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| 2026-10-08 | 2026-10-07 | OLIVERA ARMANDO J | A | 24 | Not reported |
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First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.
The displayed observation date is 2026-10-07 and its public availability date is 2026-10-08. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.
This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.
Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.
Recent Form 4 activity
Inspect all 50 displayed rows: Recent Form 4 activity
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| 2026-10-08 | 2026-10-07 | OLIVERA ARMANDO J | A | 24 | Not reported |
| 2026-10-08 | 2026-10-07 | SONNENFELD JEFFREY | A | 21 | Not reported |
| 2026-10-08 | 2026-10-07 | HUDSON SHERRILL W | A | 15 | Not reported |
| 2026-10-08 | 2026-10-07 | Smith Dacona | A | 15 | Not reported |
| 2026-10-08 | 2026-10-07 | Wolfe Serena | A | 15 | Not reported |
| 2026-10-08 | 2026-10-07 | Gilliam Theron I | A | 15 | Not reported |
| 2026-10-08 | 2026-10-07 | McClure Teri P | A | 15 | Not reported |
| 2026-10-08 | 2026-10-07 | Banse Amy | A | 15 | Not reported |
| 2026-10-06 | 2026-10-01 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 3,802 | Not reported |
| 2026-10-06 | 2026-10-02 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 20,200 | Not reported |
| 2026-10-06 | 2026-10-02 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 44,300 | Not reported |
| 2026-10-06 | 2026-10-02 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 842,753 | Not reported |
| 2026-10-06 | 2026-10-02 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 342,553 | Not reported |
| 2026-10-06 | 2026-10-02 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 448,113 | Not reported |
| 2026-10-06 | 2026-10-01 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 186,991 | Not reported |
| 2026-10-06 | 2026-10-01 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 92,830 | Not reported |
| 2026-10-06 | 2026-10-02 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 299 | Not reported |
| 2026-10-06 | 2026-10-02 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 5,135 | Not reported |
| 2026-10-06 | 2026-10-02 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 2,452 | Not reported |
| 2026-10-06 | 2026-10-02 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 2,290 | Not reported |
| 2026-10-06 | 2026-10-01 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 100 | Not reported |
| 2026-10-06 | 2026-10-01 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 950 | Not reported |
| 2026-10-06 | 2026-10-01 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 425,869 | Not reported |
| 2026-09-30 | 2026-09-30 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 4,008 | Not reported |
| 2026-09-30 | 2026-09-29 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 100 | Not reported |
| 2026-09-30 | 2026-09-30 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 638,813 | Not reported |
| 2026-09-30 | 2026-09-29 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 12,289 | Not reported |
| 2026-09-30 | 2026-09-28 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 5,200 | Not reported |
| 2026-09-26 | 2026-09-25 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 7,022 | Not reported |
| 2026-09-26 | 2026-09-24 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 2,975 | Not reported |
| 2026-09-26 | 2026-09-24 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 9,415 | Not reported |
| 2026-09-26 | 2026-09-23 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 1,263 | Not reported |
| 2026-09-26 | 2026-09-25 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 171,723 | Not reported |
| 2026-09-26 | 2026-09-25 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 313,379 | Not reported |
| 2026-09-26 | 2026-09-24 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 241,692 | Not reported |
| 2026-09-26 | 2026-09-24 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 399,238 | Not reported |
| 2026-09-26 | 2026-09-23 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 532,993 | Not reported |
| 2026-09-22 | 2026-09-17 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 8,959 | Not reported |
| 2026-09-22 | 2026-09-21 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 483,809 | Not reported |
| 2026-09-22 | 2026-09-21 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 160,275 | Not reported |
| 2026-09-22 | 2026-09-18 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 7,900 | Not reported |
| 2026-09-22 | 2026-09-18 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 68,760 | Not reported |
| 2026-09-22 | 2026-09-18 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 51,586 | Not reported |
| 2026-09-22 | 2026-09-18 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 1,218,429 | Not reported |
| 2026-09-22 | 2026-09-17 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 410,164 | Not reported |
| 2026-09-22 | 2026-09-21 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 18,146 | Not reported |
| 2026-09-22 | 2026-09-21 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 4,888 | Not reported |
| 2026-09-22 | 2026-09-18 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 500 | Not reported |
| 2026-09-22 | 2026-09-18 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 710 | Not reported |
| 2026-09-22 | 2026-09-18 | BERKSHIRE HATHAWAY INC, BUFFETT WARREN E | P | 390 | Not reported |
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90-day public availability window, up to 50 records.
Recent institutional filing receipts
Inspect all 50 displayed rows: Recent institutional filing receipts
These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.
