SC 13G/A | Open Document | Open Filing | Feb 14, 2022 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 20, 2022 | Jan 18, 2022 | 001-40951 |
| 4 | Open Document | Open Filing | Dec 16, 2021 | Dec 14, 2021 | 001-36557 | |
| SC 13D/A | Open Document | Open Filing | Dec 16, 2021 | |||
| 13F-NT | Open Document | Open Filing | Nov 15, 2021 | Sep 30, 2021 | 028-16056 | |
| 4 | Open Document | Open Filing | Nov 15, 2021 | Nov 11, 2021 | 001-36557 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 27, 2021 | Oct 25, 2021 | 001-40951 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Oct 21, 2021 | Oct 21, 2021 | 001-40951 |
| SC 13D/A | Open Document | Open Filing | Sep 16, 2021 | |||
| 4 | Open Document | Open Filing | Sep 16, 2021 | Sep 14, 2021 | 001-36557 | |
| 13F-NT | Open Document | Open Filing | Aug 16, 2021 | Jun 30, 2021 | 028-16056 | |
| SC 13D/A | Open Document | Open Filing | Jul 26, 2021 | |||
| 13F-NT | Open Document | Open Filing | May 17, 2021 | Mar 31, 2021 | 028-16056 | |
| 4 | Open Document | Open Filing | Mar 12, 2021 | Mar 10, 2021 | 001-36557 | |
| SC 13D/A | Open Document | Open Filing | Mar 12, 2021 | |||
| 4 | Open Document | Open Filing | Feb 22, 2021 | Feb 18, 2021 | 001-36557 | |
| SC 13G | Open Document | Open Filing | Feb 16, 2021 | |||
| 13F-NT | Open Document | Open Filing | Feb 16, 2021 | Dec 31, 2020 | 028-16056 | |
| 4 | Open Document | Open Filing | Dec 14, 2020 | Dec 10, 2020 | 001-36557 | |
| SC 13D/A | Open Document | Open Filing | Dec 14, 2020 | |||
| 4 | Open Document | Open Filing | Nov 18, 2020 | Nov 16, 2020 | 001-36557 | |
| 13F-NT | Open Document | Open Filing | Nov 16, 2020 | Sep 30, 2020 | 028-16056 | |
| 4 | Open Document | Open Filing | Nov 13, 2020 | Nov 11, 2020 | 001-36557 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2020 | Jun 30, 2020 | 028-16056 | |
| 4 | Open Document | Open Filing | Jun 15, 2020 | Jun 11, 2020 | 001-36557 | |
| 13F-NT | Open Document | Open Filing | May 15, 2020 | Mar 31, 2020 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Feb 14, 2020 | Dec 31, 2019 | 028-16056 | |
| SC 13D/A | Open Document | Open Filing | Nov 26, 2019 | |||
| 13F-NT | Open Document | Open Filing | Nov 14, 2019 | Sep 30, 2019 | 028-16056 | |
| 4 | Open Document | Open Filing | Oct 7, 2019 | Oct 3, 2019 | 001-36557 | |
| 4 | Open Document | Open Filing | Oct 3, 2019 | Oct 1, 2019 | 001-36557 | |
| 4 | Open Document | Open Filing | Sep 12, 2019 | Sep 10, 2019 | 001-36557 | |
| SC 13D/A | Open Document | Open Filing | Aug 29, 2019 | |||
| 13F-NT | Open Document | Open Filing | Aug 14, 2019 | Jun 30, 2019 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | May 15, 2019 | Mar 31, 2019 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Feb 14, 2019 | Dec 31, 2018 | 028-16056 | |
| SC 13G/A | Open Document | Open Filing | Feb 14, 2019 | |||
| 13F-NT | Open Document | Open Filing | Nov 14, 2018 | Sep 30, 2018 | 028-16056 | |
| SC 13D/A | Open Document | Open Filing | Aug 30, 2018 | |||
| 4 | Open Document | Open Filing | Aug 29, 2018 | Aug 28, 2018 | 001-36557 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2018 | Jun 30, 2018 | 028-16056 | |
| 4 | Open Document | Open Filing | Aug 1, 2018 | Jul 30, 2018 | 001-38257 | |
| SC 13D/A | Open Document | Open Filing | May 31, 2018 | |||
| 13F-NT | Open Document | Open Filing | May 15, 2018 | Mar 31, 2018 | 028-16056 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 28, 2018 | Mar 26, 2018 | 001-38257 |
| 4/A | Open Document | Open Filing | BERKSHIRE/EYE | Mar 28, 2018 | Mar 19, 2018 | 001-38257 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 21, 2018 | Mar 19, 2018 | 001-38257 |
| 13F-NT | Open Document | Open Filing | Feb 14, 2018 | Dec 31, 2017 | 028-16056 | |
| SC 13G/A | Open Document | Open Filing | Feb 14, 2018 | |||
