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Public ownership evidence

Builders FirstSource, Inc. (BLDR) Ownership Disclosures

Read BLDR insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-10-202026-10-18Hiller MichaelA12,808Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-18 and its public availability date is 2026-10-20. Subtracting those calendar dates gives 2 days 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.

SEC 0001193125-26-426667 ↗SEC 0001193125-26-390554 ↗SEC 0001193125-26-390551 ↗

Recent Form 4 activity

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2026-10-202026-10-18Hiller MichaelA12,808Not reported
2026-09-142026-09-10Steinke Craig ArthurA564Not reported
2026-09-142026-09-10OLEARY JAMESA564Not reported
2026-09-142026-09-10Charles Dirkson RA470Not reported
2026-09-142026-09-10Renz MariaA489Not reported
2026-09-142026-09-10LEVY PAUL SA1,204Not reported
2026-09-142026-09-10Hayes William BA583Not reported
2026-09-142026-09-10CHRISTOPHE CLEVELAND AA564Not reported
2026-09-142026-09-10Boydston Cory JacobsA470Not reported

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 LLC2026-06-302026-08-297$626None
Cornerstone Financial Management LLC2026-03-312026-08-295$412None
Advisors Asset Management, Inc.2021-12-312026-08-28703$60,254None
Advisors Asset Management, Inc.2022-12-312026-08-28706$45,805None
Advisors Asset Management, Inc.2022-06-302026-08-28623$33,000None
Advisors Asset Management, Inc.2021-09-302026-08-28735$38,000None
Corient Private Wealth LP2026-06-302026-08-282,599$232,559None
Corient Private Wealth LP2026-06-302026-08-2832,242$2,885,016None
Redwood Investment Management, LLC2024-12-312026-08-2810,023$1,433,000None
Redwood Investment Management, LLC2025-03-312026-08-2810,524$1,315,000None
Principia Wealth Advisory, LLC2026-06-302026-08-2720$1,790None
Principia Wealth Advisory, LLC2026-03-312026-08-274$329None
Advisors Asset Management, Inc.2024-03-312026-08-272,046$426,693None
Advisors Asset Management, Inc.2025-03-312026-08-271,053$131,562None
Advisors Asset Management, Inc.2022-09-302026-08-27300$18,000None
Advisors Asset Management, Inc.2022-03-312026-08-27643$41,499None
Advisors Asset Management, Inc.2023-06-302026-08-271,451$197,336None
Advisors Asset Management, Inc.2023-09-302026-08-271,736$216,115None
Advisors Asset Management, Inc.2023-03-312026-08-271,084$96,238None
Advisors Asset Management, Inc.2021-06-302026-08-27622$27,000None
Advisors Asset Management, Inc.2023-12-312026-08-271,550$258,757None
Giverny Capital Inc.2026-06-302026-08-2791,464$8,184,199None
Advus Financial Partners, LLC2025-09-302026-08-261,956$237,165None
Advus Financial Partners, LLC2025-06-302026-08-261,979$230,930None
Advus Financial Partners, LLC2025-03-312026-08-262,035$254,253None
Advus Financial Partners, LLC2024-12-312026-08-262,050$293,007None
Advus Financial Partners, LLC2024-09-302026-08-262,065$400,321None
Advus Financial Partners, LLC2024-06-302026-08-262,107$291,630None
Advus Financial Partners, LLC2024-03-312026-08-262,132$444,629None
Advus Financial Partners, LLC2023-12-312026-08-262,223$371,108None
Advus Financial Partners, LLC2023-09-302026-08-262,167$269,770None
Advus Financial Partners, LLC2023-06-302026-08-262,325$316,200None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-267,200$644,256None
Advisors Asset Management, Inc.2025-06-302026-08-25147$17,153None
CYBER HORNET ETFs LLC2026-06-302026-08-25296$26,486None
First Eagle Investment Management, LLC2026-06-302026-08-25117$10,469None
First Eagle Investment Management, LLC2026-06-302026-08-2550$4,474None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25124,920$11,177,842None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2511,177,842$124,920,000None
Advisors Asset Management, Inc.2024-09-302026-08-222,223$430,951None
Advisors Asset Management, Inc.2024-06-302026-08-222,427$335,921None
Advisors Asset Management, Inc.2024-12-312026-08-221,961$280,286None
Assenagon Asset Management S.A.2026-06-302026-08-2296,157$8,604,128None
Rehmann Capital Advisory Group2026-06-302026-08-2111,884$1,063,380None
GILL CAPITAL PARTNERS, LLC2026-06-302026-08-2120$1,790None
Bullock Wealth Management Group2026-06-302026-08-20158$13,394None
Kingsview Wealth Management, LLC2026-06-302026-08-203,826$342,350None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2028,910$2,586,887None
Ensign Peak Advisors, Inc2026-03-312026-08-1915,762$1,297,685None
Ensign Peak Advisors, Inc2025-12-312026-08-1946,305$4,764,321None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗Corient Private Wealth LP ↗Redwood Investment Management, LLC ↗Redwood Investment Management, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

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.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

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.