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| Cornerstone Financial Management LLC | 2026-06-30 | 2026-08-29 | 73 | $6,606 | None |
| Cornerstone Financial Management LLC | 2026-03-31 | 2026-08-29 | 42 | $3,647 | None |
| Cornerstone Financial Management LLC | 2025-12-31 | 2026-08-29 | 37 | $3,804 | None |
| B. Riley Wealth Advisors, Inc. | 2025-03-31 | 2026-08-29 | 20,217 | $2,320,539 | None |
| Advisors Asset Management, Inc. | 2021-12-31 | 2026-08-28 | 73,501 | $8,537,876 | None |
| Advisors Asset Management, Inc. | 2022-12-31 | 2026-08-28 | 22,980 | $2,079,690 | None |
| Advisors Asset Management, Inc. | 2020-06-30 | 2026-08-28 | 21 | $1,294 | None |
| Advisors Asset Management, Inc. | 2020-06-30 | 2026-08-28 | 45,100 | $2,779,062 | None |
| Advisors Asset Management, Inc. | 2022-06-30 | 2026-08-28 | 37,175 | $2,623,000 | None |
| Advisors Asset Management, Inc. | 2021-09-30 | 2026-08-28 | 71,472 | $6,695,000 | None |
| Corient Private Wealth LP | 2026-06-30 | 2026-08-28 | 22,368 | $2,024,095 | None |
| Corient Private Wealth LP | 2026-06-30 | 2026-08-28 | 59,893 | $5,419,501 | None |
| Redwood Investment Management, LLC | 2025-03-31 | 2026-08-28 | 11,435 | $1,313,000 | None |
| Principia Wealth Advisory, LLC | 2026-06-30 | 2026-08-27 | 28 | $2,534 | None |
| Principia Wealth Advisory, LLC | 2026-03-31 | 2026-08-27 | 20 | $1,737 | None |
| Advisors Asset Management, Inc. | 2024-03-31 | 2026-08-27 | 12,509 | $2,151,298 | None |
| Advisors Asset Management, Inc. | 2025-03-31 | 2026-08-27 | 3,413 | $391,744 | None |
| Advisors Asset Management, Inc. | 2022-09-30 | 2026-08-27 | 26,531 | $1,978,000 | None |
| Advisors Asset Management, Inc. | 2020-12-31 | 2026-08-27 | 58,164 | $4,434,000 | None |
| Advisors Asset Management, Inc. | 2022-03-31 | 2026-08-27 | 61,549 | $4,995,932 | None |
| Advisors Asset Management, Inc. | 2023-06-30 | 2026-08-27 | 14,729 | $1,845,691 | None |
| Advisors Asset Management, Inc. | 2023-09-30 | 2026-08-27 | 16,266 | $1,825,533 | None |
| Advisors Asset Management, Inc. | 2023-03-31 | 2026-08-27 | 21,353 | $2,244,414 | None |
| Advisors Asset Management, Inc. | 2021-03-31 | 2026-08-27 | 60,102 | $6,084,125 | None |
| Advisors Asset Management, Inc. | 2021-06-30 | 2026-08-27 | 72,816 | $7,234,000 | None |
| Advisors Asset Management, Inc. | 2020-09-30 | 2026-08-27 | 52,633 | $4,299,063 | None |
| Advisors Asset Management, Inc. | 2025-09-30 | 2026-08-27 | 1,028 | $129,569 | None |
| Advisors Asset Management, Inc. | 2023-12-31 | 2026-08-27 | 13,956 | $2,080,002 | None |
| Advus Financial Partners, LLC | 2024-12-31 | 2026-08-26 | 1,506 | $205,373 | None |
| Advus Financial Partners, LLC | 2024-09-30 | 2026-08-26 | 1,507 | $282,532 | None |
| Advus Financial Partners, LLC | 2024-06-30 | 2026-08-26 | 1,507 | $225,854 | None |
| Advus Financial Partners, LLC | 2024-03-31 | 2026-08-26 | 1,492 | $256,594 | None |
| Advus Financial Partners, LLC | 2023-12-31 | 2026-08-26 | 1,448 | $215,810 | None |
| Advisors Asset Management, Inc. | 2019-12-31 | 2026-08-26 | 21 | $1,172 | None |
| Advisors Asset Management, Inc. | 2019-12-31 | 2026-08-26 | 47,977 | $2,676,637 | None |
| Advisors Asset Management, Inc. | 2025-06-30 | 2026-08-25 | 1,095 | $121,118 | None |
| CYBER HORNET ETFs LLC | 2026-06-30 | 2026-08-25 | 586 | $53,027 | None |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 2026-06-30 | 2026-08-25 | 307,067 | $27,786,493 | None |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 2026-06-30 | 2026-08-25 | 27,786,493 | $307,067,000 | None |
| Advisors Asset Management, Inc. | 2024-09-30 | 2026-08-22 | 6,109 | $1,145,315 | None |
| Advisors Asset Management, Inc. | 2024-06-30 | 2026-08-22 | 9,336 | $1,399,186 | None |
| Advisors Asset Management, Inc. | 2024-12-31 | 2026-08-22 | 3,836 | $523,115 | None |
| Advisors Asset Management, Inc. | 2025-12-31 | 2026-08-22 | 931 | $95,707 | None |
| Advisors Asset Management, Inc. | 2020-03-31 | 2026-08-22 | 23,551 | $899,648 | None |
| Archer Investment Corp | 2026-06-30 | 2026-08-20 | 198 | $17,917 | None |
| MERCER GLOBAL ADVISORS INC /ADV | 2026-06-30 | 2026-08-20 | 106,374 | $9,625,761 | None |
| Beacon Pointe Advisors, LLC | 2026-06-30 | 2026-08-19 | 10,828 | $979,858 | None |
| Advisors Asset Management, Inc. | 2019-03-31 | 2026-08-19 | 21 | $1,031 | None |
| Advisors Asset Management, Inc. | 2019-03-31 | 2026-08-19 | 45,787 | $2,247,684 | None |
| Advisors Asset Management, Inc. | 2019-09-30 | 2026-08-19 | 21 | $1,173 | None |
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90-day public filing window, up to 50 source positions.
Recent Congressional disclosures
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How to read the disclosure dates
The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.
Company insiders
SEC Form 4 purchases, sales and awards report transactions and their public filing availability.
Institutional managers
13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.
Congressional filers
Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.
Read the transaction codes
Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.