| SC 13G | Open Document | Open Filing | Feb 14, 2018 | |||
| 13F-NT | Open Document | Open Filing | Nov 14, 2017 | Sep 30, 2017 | 028-16056 | |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 25, 2017 | Oct 25, 2017 | 001-38257 |
| 13F-NT | Open Document | Open Filing | Aug 14, 2017 | Jun 30, 2017 | 028-16056 | |
| SC 13D | Open Document | Open Filing | Aug 8, 2017 | |||
| 4 | Open Document | Open Filing | BERKSHIRE/WMS | Aug 7, 2017 | Aug 3, 2017 | 001-36557 |
| 3 | Open Document | Open Filing | BERKSHIRE/WMS | Aug 7, 2017 | Aug 3, 2017 | 001-36557 |
| SC 13D/A | Open Document | Open Filing | May 16, 2017 | |||
| 13F-NT | Open Document | Open Filing | May 15, 2017 | Mar 31, 2017 | 028-16056 | |
| SC 13G/A | Open Document | Open Filing | Feb 15, 2017 | |||
| 13F-NT | Open Document | Open Filing | Feb 14, 2017 | Dec 31, 2016 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Nov 14, 2016 | Sep 30, 2016 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Aug 15, 2016 | Jun 30, 2016 | 028-16056 | |
| SC 13D/A | Open Document | Open Filing | Aug 8, 2016 | |||
| SC 13G | Open Document | Open Filing | Jul 6, 2016 | |||
| 4 | Open Document | Open Filing | BERKSHIRE/MFRM | Jun 10, 2016 | May 31, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | BERKSHIRE/MFRM | Jun 10, 2016 | May 31, 2016 | 001-35354 |
| SC 13D/A | Open Document | Open Filing | Jun 3, 2016 | |||
| 13F-NT | Open Document | Open Filing | May 16, 2016 | Mar 31, 2016 | 028-16056 | |
| 4 | Open Document | Open Filing | BERKSHIRE / MFRM | Apr 27, 2016 | Apr 25, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | BERKSHIRE/MFRM | Apr 27, 2016 | Apr 25, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | BERKSHIRE/MFRM | Apr 13, 2016 | Apr 11, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | BERKSHIRE/MFRM | Apr 13, 2016 | Apr 11, 2016 | 001-35354 |
| SC 13D/A | Open Document | Open Filing | Apr 8, 2016 | |||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 7, 2016 | Apr 5, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 7, 2016 | Apr 5, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | BERKSHIRE/MFRM | Apr 4, 2016 | Mar 31, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | BERKSHIRE/MFRM | Apr 4, 2016 | Mar 31, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 30, 2016 | Mar 28, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 30, 2016 | Mar 28, 2016 | 001-35354 |
| SC 13D/A | Open Document | Open Filing | Mar 28, 2016 | |||
| 4 | Open Document | Open Filing | BERKSHIRE/MFRM PART 2 | Mar 24, 2016 | Mar 22, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | BERKSHIRE/MFRM | Mar 24, 2016 | Mar 22, 2016 | 001-35354 |
| 13F-NT | Open Document | Open Filing | Feb 16, 2016 | Dec 31, 2015 | 028-16056 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 9, 2016 | Feb 5, 2016 | 001-35354 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 9, 2016 | Feb 5, 2016 | 001-35354 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Feb 9, 2016 | Feb 5, 2016 | 001-35354 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Feb 9, 2016 | Feb 5, 2016 | 001-35354 |
| SC 13D | Open Document | Open Filing | SC 13D | Feb 9, 2016 | ||
| 13F-NT | Open Document | Open Filing | Nov 16, 2015 | Sep 30, 2015 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2015 | Jun 30, 2015 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | May 15, 2015 | Mar 31, 2015 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Feb 17, 2015 | Dec 31, 2014 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Nov 14, 2014 | Sep 30, 2014 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2014 | Jun 30, 2014 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | May 15, 2014 | Mar 31, 2014 | 028-16056 | |
| 13F-NT | Open Document | Open Filing | Feb 14, 2014 | Dec 31, 2013 | 028-16056 |